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Data as of 2025-12-31
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Built 2026-10-19 (19 October 2026)

Mtwara Weather Records (TZ000063971)

Record envelope, standing records and threshold days for Mtwara (TZ000063971), Tanzania, with 69 years of record.

Key Facts for Mtwara

  • Mtwara (TZ000063971) is a weather station in Tanzania at -10.27 latitude and 40.18 longitude, 113 m (371 ft) above sea level.
  • The station reports from 1957 to 2025, 69 years of record.
  • 1,464 records set at Mtwara still stand.
  • Records are tracked for prcp: an element needs 30 years of data to be eligible.
  • Mtwara set a daily record precipitation of 6.6 mm (0.26 in) on 8 June 2025.

About the Station

  • Location: Tanzania, -10.27 latitude, 40.18 longitude.
  • Elevation: 113 m (371 ft).
  • Period of record: 1957 to 2025, 69 years.
  • Eligible elements: prcp.

Daily Record Envelope and 2026

7 days at or beyond a record
Daily record high and record low at Mtwara, with 2026 drawn through them The band shows the record high and record low for each calendar day at Mtwara. The lines show the 2026 daily maximum and minimum. 7 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. 101520253035 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Mtwara. The lines show the 2026 daily maximum and minimum. 7 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Mtwara, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan33.8 C (92.8 F)16.4 C (61.5 F)33.1 C (91.6 F)22.5 C (72.5 F)
Feb34.7 C (94.5 F)20.0 C (68.0 F)32.1 C (89.8 F)22.6 C (72.7 F)
Mar34.9 C (94.8 F)18.7 C (65.7 F)33.5 C (92.3 F)22.0 C (71.6 F)
Apr34.0 C (93.2 F)18.2 C (64.8 F)31.7 C (89.1 F)18.2 C (64.8 F)
May33.0 C (91.4 F)16.5 C (61.7 F)31.5 C (88.7 F)20.1 C (68.2 F)
Jun33.7 C (92.7 F)16.0 C (60.8 F)30.4 C (86.7 F)18.0 C (64.4 F)
Jul35.0 C (95.0 F)15.0 C (59.0 F)30.1 C (86.2 F)18.5 C (65.3 F)
Aug32.7 C (90.9 F)10.9 C (51.6 F)31.4 C (88.5 F)17.0 C (62.6 F)
Sep34.5 C (94.1 F)10.4 C (50.7 F)n/an/a
Oct34.6 C (94.3 F)15.8 C (60.4 F)n/an/a
Nov34.5 C (94.1 F)17.8 C (64.0 F)n/an/a
Dec34.6 C (94.3 F)16.4 C (61.5 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Mtwara by the year they were set 1,464 records at Mtwara still stand. 2020 holds the most, with 79. 0204060801973: 11975: 121976: 361977: 231978: 61979: 21980: 141981: 161982: 71983: 171984: 121985: 51986: 11987: 121988: 221989: 141990: 141991: 11992: 31994: 41995: 11997: 21998: 22000: 12001: 82002: 72003: 142004: 402005: 472006: 562007: 652008: 482009: 542010: 292011: 442012: 482013: 672014: 482015: 682016: 572017: 572018: 642019: 712020: 792021: 552022: 402023: 712024: 582025: 411973197919841989199520022007201220172022
1,464 records at Mtwara still stand. 2020 holds the most, with 79.
Standing records at Mtwara by the year they were set
Year setStanding records
19731
197512
197636
197723
19786
19792
198014
198116
19827
198317
198412
19855
19861
198712
198822
198914
199014
19911
19923
19944
19951
19972
19982
20001
20018
20027
200314
200440
200547
200656
200765
200848
200954
201029
201144
201248
201367
201448
201568
201657
201757
201864
201971
202079
202155
202240
202371
202458
202541

All-Time Record Progression

1 new records
When Mtwara set new all-time records 1 all-time records were set at Mtwara between 21 December 2002 and 21 December 2002. Each dot is a new record. Record daily precipitation21 December 2002: Record daily precipitation 482.1 mm (19.0 in)
1 all-time records were set at Mtwara between 21 December 2002 and 21 December 2002. Each dot is a new record.
When Mtwara set new all-time records
DateKindDetail
2002-12-21Record daily precipitationRecord daily precipitation 482.1 mm (19.0 in)

