Built 2026-10-19 (19 October 2026)

Galway Weather Records (EIE00101859)

Record envelope, standing records and threshold days for Galway (EIE00101859), Ireland, with 142 years of record.

Key Facts for Galway

  • Galway (EIE00101859) is a weather station in Ireland at 53.28 latitude and -9.02 longitude, 8 m (26 ft) above sea level.
  • The station reports from 1861 to 2002, 142 years of record.
  • 1,464 records set at Galway still stand.
  • Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
  • Galway set a daily record precipitation of 24.8 mm (1.0 in) on 28 December 2002.

About the Station

  • Location: Ireland, 53.28 latitude, -9.02 longitude.
  • Elevation: 8 m (26 ft).
  • Period of record: 1861 to 2002, 142 years.
  • Eligible elements: tmax, tmin, prcp.

Daily Record Envelope and 2026

0 days at or beyond a record
Daily record high and record low at Galway, with 2026 drawn through them The band shows the record high and record low for each calendar day at Galway. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -20-10010203040 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Galway. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Galway, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan14.4 C (57.9 F)-11.7 C (10.9 F)n/an/a
Feb15.7 C (60.3 F)-10.5 C (13.1 F)n/an/a
Mar21.1 C (70.0 F)-6.7 C (19.9 F)n/an/a
Apr23.3 C (73.9 F)-6.7 C (19.9 F)n/an/a
May26.7 C (80.1 F)-1.5 C (29.3 F)n/an/a
Jun30.6 C (87.1 F)-2.2 C (28.0 F)n/an/a
Jul31.7 C (89.1 F)-1.1 C (30.0 F)n/an/a
Aug30.6 C (87.1 F)1.7 C (35.1 F)n/an/a
Sep28.3 C (82.9 F)0.6 C (33.1 F)n/an/a
Oct25.6 C (78.1 F)-8.9 C (16.0 F)n/an/a
Nov18.3 C (64.9 F)-15.8 C (3.6 F)n/an/a
Dec16.7 C (62.1 F)-8.9 C (16.0 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Galway by the year they were set 1,464 records at Galway still stand. 1881 holds the most, with 37. 0102030401861: 91863: 61864: 81865: 161866: 91867: 241868: 101869: 71870: 261871: 31880: 121881: 371882: 21883: 91884: 71885: 41886: 111887: 171888: 161889: 101890: 131891: 131892: 231893: 281894: 131895: 161896: 141897: 91898: 201899: 211900: 141901: 151902: 181903: 61904: 61905: 71906: 131907: 111908: 201909: 141910: 11911: 111912: 271913: 111914: 81915: 71916: 101917: 151918: 211919: 131920: 81921: 101922: 91923: 181924: 81925: 141926: 111927: 141928: 281929: 251930: 191931: 221932: 61933: 91934: 121935: 181936: 71937: 191938: 141939: 71940: 61941: 51942: 171943: 101944: 111945: 161946: 81947: 261948: 231949: 51950: 91952: 51963: 31965: 21966: 111967: 21968: 81969: 171970: 71971: 121972: 141973: 111974: 81975: 71976: 171977: 91978: 161979: 131980: 41981: 81982: 121983: 141984: 71985: 131986: 71987: 161988: 51989: 161990: 161991: 41992: 91993: 101994: 81995: 201996: 51997: 131998: 161999: 12000: 112001: 32002: 91861188318961909192219351948197319861999
1,464 records at Galway still stand. 1881 holds the most, with 37.
Standing records at Galway by the year they were set
Year setStanding records
18619
18636
18648
186516
18669
186724
186810
18697
187026
18713
188012
188137
18822
18839
18847
18854
188611
188717
188816
188910
189013
189113
189223
189328
189413
189516
189614
18979
189820
189921
190014
190115
190218
19036
19046
19057
190613
190711
190820
190914
19101
191111
191227
191311
19148
19157
191610
191715
191821
191913
19208
192110
19229
192318
19248
192514
192611
192714
192828
192925
193019
193122
19326
19339
193412
193518
19367
193719
193814
19397
19406
19415
194217
194310
194411
194516
19468
194726
194823
19495
19509
19525
19633
19652
196611
19672
19688
196917
19707
197112
197214
197311
19748
19757
197617
19779
197816
197913
19804
19818
198212
198314
19847
198513
19867
198716
19885
198916
199016
19914
19929
199310
19948
199520
19965
199713
199816
19991
200011
20013
20029

All-Time Record Progression

5 new records
When Galway set new all-time records 5 all-time records were set at Galway between 14 February 1904 and 22 August 1949. Each dot is a new record. Record daily precipitationRecord high maximum temperatureRecord low maximum temperatureRecord high minimum temperature14 February 1904: Record daily precipitation 54.5 mm (2.1 in)12 July 1921: Record high maximum temperature 31.7 C (89.1 F)17 February 1923: Record daily precipitation 68.8 mm (2.7 in)28 January 1945: Record low maximum temperature -4.4 C (24.1 F)22 August 1949: Record high minimum temperature 20.6 C (69.1 F)19101920193019401950
5 all-time records were set at Galway between 14 February 1904 and 22 August 1949. Each dot is a new record.
When Galway set new all-time records
DateKindDetail
1904-02-14Record daily precipitationRecord daily precipitation 54.5 mm (2.1 in)
1921-07-12Record high maximum temperatureRecord high maximum temperature 31.7 C (89.1 F)
1923-02-17Record daily precipitationRecord daily precipitation 68.8 mm (2.7 in)
1945-01-28Record low maximum temperatureRecord low maximum temperature -4.4 C (24.1 F)
1949-08-22Record high minimum temperatureRecord high minimum temperature 20.6 C (69.1 F)

