Daily records
Page built 2026-10-17
Data as of 2026-10-15
Search
Built 2026-10-17 (17 October 2026)

Chuuk WSO AP Weather Records (FMW00040505)

Record envelope, standing records and threshold days for Chuuk WSO AP (FMW00040505), FM, Federated States of Micronesia, with 76 years of record.

Key Facts for Chuuk WSO AP

  • Chuuk WSO AP (FMW00040505) is a weather station in FM, Federated States of Micronesia at 7.47 latitude and 151.85 longitude, 2 m (5 ft) above sea level.
  • The station reports from 1951 to 2026, 76 years of record.
  • 1,464 records set at Chuuk WSO AP still stand.
  • Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
  • Chuuk WSO AP tied a monthly record high maximum temperature of 33.3 C (91.9 F) on 11 October 2026 (provisional).

Provisional Records

Records set in the last 60 days are provisional until they clear the revision window.

About the Station

  • Location: FM, Federated States of Micronesia, 7.47 latitude, 151.85 longitude.
  • Elevation: 2 m (5 ft).
  • Period of record: 1951 to 2026, 76 years.
  • Eligible elements: tmax, tmin, prcp, snow, snwd.

Daily Record Envelope and 2026

15 days at or beyond a record
Daily record high and record low at Chuuk WSO AP, with 2026 drawn through them The band shows the record high and record low for each calendar day at Chuuk WSO AP. The lines show the 2026 daily maximum and minimum. 15 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. 152025303540 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Chuuk WSO AP. The lines show the 2026 daily maximum and minimum. 15 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Chuuk WSO AP, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan34.4 C (93.9 F)20.0 C (68.0 F)31.1 C (88.0 F)24.4 C (75.9 F)
Feb35.0 C (95.0 F)19.4 C (66.9 F)32.2 C (90.0 F)23.9 C (75.0 F)
Mar35.6 C (96.1 F)20.0 C (68.0 F)31.7 C (89.1 F)23.9 C (75.0 F)
Apr34.4 C (93.9 F)20.0 C (68.0 F)34.4 C (93.9 F)23.3 C (73.9 F)
May34.4 C (93.9 F)19.4 C (66.9 F)34.4 C (93.9 F)23.3 C (73.9 F)
Jun33.9 C (93.0 F)20.0 C (68.0 F)32.2 C (90.0 F)24.4 C (75.9 F)
Jul33.7 C (92.7 F)19.4 C (66.9 F)32.2 C (90.0 F)23.9 C (75.0 F)
Aug35.6 C (96.1 F)20.6 C (69.1 F)32.2 C (90.0 F)22.2 C (72.0 F)
Sep34.0 C (93.2 F)19.4 C (66.9 F)32.8 C (91.0 F)23.3 C (73.9 F)
Oct33.3 C (91.9 F)17.8 C (64.0 F)33.3 C (91.9 F)24.4 C (75.9 F)
Nov33.3 C (91.9 F)18.9 C (66.0 F)n/an/a
Dec33.9 C (93.0 F)20.6 C (69.1 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Chuuk WSO AP by the year they were set 1,464 records at Chuuk WSO AP still stand. 1999 holds the most, with 156. 0501001502001951: 101952: 201953: 121954: 161955: 191956: 211957: 141958: 241959: 171960: 131961: 121962: 151963: 131964: 141965: 181966: 101967: 101968: 141969: 71970: 61971: 111972: 141973: 71974: 101975: 71976: 141977: 101978: 101979: 151980: 131981: 291982: 141983: 151984: 241985: 91986: 171987: 141988: 131989: 101990: 91991: 101992: 91993: 81994: 71995: 101996: 161997: 521998: 761999: 1562000: 292001: 42002: 142003: 12004: 22005: 82006: 72007: 102008: 102009: 52010: 412011: 102012: 482013: 142014: 132015: 192016: 302017: 542018: 192019: 372020: 302021: 162022: 172023: 272024: 562025: 292026: 201951195919671975198319911999200720152023
1,464 records at Chuuk WSO AP still stand. 1999 holds the most, with 156.
Standing records at Chuuk WSO AP by the year they were set
Year setStanding records
195110
195220
195312
195416
195519
195621
195714
195824
195917
196013
196112
196215
196313
196414
196518
196610
196710
196814
19697
19706
197111
197214
19737
197410
19757
197614
197710
197810
197915
198013
198129
198214
198315
198424
19859
198617
198714
198813
198910
19909
199110
19929
19938
19947
199510
199616
199752
199876
1999156
200029
20014
200214
20031
20042
20058
20067
200710
200810
20095
201041
201110
201248
201314
201413
201519
201630
201754
201819
201937
202030
202116
202217
202327
202456
202529
202620

