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Kosrae Weather Records (FMC00914395)

Record envelope, standing records and threshold days for Kosrae (FMC00914395), FM, Federated States of Micronesia, with 73 years of record.

Key Facts for Kosrae

  • Kosrae (FMC00914395) is a weather station in FM, Federated States of Micronesia at 5.35 latitude and 162.95 longitude, 2 m (7 ft) above sea level.
  • The station reports from 1954 to 2026, 73 years of record.
  • 1,464 records set at Kosrae still stand.
  • Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
  • Kosrae tied a daily record high minimum temperature of 25.0 C (77.0 F) on 6 September 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, 5.35 latitude, 162.95 longitude.
  • Elevation: 2 m (7 ft).
  • Period of record: 1954 to 2026, 73 years.
  • Eligible elements: tmax, tmin, prcp, snow, snwd.

Daily Record Envelope and 2026

26 days at or beyond a record
Daily record high and record low at Kosrae, with 2026 drawn through them The band shows the record high and record low for each calendar day at Kosrae. The lines show the 2026 daily maximum and minimum. 26 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. 10152025303540 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Kosrae. The lines show the 2026 daily maximum and minimum. 26 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Kosrae, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan36.7 C (98.1 F)18.3 C (64.9 F)33.3 C (91.9 F)20.6 C (69.1 F)
Feb35.6 C (96.1 F)18.3 C (64.9 F)33.3 C (91.9 F)21.1 C (70.0 F)
Mar35.6 C (96.1 F)16.1 C (61.0 F)33.3 C (91.9 F)20.0 C (68.0 F)
Apr36.7 C (98.1 F)17.8 C (64.0 F)33.3 C (91.9 F)19.4 C (66.9 F)
May35.0 C (95.0 F)17.2 C (63.0 F)32.8 C (91.0 F)18.3 C (64.9 F)
Jun35.6 C (96.1 F)16.7 C (62.1 F)33.9 C (93.0 F)20.0 C (68.0 F)
Jul35.0 C (95.0 F)16.7 C (62.1 F)33.3 C (91.9 F)20.0 C (68.0 F)
Aug36.1 C (97.0 F)15.6 C (60.1 F)32.8 C (91.0 F)19.4 C (66.9 F)
Sep36.1 C (97.0 F)17.2 C (63.0 F)32.8 C (91.0 F)20.0 C (68.0 F)
Oct35.0 C (95.0 F)14.4 C (57.9 F)32.2 C (90.0 F)21.1 C (70.0 F)
Nov35.6 C (96.1 F)14.4 C (57.9 F)n/an/a
Dec36.7 C (98.1 F)15.0 C (59.0 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Kosrae by the year they were set 1,464 records at Kosrae still stand. 2004 holds the most, with 104. 0501001501954: 421955: 321956: 331957: 541958: 441959: 271960: 151961: 201962: 301963: 251964: 161965: 111966: 621967: 221968: 531969: 321970: 661971: 1021972: 121973: 91974: 61975: 71976: 21977: 171978: 21988: 41989: 51990: 161991: 481992: 441993: 431994: 141995: 191996: 71997: 251998: 181999: 192000: 72001: 72002: 212003: 502004: 1042005: 82006: 92007: 42008: 92009: 412010: 372011: 52012: 52014: 22015: 292016: 232017: 112018: 82019: 32020: 32022: 142023: 162024: 222025: 92026: 14195419611968197519911998200520122020
1,464 records at Kosrae still stand. 2004 holds the most, with 104.
Standing records at Kosrae by the year they were set
Year setStanding records
195442
195532
195633
195754
195844
195927
196015
196120
196230
196325
196416
196511
196662
196722
196853
196932
197066
1971102
197212
19739
19746
19757
19762
197717
19782
19884
19895
199016
199148
199244
199343
199414
199519
19967
199725
199818
199919
20007
20017
200221
200350
2004104
20058
20069
20074
20089
200941
201037
20115
20125
20142
201529
201623
201711
20188
20193
20203
202214
202316
202422
20259
202614