Wettest Day of Each Month

Feb: 68.8 mm (2.7 in)
Record daily precipitation for each month at Galway The wettest day on record for each calendar month at Galway. The most was 68.8 mm (2.7 in) on 17 February 1923. 020406080 Jan: 38.5 mm (1.5 in), 19 January 2002 Jan Feb: 68.8 mm (2.7 in), 17 February 1923 Feb Mar: 33.4 mm (1.3 in), 1 March 1880 Mar Apr: 32.9 mm (1.3 in), 23 April 1868 Apr May: 32.6 mm (1.3 in), 11 May 1863 May Jun: 38.7 mm (1.5 in), 22 June 1901 Jun Jul: 48.9 mm (1.9 in), 29 July 1938 Jul Aug: 62.4 mm (2.5 in), 31 August 1924 Aug Sep: 49.2 mm (1.9 in), 1 September 1887 Sep Oct: 40.9 mm (1.6 in), 28 October 2002 Oct Nov: 48.2 mm (1.9 in), 10 November 1939 Nov Dec: 40.8 mm (1.6 in), 14 December 1861 Dec
The wettest day on record for each calendar month at Galway. The most was 68.8 mm (2.7 in) on 17 February 1923.
Record daily precipitation for each month at Galway
MonthRecord daily precipitation (mm)Date
Jan38.5 mm (1.5 in)19 January 2002
Feb68.8 mm (2.7 in)17 February 1923
Mar33.4 mm (1.3 in)1 March 1880
Apr32.9 mm (1.3 in)23 April 1868
May32.6 mm (1.3 in)11 May 1863
Jun38.7 mm (1.5 in)22 June 1901
Jul48.9 mm (1.9 in)29 July 1938
Aug62.4 mm (2.5 in)31 August 1924
Sep49.2 mm (1.9 in)1 September 1887
Oct40.9 mm (1.6 in)28 October 2002
Nov48.2 mm (1.9 in)10 November 1939
Dec40.8 mm (1.6 in)14 December 1861

Period of Record Coverage

1861 to 2002
Days with data per year at Galway 123 years of record at Galway, 1861 to 2002. 21 years have data for under 90 percent of days and are left out of rankings: 1863, 1871, 1882, 1894, 1895, 1909, 1912, 1915 and others. 1861: 355 of 365 days1863: 312 of 365 days1864: 363 of 366 days1865: 358 of 365 days1866: 365 of 365 days1867: 364 of 365 days1868: 364 of 366 days1869: 365 of 365 days1870: 361 of 365 days1871: 122 of 365 days1880: 364 of 366 days1881: 352 of 365 days1882: 46 of 365 days1883: 345 of 365 days1884: 365 of 366 days1885: 364 of 365 days1886: 365 of 365 days1887: 359 of 365 days1888: 358 of 366 days1889: 362 of 365 days1890: 352 of 365 days1891: 363 of 365 days1892: 355 of 366 days1893: 365 of 365 days1894: 283 of 365 days1895: 236 of 365 days1896: 364 of 366 days1897: 365 of 365 days1898: 363 of 365 days1899: 362 of 365 days1900: 359 of 365 days1901: 355 of 365 days1902: 356 of 365 days1903: 336 of 365 days1904: 342 of 366 days1905: 350 of 365 days1906: 358 of 365 days1907: 354 of 365 days1908: 361 of 366 days1909: 327 of 365 days1910: 363 of 365 days1911: 359 of 365 days1912: 327 of 366 days1913: 358 of 365 days1914: 349 of 365 days1915: 327 of 365 days1916: 328 of 366 days1917: 343 of 365 days1918: 329 of 365 days1919: 357 of 365 days1920: 320 of 366 days1921: 322 of 365 days1922: 357 of 365 days1923: 333 of 365 days1924: 296 of 366 days1925: 365 of 365 days1926: 363 of 365 days1927: 351 of 365 days1928: 359 of 366 days1929: 364 of 365 days1930: 365 of 365 days1931: 329 of 365 days1932: 351 of 366 days1933: 360 of 365 days1934: 364 of 365 days1935: 348 of 365 days1936: 362 of 366 days1937: 360 of 365 days1938: 271 of 365 days1939: 332 of 365 days1940: 268 of 366 days1941: 361 of 365 days1942: 362 of 365 days1943: 358 of 365 days1944: 363 of 366 days1945: 362 of 365 days1946: 360 of 365 days1947: 365 of 365 days1948: 365 of 366 days1949: 334 of 365 days1950: 364 of 365 days1951: 363 of 365 days1952: 182 of 366 days1963: 42 of 365 days1964: 20 of 366 days1965: 60 of 365 days1966: 358 of 365 days1967: 334 of 365 days1968: 363 of 366 days1969: 363 of 365 days1970: 363 of 365 days1971: 362 of 365 days1972: 365 of 366 days1973: 361 of 365 days1974: 364 of 365 days1975: 363 of 365 days1976: 363 of 366 days1977: 362 of 365 days1978: 362 of 365 days1979: 361 of 365 days1980: 363 of 366 days1981: 355 of 365 days1982: 362 of 365 days1983: 364 of 365 days1984: 366 of 366 days1985: 362 of 365 days1986: 365 of 365 days1987: 363 of 365 days1988: 363 of 366 days1989: 362 of 365 days1990: 360 of 365 days1991: 364 of 365 days1992: 363 of 366 days1993: 362 of 365 days1994: 363 of 365 days1995: 361 of 365 days1996: 356 of 366 days1997: 322 of 365 days1998: 363 of 365 days1999: 365 of 365 days2000: 305 of 366 days2001: 88 of 365 days2002: 350 of 365 days188019001920194019802000
123 years of record at Galway, 1861 to 2002. 21 years have data for under 90 percent of days and are left out of rankings: 1863, 1871, 1882, 1894, 1895, 1909, 1912, 1915 and others.
Days with data per year at Galway
YearDays with dataShare of yearComplete
186135597%Yes
186331285%No
186436399%Yes
186535898%Yes
1866365100%Yes
1867364100%Yes
186836499%Yes
1869365100%Yes
187036199%Yes
187112233%No
188036499%Yes
188135296%Yes
18824613%No
188334595%Yes
1884365100%Yes
1885364100%Yes
1886365100%Yes
188735998%Yes
188835898%Yes
188936299%Yes
189035296%Yes
189136399%Yes
189235597%Yes
1893365100%Yes
189428378%No
189523665%No
189636499%Yes
1897365100%Yes
189836399%Yes
189936299%Yes
190035998%Yes
190135597%Yes
190235698%Yes
190333692%Yes
190434293%Yes
190535096%Yes
190635898%Yes
190735497%Yes
190836199%Yes
190932790%No
191036399%Yes
191135998%Yes
191232789%No
191335898%Yes
191434996%Yes
191532790%No
191632890%No
191734394%Yes
191832990%Yes
191935798%Yes
192032087%No
192132288%No
192235798%Yes
192333391%Yes
192429681%No
1925365100%Yes
192636399%Yes
192735196%Yes
192835998%Yes
1929364100%Yes
1930365100%Yes
193132990%Yes
193235196%Yes
193336099%Yes
1934364100%Yes
193534895%Yes
193636299%Yes
193736099%Yes
193827174%No
193933291%Yes
194026873%No
194136199%Yes
194236299%Yes
194335898%Yes
194436399%Yes
194536299%Yes
194636099%Yes
1947365100%Yes
1948365100%Yes
194933492%Yes
1950364100%Yes
195136399%Yes
195218250%No
19634212%No
1964205%No
19656016%No
196635898%Yes
196733492%Yes
196836399%Yes
196936399%Yes
197036399%Yes
197136299%Yes
1972365100%Yes
197336199%Yes
1974364100%Yes
197536399%Yes
197636399%Yes
197736299%Yes
197836299%Yes
197936199%Yes
198036399%Yes
198135597%Yes
198236299%Yes
1983364100%Yes
1984366100%Yes
198536299%Yes
1986365100%Yes
198736399%Yes
198836399%Yes
198936299%Yes
199036099%Yes
1991364100%Yes
199236399%Yes
199336299%Yes
199436399%Yes
199536199%Yes
199635697%Yes
199732288%No
199836399%Yes
1999365100%Yes
200030583%No
20018824%No
200235096%Yes

