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Cayo Arenas Weather Records (MXN00004006)

Record envelope, standing records and threshold days for Cayo Arenas (MXN00004006), Mexico, with 57 years of record.

Key Facts for Cayo Arenas

  • Cayo Arenas (MXN00004006) is a weather station in Mexico at 22.10 latitude and -91.38 longitude, 3 m (9 ft) above sea level.
  • The station reports from 1929 to 1985, 57 years of record.
  • 1,464 records set at Cayo Arenas still stand.
  • Records are tracked for prcp: an element needs 30 years of data to be eligible.
  • Cayo Arenas set a daily record precipitation of 2.8 mm (0.11 in) on 17 December 1985.

About the Station

  • Location: Mexico, 22.10 latitude, -91.38 longitude.
  • Elevation: 3 m (9 ft).
  • Period of record: 1929 to 1985, 57 years.
  • Eligible elements: prcp.

Daily Record Envelope and 2026

0 days at or beyond a record
Daily record high and record low at Cayo Arenas, with 2026 drawn through them The band shows the record high and record low for each calendar day at Cayo Arenas. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. 10203040 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Cayo Arenas. 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 Cayo Arenas, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan35.0 C (95.0 F)11.7 C (53.1 F)n/an/a
Feb35.6 C (96.1 F)15.6 C (60.1 F)n/an/a
Mar35.6 C (96.1 F)11.7 C (53.1 F)n/an/a
Apr35.6 C (96.1 F)15.0 C (59.0 F)n/an/a
May33.9 C (93.0 F)15.0 C (59.0 F)n/an/a
Jun35.0 C (95.0 F)17.8 C (64.0 F)n/an/a
Jul35.6 C (96.1 F)17.8 C (64.0 F)n/an/a
Aug36.7 C (98.1 F)21.7 C (71.1 F)n/an/a
Sep36.7 C (98.1 F)20.0 C (68.0 F)n/an/a
Oct38.9 C (102.0 F)16.7 C (62.1 F)n/an/a
Nov35.0 C (95.0 F)17.8 C (64.0 F)n/an/a
Dec33.9 C (93.0 F)13.9 C (57.0 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Cayo Arenas by the year they were set 1,464 records at Cayo Arenas still stand. 1930 holds the most, with 149. 0501001501929: 241930: 1491931: 321932: 541933: 371934: 531935: 541936: 321937: 981938: 1201957: 281958: 281959: 291964: 111965: 581966: 971967: 371968: 181969: 521970: 321971: 71972: 31974: 641975: 321976: 431977: 221978: 461979: 721980: 291981: 351982: 321983: 91984: 91985: 18192919331937195919671971197619801984
1,464 records at Cayo Arenas still stand. 1930 holds the most, with 149.
Standing records at Cayo Arenas by the year they were set
Year setStanding records
192924
1930149
193132
193254
193337
193453
193554
193632
193798
1938120
195728
195828
195929
196411
196558
196697
196737
196818
196952
197032
19717
19723
197464
197532
197643
197722
197846
197972
198029
198135
198232
19839
19849
198518

Wettest Day of Each Month

Aug: 199.9 mm (7.9 in)
Record daily precipitation for each month at Cayo Arenas The wettest day on record for each calendar month at Cayo Arenas. The most was 199.9 mm (7.9 in) on 20 August 1951. 050100150200 Jan: 113.8 mm (4.5 in), 31 January 1975 Jan Feb: 21.8 mm (0.9 in), 24 February 1958 Feb Mar: 35.8 mm (1.4 in), 27 March 1955 Mar Apr: 84.8 mm (3.3 in), 17 April 1947 Apr May: 190.0 mm (7.5 in), 8 May 1947 May Jun: 65.8 mm (2.6 in), 23 June 1955 Jun Jul: 42.9 mm (1.7 in), 24 July 1975 Jul Aug: 199.9 mm (7.9 in), 20 August 1951 Aug Sep: 119.9 mm (4.7 in), 23 September 1953 Sep Oct: 199.9 mm (7.9 in), 23 October 1948 Oct Nov: 109.0 mm (4.3 in), 1 November 1958 Nov Dec: 67.8 mm (2.7 in), 23 December 1972 Dec
The wettest day on record for each calendar month at Cayo Arenas. The most was 199.9 mm (7.9 in) on 20 August 1951.
Record daily precipitation for each month at Cayo Arenas
MonthRecord daily precipitation (mm)Date
Jan113.8 mm (4.5 in)31 January 1975
Feb21.8 mm (0.9 in)24 February 1958
Mar35.8 mm (1.4 in)27 March 1955
Apr84.8 mm (3.3 in)17 April 1947
May190.0 mm (7.5 in)8 May 1947
Jun65.8 mm (2.6 in)23 June 1955
Jul42.9 mm (1.7 in)24 July 1975
Aug199.9 mm (7.9 in)20 August 1951
Sep119.9 mm (4.7 in)23 September 1953
Oct199.9 mm (7.9 in)23 October 1948
Nov109.0 mm (4.3 in)1 November 1958
Dec67.8 mm (2.7 in)23 December 1972