All-Time Record Progression

1 new records
When Kosrae set new all-time records 1 all-time records were set at Kosrae between 15 December 2001 and 15 December 2001. Each dot is a new record. Record daily precipitation15 December 2001: Record daily precipitation 302.8 mm (11.9 in)
1 all-time records were set at Kosrae between 15 December 2001 and 15 December 2001. Each dot is a new record.
When Kosrae set new all-time records
DateKindDetail
2001-12-15Record daily precipitationRecord daily precipitation 302.8 mm (11.9 in)

Wettest Day of Each Month

Dec: 302.8 mm (11.9 in)
Record daily precipitation for each month at Kosrae The wettest day on record for each calendar month at Kosrae. The most was 302.8 mm (11.9 in) on 15 December 2001. 0100200300400 Jan: 181.1 mm (7.1 in), 7 January 2003 Jan Feb: 279.9 mm (11.0 in), 26 February 1958 Feb Mar: 243.3 mm (9.6 in), 16 March 1955 Mar Apr: 162.8 mm (6.4 in), 18 April 1977 Apr May: 192.8 mm (7.6 in), 5 May 1958 May Jun: 169.7 mm (6.7 in), 18 June 2021 Jun Jul: 242.1 mm (9.5 in), 15 July 2006 Jul Aug: 197.6 mm (7.8 in), 3 August 2015 Aug Sep: 158.8 mm (6.3 in), 10 September 1997 Sep Oct: 158.5 mm (6.2 in), 7 October 2006 Oct Nov: 252.5 mm (9.9 in), 10 November 1957 Nov Dec: 302.8 mm (11.9 in), 15 December 2001 Dec
The wettest day on record for each calendar month at Kosrae. The most was 302.8 mm (11.9 in) on 15 December 2001.
Record daily precipitation for each month at Kosrae
MonthRecord daily precipitation (mm)Date
Jan181.1 mm (7.1 in)7 January 2003
Feb279.9 mm (11.0 in)26 February 1958
Mar243.3 mm (9.6 in)16 March 1955
Apr162.8 mm (6.4 in)18 April 1977
May192.8 mm (7.6 in)5 May 1958
Jun169.7 mm (6.7 in)18 June 2021
Jul242.1 mm (9.5 in)15 July 2006
Aug197.6 mm (7.8 in)3 August 2015
Sep158.8 mm (6.3 in)10 September 1997
Oct158.5 mm (6.2 in)7 October 2006
Nov252.5 mm (9.9 in)10 November 1957
Dec302.8 mm (11.9 in)15 December 2001