Latest Records

20
Latest records at Galway
DateStationRecordValueBeat old record byOld record stoodSignificance
28 December 2002Galway, IEdaily rain24.8 mm (1.0 in)2.6 mm (0.10 in)72 years20 of 100 (Routine)
24 December 2002Galway, IEdaily high min (Tie)9.5 C (49.1 F)tie15 years3 of 100 (Routine)
1 December 2002Galway, IEdaily rain27.3 mm (1.1 in)3.9 mm (0.15 in)64 years36 of 100 (Notable)
9 November 2002Galway, IEdaily high min11.0 C (51.8 F)0.4 C (0.7 F)109 years41 of 100 (Notable)
7 November 2002Galway, IEdaily rain24.1 mm (0.9 in)6.0 mm (0.24 in)64 years20 of 100 (Routine)
28 October 2002Galway, IEmonthly rain40.9 mm (1.6 in)5.5 mm (0.22 in)7 years31 of 100 (Routine)
20 October 2002Galway, IEdaily rain30.0 mm (1.2 in)4.2 mm (0.17 in)4 years18 of 100 (Routine)
7 October 2002Galway, IEdaily rain15.7 mm (0.6 in)0.2 mm (0.01 in)69 years20 of 100 (Routine)
13 June 2002Galway, IEdaily rain14.3 mm (0.6 in)5.0 mm (0.20 in)4 years20 of 100 (Routine)
25 May 2002Galway, IEdaily rain18.1 mm (0.7 in)1.4 mm (0.06 in)5 years13 of 100 (Routine)
24 April 2002Galway, IEdaily high min10.2 C (50.4 F)0.2 C (0.4 F)27 years18 of 100 (Routine)
23 April 2002Galway, IEdaily high min10.3 C (50.5 F)0.3 C (0.5 F)108 years41 of 100 (Notable)
21 April 2002Galway, IEdaily high min12.0 C (53.6 F)0.9 C (1.6 F)116 years43 of 100 (Notable)
20 April 2002Galway, IEdaily high min10.7 C (51.3 F)0.1 C (0.2 F)108 years40 of 100 (Notable)
24 March 2002Galway, IEdaily high min10.5 C (50.9 F)0.5 C (0.9 F)115 years41 of 100 (Notable)
9 March 2002Galway, IEdaily rain18.3 mm (0.7 in)2.0 mm (0.08 in)68 years20 of 100 (Routine)
8 March 2002Galway, IEdaily rain24.5 mm (1.0 in)10.5 mm (0.4 in)107 years20 of 100 (Routine)
25 February 2002Galway, IEdaily high min9.5 C (49.1 F)1.2 C (2.2 F)104 years43 of 100 (Notable)
24 February 2002Galway, IEdaily rain16.9 mm (0.7 in)0.1 mm (0.00 in)55 years20 of 100 (Routine)
19 February 2002Galway, IEdaily rain22.5 mm (0.9 in)5.7 mm (0.22 in)52 years20 of 100 (Routine)