Period of Record Coverage

1929 to 1985
Days with data per year at Cayo Arenas 36 years of record at Cayo Arenas, 1929 to 1985. 19 years have data for under 90 percent of days and are left out of rankings: 1929, 1930, 1931, 1932, 1939, 1955, 1957, 1958 and others. 1929: 85 of 365 days1930: 276 of 365 days1931: 92 of 365 days1932: 303 of 366 days1933: 364 of 365 days1934: 363 of 365 days1935: 365 of 365 days1936: 366 of 366 days1937: 363 of 365 days1938: 365 of 365 days1939: 71 of 365 days1955: 30 of 365 days1957: 151 of 365 days1958: 153 of 365 days1959: 89 of 365 days1964: 202 of 366 days1965: 160 of 365 days1966: 32 of 365 days1967: 149 of 365 days1968: 339 of 366 days1969: 334 of 365 days1970: 361 of 365 days1971: 355 of 365 days1972: 147 of 366 days1974: 151 of 365 days1975: 362 of 365 days1976: 356 of 366 days1977: 351 of 365 days1978: 350 of 365 days1979: 352 of 365 days1980: 264 of 366 days1981: 352 of 365 days1982: 322 of 365 days1983: 130 of 365 days1984: 305 of 366 days1985: 333 of 365 days19301935195519651970197519801985
36 years of record at Cayo Arenas, 1929 to 1985. 19 years have data for under 90 percent of days and are left out of rankings: 1929, 1930, 1931, 1932, 1939, 1955, 1957, 1958 and others.
Days with data per year at Cayo Arenas
YearDays with dataShare of yearComplete
19298523%No
193027676%No
19319225%No
193230383%No
1933364100%Yes
193436399%Yes
1935365100%Yes
1936366100%Yes
193736399%Yes
1938365100%Yes
19397119%No
1955308%No
195715141%No
195815342%No
19598924%No
196420255%No
196516044%No
1966329%No
196714941%No
196833993%Yes
196933492%Yes
197036199%Yes
197135597%Yes
197214740%No
197415141%No
197536299%Yes
197635697%Yes
197735196%Yes
197835096%Yes
197935296%Yes
198026472%No
198135296%Yes
198232288%No
198313036%No
198430583%No
198533391%Yes