Period of Record Coverage

1954 to 2026
Days with data per year at Kosrae 64 years of record at Kosrae, 1954 to 2026. 23 years have data for under 90 percent of days and are left out of rankings: 1954, 1955, 1957, 1961, 1965, 1971, 1972, 1973 and others. 1954: 223 of 365 days1955: 268 of 365 days1956: 349 of 366 days1957: 302 of 365 days1958: 349 of 365 days1959: 363 of 365 days1960: 344 of 366 days1961: 297 of 365 days1962: 331 of 365 days1963: 352 of 365 days1964: 353 of 366 days1965: 209 of 365 days1966: 365 of 365 days1967: 364 of 365 days1968: 363 of 366 days1969: 357 of 365 days1970: 357 of 365 days1971: 315 of 365 days1972: 234 of 366 days1973: 237 of 365 days1974: 298 of 365 days1975: 223 of 365 days1976: 167 of 366 days1977: 237 of 365 days1978: 89 of 365 days1979: 28 of 365 days1988: 78 of 366 days1989: 278 of 365 days1990: 228 of 365 days1991: 350 of 365 days1992: 355 of 366 days1993: 323 of 365 days1994: 337 of 365 days1995: 358 of 365 days1996: 366 of 366 days1997: 334 of 365 days1998: 361 of 365 days1999: 365 of 365 days2000: 336 of 366 days2001: 365 of 365 days2002: 365 of 365 days2003: 365 of 365 days2004: 366 of 366 days2005: 365 of 365 days2006: 334 of 365 days2007: 365 of 365 days2008: 366 of 366 days2009: 365 of 365 days2010: 304 of 365 days2011: 210 of 365 days2012: 182 of 366 days2014: 151 of 365 days2015: 365 of 365 days2016: 366 of 366 days2017: 363 of 365 days2018: 362 of 365 days2019: 364 of 365 days2020: 366 of 366 days2021: 365 of 365 days2022: 361 of 365 days2023: 364 of 365 days2024: 363 of 366 days2025: 364 of 365 days2026: 269 of 365 days196019701990200020102020
64 years of record at Kosrae, 1954 to 2026. 23 years have data for under 90 percent of days and are left out of rankings: 1954, 1955, 1957, 1961, 1965, 1971, 1972, 1973 and others.
Days with data per year at Kosrae
YearDays with dataShare of yearComplete
195422361%No
195526873%No
195634995%Yes
195730283%No
195834996%Yes
195936399%Yes
196034494%Yes
196129781%No
196233191%Yes
196335296%Yes
196435396%Yes
196520957%No
1966365100%Yes
1967364100%Yes
196836399%Yes
196935798%Yes
197035798%Yes
197131586%No
197223464%No
197323765%No
197429882%No
197522361%No
197616746%No
197723765%No
19788924%No
1979288%No
19887821%No
198927876%No
199022862%No
199135096%Yes
199235597%Yes
199332388%No
199433792%Yes
199535898%Yes
1996366100%Yes
199733492%Yes
199836199%Yes
1999365100%Yes
200033692%Yes
2001365100%Yes
2002365100%Yes
2003365100%Yes
2004366100%Yes
2005365100%Yes
200633492%Yes
2007365100%Yes
2008366100%Yes
2009365100%Yes
201030483%No
201121058%No
201218250%No
201415141%No
2015365100%Yes
2016366100%Yes
201736399%Yes
201836299%Yes
2019364100%Yes
2020366100%Yes
2021365100%Yes
202236199%Yes
2023364100%Yes
202436399%Yes
2025364100%Yes
202626974%No

Latest Records

20
Latest records at Kosrae
DateStationRecordValueBeat old record byOld record stoodSignificance
6 September 2026Kosrae, FMdaily high min (Tie, Provisional)25.0 C (77.0 F)tie68 years6 of 100 (Routine)
30 August 2026Kosrae, FMdaily high min (Tie, Provisional)26.1 C (79.0 F)tie8 years2 of 100 (Routine)
24 August 2026Kosrae, FMdaily rain (Provisional)81.3 mm (3.2 in)16.5 mm (0.6 in)67 years34 of 100 (Routine)
16 August 2026Kosrae, FMdaily rain (Provisional)96.0 mm (3.8 in)0.5 mm (0.02 in)21 years13 of 100 (Routine)
15 August 2026Kosrae, FMdaily high min (Tie)26.1 C (79.0 F)tie68 years6 of 100 (Routine)
14 August 2026Kosrae, FMdaily rain156.5 mm (6.2 in)98.8 mm (3.9 in)4 years48 of 100 (Notable)
8 August 2026Kosrae, FMdaily high min26.7 C (80.1 F)0.6 C (1.1 F)68 years30 of 100 (Routine)
7 August 2026Kosrae, FMdaily high min26.7 C (80.1 F)1.1 C (2.0 F)56 years29 of 100 (Routine)
4 August 2026Kosrae, FMdaily high min (Tie)26.1 C (79.0 F)tie7 years2 of 100 (Routine)
3 August 2026Kosrae, FMmonthly high min (Tie)27.8 C (82.0 F)tie69 years9 of 100 (Routine)
1 August 2026Kosrae, FMdaily high min26.7 C (80.1 F)1.7 C (3.1 F)71 years38 of 100 (Notable)
27 July 2026Kosrae, FMdaily rain83.3 mm (3.3 in)31.2 mm (1.2 in)63 years39 of 100 (Notable)
26 July 2026Kosrae, FMdaily low max26.7 C (80.1 F)0.5 C (0.9 F)67 years30 of 100 (Routine)
12 July 2026Kosrae, FMdaily high max (Tie)32.8 C (91.0 F)tie56 years6 of 100 (Routine)
7 July 2026Kosrae, FMdaily high max33.3 C (91.9 F)0.5 C (0.9 F)24 years17 of 100 (Routine)
12 June 2026Kosrae, FMdaily high max33.9 C (93.0 F)0.6 C (1.1 F)60 years29 of 100 (Routine)
11 June 2026Kosrae, FMdaily high max (Tie)33.3 C (91.9 F)tie56 years6 of 100 (Routine)
9 June 2026Kosrae, FMdaily high min (Tie)26.1 C (79.0 F)tie25 years3 of 100 (Routine)
8 June 2026Kosrae, FMdaily high max (Tie)33.3 C (91.9 F)tie56 years6 of 100 (Routine)
6 June 2026Kosrae, FMdaily high max (Tie)33.3 C (91.9 F)tie53 years5 of 100 (Routine)