All-Time Record Progression

4 new records
When Chuuk WSO AP set new all-time records 4 all-time records were set at Chuuk WSO AP between 4 October 1999 and 23 November 2016. Each dot is a new record. Record low minimum temperatureRecord daily precipitationRecord high maximum temperatureRecord high minimum temperature4 October 1999: Record low minimum temperature 17.8 C (64.0 F)2 July 2002: Record daily precipitation 501.4 mm (19.7 in)23 August 2004: Record high maximum temperature 35.6 C (96.1 F)23 November 2016: Record high minimum temperature 28.9 C (84.0 F)2000200520102015
4 all-time records were set at Chuuk WSO AP between 4 October 1999 and 23 November 2016. Each dot is a new record.
When Chuuk WSO AP set new all-time records
DateKindDetail
1999-10-04Record low minimum temperatureRecord low minimum temperature 17.8 C (64.0 F)
2002-07-02Record daily precipitationRecord daily precipitation 501.4 mm (19.7 in)
2004-08-23Record high maximum temperatureRecord high maximum temperature 35.6 C (96.1 F)
2016-11-23Record high minimum temperatureRecord high minimum temperature 28.9 C (84.0 F)

Wettest Day of Each Month

Jul: 501.4 mm (19.7 in)
Record daily precipitation for each month at Chuuk WSO AP The wettest day on record for each calendar month at Chuuk WSO AP. The most was 501.4 mm (19.7 in) on 2 July 2002. 0200400600 Jan: 188.5 mm (7.4 in), 11 January 2015 Jan Feb: 164.3 mm (6.5 in), 28 February 2002 Feb Mar: 208.5 mm (8.2 in), 1 March 1972 Mar Apr: 174.5 mm (6.9 in), 17 April 1989 Apr May: 221.0 mm (8.7 in), 18 May 1976 May Jun: 158.8 mm (6.3 in), 4 June 1972 Jun Jul: 501.4 mm (19.7 in), 2 July 2002 Jul Aug: 131.3 mm (5.2 in), 4 August 2012 Aug Sep: 155.4 mm (6.1 in), 27 September 1978 Sep Oct: 135.6 mm (5.3 in), 14 October 2009 Oct Nov: 204.7 mm (8.1 in), 8 November 1962 Nov Dec: 378.5 mm (14.9 in), 31 December 1959 Dec
The wettest day on record for each calendar month at Chuuk WSO AP. The most was 501.4 mm (19.7 in) on 2 July 2002.
Record daily precipitation for each month at Chuuk WSO AP
MonthRecord daily precipitation (mm)Date
Jan188.5 mm (7.4 in)11 January 2015
Feb164.3 mm (6.5 in)28 February 2002
Mar208.5 mm (8.2 in)1 March 1972
Apr174.5 mm (6.9 in)17 April 1989
May221.0 mm (8.7 in)18 May 1976
Jun158.8 mm (6.3 in)4 June 1972
Jul501.4 mm (19.7 in)2 July 2002
Aug131.3 mm (5.2 in)4 August 2012
Sep155.4 mm (6.1 in)27 September 1978
Oct135.6 mm (5.3 in)14 October 2009
Nov204.7 mm (8.1 in)8 November 1962
Dec378.5 mm (14.9 in)31 December 1959

Period of Record Coverage

1951 to 2026
Days with data per year at Chuuk WSO AP 76 years of record at Chuuk WSO AP, 1951 to 2026. 2 years have data for under 90 percent of days and are left out of rankings: 1951, 2026. 1951: 184 of 365 days1952: 366 of 366 days1953: 365 of 365 days1954: 365 of 365 days1955: 365 of 365 days1956: 366 of 366 days1957: 365 of 365 days1958: 365 of 365 days1959: 365 of 365 days1960: 366 of 366 days1961: 365 of 365 days1962: 365 of 365 days1963: 365 of 365 days1964: 366 of 366 days1965: 365 of 365 days1966: 365 of 365 days1967: 365 of 365 days1968: 366 of 366 days1969: 365 of 365 days1970: 365 of 365 days1971: 365 of 365 days1972: 366 of 366 days1973: 365 of 365 days1974: 365 of 365 days1975: 365 of 365 days1976: 366 of 366 days1977: 365 of 365 days1978: 365 of 365 days1979: 365 of 365 days1980: 366 of 366 days1981: 365 of 365 days1982: 365 of 365 days1983: 365 of 365 days1984: 366 of 366 days1985: 365 of 365 days1986: 365 of 365 days1987: 365 of 365 days1988: 366 of 366 days1989: 365 of 365 days1990: 365 of 365 days1991: 365 of 365 days1992: 366 of 366 days1993: 365 of 365 days1994: 365 of 365 days1995: 365 of 365 days1996: 366 of 366 days1997: 365 of 365 days1998: 365 of 365 days1999: 365 of 365 days2000: 366 of 366 days2001: 365 of 365 days2002: 365 of 365 days2003: 365 of 365 days2004: 366 of 366 days2005: 365 of 365 days2006: 365 of 365 days2007: 365 of 365 days2008: 366 of 366 days2009: 365 of 365 days2010: 365 of 365 days2011: 365 of 365 days2012: 366 of 366 days2013: 365 of 365 days2014: 365 of 365 days2015: 365 of 365 days2016: 366 of 366 days2017: 365 of 365 days2018: 365 of 365 days2019: 365 of 365 days2020: 366 of 366 days2021: 365 of 365 days2022: 364 of 365 days2023: 365 of 365 days2024: 337 of 366 days2025: 365 of 365 days2026: 284 of 365 days1960197019801990200020102020
76 years of record at Chuuk WSO AP, 1951 to 2026. 2 years have data for under 90 percent of days and are left out of rankings: 1951, 2026.
Days with data per year at Chuuk WSO AP
YearDays with dataShare of yearComplete
195118450%No
1952366100%Yes
1953365100%Yes
1954365100%Yes
1955365100%Yes
1956366100%Yes
1957365100%Yes
1958365100%Yes
1959365100%Yes
1960366100%Yes
1961365100%Yes
1962365100%Yes
1963365100%Yes
1964366100%Yes
1965365100%Yes
1966365100%Yes
1967365100%Yes
1968366100%Yes
1969365100%Yes
1970365100%Yes
1971365100%Yes
1972366100%Yes
1973365100%Yes
1974365100%Yes
1975365100%Yes
1976366100%Yes
1977365100%Yes
1978365100%Yes
1979365100%Yes
1980366100%Yes
1981365100%Yes
1982365100%Yes
1983365100%Yes
1984366100%Yes
1985365100%Yes
1986365100%Yes
1987365100%Yes
1988366100%Yes
1989365100%Yes
1990365100%Yes
1991365100%Yes
1992366100%Yes
1993365100%Yes
1994365100%Yes
1995365100%Yes
1996366100%Yes
1997365100%Yes
1998365100%Yes
1999365100%Yes
2000366100%Yes
2001365100%Yes
2002365100%Yes
2003365100%Yes
2004366100%Yes
2005365100%Yes
2006365100%Yes
2007365100%Yes
2008366100%Yes
2009365100%Yes
2010365100%Yes
2011365100%Yes
2012366100%Yes
2013365100%Yes
2014365100%Yes
2015365100%Yes
2016366100%Yes
2017365100%Yes
2018365100%Yes
2019365100%Yes
2020366100%Yes
2021365100%Yes
2022364100%Yes
2023365100%Yes
202433792%Yes
2025365100%Yes
202628478%No

