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Koror Weather Records (PSW00040309)

Record envelope, standing records and threshold days for Koror (PSW00040309), PW, Palau, with 76 years of record.

Key Facts for Koror

  • Koror (PSW00040309) is a weather station in PW, Palau at 7.34 latitude and 134.48 longitude, 27 m (90 ft) above sea level.
  • The station reports from 1951 to 2026, 76 years of record.
  • 1,464 records set at Koror still stand.
  • Records are tracked for tmax, tmin, prcp, snow, snwd: an element needs 30 years of data to be eligible.
  • Koror tied a daily record high maximum temperature of 32.8 C (91.0 F) on 28 September 2026 (provisional).

Provisional Records

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

About the Station

  • Location: PW, Palau, 7.34 latitude, 134.48 longitude.
  • Elevation: 27 m (90 ft).
  • Period of record: 1951 to 2026, 76 years.
  • Eligible elements: tmax, tmin, prcp, snow, snwd.

Daily Record Envelope and 2026

3 days at or beyond a record
Daily record high and record low at Koror, with 2026 drawn through them The band shows the record high and record low for each calendar day at Koror. The lines show the 2026 daily maximum and minimum. 3 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. 20253035 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Koror. The lines show the 2026 daily maximum and minimum. 3 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Koror, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan33.9 C (93.0 F)20.6 C (69.1 F)31.1 C (88.0 F)24.4 C (75.9 F)
Feb34.4 C (93.9 F)21.7 C (71.1 F)30.6 C (87.1 F)25.6 C (78.1 F)
Mar35.0 C (95.0 F)20.6 C (69.1 F)30.6 C (87.1 F)24.4 C (75.9 F)
Apr34.4 C (93.9 F)20.6 C (69.1 F)31.7 C (89.1 F)23.3 C (73.9 F)
May34.4 C (93.9 F)21.7 C (71.1 F)31.1 C (88.0 F)23.3 C (73.9 F)
Jun35.0 C (95.0 F)21.7 C (71.1 F)31.7 C (89.1 F)22.8 C (73.0 F)
Jul33.9 C (93.0 F)21.1 C (70.0 F)31.7 C (89.1 F)24.4 C (75.9 F)
Aug34.4 C (93.9 F)21.1 C (70.0 F)32.8 C (91.0 F)23.3 C (73.9 F)
Sep33.3 C (91.9 F)21.1 C (70.0 F)32.8 C (91.0 F)24.4 C (75.9 F)
Oct33.9 C (93.0 F)21.7 C (71.1 F)32.2 C (90.0 F)23.9 C (75.0 F)
Nov33.9 C (93.0 F)21.1 C (70.0 F)n/an/a
Dec34.4 C (93.9 F)21.7 C (71.1 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Koror by the year they were set 1,464 records at Koror still stand. 1998 holds the most, with 59. 02040601951: 141952: 481953: 211954: 311955: 401956: 221957: 241958: 221959: 181960: 201961: 281962: 261963: 211964: 291965: 291966: 161967: 191968: 161969: 161970: 111971: 161972: 151973: 131974: 231975: 111976: 211977: 101978: 191979: 181980: 111981: 111982: 131983: 71984: 121985: 191986: 151987: 111988: 191989: 141990: 121991: 81992: 161993: 91994: 111995: 131996: 221997: 181998: 591999: 352000: 322001: 302002: 302003: 332004: 462005: 282006: 132007: 292008: 82009: 122010: 142011: 62012: 152013: 192014: 202015: 232016: 272017: 192018: 292020: 152021: 212022: 12023: 122024: 232025: 62026: 11951195919671975198319911999200720152024
1,464 records at Koror still stand. 1998 holds the most, with 59.
Standing records at Koror by the year they were set
Year setStanding records
195114
195248
195321
195431
195540
195622
195724
195822
195918
196020
196128
196226
196321
196429
196529
196616
196719
196816
196916
197011
197116
197215
197313
197423
197511
197621
197710
197819
197918
198011
198111
198213
19837
198412
198519
198615
198711
198819
198914
199012
19918
199216
19939
199411
199513
199622
199718
199859
199935
200032
200130
200230
200333
200446
200528
200613
200729
20088
200912
201014
20116
201215
201319
201420
201523
201627
201719
201829
202015
202121
20221
202312
202423
20256
20261