Wettest Day of Each Month

Dec: 482.1 mm (19.0 in)
Record daily precipitation for each month at Mtwara The wettest day on record for each calendar month at Mtwara. The most was 482.1 mm (19.0 in) on 21 December 2002. 0200400600 Jan: 369.8 mm (14.6 in), 13 January 2021 Jan Feb: 224.0 mm (8.8 in), 24 February 1997 Feb Mar: 232.7 mm (9.2 in), 26 March 1978 Mar Apr: 111.0 mm (4.4 in), 24 April 1968 Apr May: 96.0 mm (3.8 in), 27 May 1965 May Jun: 59.2 mm (2.3 in), 1 June 1984 Jun Jul: 25.7 mm (1.0 in), 17 July 1957 Jul Aug: 39.1 mm (1.5 in), 7 August 2006 Aug Sep: 77.3 mm (3.0 in), 9 September 1975 Sep Oct: 130.0 mm (5.1 in), 25 October 2008 Oct Nov: 90.9 mm (3.6 in), 13 November 2002 Nov Dec: 482.1 mm (19.0 in), 21 December 2002 Dec
The wettest day on record for each calendar month at Mtwara. The most was 482.1 mm (19.0 in) on 21 December 2002.
Record daily precipitation for each month at Mtwara
MonthRecord daily precipitation (mm)Date
Jan369.8 mm (14.6 in)13 January 2021
Feb224.0 mm (8.8 in)24 February 1997
Mar232.7 mm (9.2 in)26 March 1978
Apr111.0 mm (4.4 in)24 April 1968
May96.0 mm (3.8 in)27 May 1965
Jun59.2 mm (2.3 in)1 June 1984
Jul25.7 mm (1.0 in)17 July 1957
Aug39.1 mm (1.5 in)7 August 2006
Sep77.3 mm (3.0 in)9 September 1975
Oct130.0 mm (5.1 in)25 October 2008
Nov90.9 mm (3.6 in)13 November 2002
Dec482.1 mm (19.0 in)21 December 2002

Period of Record Coverage

1975 to 2025
Days with data per year at Mtwara 39 years of record at Mtwara, 1975 to 2025. 39 years have data for under 90 percent of days and are left out of rankings: 1975, 1976, 1977, 1978, 1979, 1980, 1981, 1982 and others. 1975: 30 of 365 days1976: 64 of 366 days1977: 51 of 365 days1978: 11 of 365 days1979: 2 of 365 days1980: 21 of 366 days1981: 31 of 365 days1982: 33 of 365 days1983: 62 of 365 days1984: 21 of 366 days1985: 4 of 365 days1986: 1 of 365 days1989: 1 of 365 days1990: 1 of 365 days1991: 1 of 365 days1998: 8 of 365 days2002: 2 of 365 days2004: 102 of 366 days2005: 150 of 365 days2006: 208 of 365 days2007: 246 of 365 days2008: 242 of 366 days2009: 199 of 365 days2010: 210 of 365 days2011: 248 of 365 days2012: 229 of 366 days2013: 215 of 365 days2014: 263 of 365 days2015: 273 of 365 days2016: 277 of 366 days2017: 268 of 365 days2018: 302 of 365 days2019: 280 of 365 days2020: 276 of 366 days2021: 309 of 365 days2022: 222 of 365 days2023: 276 of 365 days2024: 239 of 366 days2025: 140 of 365 days197519801985199020052010201520202025
39 years of record at Mtwara, 1975 to 2025. 39 years have data for under 90 percent of days and are left out of rankings: 1975, 1976, 1977, 1978, 1979, 1980, 1981, 1982 and others.
Days with data per year at Mtwara
YearDays with dataShare of yearComplete
1975308%No
19766417%No
19775114%No
1978113%No
197921%No
1980216%No
1981318%No
1982339%No
19836217%No
1984216%No
198541%No
198610%No
198910%No
199010%No
199110%No
199882%No
200221%No
200410228%No
200515041%No
200620857%No
200724667%No
200824266%No
200919955%No
201021058%No
201124868%No
201222963%No
201321559%No
201426372%No
201527375%No
201627776%No
201726873%No
201830283%No
201928077%No
202027675%No
202130985%No
202222261%No
202327676%No
202423965%No
202514038%No