Latest Records

20
Latest records at Chuuk WSO AP
DateStationRecordValueBeat old record byOld record stoodSignificance
11 October 2026Chuuk WSO AP, FMmonthly high max (Tie, Provisional)33.3 C (91.9 F)tie68 years9 of 100 (Routine)
10 October 2026Chuuk WSO AP, FMmonthly high max (Tie, Provisional)33.3 C (91.9 F)tie68 years9 of 100 (Routine)
10 October 2026Chuuk WSO AP, FMdaily high min (Tie, Provisional)27.2 C (81.0 F)tie11 years2 of 100 (Routine)
9 October 2026Chuuk WSO AP, FMdaily high min (Tie, Provisional)27.2 C (81.0 F)tie33 years4 of 100 (Routine)
8 October 2026Chuuk WSO AP, FMdaily high max (Tie, Provisional)32.8 C (91.0 F)tie5 years2 of 100 (Routine)
7 October 2026Chuuk WSO AP, FMdaily high min (Provisional)27.3 C (81.1 F)0.6 C (1.1 F)11 years14 of 100 (Routine)
4 October 2026Chuuk WSO AP, FMdaily high max (Tie, Provisional)32.8 C (91.0 F)tie3 years1 of 100 (Routine)
3 October 2026Chuuk WSO AP, FMdaily high max (Tie, Provisional)32.2 C (90.0 F)tie60 years6 of 100 (Routine)
30 September 2026Chuuk WSO AP, FMdaily high min (Provisional)27.8 C (82.0 F)0.6 C (1.1 F)8 years13 of 100 (Routine)
29 September 2026Chuuk WSO AP, FMdaily high min (Provisional)27.8 C (82.0 F)0.5 C (0.9 F)8 years13 of 100 (Routine)
24 September 2026Chuuk WSO AP, FMdaily high min (Tie, Provisional)26.7 C (80.1 F)tie8 years2 of 100 (Routine)
21 September 2026Chuuk WSO AP, FMdaily low max (Tie, Provisional)27.8 C (82.0 F)tie35 years4 of 100 (Routine)
17 September 2026Chuuk WSO AP, FMdaily high min (Tie, Provisional)26.7 C (80.1 F)tie11 years2 of 100 (Routine)
16 September 2026Chuuk WSO AP, FMdaily high min (Provisional)27.8 C (82.0 F)0.6 C (1.1 F)11 years14 of 100 (Routine)
15 September 2026Chuuk WSO AP, FMdaily high max (Tie, Provisional)32.8 C (91.0 F)tie47 years5 of 100 (Routine)
14 September 2026Chuuk WSO AP, FMdaily high min (Provisional)27.8 C (82.0 F)1.1 C (2.0 F)56 years32 of 100 (Routine)
7 September 2026Chuuk WSO AP, FMdaily high min (Tie, Provisional)26.7 C (80.1 F)tie16 years2 of 100 (Routine)
31 August 2026Chuuk WSO AP, FMdaily high min (Tie, Provisional)26.7 C (80.1 F)tie32 years4 of 100 (Routine)
30 August 2026Chuuk WSO AP, FMdaily rain (Provisional)50.5 mm (2.0 in)12.1 mm (0.5 in)31 years22 of 100 (Routine)
30 August 2026Chuuk WSO AP, FMdaily high min (Tie, Provisional)26.7 C (80.1 F)tie17 years3 of 100 (Routine)