Latest Records

20
Latest records at Cayo Arenas
DateStationRecordValueBeat old record byOld record stoodSignificance
17 December 1985Cayo Arenas, MXdaily rain2.8 mm (0.11 in)2.8 mm (0.11 in)56 years20 of 100 (Routine)
4 December 1985Cayo Arenas, MXdaily rain4.8 mm (0.19 in)4.0 mm (0.16 in)50 years20 of 100 (Routine)
5 July 1985Cayo Arenas, MXdaily rain1.8 mm (0.07 in)1.3 mm (0.05 in)48 years20 of 100 (Routine)
25 February 1985Cayo Arenas, MXdaily rain1.8 mm (0.07 in)1.8 mm (0.07 in)54 years20 of 100 (Routine)
7 December 1984Cayo Arenas, MXdaily rain (Tie)5.8 mm (0.23 in)tie27 years3 of 100 (Routine)
5 August 1984Cayo Arenas, MXdaily rain0.8 mm (0.03 in)0.8 mm (0.03 in)54 years20 of 100 (Routine)
28 July 1984Cayo Arenas, MXdaily rain2.8 mm (0.11 in)2.8 mm (0.11 in)54 years20 of 100 (Routine)
11 January 1984Cayo Arenas, MXdaily rain1.8 mm (0.07 in)1.8 mm (0.07 in)52 years20 of 100 (Routine)
7 September 1978Cayo Arenas, MXdaily rain18.3 mm (0.7 in)7.4 mm (0.29 in)20 years16 of 100 (Routine)
18 March 1978Cayo Arenas, MXdaily rain21.8 mm (0.9 in)21.8 mm (0.9 in)48 years20 of 100 (Routine)
8 January 1978Cayo Arenas, MXdaily rain10.9 mm (0.4 in)10.9 mm (0.4 in)47 years20 of 100 (Routine)
5 November 1977Cayo Arenas, MXdaily rain15.0 mm (0.6 in)0.5 mm (0.02 in)2 years4 of 100 (Routine)
31 July 1977Cayo Arenas, MXdaily rain17.8 mm (0.7 in)4.8 mm (0.19 in)30 years17 of 100 (Routine)
30 April 1977Cayo Arenas, MXdaily rain19.8 mm (0.8 in)19.8 mm (0.8 in)47 years20 of 100 (Routine)
23 April 1977Cayo Arenas, MXdaily rain19.8 mm (0.8 in)19.8 mm (0.8 in)47 years20 of 100 (Routine)
18 January 1977Cayo Arenas, MXdaily rain17.8 mm (0.7 in)10.7 mm (0.4 in)46 years20 of 100 (Routine)
16 December 1976Cayo Arenas, MXdaily rain20.8 mm (0.8 in)19.0 mm (0.7 in)25 years20 of 100 (Routine)
24 November 1976Cayo Arenas, MXdaily rain41.9 mm (1.6 in)39.1 mm (1.5 in)19 years38 of 100 (Notable)
23 November 1976Cayo Arenas, MXdaily rain11.9 mm (0.5 in)11.9 mm (0.5 in)47 years20 of 100 (Routine)
21 November 1976Cayo Arenas, MXdaily rain36.8 mm (1.4 in)25.9 mm (1.0 in)31 years32 of 100 (Routine)

Climate Trend

12 complete years, 1933 to 1981
Annual mean temperature at Cayo Arenas as warming stripes, 1933 to 1981 One stripe for each of 12 complete years at Cayo Arenas, 1933 to 1981. Blue stripes are years cooler than the station's own mean of 26.8 C (80.3 F); red stripes are warmer. The coolest year was 1938, at 25.2 C (77.4 F), and the warmest was 1979, at 28.5 C (83.3 F). The strongest colour marks a difference of 1.7 C (3.1 F). 1933: 26.9 C, +0.1 C from the station mean1935: 26.9 C, +0.1 C from the station mean1937: 26.3 C, -0.6 C from the station mean1938: 25.2 C, -1.6 C from the station mean1969: 25.8 C, -1.0 C from the station mean1970: 26.3 C, -0.6 C from the station mean1975: 26.6 C, -0.2 C from the station mean1976: 26.8 C, -0.1 C from the station mean1977: 27.0 C, +0.2 C from the station mean1978: 27.5 C, +0.7 C from the station mean1979: 28.5 C, +1.7 C from the station mean1981: 28.1 C, +1.3 C from the station mean1933194019451950195519601965197019751980
One stripe for each of 12 complete years at Cayo Arenas, 1933 to 1981. Blue stripes are years cooler than the station's own mean of 26.8 C (80.3 F); red stripes are warmer. The coolest year was 1938, at 25.2 C (77.4 F), and the warmest was 1979, at 28.5 C (83.3 F). The strongest colour marks a difference of 1.7 C (3.1 F).
Annual mean temperature at Cayo Arenas as warming stripes, 1933 to 1981
YearAnnual mean temperatureDifference from the station mean
193326.9 C+0.09 C
193526.9 C+0.08 C
193726.3 C-0.55 C
193825.2 C-1.59 C
196925.8 C-1.03 C
197026.3 C-0.55 C
197526.6 C-0.18 C
197626.8 C-0.06 C
197727.0 C+0.18 C
197827.5 C+0.66 C
197928.5 C+1.69 C
198128.1 C+1.30 C

This station does not have enough complete years (30 are needed) to fit a temperature trend.