Climate Trend

92 complete years, 1861 to 1999
Annual mean temperature at Galway as warming stripes, 1861 to 1999 One stripe for each of 92 complete years at Galway, 1861 to 1999. Blue stripes are years cooler than the station's own mean of 9.9 C (49.8 F); red stripes are warmer. The coolest year was 1930, at 8.3 C (46.9 F), and the warmest was 1995, at 11.1 C (52.0 F). The strongest colour marks a difference of 1.7 C (3.1 F). 1861: 10.2 C, +0.3 C from the station mean1864: 9.6 C, -0.3 C from the station mean1865: 10.3 C, +0.4 C from the station mean1866: 9.8 C, -0.1 C from the station mean1867: 9.9 C, 0.0 C from the station mean1868: 9.7 C, -0.2 C from the station mean1869: 9.7 C, -0.2 C from the station mean1870: 9.7 C, -0.2 C from the station mean1880: 10.2 C, +0.3 C from the station mean1881: 9.3 C, -0.6 C from the station mean1884: 10.3 C, +0.4 C from the station mean1885: 9.7 C, -0.2 C from the station mean1886: 9.7 C, -0.2 C from the station mean1887: 10.2 C, +0.2 C from the station mean1888: 10.0 C, +0.1 C from the station mean1889: 10.5 C, +0.5 C from the station mean1890: 10.2 C, +0.3 C from the station mean1891: 10.0 C, +0.1 C from the station mean1892: 9.4 C, -0.5 C from the station mean1893: 11.0 C, +1.1 C from the station mean1896: 10.3 C, +0.4 C from the station mean1897: 10.1 C, +0.1 C from the station mean1898: 10.6 C, +0.7 C from the station mean1899: 10.5 C, +0.6 C from the station mean1900: 10.1 C, +0.2 C from the station mean1901: 10.1 C, +0.2 C from the station mean1902: 9.8 C, -0.1 C from the station mean1905: 10.3 C, +0.4 C from the station mean1906: 10.2 C, +0.3 C from the station mean1907: 9.9 C, 0.0 C from the station mean1908: 10.4 C, +0.5 C from the station mean1910: 9.8 C, -0.1 C from the station mean1911: 10.1 C, +0.2 C from the station mean1913: 9.0 C, -1.0 C from the station mean1914: 10.0 C, 0.0 C from the station mean1917: 9.0 C, -0.9 C from the station mean1919: 9.0 C, -0.9 C from the station mean1922: 8.9 C, -1.0 C from the station mean1925: 8.8 C, -1.1 C from the station mean1926: 9.6 C, -0.3 C from the station mean1927: 9.2 C, -0.7 C from the station mean1928: 8.9 C, -1.0 C from the station mean1929: 8.5 C, -1.4 C from the station mean1930: 8.3 C, -1.7 C from the station mean1932: 9.6 C, -0.3 C from the station mean1933: 10.2 C, +0.3 C from the station mean1934: 10.0 C, +0.1 C from the station mean1935: 9.4 C, -0.5 C from the station mean1936: 9.6 C, -0.3 C from the station mean1937: 9.3 C, -0.6 C from the station mean1941: 9.4 C, -0.5 C from the station mean1942: 9.5 C, -0.4 C from the station mean1943: 10.0 C, +0.1 C from the station mean1944: 9.5 C, -0.4 C from the station mean1945: 10.6 C, +0.7 C from the station mean1946: 9.5 C, -0.4 C from the station mean1947: 9.5 C, -0.4 C from the station mean1948: 10.1 C, +0.2 C from the station mean1950: 9.6 C, -0.3 C from the station mean1951: 9.2 C, -0.7 C from the station mean1966: 9.8 C, -0.1 C from the station mean1968: 9.9 C, 0.0 C from the station mean1969: 9.7 C, -0.3 C from the station mean1970: 9.9 C, 0.0 C from the station mean1971: 10.5 C, +0.6 C from the station mean1972: 9.6 C, -0.3 C from the station mean1973: 10.2 C, +0.3 C from the station mean1974: 9.8 C, -0.1 C from the station mean1975: 10.5 C, +0.6 C from the station mean1976: 10.3 C, +0.4 C from the station mean1977: 10.1 C, +0.2 C from the station mean1978: 10.1 C, +0.2 C from the station mean1979: 9.2 C, -0.7 C from the station mean1980: 9.9 C, 0.0 C from the station mean1981: 10.0 C, +0.1 C from the station mean1982: 10.4 C, +0.4 C from the station mean1983: 10.6 C, +0.7 C from the station mean1984: 10.3 C, +0.4 C from the station mean1985: 9.6 C, -0.3 C from the station mean1986: 9.3 C, -0.6 C from the station mean1987: 10.0 C, +0.1 C from the station mean1988: 10.4 C, +0.5 C from the station mean1989: 10.7 C, +0.8 C from the station mean1990: 10.9 C, +1.0 C from the station mean1991: 10.4 C, +0.5 C from the station mean1992: 10.3 C, +0.4 C from the station mean1993: 10.2 C, +0.3 C from the station mean1994: 10.4 C, +0.5 C from the station mean1995: 11.1 C, +1.2 C from the station mean1996: 9.9 C, 0.0 C from the station mean1998: 10.8 C, +0.9 C from the station mean1999: 10.9 C, +1.0 C from the station mean18611870188018901900191019201930194019501960197019801990
One stripe for each of 92 complete years at Galway, 1861 to 1999. Blue stripes are years cooler than the station's own mean of 9.9 C (49.8 F); red stripes are warmer. The coolest year was 1930, at 8.3 C (46.9 F), and the warmest was 1995, at 11.1 C (52.0 F). The strongest colour marks a difference of 1.7 C (3.1 F).
Annual mean temperature at Galway as warming stripes, 1861 to 1999
YearAnnual mean temperatureDifference from the station mean
186110.2 C+0.32 C
18649.6 C-0.28 C
186510.3 C+0.41 C
18669.8 C-0.09 C
18679.9 C-0.01 C
18689.7 C-0.21 C
18699.7 C-0.17 C
18709.7 C-0.20 C
188010.2 C+0.29 C
18819.3 C-0.58 C
188410.3 C+0.40 C
18859.7 C-0.22 C
18869.7 C-0.19 C
188710.2 C+0.24 C
188810.0 C+0.11 C
188910.5 C+0.54 C
189010.2 C+0.31 C
189110.0 C+0.07 C
18929.4 C-0.47 C
189311.0 C+1.13 C
189610.3 C+0.43 C
189710.1 C+0.14 C
189810.6 C+0.70 C
189910.5 C+0.60 C
190010.1 C+0.17 C
190110.1 C+0.17 C
19029.8 C-0.07 C
190510.3 C+0.35 C
190610.2 C+0.28 C
19079.9 C+0.00 C
190810.4 C+0.53 C
19109.8 C-0.11 C
191110.1 C+0.17 C
19139.0 C-0.96 C
191410.0 C+0.04 C
19179.0 C-0.95 C
19199.0 C-0.95 C
19228.9 C-0.99 C
19258.8 C-1.10 C
19269.6 C-0.28 C
19279.2 C-0.72 C
19288.9 C-1.05 C
19298.5 C-1.39 C
19308.3 C-1.66 C
19329.6 C-0.35 C
193310.2 C+0.28 C
193410.0 C+0.05 C
19359.4 C-0.53 C
19369.6 C-0.34 C
19379.3 C-0.63 C
19419.4 C-0.48 C
19429.5 C-0.42 C
194310.0 C+0.07 C
19449.5 C-0.42 C
194510.6 C+0.65 C
19469.5 C-0.37 C
19479.5 C-0.40 C
194810.1 C+0.19 C
19509.6 C-0.34 C
19519.2 C-0.67 C
19669.8 C-0.08 C
19689.9 C-0.02 C
19699.7 C-0.26 C
19709.9 C-0.03 C
197110.5 C+0.57 C
19729.6 C-0.29 C
197310.2 C+0.31 C
19749.8 C-0.11 C
197510.5 C+0.57 C
197610.3 C+0.43 C
197710.1 C+0.17 C
197810.1 C+0.22 C
19799.2 C-0.68 C
19809.9 C+0.01 C
198110.0 C+0.11 C
198210.4 C+0.44 C
198310.6 C+0.71 C
198410.3 C+0.41 C
19859.6 C-0.35 C
19869.3 C-0.61 C
198710.0 C+0.11 C
198810.4 C+0.53 C
198910.7 C+0.82 C
199010.9 C+0.96 C
199110.4 C+0.46 C
199210.3 C+0.35 C
199310.2 C+0.33 C
199410.4 C+0.52 C
199511.1 C+1.21 C
19969.9 C+0.01 C
199810.8 C+0.89 C
199910.9 C+0.99 C