Climate Trend

73 complete years, 1952 to 2025
Annual mean temperature at Chuuk WSO AP as warming stripes, 1952 to 2025 One stripe for each of 73 complete years at Chuuk WSO AP, 1952 to 2025. Blue stripes are years cooler than the station's own mean of 27.7 C (81.8 F); red stripes are warmer. The coolest year was 1999, at 26.6 C (79.9 F), and the warmest was 2017, at 28.6 C (83.5 F). The strongest colour marks a difference of 1.1 C (2.0 F). 1952: 27.1 C, -0.6 C from the station mean1953: 27.2 C, -0.5 C from the station mean1954: 27.2 C, -0.5 C from the station mean1955: 27.1 C, -0.6 C from the station mean1956: 27.1 C, -0.6 C from the station mean1957: 27.5 C, -0.1 C from the station mean1958: 27.7 C, 0.0 C from the station mean1959: 27.5 C, -0.2 C from the station mean1960: 27.4 C, -0.2 C from the station mean1961: 27.3 C, -0.4 C from the station mean1962: 27.3 C, -0.4 C from the station mean1963: 27.2 C, -0.5 C from the station mean1964: 27.2 C, -0.5 C from the station mean1965: 26.9 C, -0.8 C from the station mean1966: 27.3 C, -0.3 C from the station mean1967: 27.2 C, -0.5 C from the station mean1968: 27.2 C, -0.5 C from the station mean1969: 27.3 C, -0.3 C from the station mean1970: 27.7 C, 0.0 C from the station mean1971: 27.4 C, -0.3 C from the station mean1972: 27.3 C, -0.4 C from the station mean1973: 27.7 C, 0.0 C from the station mean1974: 27.5 C, -0.2 C from the station mean1975: 27.4 C, -0.3 C from the station mean1976: 27.3 C, -0.4 C from the station mean1977: 27.7 C, 0.0 C from the station mean1978: 27.8 C, +0.1 C from the station mean1979: 27.7 C, 0.0 C from the station mean1980: 27.4 C, -0.2 C from the station mean1981: 27.9 C, +0.3 C from the station mean1982: 27.9 C, +0.2 C from the station mean1983: 28.0 C, +0.3 C from the station mean1984: 28.0 C, +0.4 C from the station mean1985: 27.9 C, +0.3 C from the station mean1986: 27.8 C, +0.2 C from the station mean1987: 28.0 C, +0.3 C from the station mean1988: 28.1 C, +0.5 C from the station mean1989: 27.8 C, +0.1 C from the station mean1990: 27.7 C, +0.1 C from the station mean1991: 27.7 C, 0.0 C from the station mean1992: 27.8 C, +0.1 C from the station mean1993: 27.5 C, -0.2 C from the station mean1994: 27.6 C, -0.1 C from the station mean1995: 27.7 C, 0.0 C from the station mean1996: 27.5 C, -0.1 C from the station mean1997: 27.0 C, -0.6 C from the station mean1998: 27.2 C, -0.4 C from the station mean1999: 26.6 C, -1.1 C from the station mean2000: 27.9 C, +0.3 C from the station mean2001: 27.4 C, -0.3 C from the station mean2002: 27.1 C, -0.5 C from the station mean2003: 27.3 C, -0.4 C from the station mean2004: 27.7 C, 0.0 C from the station mean2005: 27.8 C, +0.1 C from the station mean2006: 27.8 C, +0.2 C from the station mean2007: 27.9 C, +0.2 C from the station mean2008: 27.8 C, +0.1 C from the station mean2009: 28.0 C, +0.3 C from the station mean2010: 28.2 C, +0.6 C from the station mean2011: 27.9 C, +0.3 C from the station mean2012: 28.2 C, +0.5 C from the station mean2013: 28.0 C, +0.4 C from the station mean2014: 28.0 C, +0.4 C from the station mean2015: 28.1 C, +0.4 C from the station mean2016: 28.4 C, +0.7 C from the station mean2017: 28.6 C, +0.9 C from the station mean2018: 28.4 C, +0.7 C from the station mean2019: 28.3 C, +0.7 C from the station mean2020: 28.4 C, +0.7 C from the station mean2021: 28.0 C, +0.4 C from the station mean2022: 28.0 C, +0.4 C from the station mean2023: 28.3 C, +0.7 C from the station mean2025: 28.4 C, +0.7 C from the station mean19521960197019801990200020102020
One stripe for each of 73 complete years at Chuuk WSO AP, 1952 to 2025. Blue stripes are years cooler than the station's own mean of 27.7 C (81.8 F); red stripes are warmer. The coolest year was 1999, at 26.6 C (79.9 F), and the warmest was 2017, at 28.6 C (83.5 F). The strongest colour marks a difference of 1.1 C (2.0 F).
Annual mean temperature at Chuuk WSO AP as warming stripes, 1952 to 2025
YearAnnual mean temperatureDifference from the station mean
195227.1 C-0.60 C
195327.2 C-0.45 C
195427.2 C-0.47 C
195527.1 C-0.59 C
195627.1 C-0.55 C
195727.5 C-0.11 C
195827.7 C+0.01 C
195927.5 C-0.19 C
196027.4 C-0.23 C
196127.3 C-0.35 C
196227.3 C-0.40 C
196327.2 C-0.50 C
196427.2 C-0.47 C
196526.9 C-0.78 C
196627.3 C-0.33 C
196727.2 C-0.48 C
196827.2 C-0.47 C
196927.3 C-0.33 C
197027.7 C+0.03 C
197127.4 C-0.26 C
197227.3 C-0.35 C
197327.7 C0.00 C
197427.5 C-0.17 C
197527.4 C-0.27 C
197627.3 C-0.39 C
197727.7 C+0.01 C
197827.8 C+0.11 C
197927.7 C+0.02 C
198027.4 C-0.21 C
198127.9 C+0.28 C
198227.9 C+0.25 C
198328.0 C+0.34 C
198428.0 C+0.38 C
198527.9 C+0.29 C
198627.8 C+0.18 C
198728.0 C+0.33 C
198828.1 C+0.49 C
198927.8 C+0.13 C
199027.7 C+0.08 C
199127.7 C+0.01 C
199227.8 C+0.14 C
199327.5 C-0.16 C
199427.6 C-0.07 C
199527.7 C0.00 C
199627.5 C-0.14 C
199727.0 C-0.64 C
199827.2 C-0.44 C
199926.6 C-1.06 C
200027.9 C+0.29 C
200127.4 C-0.25 C
200227.1 C-0.51 C
200327.3 C-0.39 C
200427.7 C+0.03 C
200527.8 C+0.15 C
200627.8 C+0.17 C
200727.9 C+0.22 C
200827.8 C+0.14 C
200928.0 C+0.35 C
201028.2 C+0.56 C
201127.9 C+0.28 C
201228.2 C+0.55 C
201328.0 C+0.36 C
201428.0 C+0.36 C
201528.1 C+0.43 C
201628.4 C+0.70 C
201728.6 C+0.95 C
201828.4 C+0.70 C
201928.3 C+0.66 C
202028.4 C+0.75 C
202128.0 C+0.38 C
202228.0 C+0.39 C
202328.3 C+0.69 C
202528.4 C+0.72 C