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

1929 to 1985
Yearly extremes at Cayo Arenas: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)38.9 C (102.0 F)198033.9 C (93.0 F)36
Coldest night (TNn)11.7 C (53.1 F)193017.8 C (64.0 F)36
Wettest day (Rx1day)199.9 mm (7.9 in)194832.4 mm (1.3 in)54
Wettest five days (Rx5day)274.6 mm (10.8 in)194745.5 mm (1.8 in)54
Longest dry spell (CDD)276 days194489 days54

Hottest day (TXx)

Hottest day (TXx) at Cayo Arenas by year The hottest day of the year at Cayo Arenas, 1929 to 1985. The record is 38.9 C (102.0 F) in 1980, marked on the chart; the median year is 33.9 C (93.0 F). 25303540193019401950196019701980Record: 38.9 C (102.0 F) in 1980
The hottest day of the year at Cayo Arenas, 1929 to 1985. The record is 38.9 C (102.0 F) in 1980, marked on the chart; the median year is 33.9 C (93.0 F).
Hottest day (TXx) at Cayo Arenas by year
YearHottest day (TXx)
192935.0 C (95.0 F)
193036.7 C (98.1 F)
193131.7 C (89.1 F)
193233.9 C (93.0 F)
193332.2 C (90.0 F)
193433.9 C (93.0 F)
193535.0 C (95.0 F)
193633.9 C (93.0 F)
193733.9 C (93.0 F)
193833.9 C (93.0 F)
193930.6 C (87.1 F)
1940n/a
1941n/a
1942n/a
1943n/a
1944n/a
1945n/a
1946n/a
1947n/a
1948n/a
1949n/a
1950n/a
1951n/a
1952n/a
1953n/a
1954n/a
195528.9 C (84.0 F)
1956n/a
195735.6 C (96.1 F)
195835.0 C (95.0 F)
195935.0 C (95.0 F)
1962n/a
1963n/a
196431.7 C (89.1 F)
196535.0 C (95.0 F)
196631.7 C (89.1 F)
196734.4 C (93.9 F)
196832.8 C (91.0 F)
196932.8 C (91.0 F)
197032.8 C (91.0 F)
197131.7 C (89.1 F)
197227.8 C (82.0 F)
197435.6 C (96.1 F)
197533.9 C (93.0 F)
197633.9 C (93.0 F)
197735.6 C (96.1 F)
197835.6 C (96.1 F)
197936.7 C (98.1 F)
198038.9 C (102.0 F)
198135.6 C (96.1 F)
198235.0 C (95.0 F)
198333.9 C (93.0 F)
198432.8 C (91.0 F)
198532.8 C (91.0 F)

Coldest night (TNn)