The fitted trend in annual mean temperature here over 1861 to 1999 is 0.03 C (0.00 to 0.05) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: 0.05 F (0.00 to 0.09) per decade. The slope is a straight line fitted to 92 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Galway
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature0.03 C (0.00 to 0.05) per decade0.05 F (0.00 to 0.09) per decade1861 to 199992Not clearly different from zero
Mean daily maximum-0.06 C (-0.09 to -0.03) per decade-0.1 F (-0.2 to -0.1) per decade1861 to 199992Fall
Mean daily minimum0.1 C (0.1 to 0.2) per decade0.2 F (0.1 to 0.3) per decade1861 to 199992Rise

A year is complete when all 12 months have at least 20 days of both daily maximum and daily minimum readings. The annual mean is the mean of the monthly means. The trend describes this one station over this period; it does not say what caused the change.

Extremes by Year

1861 to 2002
Yearly extremes at Galway: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)31.7 C (89.1 F)192126.5 C (79.7 F)123
Coldest night (TNn)-15.8 C (3.6 F)1890-5.0 C (23.0 F)123
Wettest day (Rx1day)68.8 mm (2.7 in)192331.2 mm (1.2 in)94
Wettest five days (Rx5day)106.1 mm (4.2 in)186464.2 mm (2.5 in)94
Longest dry spell (CDD)35 days189417 days94

Hottest day (TXx)

Hottest day (TXx) at Galway by year The hottest day of the year at Galway, 1861 to 2002. The record is 31.7 C (89.1 F) in 1921, marked on the chart; the median year is 26.5 C (79.7 F). 1015202530351880190019201940196019802000Record: 31.7 C (89.1 F) in 1921
The hottest day of the year at Galway, 1861 to 2002. The record is 31.7 C (89.1 F) in 1921, marked on the chart; the median year is 26.5 C (79.7 F).
Hottest day (TXx) at Galway by year
YearHottest day (TXx)
186127.8 C (82.0 F)
186327.8 C (82.0 F)
186428.3 C (82.9 F)
186530.0 C (86.0 F)
186627.8 C (82.0 F)
186725.0 C (77.0 F)
186831.1 C (88.0 F)
186928.9 C (84.0 F)
187030.6 C (87.1 F)
187123.3 C (73.9 F)
188026.7 C (80.1 F)
188125.0 C (77.0 F)
188212.8 C (55.0 F)
188323.3 C (73.9 F)
188426.1 C (79.0 F)
188526.7 C (80.1 F)
188626.1 C (79.0 F)
188730.6 C (87.1 F)
188824.4 C (75.9 F)
188926.7 C (80.1 F)
189024.4 C (75.9 F)
189127.8 C (82.0 F)
189226.7 C (80.1 F)
189328.3 C (82.9 F)
189427.2 C (81.0 F)
189529.4 C (84.9 F)
189626.1 C (79.0 F)
189727.2 C (81.0 F)
189826.7 C (80.1 F)
189930.0 C (86.0 F)
190028.3 C (82.9 F)
190126.7 C (80.1 F)
190229.4 C (84.9 F)
190326.1 C (79.0 F)
190430.0 C (86.0 F)
190529.4 C (84.9 F)
190628.3 C (82.9 F)
190728.9 C (84.0 F)
190830.6 C (87.1 F)
190925.6 C (78.1 F)
191029.4 C (84.9 F)
191130.6 C (87.1 F)
191222.8 C (73.0 F)
191326.1 C (79.0 F)
191426.7 C (80.1 F)
191525.0 C (77.0 F)
191625.6 C (78.1 F)
191723.9 C (75.0 F)
191828.3 C (82.9 F)
191926.7 C (80.1 F)
192023.9 C (75.0 F)
192131.7 C (89.1 F)
192227.8 C (82.0 F)
192324.4 C (75.9 F)
192422.2 C (72.0 F)
192527.8 C (82.0 F)
192627.8 C (82.0 F)
192726.7 C (80.1 F)
192827.2 C (81.0 F)
192928.9 C (84.0 F)
193025.6 C (78.1 F)
193126.7 C (80.1 F)
193226.7 C (80.1 F)
193329.4 C (84.9 F)
193431.1 C (88.0 F)
193524.4 C (75.9 F)
193625.0 C (77.0 F)
193725.6 C (78.1 F)
193825.0 C (77.0 F)
193928.9 C (84.0 F)
194028.9 C (84.0 F)
194124.4 C (75.9 F)
194228.3 C (82.9 F)
194326.7 C (80.1 F)
194425.6 C (78.1 F)
194525.0 C (77.0 F)
194620.6 C (69.1 F)
194728.3 C (82.9 F)
194831.7 C (89.1 F)
194928.9 C (84.0 F)
195029.4 C (84.9 F)
195125.6 C (78.1 F)
195225.6 C (78.1 F)
196317.2 C (63.0 F)
196412.8 C (55.0 F)
196513.0 C (55.4 F)
196623.5 C (74.3 F)
196723.8 C (74.8 F)
196825.8 C (78.4 F)
196927.4 C (81.3 F)
197026.2 C (79.2 F)
197125.5 C (77.9 F)
197226.5 C (79.7 F)
197328.2 C (82.8 F)
197425.0 C (77.0 F)
197526.7 C (80.1 F)
197630.5 C (86.9 F)
197726.0 C (78.8 F)
197824.5 C (76.1 F)
197922.5 C (72.5 F)
198022.7 C (72.9 F)
198124.4 C (75.9 F)
198225.5 C (77.9 F)
198328.5 C (83.3 F)
198426.0 C (78.8 F)
198523.5 C (74.3 F)
198625.3 C (77.5 F)
198723.0 C (73.4 F)
198824.5 C (76.1 F)
198928.7 C (83.7 F)
199027.0 C (80.6 F)
199126.2 C (79.2 F)
199225.5 C (77.9 F)
199322.5 C (72.5 F)
199422.0 C (71.6 F)
199529.5 C (85.1 F)
199626.0 C (78.8 F)
199726.2 C (79.2 F)
199824.8 C (76.6 F)
199927.0 C (80.6 F)
200026.1 C (79.0 F)
200119.3 C (66.7 F)
200224.1 C (75.4 F)