Latest Records

20
Latest records at Mtwara
DateStationRecordValueBeat old record byOld record stoodSignificance
8 June 2025Mtwara, TZdaily rain6.6 mm (0.26 in)0.5 mm (0.02 in)28 years14 of 100 (Routine)
12 March 2025Mtwara, TZdaily rain129.3 mm (5.1 in)37.1 mm (1.5 in)60 years44 of 100 (Notable)
7 February 2025Mtwara, TZdaily rain95.5 mm (3.8 in)7.6 mm (0.30 in)38 years20 of 100 (Routine)
3 February 2025Mtwara, TZdaily rain78.2 mm (3.1 in)14.2 mm (0.6 in)63 years30 of 100 (Routine)
1 November 2024Mtwara, TZdaily rain10.2 mm (0.4 in)6.0 mm (0.24 in)38 years20 of 100 (Routine)
28 August 2024Mtwara, TZdaily rain6.1 mm (0.24 in)1.3 mm (0.05 in)55 years20 of 100 (Routine)
12 July 2024Mtwara, TZdaily rain3.0 mm (0.12 in)1.6 mm (0.06 in)44 years20 of 100 (Routine)
4 May 2024Mtwara, TZdaily rain90.7 mm (3.6 in)4.2 mm (0.17 in)35 years19 of 100 (Routine)
11 April 2024Mtwara, TZdaily rain57.9 mm (2.3 in)16.9 mm (0.7 in)60 years35 of 100 (Notable)
4 March 2024Mtwara, TZdaily rain62.0 mm (2.4 in)18.8 mm (0.7 in)64 years35 of 100 (Notable)
2 December 2023Mtwara, TZdaily rain62.5 mm (2.5 in)15.5 mm (0.6 in)16 years16 of 100 (Routine)
6 October 2023Mtwara, TZdaily rain3.6 mm (0.14 in)2.0 mm (0.08 in)54 years20 of 100 (Routine)
15 December 2022Mtwara, TZdaily rain110.0 mm (4.3 in)43.2 mm (1.7 in)60 years38 of 100 (Notable)
30 June 2022Mtwara, TZdaily rain4.1 mm (0.16 in)1.3 mm (0.05 in)56 years20 of 100 (Routine)
29 June 2022Mtwara, TZdaily rain13.0 mm (0.5 in)8.3 mm (0.33 in)47 years20 of 100 (Routine)
26 June 2022Mtwara, TZdaily rain5.8 mm (0.23 in)2.0 mm (0.08 in)60 years20 of 100 (Routine)
25 June 2022Mtwara, TZdaily rain3.6 mm (0.14 in)0.2 mm (0.01 in)32 years15 of 100 (Routine)
31 March 2022Mtwara, TZdaily rain59.9 mm (2.4 in)20.3 mm (0.8 in)47 years31 of 100 (Routine)
30 March 2022Mtwara, TZdaily rain59.9 mm (2.4 in)28.1 mm (1.1 in)64 years40 of 100 (Notable)
6 December 2021Mtwara, TZdaily rain66.8 mm (2.6 in)23.4 mm (0.9 in)54 years29 of 100 (Routine)

Extremes by Year

1957 to 2025
Yearly extremes at Mtwara: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)35.0 C (95.0 F)201633.5 C (92.3 F)39
Coldest night (TNn)10.4 C (50.7 F)201216.2 C (61.2 F)51
Wettest day (Rx1day)482.1 mm (19.0 in)200290.1 mm (3.5 in)68
Wettest five days (Rx5day)545.7 mm (21.5 in)1978160.7 mm (6.3 in)58
Longest dry spell (CDD)120 days198423 days67

Hottest day (TXx)