Climate Trend

34 complete years, 1956 to 2025
Annual mean temperature at Kosrae as warming stripes, 1956 to 2025 One stripe for each of 34 complete years at Kosrae, 1956 to 2025. Blue stripes are years cooler than the station's own mean of 27.2 C (80.9 F); red stripes are warmer. The coolest year was 2004, at 26.0 C (78.8 F), and the warmest was 1966, at 28.5 C (83.3 F). The strongest colour marks a difference of 1.4 C (2.5 F). 1956: 27.6 C, +0.4 C from the station mean1958: 27.2 C, 0.0 C from the station mean1959: 26.9 C, -0.2 C from the station mean1966: 28.5 C, +1.3 C from the station mean1967: 27.8 C, +0.7 C from the station mean1968: 28.3 C, +1.1 C from the station mean1969: 27.8 C, +0.6 C from the station mean1989: 26.8 C, -0.4 C from the station mean1991: 26.2 C, -0.9 C from the station mean1992: 26.3 C, -0.9 C from the station mean1994: 26.7 C, -0.5 C from the station mean1995: 26.3 C, -0.8 C from the station mean1996: 27.0 C, -0.1 C from the station mean1998: 27.2 C, 0.0 C from the station mean1999: 27.3 C, +0.2 C from the station mean2001: 27.6 C, +0.4 C from the station mean2002: 27.7 C, +0.5 C from the station mean2003: 26.3 C, -0.8 C from the station mean2004: 26.0 C, -1.2 C from the station mean2005: 27.3 C, +0.1 C from the station mean2007: 27.2 C, +0.1 C from the station mean2008: 27.0 C, -0.1 C from the station mean2009: 27.8 C, +0.7 C from the station mean2015: 27.6 C, +0.4 C from the station mean2016: 28.0 C, +0.8 C from the station mean2017: 28.0 C, +0.8 C from the station mean2018: 27.4 C, +0.2 C from the station mean2019: 26.8 C, -0.3 C from the station mean2020: 26.9 C, -0.2 C from the station mean2021: 26.9 C, -0.2 C from the station mean2022: 26.8 C, -0.4 C from the station mean2023: 26.9 C, -0.3 C from the station mean2024: 26.7 C, -0.5 C from the station mean2025: 26.8 C, -0.4 C from the station mean19561960197019801990200020102020
One stripe for each of 34 complete years at Kosrae, 1956 to 2025. Blue stripes are years cooler than the station's own mean of 27.2 C (80.9 F); red stripes are warmer. The coolest year was 2004, at 26.0 C (78.8 F), and the warmest was 1966, at 28.5 C (83.3 F). The strongest colour marks a difference of 1.4 C (2.5 F).
Annual mean temperature at Kosrae as warming stripes, 1956 to 2025
YearAnnual mean temperatureDifference from the station mean
195627.6 C+0.44 C
195827.2 C+0.03 C
195926.9 C-0.25 C
196628.5 C+1.31 C
196727.8 C+0.67 C
196828.3 C+1.08 C
196927.8 C+0.58 C
198926.8 C-0.40 C
199126.2 C-0.93 C
199226.3 C-0.89 C
199426.7 C-0.52 C
199526.3 C-0.85 C
199627.0 C-0.13 C
199827.2 C+0.03 C
199927.3 C+0.17 C
200127.6 C+0.40 C
200227.7 C+0.54 C
200326.3 C-0.85 C
200426.0 C-1.16 C
200527.3 C+0.09 C
200727.2 C+0.07 C
200827.0 C-0.14 C
200927.8 C+0.65 C
201527.6 C+0.42 C
201628.0 C+0.78 C
201728.0 C+0.84 C
201827.4 C+0.24 C
201926.8 C-0.33 C
202026.9 C-0.24 C
202126.9 C-0.24 C
202226.8 C-0.40 C
202326.9 C-0.29 C
202426.7 C-0.48 C
202526.8 C-0.39 C