Coldest night (TNn)

Coldest night (TNn) at Galway by year The coldest night of the year at Galway, 1861 to 2002. The record is -15.8 C (3.6 F) in 1890, marked on the chart; the median year is -5.0 C (23.0 F). -20-15-10-501880190019201940196019802000Record: -15.8 C (3.6 F) in 1890
The coldest night of the year at Galway, 1861 to 2002. The record is -15.8 C (3.6 F) in 1890, marked on the chart; the median year is -5.0 C (23.0 F).
Coldest night (TNn) at Galway by year
YearColdest night (TNn)
1861-3.3 C (26.1 F)
18630.0 C (32.0 F)
1864-3.9 C (25.0 F)
1865-5.0 C (23.0 F)
1866-3.9 C (25.0 F)
1867-9.4 C (15.1 F)
1868-6.1 C (21.0 F)
1869-4.4 C (24.1 F)
1870-6.1 C (21.0 F)
1871-1.7 C (28.9 F)
1880-6.1 C (21.0 F)
1881-10.6 C (12.9 F)
1882-1.7 C (28.9 F)
1883-5.0 C (23.0 F)
1884-3.3 C (26.1 F)
1885-3.9 C (25.0 F)
1886-6.7 C (19.9 F)
1887-4.4 C (24.1 F)
1888-5.6 C (21.9 F)
1889-3.3 C (26.1 F)
1890-15.8 C (3.6 F)
1891-6.7 C (19.9 F)
1892-7.2 C (19.0 F)
1893-7.8 C (18.0 F)
1894-9.4 C (15.1 F)
1895-2.8 C (27.0 F)
1896-6.7 C (19.9 F)
1897-5.6 C (21.9 F)
1898-3.9 C (25.0 F)
1899-5.0 C (23.0 F)
1900-5.6 C (21.9 F)
1901-5.6 C (21.9 F)
1902-6.7 C (19.9 F)
1903-7.2 C (19.0 F)
1904-3.9 C (25.0 F)
1905-5.0 C (23.0 F)
1906-8.9 C (16.0 F)
1907-5.6 C (21.9 F)
1908-6.7 C (19.9 F)
1909-8.9 C (16.0 F)
1910-5.6 C (21.9 F)
1911-6.7 C (19.9 F)
1912-8.3 C (17.1 F)
1913-6.7 C (19.9 F)
1914-5.0 C (23.0 F)
1915-3.9 C (25.0 F)
1916-4.4 C (24.1 F)
1917-6.7 C (19.9 F)
1918-6.7 C (19.9 F)
1919-6.7 C (19.9 F)
1920-6.7 C (19.9 F)
1921-6.7 C (19.9 F)
1922-4.4 C (24.1 F)
1923-4.4 C (24.1 F)
1924-5.0 C (23.0 F)
1925-6.7 C (19.9 F)
1926-5.0 C (23.0 F)
1927-5.6 C (21.9 F)
1928-5.6 C (21.9 F)
1929-8.9 C (16.0 F)
1930-7.8 C (18.0 F)
1931-8.9 C (16.0 F)
1932-3.9 C (25.0 F)
1933-3.3 C (26.1 F)
1934-2.2 C (28.0 F)
1935-5.6 C (21.9 F)
1936-3.9 C (25.0 F)
1937-3.3 C (26.1 F)
1938-5.6 C (21.9 F)
1939-3.9 C (25.0 F)
1940-2.2 C (28.0 F)
1941-4.4 C (24.1 F)
1942-4.4 C (24.1 F)
1943-0.6 C (30.9 F)
1944-3.3 C (26.1 F)
1945-11.7 C (10.9 F)
1946-4.4 C (24.1 F)
1947-6.7 C (19.9 F)
1948-2.8 C (27.0 F)
1949-1.7 C (28.9 F)
1950-3.3 C (26.1 F)
1951-2.2 C (28.0 F)
1952-2.2 C (28.0 F)
1963-6.0 C (21.2 F)
1964-2.0 C (28.4 F)
1965-4.0 C (24.8 F)
1966-5.0 C (23.0 F)
1967-5.3 C (22.5 F)
1968-5.1 C (22.8 F)
1969-10.5 C (13.1 F)
1970-5.2 C (22.6 F)
1971-3.5 C (25.7 F)
1972-3.5 C (25.7 F)
1973-3.0 C (26.6 F)
1974-1.6 C (29.1 F)
1975-2.0 C (28.4 F)
1976-2.4 C (27.7 F)
1977-4.2 C (24.4 F)
1978-4.2 C (24.4 F)
1979-8.0 C (17.6 F)
1980-3.1 C (26.4 F)
1981-6.4 C (20.5 F)
1982-9.0 C (15.8 F)
1983-2.0 C (28.4 F)
1984-4.0 C (24.8 F)
1985-6.0 C (21.2 F)
1986-6.0 C (21.2 F)
1987-8.0 C (17.6 F)
1988-3.0 C (26.6 F)
1989-3.5 C (25.7 F)
1990-1.8 C (28.8 F)
1991-3.8 C (25.2 F)
1992-4.8 C (23.4 F)
1993-1.8 C (28.8 F)
1994-3.8 C (25.2 F)
1995-5.8 C (21.6 F)
1996-4.5 C (23.9 F)
1997-3.0 C (26.6 F)
1998-2.5 C (27.5 F)
1999-3.5 C (25.7 F)
2000-2.0 C (28.4 F)
2001-6.2 C (20.8 F)
2002-4.2 C (24.4 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Galway by year The wettest day of the year at Galway, 1861 to 2002. The record is 68.8 mm (2.7 in) in 1923, marked on the chart; the median year is 31.2 mm (1.2 in). 0204060801880190019201940196019802000Record: 68.8 mm (2.7 in) in 1923
The wettest day of the year at Galway, 1861 to 2002. The record is 68.8 mm (2.7 in) in 1923, marked on the chart; the median year is 31.2 mm (1.2 in).
Wettest day (Rx1day) at Galway by year
YearWettest day (Rx1day)
186140.8 mm (1.6 in)
186332.6 mm (1.3 in)
186430.6 mm (1.2 in)
186535.7 mm (1.4 in)
186623.7 mm (0.9 in)
186738.0 mm (1.5 in)
186835.2 mm (1.4 in)
186934.4 mm (1.4 in)
187035.7 mm (1.4 in)
187122.2 mm (0.9 in)
188035.7 mm (1.4 in)
188129.6 mm (1.2 in)
188215.5 mm (0.6 in)
188322.4 mm (0.9 in)
188435.2 mm (1.4 in)
188542.0 mm (1.7 in)
188627.3 mm (1.1 in)
188749.2 mm (1.9 in)
188830.6 mm (1.2 in)
188929.6 mm (1.2 in)
189025.0 mm (1.0 in)
189134.4 mm (1.4 in)
189229.3 mm (1.2 in)
189324.4 mm (1.0 in)
189427.5 mm (1.1 in)
189537.7 mm (1.5 in)
189647.4 mm (1.9 in)
189740.3 mm (1.6 in)
189831.9 mm (1.3 in)
189928.0 mm (1.1 in)
190028.0 mm (1.1 in)
190138.7 mm (1.5 in)
190225.0 mm (1.0 in)
190327.0 mm (1.1 in)
190454.5 mm (2.1 in)
190522.2 mm (0.9 in)
190622.9 mm (0.9 in)
190730.6 mm (1.2 in)
190826.0 mm (1.0 in)
190931.3 mm (1.2 in)
191036.9 mm (1.5 in)
191119.1 mm (0.8 in)
191225.2 mm (1.0 in)
191325.5 mm (1.0 in)
191434.7 mm (1.4 in)
191537.7 mm (1.5 in)
191633.1 mm (1.3 in)
191730.8 mm (1.2 in)
191826.0 mm (1.0 in)
191926.2 mm (1.0 in)
192020.4 mm (0.8 in)
192142.0 mm (1.7 in)
192222.9 mm (0.9 in)
192368.8 mm (2.7 in)
192462.4 mm (2.5 in)
192524.0 mm (0.9 in)
192633.1 mm (1.3 in)
192735.7 mm (1.4 in)
192835.7 mm (1.4 in)
192924.7 mm (1.0 in)
193023.2 mm (0.9 in)
193126.0 mm (1.0 in)
193228.0 mm (1.1 in)
193325.0 mm (1.0 in)
193433.1 mm (1.3 in)
193536.9 mm (1.5 in)
193633.6 mm (1.3 in)
193738.5 mm (1.5 in)
193848.9 mm (1.9 in)
193948.2 mm (1.9 in)
194021.1 mm (0.8 in)
194138.2 mm (1.5 in)
194231.9 mm (1.3 in)
194318.6 mm (0.7 in)
194430.8 mm (1.2 in)
194523.7 mm (0.9 in)
194631.1 mm (1.2 in)
194732.0 mm (1.3 in)
194829.3 mm (1.2 in)