The annual mean temperature here has risen by 0.1 C (0.1 to 0.2) per decade over 1952 to 2025. In Fahrenheit: 0.2 F (0.2 to 0.3) per decade. The slope is a straight line fitted to 73 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Chuuk WSO AP
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature0.1 C (0.1 to 0.2) per decade0.2 F (0.2 to 0.3) per decade1952 to 202573Rise
Mean daily maximum0.1 C (0.1 to 0.1) per decade0.2 F (0.1 to 0.3) per decade1952 to 202573Rise
Mean daily minimum0.2 C (0.1 to 0.2) per decade0.3 F (0.2 to 0.4) per decade1952 to 202573Rise

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

1951 to 2026
Yearly extremes at Chuuk WSO AP: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)35.6 C (96.1 F)200432.8 C (91.0 F)76
Coldest night (TNn)17.8 C (64.0 F)199921.7 C (71.1 F)76
Wettest day (Rx1day)501.4 mm (19.7 in)2002129.8 mm (5.1 in)76
Wettest five days (Rx5day)797.9 mm (31.4 in)2002236.5 mm (9.3 in)76
Longest dry spell (CDD)20 days19989 days76

Hottest day (TXx)

Hottest day (TXx) at Chuuk WSO AP by year The hottest day of the year at Chuuk WSO AP, 1951 to 2026. The record is 35.6 C (96.1 F) in 2004, marked on the chart; the median year is 32.8 C (91.0 F). 303234361960198020002020Record: 35.6 C (96.1 F) in 2004
The hottest day of the year at Chuuk WSO AP, 1951 to 2026. The record is 35.6 C (96.1 F) in 2004, marked on the chart; the median year is 32.8 C (91.0 F).
Hottest day (TXx) at Chuuk WSO AP by year
YearHottest day (TXx)
195131.7 C (89.1 F)
195232.8 C (91.0 F)
195331.7 C (89.1 F)
195431.1 C (88.0 F)
195531.1 C (88.0 F)
195631.7 C (89.1 F)
195733.9 C (93.0 F)
195833.3 C (91.9 F)
195933.3 C (91.9 F)
196033.3 C (91.9 F)
196132.2 C (90.0 F)
196231.7 C (89.1 F)
196332.2 C (90.0 F)
196432.2 C (90.0 F)
196531.7 C (89.1 F)
196632.8 C (91.0 F)
196732.8 C (91.0 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)
197232.8 C (91.0 F)
197332.8 C (91.0 F)
197432.2 C (90.0 F)
197531.7 C (89.1 F)
197632.2 C (90.0 F)
197732.8 C (91.0 F)
197832.8 C (91.0 F)
197933.3 C (91.9 F)
198032.8 C (91.0 F)
198133.9 C (93.0 F)
198233.3 C (91.9 F)
198333.3 C (91.9 F)
198433.3 C (91.9 F)
198532.8 C (91.0 F)
198632.8 C (91.0 F)
198732.8 C (91.0 F)
198832.8 C (91.0 F)
198932.8 C (91.0 F)
199032.8 C (91.0 F)
199132.8 C (91.0 F)
199232.8 C (91.0 F)
199332.8 C (91.0 F)
199432.8 C (91.0 F)
199533.3 C (91.9 F)
199632.8 C (91.0 F)
199733.3 C (91.9 F)
199833.9 C (93.0 F)
199932.8 C (91.0 F)
200033.9 C (93.0 F)
200132.8 C (91.0 F)
200232.2 C (90.0 F)
200332.2 C (90.0 F)
200435.6 C (96.1 F)
200532.2 C (90.0 F)
200633.9 C (93.0 F)
200732.8 C (91.0 F)
200832.2 C (90.0 F)
200932.8 C (91.0 F)
201035.6 C (96.1 F)
201133.9 C (93.0 F)
201234.4 C (93.9 F)
201333.9 C (93.0 F)
201433.3 C (91.9 F)
201533.9 C (93.0 F)
201633.6 C (92.5 F)
201733.9 C (93.0 F)
201833.1 C (91.6 F)
201933.3 C (91.9 F)
202033.3 C (91.9 F)
202133.2 C (91.8 F)
202233.3 C (91.9 F)
202334.0 C (93.2 F)
202433.4 C (92.1 F)
202532.8 C (91.0 F)
202634.4 C (93.9 F)