The fitted trend in annual mean temperature here over 1956 to 2025 is -0.08 C (-0.18 to 0.02) per decade. The interval includes zero, so the trend is not clearly different from zero. In Fahrenheit: -0.14 F (-0.32 to 0.03) per decade. The slope is a straight line fitted to 34 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Kosrae
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature-0.08 C (-0.18 to 0.02) per decade-0.14 F (-0.32 to 0.03) per decade1956 to 202534Not clearly different from zero
Mean daily maximum0.02 C (-0.08 to 0.11) per decade0.03 F (-0.14 to 0.21) per decade1956 to 202534Not clearly different from zero
Mean daily minimum-0.18 C (-0.37 to 0.01) per decade-0.32 F (-0.67 to 0.02) per decade1956 to 202534Not clearly different from zero

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

1954 to 2026
Yearly extremes at Kosrae: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)36.7 C (98.1 F)195433.9 C (93.0 F)64
Coldest night (TNn)14.4 C (57.9 F)197120.3 C (68.5 F)64
Wettest day (Rx1day)302.8 mm (11.9 in)2001141.2 mm (5.6 in)67
Wettest five days (Rx5day)592.3 mm (23.3 in)2001268.5 mm (10.6 in)67
Longest dry spell (CDD)14 days20167 days67

Hottest day (TXx)

Hottest day (TXx) at Kosrae by year The hottest day of the year at Kosrae, 1954 to 2026. The record is 36.7 C (98.1 F) in 1954, marked on the chart; the median year is 33.9 C (93.0 F). 30323436381960198020002020Record: 36.7 C (98.1 F) in 1954
The hottest day of the year at Kosrae, 1954 to 2026. The record is 36.7 C (98.1 F) in 1954, marked on the chart; the median year is 33.9 C (93.0 F).
Hottest day (TXx) at Kosrae by year
YearHottest day (TXx)
195436.7 C (98.1 F)
195534.4 C (93.9 F)
195633.3 C (91.9 F)
195732.2 C (90.0 F)
195831.7 C (89.1 F)
195932.8 C (91.0 F)
196032.2 C (90.0 F)
196132.2 C (90.0 F)
196231.1 C (88.0 F)
196331.1 C (88.0 F)
196430.6 C (87.1 F)
196533.9 C (93.0 F)
196633.9 C (93.0 F)
196733.9 C (93.0 F)
196836.1 C (97.0 F)
196933.9 C (93.0 F)
197033.3 C (91.9 F)
197133.9 C (93.0 F)
197233.3 C (91.9 F)
197332.8 C (91.0 F)
197433.9 C (93.0 F)
197533.3 C (91.9 F)
197633.3 C (91.9 F)
197733.9 C (93.0 F)
197833.9 C (93.0 F)
197932.8 C (91.0 F)
1985n/a
1986n/a
1987n/a
198831.7 C (89.1 F)
198932.8 C (91.0 F)
199034.4 C (93.9 F)
199136.7 C (98.1 F)
199235.6 C (96.1 F)
199333.9 C (93.0 F)
199433.3 C (91.9 F)
199533.3 C (91.9 F)
199633.9 C (93.0 F)
199734.4 C (93.9 F)
199834.4 C (93.9 F)
199934.4 C (93.9 F)
200033.9 C (93.0 F)
200134.4 C (93.9 F)
200233.9 C (93.0 F)
200334.4 C (93.9 F)
200434.4 C (93.9 F)
200533.9 C (93.0 F)
200634.4 C (93.9 F)
200733.9 C (93.0 F)
200835.0 C (95.0 F)
200936.7 C (98.1 F)
201036.1 C (97.0 F)
201133.9 C (93.0 F)
201234.4 C (93.9 F)
201433.9 C (93.0 F)
201535.0 C (95.0 F)
201635.0 C (95.0 F)
201735.0 C (95.0 F)
201834.4 C (93.9 F)
201933.3 C (91.9 F)
202033.9 C (93.0 F)
202133.3 C (91.9 F)
202233.3 C (91.9 F)
202333.9 C (93.0 F)
202433.9 C (93.0 F)
202533.9 C (93.0 F)
202633.9 C (93.0 F)