Coldest night (TNn) at Cayo Arenas by year The coldest night of the year at Cayo Arenas, 1929 to 1985. The record is 11.7 C (53.1 F) in 1930, marked on the chart; the median year is 17.8 C (64.0 F). 1015202530193019401950196019701980Record: 11.7 C (53.1 F) in 1930
The coldest night of the year at Cayo Arenas, 1929 to 1985. The record is 11.7 C (53.1 F) in 1930, marked on the chart; the median year is 17.8 C (64.0 F).
Coldest night (TNn) at Cayo Arenas by year
YearColdest night (TNn)
192916.7 C (62.1 F)
193011.7 C (53.1 F)
193117.8 C (64.0 F)
193218.3 C (64.9 F)
193317.8 C (64.0 F)
193418.9 C (66.0 F)
193516.7 C (62.1 F)
193618.9 C (66.0 F)
193716.7 C (62.1 F)
193813.9 C (57.0 F)
193918.9 C (66.0 F)
1940n/a
1941n/a
1942n/a
1943n/a
1944n/a
1945n/a
1946n/a
1947n/a
1948n/a
1949n/a
1950n/a
1951n/a
1952n/a
1953n/a
1954n/a
195520.6 C (69.1 F)
1956n/a
195719.4 C (66.9 F)
195817.8 C (64.0 F)
195918.9 C (66.0 F)
1962n/a
1963n/a
196420.6 C (69.1 F)
196520.0 C (68.0 F)
196626.7 C (80.1 F)
196719.4 C (66.9 F)
196813.9 C (57.0 F)
196917.8 C (64.0 F)
197016.7 C (62.1 F)
197117.8 C (64.0 F)
197220.0 C (68.0 F)
197418.9 C (66.0 F)
197516.1 C (61.0 F)
197617.8 C (64.0 F)
197716.7 C (62.1 F)
197817.8 C (64.0 F)
197918.9 C (66.0 F)
198018.9 C (66.0 F)
198120.0 C (68.0 F)
198211.7 C (53.1 F)
198317.8 C (64.0 F)
198417.8 C (64.0 F)
198515.0 C (59.0 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Cayo Arenas by year The wettest day of the year at Cayo Arenas, 1929 to 1985. The record is 199.9 mm (7.9 in) in 1948, marked on the chart; the median year is 32.4 mm (1.3 in). 050100150200193019401950196019701980Record: 199.9 mm (7.9 in) in 1948
The wettest day of the year at Cayo Arenas, 1929 to 1985. The record is 199.9 mm (7.9 in) in 1948, marked on the chart; the median year is 32.4 mm (1.3 in).
Wettest day (Rx1day) at Cayo Arenas by year
YearWettest day (Rx1day)
192962.2 mm (2.4 in)
193033.8 mm (1.3 in)
193121.3 mm (0.8 in)
193239.9 mm (1.6 in)
193339.9 mm (1.6 in)
193456.9 mm (2.2 in)
193521.8 mm (0.9 in)
193648.8 mm (1.9 in)
19376.9 mm (0.27 in)
19382.8 mm (0.11 in)
19391.8 mm (0.07 in)
19408.9 mm (0.35 in)
19419.9 mm (0.39 in)
194213.0 mm (0.5 in)
194321.8 mm (0.9 in)
194423.9 mm (0.9 in)
194519.8 mm (0.8 in)
194665.5 mm (2.6 in)
1947190.0 mm (7.5 in)
1948199.9 mm (7.9 in)
194946.0 mm (1.8 in)
195059.9 mm (2.4 in)
1951199.9 mm (7.9 in)
195281.3 mm (3.2 in)
1953119.9 mm (4.7 in)
195435.8 mm (1.4 in)
195565.8 mm (2.6 in)
195615.0 mm (0.6 in)
195746.0 mm (1.8 in)
1958109.0 mm (4.3 in)
195959.9 mm (2.4 in)
196230.5 mm (1.2 in)
196314.0 mm (0.6 in)
19648.9 mm (0.35 in)
196534.8 mm (1.4 in)
196631.0 mm (1.2 in)
19674.8 mm (0.19 in)
196869.9 mm (2.8 in)
196969.9 mm (2.8 in)
197034.8 mm (1.4 in)
197130.0 mm (1.2 in)
197267.8 mm (2.7 in)
197461.5 mm (2.4 in)
1975113.8 mm (4.5 in)
197642.9 mm (1.7 in)
197719.8 mm (0.8 in)
197821.8 mm (0.9 in)
19790.0 mm (0.00 in)
19800.0 mm (0.00 in)
198117.3 mm (0.7 in)
19820.0 mm (0.00 in)
19830.0 mm (0.00 in)
19845.8 mm (0.23 in)
19856.9 mm (0.27 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Cayo Arenas by year The wettest five days of the year at Cayo Arenas, 1929 to 1985. The record is 274.6 mm (10.8 in) in 1947, marked on the chart; the median year is 45.5 mm (1.8 in). 0100200300193019401950196019701980Record: 274.6 mm (10.8 in) in 1947
The wettest five days of the year at Cayo Arenas, 1929 to 1985. The record is 274.6 mm (10.8 in) in 1947, marked on the chart; the median year is 45.5 mm (1.8 in).