Coldest night (TNn)

Coldest night (TNn) at Chuuk WSO AP by year The coldest night of the year at Chuuk WSO AP, 1951 to 2026. The record is 17.8 C (64.0 F) in 1999, marked on the chart; the median year is 21.7 C (71.1 F). 16182022241960198020002020Record: 17.8 C (64.0 F) in 1999
The coldest night of the year at Chuuk WSO AP, 1951 to 2026. The record is 17.8 C (64.0 F) in 1999, marked on the chart; the median year is 21.7 C (71.1 F).
Coldest night (TNn) at Chuuk WSO AP by year
YearColdest night (TNn)
195121.7 C (71.1 F)
195221.1 C (70.0 F)
195321.1 C (70.0 F)
195421.7 C (71.1 F)
195522.2 C (72.0 F)
195622.2 C (72.0 F)
195722.2 C (72.0 F)
195822.2 C (72.0 F)
195922.2 C (72.0 F)
196021.7 C (71.1 F)
196121.7 C (71.1 F)
196221.1 C (70.0 F)
196321.1 C (70.0 F)
196422.2 C (72.0 F)
196521.1 C (70.0 F)
196621.7 C (71.1 F)
196721.7 C (71.1 F)
196821.1 C (70.0 F)
196922.2 C (72.0 F)
197022.8 C (73.0 F)
197122.2 C (72.0 F)
197221.7 C (71.1 F)
197320.0 C (68.0 F)
197421.1 C (70.0 F)
197522.2 C (72.0 F)
197621.7 C (71.1 F)
197721.7 C (71.1 F)
197822.2 C (72.0 F)
197921.1 C (70.0 F)
198018.9 C (66.0 F)
198121.1 C (70.0 F)
198222.2 C (72.0 F)
198322.2 C (72.0 F)
198421.7 C (71.1 F)
198521.1 C (70.0 F)
198621.1 C (70.0 F)
198722.8 C (73.0 F)
198821.7 C (71.1 F)
198922.2 C (72.0 F)
199020.6 C (69.1 F)
199121.1 C (70.0 F)
199221.7 C (71.1 F)
199322.2 C (72.0 F)
199421.1 C (70.0 F)
199522.2 C (72.0 F)
199620.6 C (69.1 F)
199719.4 C (66.9 F)
199818.9 C (66.0 F)
199917.8 C (64.0 F)
200021.1 C (70.0 F)
200121.1 C (70.0 F)
200220.0 C (68.0 F)
200321.1 C (70.0 F)
200422.2 C (72.0 F)
200522.2 C (72.0 F)
200622.8 C (73.0 F)
200722.2 C (72.0 F)
200821.7 C (71.1 F)
200922.2 C (72.0 F)
201022.2 C (72.0 F)
201122.8 C (73.0 F)
201222.8 C (73.0 F)
201322.2 C (72.0 F)
201422.8 C (73.0 F)
201522.2 C (72.0 F)
201622.8 C (73.0 F)
201721.4 C (70.5 F)
201822.8 C (73.0 F)
201923.3 C (73.9 F)
202023.1 C (73.6 F)
202122.8 C (73.0 F)
202222.5 C (72.5 F)
202323.1 C (73.6 F)
202423.2 C (73.8 F)
202521.7 C (71.1 F)
202622.2 C (72.0 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Chuuk WSO AP by year The wettest day of the year at Chuuk WSO AP, 1951 to 2026. The record is 501.4 mm (19.7 in) in 2002, marked on the chart; the median year is 129.8 mm (5.1 in). 02004006001960198020002020Record: 501.4 mm (19.7 in) in 2002
The wettest day of the year at Chuuk WSO AP, 1951 to 2026. The record is 501.4 mm (19.7 in) in 2002, marked on the chart; the median year is 129.8 mm (5.1 in).
Wettest day (Rx1day) at Chuuk WSO AP by year
YearWettest day (Rx1day)
1951126.5 mm (5.0 in)
1952109.2 mm (4.3 in)
195388.9 mm (3.5 in)
1954264.7 mm (10.4 in)
1955110.5 mm (4.4 in)
1956128.8 mm (5.1 in)
195791.2 mm (3.6 in)
1958139.7 mm (5.5 in)
1959378.5 mm (14.9 in)
1960112.5 mm (4.4 in)
1961126.5 mm (5.0 in)
1962226.6 mm (8.9 in)
1963117.6 mm (4.6 in)
1964113.5 mm (4.5 in)
1965141.0 mm (5.6 in)
1966143.5 mm (5.6 in)
1967200.2 mm (7.9 in)
1968122.7 mm (4.8 in)
1969117.9 mm (4.6 in)
1970156.7 mm (6.2 in)
1971142.2 mm (5.6 in)
1972208.5 mm (8.2 in)
197397.5 mm (3.8 in)
1974106.2 mm (4.2 in)
1975105.9 mm (4.2 in)
1976221.0 mm (8.7 in)
197798.0 mm (3.9 in)
1978155.4 mm (6.1 in)
1979131.1 mm (5.2 in)
1980119.9 mm (4.7 in)
1981169.9 mm (6.7 in)
198280.0 mm (3.1 in)
1983139.4 mm (5.5 in)
1984103.4 mm (4.1 in)
1985170.2 mm (6.7 in)
1986130.0 mm (5.1 in)
1987124.2 mm (4.9 in)
1988121.9 mm (4.8 in)
1989174.5 mm (6.9 in)
1990152.4 mm (6.0 in)
1991122.4 mm (4.8 in)
1992107.7 mm (4.2 in)
1993149.1 mm (5.9 in)
1994141.7 mm (5.6 in)
1995148.6 mm (5.9 in)
1996122.4 mm (4.8 in)
1997104.6 mm (4.1 in)
199870.1 mm (2.8 in)
199988.1 mm (3.5 in)
200098.6 mm (3.9 in)
2001114.3 mm (4.5 in)
2002501.4 mm (19.7 in)
2003146.3 mm (5.8 in)
2004156.0 mm (6.1 in)
2005138.7 mm (5.5 in)
2006123.4 mm (4.9 in)
2007105.9 mm (4.2 in)
2008100.8 mm (4.0 in)
2009143.5 mm (5.6 in)
2010142.2 mm (5.6 in)
2011129.5 mm (5.1 in)
2012152.1 mm (6.0 in)
2013152.9 mm (6.0 in)