Coldest night (TNn)

Coldest night (TNn) at Kosrae by year The coldest night of the year at Kosrae, 1954 to 2026. The record is 14.4 C (57.9 F) in 1971, marked on the chart; the median year is 20.3 C (68.5 F). 12.51517.52022.5251960198020002020Record: 14.4 C (57.9 F) in 1971
The coldest night of the year at Kosrae, 1954 to 2026. The record is 14.4 C (57.9 F) in 1971, marked on the chart; the median year is 20.3 C (68.5 F).
Coldest night (TNn) at Kosrae by year
YearColdest night (TNn)
195421.7 C (71.1 F)
195521.1 C (70.0 F)
195621.7 C (71.1 F)
195721.1 C (70.0 F)
195821.1 C (70.0 F)
195923.3 C (73.9 F)
196023.3 C (73.9 F)
196122.8 C (73.0 F)
196221.7 C (71.1 F)
196321.7 C (71.1 F)
196422.8 C (73.0 F)
196522.2 C (72.0 F)
196621.7 C (71.1 F)
196722.2 C (72.0 F)
196821.7 C (71.1 F)
196917.8 C (64.0 F)
197018.3 C (64.9 F)
197114.4 C (57.9 F)
197217.2 C (63.0 F)
197318.9 C (66.0 F)
197418.3 C (64.9 F)
197520.0 C (68.0 F)
197621.1 C (70.0 F)
197716.1 C (61.0 F)
197821.1 C (70.0 F)
197922.2 C (72.0 F)
1985n/a
1986n/a
1987n/a
198821.1 C (70.0 F)
198919.4 C (66.9 F)
199017.8 C (64.0 F)
199116.1 C (61.0 F)
199217.2 C (63.0 F)
199317.2 C (63.0 F)
199418.9 C (66.0 F)
199516.7 C (62.1 F)
199618.3 C (64.9 F)
199718.3 C (64.9 F)
199818.3 C (64.9 F)
199918.3 C (64.9 F)
200021.1 C (70.0 F)
200121.1 C (70.0 F)
200218.3 C (64.9 F)
200315.6 C (60.1 F)
200415.0 C (59.0 F)
200514.4 C (57.9 F)
200618.3 C (64.9 F)
200716.1 C (61.0 F)
200820.0 C (68.0 F)
200920.6 C (69.1 F)
201020.6 C (69.1 F)
201121.1 C (70.0 F)
201221.1 C (70.0 F)
201421.1 C (70.0 F)
201520.6 C (69.1 F)
201620.6 C (69.1 F)
201721.7 C (71.1 F)
201817.8 C (64.0 F)
201921.1 C (70.0 F)
202019.4 C (66.9 F)
202121.1 C (70.0 F)
202221.1 C (70.0 F)
202320.0 C (68.0 F)
202417.8 C (64.0 F)
202518.9 C (66.0 F)
202618.3 C (64.9 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Kosrae by year The wettest day of the year at Kosrae, 1954 to 2026. The record is 302.8 mm (11.9 in) in 2001, marked on the chart; the median year is 141.2 mm (5.6 in). 01002003004001960198020002020Record: 302.8 mm (11.9 in) in 2001
The wettest day of the year at Kosrae, 1954 to 2026. The record is 302.8 mm (11.9 in) in 2001, marked on the chart; the median year is 141.2 mm (5.6 in).
Wettest day (Rx1day) at Kosrae by year
YearWettest day (Rx1day)
195497.3 mm (3.8 in)
1955243.3 mm (9.6 in)
1956124.0 mm (4.9 in)
1957252.5 mm (9.9 in)
1958279.9 mm (11.0 in)
1959273.6 mm (10.8 in)
1960223.8 mm (8.8 in)
1961143.8 mm (5.7 in)
1962181.9 mm (7.2 in)
1963169.4 mm (6.7 in)
196483.1 mm (3.3 in)
1965156.2 mm (6.1 in)
1966105.2 mm (4.1 in)
1967222.0 mm (8.7 in)
1968109.5 mm (4.3 in)
1969141.7 mm (5.6 in)
1970114.8 mm (4.5 in)