Wettest five days (Rx5day) at Cayo Arenas by year
YearWettest five days (Rx5day)
192982.6 mm (3.3 in)
193056.9 mm (2.2 in)
193124.8 mm (1.0 in)
193243.0 mm (1.7 in)
193382.9 mm (3.3 in)
1934171.8 mm (6.8 in)
193521.8 mm (0.9 in)
193697.6 mm (3.8 in)
193748.8 mm (1.9 in)
19384.8 mm (0.19 in)
19393.6 mm (0.14 in)
19408.9 mm (0.35 in)
194114.7 mm (0.6 in)
194223.8 mm (0.9 in)
194321.8 mm (0.9 in)
194423.9 mm (0.9 in)
194526.6 mm (1.0 in)
194665.5 mm (2.6 in)
1947274.6 mm (10.8 in)
1948225.3 mm (8.9 in)
194946.0 mm (1.8 in)
195059.9 mm (2.4 in)
1951238.8 mm (9.4 in)
1952108.5 mm (4.3 in)
1953128.6 mm (5.1 in)
195440.3 mm (1.6 in)
195584.6 mm (3.3 in)
195617.8 mm (0.7 in)
1957101.4 mm (4.0 in)
1958145.5 mm (5.7 in)
195984.5 mm (3.3 in)
196240.9 mm (1.6 in)
196318.8 mm (0.7 in)
196414.5 mm (0.6 in)
196566.6 mm (2.6 in)
196654.9 mm (2.2 in)
19679.6 mm (0.38 in)
196869.9 mm (2.8 in)
196979.8 mm (3.1 in)
197045.0 mm (1.8 in)
197159.7 mm (2.4 in)
197267.8 mm (2.7 in)
1974166.4 mm (6.6 in)
1975121.7 mm (4.8 in)
1976118.5 mm (4.7 in)
197729.0 mm (1.1 in)
197821.8 mm (0.9 in)
19790.0 mm (0.00 in)
19800.0 mm (0.00 in)
198117.3 mm (0.7 in)
19820.0 mm (0.00 in)
19830.0 mm (0.00 in)
198410.6 mm (0.4 in)
198515.5 mm (0.6 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Cayo Arenas by year The longest dry spell of the year at Cayo Arenas, 1929 to 1985. The record is 276 days in 1944, marked on the chart; the median year is 89 days. 0100200300193019401950196019701980Record: 276 days in 1944
The longest dry spell of the year at Cayo Arenas, 1929 to 1985. The record is 276 days in 1944, marked on the chart; the median year is 89 days.
Longest dry spell (CDD) at Cayo Arenas by year
YearLongest dry spell (CDD)
192920 days
193078 days
1931150 days
1932111 days
1933187 days
1934159 days
1935211 days
1936105 days
193777 days
1938147 days
193976 days
1940162 days
194161 days
1942103 days
194377 days
1944276 days
1945159 days
1946101 days
194739 days
1948136 days
194990 days
1950176 days
1951145 days
195287 days
195391 days
195444 days
195583 days
195684 days
195723 days
195878 days
195926 days
196272 days
1963154 days
196435 days
196588 days
196645 days
196757 days
196877 days
196981 days
197089 days
197165 days
197280 days
197423 days
1975119 days
197674 days
197781 days
1978159 days
1979242 days
198091 days
1981150 days
1982122 days
1983134 days
198461 days
1985106 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.

Rainfall Return Levels

31 years, 1931 to 1985

A day with at least 39.1 mm (1.5 in) of rain is expected about once in 2 years. A day with at least 311.0 mm (12.2 in) of rain is expected about once in 100 years.

Rainfall return levels at Cayo Arenas: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years39.1 mm (1.5 in)
5 years84.5 mm (3.3 in)
10 years123.2 mm (4.9 in)
25 years185.0 mm (7.3 in)
50 years242.2 mm (9.5 in)Longer than the 31 years of record
100 years311.0 mm (12.2 in)Longer than the 31 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, 31 years of values from 1931 to 1985.

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: 199.9 mm (7.9 in) in 1948; 199.9 mm (7.9 in) in 1951; 190.0 mm (7.5 in) in 1947.

Download the Data

  • Data for Cayo Arenas standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Cayo Arenas 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).