2014151.4 mm (6.0 in)
2015207.0 mm (8.1 in)
2016105.2 mm (4.1 in)
2017118.9 mm (4.7 in)
201897.5 mm (3.8 in)
2019144.3 mm (5.7 in)
2020140.7 mm (5.5 in)
2021145.0 mm (5.7 in)
2022109.7 mm (4.3 in)
2023148.8 mm (5.9 in)
2024160.0 mm (6.3 in)
2025100.1 mm (3.9 in)
2026135.9 mm (5.4 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Chuuk WSO AP by year The wettest five days of the year at Chuuk WSO AP, 1951 to 2026. The record is 797.9 mm (31.4 in) in 2002, marked on the chart; the median year is 236.5 mm (9.3 in). 02004006008001960198020002020Record: 797.9 mm (31.4 in) in 2002
The wettest five days of the year at Chuuk WSO AP, 1951 to 2026. The record is 797.9 mm (31.4 in) in 2002, marked on the chart; the median year is 236.5 mm (9.3 in).
Wettest five days (Rx5day) at Chuuk WSO AP by year
YearWettest five days (Rx5day)
1951253.0 mm (10.0 in)
1952156.4 mm (6.2 in)
1953191.2 mm (7.5 in)
1954318.1 mm (12.5 in)
1955229.0 mm (9.0 in)
1956235.4 mm (9.3 in)
1957178.6 mm (7.0 in)
1958224.5 mm (8.8 in)
1959386.2 mm (15.2 in)
1960392.0 mm (15.4 in)
1961230.2 mm (9.1 in)
1962391.0 mm (15.4 in)
1963236.6 mm (9.3 in)
1964220.0 mm (8.7 in)
1965271.6 mm (10.7 in)
1966300.2 mm (11.8 in)
1967315.2 mm (12.4 in)
1968381.9 mm (15.0 in)
1969193.4 mm (7.6 in)
1970242.1 mm (9.5 in)
1971199.1 mm (7.8 in)
1972272.3 mm (10.7 in)
1973171.7 mm (6.8 in)
1974232.2 mm (9.1 in)
1975208.0 mm (8.2 in)
1976439.2 mm (17.3 in)
1977193.0 mm (7.6 in)
1978227.8 mm (9.0 in)
1979345.0 mm (13.6 in)
1980237.2 mm (9.3 in)
1981303.8 mm (12.0 in)
1982171.5 mm (6.8 in)
1983223.7 mm (8.8 in)
1984216.9 mm (8.5 in)
1985268.1 mm (10.6 in)
1986253.0 mm (10.0 in)
1987210.2 mm (8.3 in)
1988190.8 mm (7.5 in)
1989413.2 mm (16.3 in)
1990246.4 mm (9.7 in)
1991230.9 mm (9.1 in)
1992249.4 mm (9.8 in)
1993275.1 mm (10.8 in)
1994197.6 mm (7.8 in)
1995268.9 mm (10.6 in)
1996447.0 mm (17.6 in)
1997175.2 mm (6.9 in)
1998184.4 mm (7.3 in)
1999170.2 mm (6.7 in)
2000159.2 mm (6.3 in)
2001209.0 mm (8.2 in)
2002797.9 mm (31.4 in)
2003202.4 mm (8.0 in)
2004427.5 mm (16.8 in)
2005314.5 mm (12.4 in)
2006300.1 mm (11.8 in)
2007167.9 mm (6.6 in)
2008168.1 mm (6.6 in)
2009328.9 mm (12.9 in)
2010236.4 mm (9.3 in)
2011211.1 mm (8.3 in)
2012278.9 mm (11.0 in)
2013217.7 mm (8.6 in)
2014398.2 mm (15.7 in)
2015285.2 mm (11.2 in)
2016174.3 mm (6.9 in)
2017163.1 mm (6.4 in)
2018240.3 mm (9.5 in)
2019392.2 mm (15.4 in)
2020210.0 mm (8.3 in)
2021256.6 mm (10.1 in)
2022240.6 mm (9.5 in)
2023361.6 mm (14.2 in)
2024210.5 mm (8.3 in)
2025188.3 mm (7.4 in)
2026257.1 mm (10.1 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Chuuk WSO AP by year The longest dry spell of the year at Chuuk WSO AP, 1951 to 2026. The record is 20 days in 1998, marked on the chart; the median year is 9 days. 51015201960198020002020Record: 20 days in 1998
The longest dry spell of the year at Chuuk WSO AP, 1951 to 2026. The record is 20 days in 1998, marked on the chart; the median year is 9 days.
Longest dry spell (CDD) at Chuuk WSO AP by year
YearLongest dry spell (CDD)
19517 days
195211 days
19538 days
195411 days
19558 days
19567 days
19578 days
195810 days
195910 days
19608 days
19618 days
19626 days
196311 days
196418 days
19657 days
19668 days
19678 days
196813 days
196914 days
19706 days
197111 days
19726 days
197314 days
197416 days
197510 days
19767 days
19779 days
19789 days
197911 days
198010 days
19819 days
198211 days
198311 days
198410 days
19857 days
19868 days
198719 days
198811 days
19896 days
199013 days
19918 days
199213 days
19937 days
199412 days
199510 days
19966 days
199711 days
199820 days
19997 days
20005 days
20015 days
20026 days
20038 days
200411 days
20057 days
20068 days
20076 days
20086 days
200915 days
201012 days
20119 days
20128 days
20139 days
20149 days
20157 days
201613 days
20175 days
20189 days
201912 days
20209 days
202111 days
20227 days
20238 days
202414 days
20257 days
20267 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