1971154.2 mm (6.1 in)
1972135.4 mm (5.3 in)
1973116.3 mm (4.6 in)
1974155.4 mm (6.1 in)
1975137.7 mm (5.4 in)
1976164.1 mm (6.5 in)
1977162.8 mm (6.4 in)
197898.3 mm (3.9 in)
197984.8 mm (3.3 in)
198561.7 mm (2.4 in)
198692.5 mm (3.6 in)
1987107.2 mm (4.2 in)
198897.3 mm (3.8 in)
1989176.8 mm (7.0 in)
199088.9 mm (3.5 in)
1991137.4 mm (5.4 in)
1992154.9 mm (6.1 in)
1993196.3 mm (7.7 in)
1994106.9 mm (4.2 in)
1995112.3 mm (4.4 in)
1996158.0 mm (6.2 in)
1997158.8 mm (6.3 in)
1998109.0 mm (4.3 in)
1999111.3 mm (4.4 in)
2000122.7 mm (4.8 in)
2001302.8 mm (11.9 in)
2002168.1 mm (6.6 in)
2003181.1 mm (7.1 in)
200498.8 mm (3.9 in)
2005173.2 mm (6.8 in)
2006242.1 mm (9.5 in)
2007133.1 mm (5.2 in)
2008116.1 mm (4.6 in)
2009124.0 mm (4.9 in)
2010106.4 mm (4.2 in)
2011113.0 mm (4.4 in)
201297.3 mm (3.8 in)
2014155.2 mm (6.1 in)
2015197.6 mm (7.8 in)
2016147.8 mm (5.8 in)
2017212.3 mm (8.4 in)
2018109.5 mm (4.3 in)
2019156.2 mm (6.1 in)
2020138.7 mm (5.5 in)
2021169.7 mm (6.7 in)
2022141.2 mm (5.6 in)
2023125.7 mm (4.9 in)
2024121.9 mm (4.8 in)
2025195.3 mm (7.7 in)
2026156.5 mm (6.2 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Kosrae by year The wettest five days of the year at Kosrae, 1954 to 2026. The record is 592.3 mm (23.3 in) in 2001, marked on the chart; the median year is 268.5 mm (10.6 in). 02004006001960198020002020Record: 592.3 mm (23.3 in) in 2001
The wettest five days of the year at Kosrae, 1954 to 2026. The record is 592.3 mm (23.3 in) in 2001, marked on the chart; the median year is 268.5 mm (10.6 in).
Wettest five days (Rx5day) at Kosrae by year
YearWettest five days (Rx5day)
1954178.0 mm (7.0 in)
1955310.4 mm (12.2 in)
1956232.6 mm (9.2 in)
1957423.8 mm (16.7 in)
1958482.8 mm (19.0 in)
1959398.5 mm (15.7 in)
1960425.4 mm (16.7 in)
1961255.4 mm (10.1 in)
1962389.2 mm (15.3 in)
1963473.4 mm (18.6 in)
1964188.2 mm (7.4 in)
1965278.6 mm (11.0 in)
1966224.3 mm (8.8 in)
1967290.0 mm (11.4 in)
1968216.5 mm (8.5 in)
1969273.0 mm (10.7 in)
1970204.1 mm (8.0 in)
1971250.4 mm (9.9 in)
1972198.9 mm (7.8 in)
1973207.7 mm (8.2 in)
1974273.5 mm (10.8 in)
1975228.2 mm (9.0 in)
1976235.4 mm (9.3 in)
1977231.1 mm (9.1 in)
1978219.0 mm (8.6 in)
1979123.7 mm (4.9 in)
1985165.9 mm (6.5 in)
1986194.4 mm (7.7 in)
1987275.3 mm (10.8 in)
1988151.8 mm (6.0 in)
1989268.5 mm (10.6 in)
199073.6 mm (2.9 in)
1991285.6 mm (11.2 in)
1992214.2 mm (8.4 in)
1993290.6 mm (11.4 in)
1994258.8 mm (10.2 in)
1995193.4 mm (7.6 in)
1996403.1 mm (15.9 in)
1997337.4 mm (13.3 in)
1998218.5 mm (8.6 in)
1999220.5 mm (8.7 in)
2000265.3 mm (10.4 in)
2001592.3 mm (23.3 in)
2002450.4 mm (17.7 in)
2003350.9 mm (13.8 in)
2004278.0 mm (10.9 in)
2005231.3 mm (9.1 in)