194925.0 mm (1.0 in)
195024.5 mm (1.0 in)
195130.6 mm (1.2 in)
195215.5 mm (0.6 in)
1963n/a
1964n/a
196535.3 mm (1.4 in)
19668.9 mm (0.35 in)
1967n/a
1968n/a
1969n/a
1970n/a
1971n/a
1972n/a
1973n/a
1974n/a
1975n/a
1976n/a
1977n/a
1978n/a
1979n/a
1980n/a
1981n/a
1982n/a
1983n/a
1984n/a
1985n/a
1986n/a
1987n/a
1988n/a
1989n/a
1990n/a
1991n/a
1992n/a
1993n/a
199441.7 mm (1.6 in)
199535.4 mm (1.4 in)
199634.7 mm (1.4 in)
199728.3 mm (1.1 in)
199832.0 mm (1.3 in)
199943.2 mm (1.7 in)
200033.0 mm (1.3 in)
200137.6 mm (1.5 in)
200240.9 mm (1.6 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Galway by year The wettest five days of the year at Galway, 1861 to 2002. The record is 106.1 mm (4.2 in) in 1864, marked on the chart; the median year is 64.2 mm (2.5 in). 204060801001201880190019201940196019802000Record: 106.1 mm (4.2 in) in 1864
The wettest five days of the year at Galway, 1861 to 2002. The record is 106.1 mm (4.2 in) in 1864, marked on the chart; the median year is 64.2 mm (2.5 in).
Wettest five days (Rx5day) at Galway by year
YearWettest five days (Rx5day)
186175.1 mm (3.0 in)
1863104.5 mm (4.1 in)
1864106.1 mm (4.2 in)
186593.3 mm (3.7 in)
186670.9 mm (2.8 in)
186768.6 mm (2.7 in)
186851.5 mm (2.0 in)
186969.1 mm (2.7 in)
187089.5 mm (3.5 in)
187163.9 mm (2.5 in)
188091.2 mm (3.6 in)
188175.7 mm (3.0 in)
188244.8 mm (1.8 in)
188362.8 mm (2.5 in)
188470.0 mm (2.8 in)
188576.9 mm (3.0 in)
188661.0 mm (2.4 in)
188788.2 mm (3.5 in)
188867.2 mm (2.6 in)
188952.3 mm (2.1 in)
189051.4 mm (2.0 in)
189179.4 mm (3.1 in)
189270.9 mm (2.8 in)
189360.5 mm (2.4 in)
189462.2 mm (2.4 in)
189562.0 mm (2.4 in)
189668.1 mm (2.7 in)
189785.3 mm (3.4 in)
189861.7 mm (2.4 in)
189954.8 mm (2.2 in)
190082.8 mm (3.3 in)
190161.5 mm (2.4 in)
190255.0 mm (2.2 in)
190376.9 mm (3.0 in)
190471.3 mm (2.8 in)
190549.8 mm (2.0 in)
190670.1 mm (2.8 in)
190754.6 mm (2.1 in)
190838.7 mm (1.5 in)
190967.4 mm (2.7 in)
191072.9 mm (2.9 in)
191153.7 mm (2.1 in)
191255.1 mm (2.2 in)
191352.2 mm (2.1 in)
191476.9 mm (3.0 in)
191556.5 mm (2.2 in)
191667.1 mm (2.6 in)
191752.9 mm (2.1 in)
191852.7 mm (2.1 in)
191944.3 mm (1.7 in)
192060.9 mm (2.4 in)
192187.3 mm (3.4 in)
192255.5 mm (2.2 in)
1923100.3 mm (3.9 in)
192481.1 mm (3.2 in)
192562.2 mm (2.4 in)
192666.5 mm (2.6 in)
192758.1 mm (2.3 in)
192871.3 mm (2.8 in)
192959.9 mm (2.4 in)
193064.5 mm (2.5 in)
193145.6 mm (1.8 in)
193285.6 mm (3.4 in)
193352.1 mm (2.1 in)
193471.9 mm (2.8 in)
193573.8 mm (2.9 in)
193655.0 mm (2.2 in)
193781.6 mm (3.2 in)
193881.2 mm (3.2 in)
193981.6 mm (3.2 in)
194048.4 mm (1.9 in)
194166.8 mm (2.6 in)
194253.5 mm (2.1 in)
194346.1 mm (1.8 in)
194453.0 mm (2.1 in)
194556.2 mm (2.2 in)
194667.5 mm (2.7 in)
194760.7 mm (2.4 in)
194891.0 mm (3.6 in)
194974.8 mm (2.9 in)
195046.7 mm (1.8 in)
195163.2 mm (2.5 in)
195239.2 mm (1.5 in)
1963n/a
1964n/a
196558.9 mm (2.3 in)
196633.2 mm (1.3 in)
1967n/a
1968n/a
1969n/a
1970n/a
1971n/a
1972n/a
1973n/a
1974n/a
1975n/a
1976n/a
1977n/a
1978n/a
1979n/a
1980n/a
1981n/a
1982n/a
1983n/a
1984n/a
1985n/a
1986n/a
1987n/a
1988n/a
1989n/a
1990n/a
1991n/a
1992n/a
1993n/a
199455.6 mm (2.2 in)
199591.4 mm (3.6 in)
199669.6 mm (2.7 in)
199768.2 mm (2.7 in)
199858.0 mm (2.3 in)
199983.8 mm (3.3 in)
200056.5 mm (2.2 in)
200163.1 mm (2.5 in)
200284.4 mm (3.3 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Galway by year The longest dry spell of the year at Galway, 1861 to 2002. The record is 35 days in 1894, marked on the chart; the median year is 17 days. 0102030401880190019201940196019802000Record: 35 days in 1894
The longest dry spell of the year at Galway, 1861 to 2002. The record is 35 days in 1894, marked on the chart; the median year is 17 days.
Longest dry spell (CDD) at Galway by year
YearLongest dry spell (CDD)
186134 days
186315 days
186421 days
186517 days
186616 days
186712 days
186811 days
186916 days
187020 days
187115 days
188022 days
188121 days
188216 days
188318 days
188419 days
188519 days
188623 days
188725 days
188815 days
188915 days
189017 days
189116 days
189221 days
189313 days
189435 days
189518 days
189615 days
189720 days
189815 days
189924 days
190018 days
190118 days
190219 days
190323 days
190413 days
190514 days
190619 days
190713 days
190810 days
190918 days
191027 days
191120 days
191222 days
191319 days
191417 days
191516 days
191614 days
191734 days
191820 days
191918 days
192012 days
192117 days
192214 days
192321 days
192412 days
192522 days
192618 days
192714 days
192818 days
192922 days
193014 days
193113 days
193233 days
193323 days
193417 days
193527 days
193617 days
193713 days
193829 days
193922 days
194029 days
194118 days
194224 days
194311 days
194413 days
194517 days
194627 days
194715 days
194814 days
194916 days
195013 days
195114 days
195217 days
1963n/a
1964n/a
19656 days
196613 days
1967n/a
1968n/a
1969n/a
1970n/a
1971n/a
1972n/a
1973n/a
1974n/a
1975n/a
1976n/a
1977n/a
1978n/a
1979n/a
1980n/a
1981n/a
1982n/a
1983n/a
1984n/a
1985n/a
1986n/a
1987n/a
1988n/a
1989n/a
1990n/a
1991n/a
1992n/a
1993n/a
199410 days
199515 days
199626 days
199721 days
199814 days
199912 days
200013 days
200117 days
200218 days

Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.

Frost Dates and Growing Season

90 years with a frost

Across 90 years with a frost, the median last spring frost at Galway falls on 10 April and the median first autumn frost on 7 November, which leaves a median of 212 days between them.

In 1966 to 1999 the median growing season was 228 days. That is 18 days more than in 1861 to 1907.

Fitted over all years, the growing season changes by +2.3 days per decade at this station.

Frost dates and growing season at Galway
MeasureMedian, all yearsEarliest period (1861 to 1907)Recent period (1966 to 1999)Recent against earliestFitted trend
Last spring frost10 April2 April4 April2 days later-0.3 days per decade
First autumn frost7 November23 October18 November26 days later+2.1 days per decade
Growing days212 days210 days228 days18 days more+2.3 days per decade

A frost day is a day with a daily minimum at or below 0 C (32 F). The last spring frost and the first autumn frost are the last and first such days of the cold season, and growing days are the days between them. A negative trend for the last spring frost means it comes earlier.

Rainfall Return Levels

81 years, 1861 to 2002

A day with at least 30.9 mm (1.2 in) of rain is expected about once in 2 years. A day with at least 57.0 mm (2.2 in) of rain is expected about once in 100 years.

Rainfall return levels at Galway: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years30.9 mm (1.2 in)
5 years37.9 mm (1.5 in)
10 years42.5 mm (1.7 in)
25 years48.3 mm (1.9 in)
50 years52.7 mm (2.1 in)
100 years57.0 mm (2.2 in)Longer than the 81 years of record

The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 81 years of values from 1861 to 2002.

A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.

The largest wettest-day totals in the fit: 68.8 mm (2.7 in) in 1923; 54.5 mm (2.1 in) in 1904; 49.2 mm (1.9 in) in 1887.

Download the Data

  • Data for Galway standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Galway threshold days by year: CSV or JSON. Field meanings are on the data page.

Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-17 (17 October 2026). Records are computed by this site and are not official.

Data as of . Last revised (2025-12-31).