74 years, 1952 to 2025

A day with at least 126.7 mm (5.0 in) of rain is expected about once in 2 years. A day with at least 372.5 mm (14.7 in) of rain is expected about once in 100 years.

Rainfall return levels at Chuuk WSO AP: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years126.7 mm (5.0 in)
5 years166.0 mm (6.5 in)
10 years200.3 mm (7.9 in)
25 years255.9 mm (10.1 in)
50 years308.4 mm (12.1 in)
100 years372.5 mm (14.7 in)Longer than the 74 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, 74 years of values from 1952 to 2025.

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: 501.4 mm (19.7 in) in 2002; 378.5 mm (14.9 in) in 1959; 264.7 mm (10.4 in) in 1954.

Climate Twins

2010 to 2025 against 1961 to 1990

Over 2010 to 2025, Chuuk WSO AP had a mean temperature of 28.2 C (82.8 F) and 3,742.1 mm (147.3 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Koror (Palau, 1,916 km away), Cubi Point Nf (Philippines, 3,537 km away) and Kuching (Malaysia, 4,647 km away).

Climate twins of Chuuk WSO AP: stations whose 1961 to 1990 climate is closest to its 2010 to 2025 climate
Twin stationCountryDistance awayMean temperature, 1961-1990Rain a year, 1961-1990Climate difference
KororPalau1,916 km (1,191 mi)27.6 C (81.7 F)3,759.7 mm (148.0 in)0.64
Cubi Point NfPhilippines3,537 km (2,198 mi)28.1 C (82.5 F)3,603.7 mm (141.9 in)1.03
KuchingMalaysia4,647 km (2,888 mi)27.2 C (81.0 F)3,868.3 mm (152.3 in)1.22

Twins are stations, not cities. A twin is one of the three stations at least 100 km away whose earlier climate is closest to this station's recent one, so a close match does not mean the two places look alike in other ways. A station move or a gap in a record can change that station's averages. The list describes past climate; it is not a forecast and does not say what caused any change. How twins are found, and a search for any station.

Download the Data

  • Data for Chuuk WSO AP standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Chuuk WSO AP 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 2026-10-15 (15 October 2026). Records are computed by this site and are not official.

Data as of . Last revised (2026-10-15).