Hottest day (TXx) at Mtwara by year The hottest day of the year at Mtwara, 1957 to 2025. The record is 35.0 C (95.0 F) in 2016, marked on the chart; the median year is 33.5 C (92.3 F). 28303234361960198020002020Record: 35.0 C (95.0 F) in 2016
The hottest day of the year at Mtwara, 1957 to 2025. The record is 35.0 C (95.0 F) in 2016, marked on the chart; the median year is 33.5 C (92.3 F).
Hottest day (TXx) at Mtwara by year
YearHottest day (TXx)
1957n/a
1958n/a
1959n/a
1960n/a
1961n/a
1962n/a
1963n/a
1964n/a
1965n/a
1966n/a
1967n/a
1968n/a
1969n/a
1970n/a
1971n/a
1972n/a
1973n/a
1974n/a
197533.0 C (91.4 F)
197633.0 C (91.4 F)
197733.0 C (91.4 F)
197832.0 C (89.6 F)
197929.0 C (84.2 F)
198031.0 C (87.8 F)
198133.0 C (91.4 F)
198232.5 C (90.5 F)
198332.8 C (91.0 F)
198433.4 C (92.1 F)
198531.4 C (88.5 F)
198630.0 C (86.0 F)
1987n/a
1988n/a
198931.0 C (87.8 F)
199030.5 C (86.9 F)
199131.9 C (89.4 F)
1992n/a
1993n/a
1994n/a
1995n/a
1996n/a
1997n/a
199832.6 C (90.7 F)
1999n/a
2000n/a
2001n/a
200231.5 C (88.7 F)
2003n/a
200433.5 C (92.3 F)
200533.6 C (92.5 F)
200634.4 C (93.9 F)
200733.8 C (92.8 F)
200834.6 C (94.3 F)
200934.3 C (93.7 F)
201033.5 C (92.3 F)
201134.5 C (94.1 F)
201233.6 C (92.5 F)
201333.9 C (93.0 F)
201434.3 C (93.7 F)
201534.5 C (94.1 F)
201635.0 C (95.0 F)
201734.6 C (94.3 F)
201834.7 C (94.5 F)
201934.6 C (94.3 F)
202034.3 C (93.7 F)
202134.9 C (94.8 F)
202233.8 C (92.8 F)
202334.1 C (93.4 F)
202433.1 C (91.6 F)
202533.5 C (92.3 F)

Coldest night (TNn)