2006330.1 mm (13.0 in)
2007240.0 mm (9.4 in)
2008257.6 mm (10.1 in)
2009204.7 mm (8.1 in)
2010204.2 mm (8.0 in)
2011262.2 mm (10.3 in)
2012218.8 mm (8.6 in)
2014340.9 mm (13.4 in)
2015330.5 mm (13.0 in)
2016267.2 mm (10.5 in)
2017412.9 mm (16.3 in)
2018291.6 mm (11.5 in)
2019371.6 mm (14.6 in)
2020361.4 mm (14.2 in)
2021300.8 mm (11.8 in)
2022346.7 mm (13.6 in)
2023284.4 mm (11.2 in)
2024285.2 mm (11.2 in)
2025304.7 mm (12.0 in)
2026338.1 mm (13.3 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Kosrae by year The longest dry spell of the year at Kosrae, 1954 to 2026. The record is 14 days in 2016, marked on the chart; the median year is 7 days. 0510151960198020002020Record: 14 days in 2016
The longest dry spell of the year at Kosrae, 1954 to 2026. The record is 14 days in 2016, marked on the chart; the median year is 7 days.
Longest dry spell (CDD) at Kosrae by year
YearLongest dry spell (CDD)
19548 days
19555 days
19566 days
195710 days
19587 days
195910 days
19607 days
196110 days
19625 days
19636 days
196410 days
19658 days
19667 days
19679 days
19685 days
19698 days
19709 days
197112 days
19725 days
19739 days
19746 days
19753 days
19764 days
197711 days
19784 days
19793 days
19853 days
198610 days
198711 days
19887 days
19895 days
19909 days
19916 days
199210 days
19935 days
19946 days
19957 days
19963 days
19979 days
199810 days
19995 days
20003 days
20015 days
20025 days
20038 days
20049 days
20057 days
20066 days
20077 days
20083 days
20094 days
201010 days
20114 days
20126 days
20144 days
20157 days
201614 days
20173 days
20189 days
201912 days
20207 days
20214 days
20226 days
20236 days
20247 days
20254 days
20269 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

43 years, 1956 to 2025

A day with at least 146.6 mm (5.8 in) of rain is expected about once in 2 years. A day with at least 360.6 mm (14.2 in) of rain is expected about once in 100 years.

Rainfall return levels at Kosrae: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years146.6 mm (5.8 in)
5 years194.3 mm (7.6 in)
10 years229.5 mm (9.0 in)
25 years278.2 mm (11.0 in)
50 years317.9 mm (12.5 in)Longer than the 43 years of record
100 years360.6 mm (14.2 in)Longer than the 43 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, 43 years of values from 1956 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: 302.8 mm (11.9 in) in 2001; 279.9 mm (11.0 in) in 1958; 273.6 mm (10.8 in) in 1959.

Download the Data

  • Data for Kosrae standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for Kosrae 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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.

Data as of . Last revised (2026-10-14).