Coldest night (TNn) at Mtwara by year The coldest night of the year at Mtwara, 1957 to 2025. The record is 10.4 C (50.7 F) in 2012, marked on the chart; the median year is 16.2 C (61.2 F). 101520251960198020002020Record: 10.4 C (50.7 F) in 2012
The coldest night of the year at Mtwara, 1957 to 2025. The record is 10.4 C (50.7 F) in 2012, marked on the chart; the median year is 16.2 C (61.2 F).
Coldest night (TNn) at Mtwara by year
YearColdest night (TNn)
1957n/a
1958n/a
1959n/a
1960n/a
1961n/a
1962n/a
1963n/a
1964n/a
1965n/a
1966n/a
1967n/a
1968n/a
1969n/a
1970n/a
1971n/a
1972n/a
197319.0 C (66.2 F)
197418.0 C (64.4 F)
197515.0 C (59.0 F)
197613.0 C (55.4 F)
197717.0 C (62.6 F)
197816.0 C (60.8 F)
197916.0 C (60.8 F)
198017.0 C (62.6 F)
198117.0 C (62.6 F)
198218.4 C (65.1 F)
198316.5 C (61.7 F)
198414.2 C (57.6 F)
198517.2 C (63.0 F)
198618.0 C (64.4 F)
198716.4 C (61.5 F)
198813.2 C (55.8 F)
198916.0 C (60.8 F)
199014.5 C (58.1 F)
199115.5 C (59.9 F)
199216.4 C (61.5 F)
1993n/a
199417.2 C (63.0 F)
199517.3 C (63.1 F)
1996n/a
199716.5 C (61.7 F)
199818.0 C (64.4 F)
199922.8 C (73.0 F)
200021.0 C (69.8 F)
200116.0 C (60.8 F)
200214.8 C (58.6 F)
200316.1 C (61.0 F)
200416.0 C (60.8 F)
200510.5 C (50.9 F)
200616.3 C (61.3 F)
200717.2 C (63.0 F)
200810.9 C (51.6 F)
200917.4 C (63.3 F)
201016.4 C (61.5 F)
201116.2 C (61.2 F)
201210.4 C (50.7 F)
201315.0 C (59.0 F)
201416.5 C (61.7 F)
201515.5 C (59.9 F)
201614.7 C (58.5 F)
201715.9 C (60.6 F)
201816.0 C (60.8 F)
201916.2 C (61.2 F)
202017.0 C (62.6 F)
202114.1 C (57.4 F)
202216.2 C (61.2 F)
202317.8 C (64.0 F)
202416.0 C (60.8 F)
202517.0 C (62.6 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Mtwara by year The wettest day of the year at Mtwara, 1957 to 2025. The record is 482.1 mm (19.0 in) in 2002, marked on the chart; the median year is 90.1 mm (3.5 in). 02004006001960198020002020Record: 482.1 mm (19.0 in) in 2002
The wettest day of the year at Mtwara, 1957 to 2025. The record is 482.1 mm (19.0 in) in 2002, marked on the chart; the median year is 90.1 mm (3.5 in).
Wettest day (Rx1day) at Mtwara by year
YearWettest day (Rx1day)
1957141.0 mm (5.6 in)
195874.2 mm (2.9 in)
1959184.2 mm (7.3 in)
196079.8 mm (3.1 in)
196166.8 mm (2.6 in)
196281.3 mm (3.2 in)
196388.5 mm (3.5 in)
1964113.2 mm (4.5 in)
196596.0 mm (3.8 in)
196672.5 mm (2.9 in)
1967120.0 mm (4.7 in)
1968111.0 mm (4.4 in)
1969155.6 mm (6.1 in)
197062.7 mm (2.5 in)
197172.5 mm (2.9 in)
197270.2 mm (2.8 in)
1973133.6 mm (5.3 in)
197496.1 mm (3.8 in)
197589.4 mm (3.5 in)
1976159.3 mm (6.3 in)
197770.7 mm (2.8 in)
1978232.7 mm (9.2 in)
1979143.9 mm (5.7 in)
1980109.3 mm (4.3 in)
1981100.3 mm (3.9 in)
198282.1 mm (3.2 in)
198369.3 mm (2.7 in)
1984101.5 mm (4.0 in)
198553.3 mm (2.1 in)
198670.9 mm (2.8 in)
1987104.8 mm (4.1 in)
198882.5 mm (3.2 in)
198986.5 mm (3.4 in)
199078.0 mm (3.1 in)
199121.1 mm (0.8 in)
199221.1 mm (0.8 in)
199331.0 mm (1.2 in)
1994180.1 mm (7.1 in)
199597.0 mm (3.8 in)
19962.0 mm (0.08 in)
1997224.0 mm (8.8 in)
199843.9 mm (1.7 in)
1999n/a
200013.0 mm (0.5 in)
200139.1 mm (1.5 in)
2002482.1 mm (19.0 in)
2003134.1 mm (5.3 in)
200487.9 mm (3.5 in)
200558.9 mm (2.3 in)
200655.1 mm (2.2 in)
200740.9 mm (1.6 in)
2008130.0 mm (5.1 in)
200955.9 mm (2.2 in)
201055.9 mm (2.2 in)
2011101.1 mm (4.0 in)
201241.9 mm (1.6 in)
2013112.0 mm (4.4 in)
201477.0 mm (3.0 in)
201570.1 mm (2.8 in)
2016111.0 mm (4.4 in)
2017202.9 mm (8.0 in)
2018286.0 mm (11.3 in)
2019179.3 mm (7.1 in)
2020128.8 mm (5.1 in)
2021369.8 mm (14.6 in)
2022110.0 mm (4.3 in)
202397.0 mm (3.8 in)
202490.7 mm (3.6 in)
2025129.3 mm (5.1 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Mtwara by year The wettest five days of the year at Mtwara, 1957 to 2025. The record is 545.7 mm (21.5 in) in 1978, marked on the chart; the median year is 160.7 mm (6.3 in). 02004006001960198020002020Record: 545.7 mm (21.5 in) in 1978
The wettest five days of the year at Mtwara, 1957 to 2025. The record is 545.7 mm (21.5 in) in 1978, marked on the chart; the median year is 160.7 mm (6.3 in).
Wettest five days (Rx5day) at Mtwara by year
YearWettest five days (Rx5day)
1957251.0 mm (9.9 in)
1958252.3 mm (9.9 in)
1959424.0 mm (16.7 in)
1960279.1 mm (11.0 in)
1961143.0 mm (5.6 in)
1962265.4 mm (10.4 in)
1963236.2 mm (9.3 in)
1964129.2 mm (5.1 in)
1965202.5 mm (8.0 in)
1966208.6 mm (8.2 in)
1967195.6 mm (7.7 in)
1968183.2 mm (7.2 in)
1969160.0 mm (6.3 in)
197092.8 mm (3.7 in)
197190.8 mm (3.6 in)
1972151.4 mm (6.0 in)
1973192.5 mm (7.6 in)
1974132.4 mm (5.2 in)
1975118.2 mm (4.7 in)
1976178.0 mm (7.0 in)
1977140.8 mm (5.5 in)
1978545.7 mm (21.5 in)
1979179.4 mm (7.1 in)
1980156.5 mm (6.2 in)
1981144.2 mm (5.7 in)
1982121.4 mm (4.8 in)
1983167.8 mm (6.6 in)
1984114.4 mm (4.5 in)
198592.8 mm (3.7 in)
1986191.2 mm (7.5 in)
1987198.2 mm (7.8 in)
1988140.7 mm (5.5 in)
1989155.4 mm (6.1 in)
1990180.0 mm (7.1 in)
1991n/a
1992n/a
1993n/a
1994n/a
1995n/a
1996n/a
1997n/a
199869.6 mm (2.7 in)
1999n/a
2000n/a
200133.5 mm (1.3 in)
2002n/a
2003n/a
2004172.7 mm (6.8 in)
200567.0 mm (2.6 in)
2006156.2 mm (6.1 in)
2007129.9 mm (5.1 in)
2008114.0 mm (4.5 in)
2009108.0 mm (4.3 in)
2010122.2 mm (4.8 in)
2011180.3 mm (7.1 in)
2012106.9 mm (4.2 in)
2013203.7 mm (8.0 in)
2014118.1 mm (4.6 in)
2015122.9 mm (4.8 in)
2016190.2 mm (7.5 in)
2017263.7 mm (10.4 in)
2018326.6 mm (12.9 in)
2019218.7 mm (8.6 in)
2020198.3 mm (7.8 in)
2021377.2 mm (14.9 in)
2022134.5 mm (5.3 in)
2023161.3 mm (6.4 in)
2024111.0 mm (4.4 in)
2025234.7 mm (9.2 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Mtwara by year The longest dry spell of the year at Mtwara, 1957 to 2025. The record is 120 days in 1984, marked on the chart; the median year is 23 days. 0501001501960198020002020Record: 120 days in 1984
The longest dry spell of the year at Mtwara, 1957 to 2025. The record is 120 days in 1984, marked on the chart; the median year is 23 days.
Longest dry spell (CDD) at Mtwara by year
YearLongest dry spell (CDD)
195757 days
1958101 days
195965 days
196051 days
196133 days
196245 days
196341 days
196444 days
196530 days
196641 days
196741 days
196824 days
196931 days
197027 days
197127 days
197244 days
197346 days
197452 days
197548 days
197664 days
197772 days
197860 days
197935 days
198044 days
198178 days
198238 days
198335 days
1984120 days
198543 days
198664 days
198753 days
198837 days
198927 days
199023 days
19911 day
1992n/a
19931 day
19941 day
19952 days
19962 days
19973 days
19983 days
1999n/a
20001 day
20012 days
20022 days
20031 day
200418 days
20053 days
20064 days
20075 days
20082 days
20095 days
20105 days
20112 days
20122 days
20133 days
20143 days
20153 days
20163 days
20174 days
20183 days
20193 days
20204 days
20214 days
20224 days
20233 days
20244 days
20253 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

33 years, 1957 to 1989

A day with at least 91.5 mm (3.6 in) of rain is expected about once in 2 years. A day with at least 265.7 mm (10.5 in) of rain is expected about once in 100 years.

Rainfall return levels at Mtwara: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years91.5 mm (3.6 in)
5 years123.8 mm (4.9 in)
10 years150.0 mm (5.9 in)
25 years189.8 mm (7.5 in)
50 years225.0 mm (8.9 in)Longer than the 33 years of record
100 years265.7 mm (10.5 in)Longer than the 33 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, 33 years of values from 1957 to 1989.

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: 232.7 mm (9.2 in) in 1978; 184.2 mm (7.3 in) in 1959; 159.3 mm (6.3 in) in 1976.

Download the Data

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