All-Time Record Progression

7 new records
When Koror set new all-time records 7 all-time records were set at Koror between 10 March 1991 and 8 October 2021. Each dot is a new record. Record daily precipitationRecord high minimum temperatureRecord low maximum temperature10 March 1991: Record daily precipitation 350.0 mm (13.8 in)8 November 1996: Record high minimum temperature 27.8 C (82.0 F)1 October 2018: Record high minimum temperature 29.4 C (84.9 F)2 October 2018: Record high minimum temperature 30.0 C (86.0 F)3 October 2018: Record high minimum temperature 30.6 C (87.1 F)16 February 2021: Record low maximum temperature 24.4 C (75.9 F)8 October 2021: Record low maximum temperature 23.9 C (75.0 F)199520002005201020152020
7 all-time records were set at Koror between 10 March 1991 and 8 October 2021. Each dot is a new record.
When Koror set new all-time records
DateKindDetail
1991-03-10Record daily precipitationRecord daily precipitation 350.0 mm (13.8 in)
1996-11-08Record high minimum temperatureRecord high minimum temperature 27.8 C (82.0 F)
2018-10-01Record high minimum temperatureRecord high minimum temperature 29.4 C (84.9 F)
2018-10-02Record high minimum temperatureRecord high minimum temperature 30.0 C (86.0 F)
2018-10-03Record high minimum temperatureRecord high minimum temperature 30.6 C (87.1 F)
2021-02-16Record low maximum temperatureRecord low maximum temperature 24.4 C (75.9 F)
2021-10-08Record low maximum temperatureRecord low maximum temperature 23.9 C (75.0 F)

Wettest Day of Each Month

Mar: 350.0 mm (13.8 in)
Record daily precipitation for each month at Koror The wettest day on record for each calendar month at Koror. The most was 350.0 mm (13.8 in) on 10 March 1991. 0100200300400 Jan: 348.5 mm (13.7 in), 16 January 1974 Jan Feb: 202.9 mm (8.0 in), 15 February 2004 Feb Mar: 350.0 mm (13.8 in), 10 March 1991 Mar Apr: 305.8 mm (12.0 in), 7 April 1976 Apr May: 208.3 mm (8.2 in), 9 May 1958 May Jun: 203.5 mm (8.0 in), 23 June 1990 Jun Jul: 208.5 mm (8.2 in), 7 July 1962 Jul Aug: 193.0 mm (7.6 in), 2 August 1962 Aug Sep: 254.3 mm (10.0 in), 24 September 2011 Sep Oct: 207.3 mm (8.2 in), 30 October 2022 Oct Nov: 179.8 mm (7.1 in), 10 November 1990 Nov Dec: 191.8 mm (7.6 in), 5 December 2005 Dec
The wettest day on record for each calendar month at Koror. The most was 350.0 mm (13.8 in) on 10 March 1991.
Record daily precipitation for each month at Koror
MonthRecord daily precipitation (mm)Date
Jan348.5 mm (13.7 in)16 January 1974
Feb202.9 mm (8.0 in)15 February 2004
Mar350.0 mm (13.8 in)10 March 1991
Apr305.8 mm (12.0 in)7 April 1976
May208.3 mm (8.2 in)9 May 1958
Jun203.5 mm (8.0 in)23 June 1990
Jul208.5 mm (8.2 in)7 July 1962
Aug193.0 mm (7.6 in)2 August 1962
Sep254.3 mm (10.0 in)24 September 2011
Oct207.3 mm (8.2 in)30 October 2022
Nov179.8 mm (7.1 in)10 November 1990
Dec191.8 mm (7.6 in)5 December 2005

Period of Record Coverage

1951 to 2026
Days with data per year at Koror 76 years of record at Koror, 1951 to 2026. 8 years have data for under 90 percent of days and are left out of rankings: 1951, 2018, 2019, 2020, 2022, 2023, 2024, 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: 364 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: 314 of 365 days2019: 15 of 365 days2020: 274 of 366 days2021: 350 of 365 days2022: 292 of 365 days2023: 282 of 365 days2024: 327 of 366 days2025: 343 of 365 days2026: 275 of 365 days1960197019801990200020102020
76 years of record at Koror, 1951 to 2026. 8 years have data for under 90 percent of days and are left out of rankings: 1951, 2018, 2019, 2020, 2022, 2023, 2024, 2026.
Days with data per year at Koror
YearDays with dataShare of yearComplete
195118450%No
1952366100%Yes
1953365100%Yes
1954365100%Yes
1955365100%Yes
1956366100%Yes
1957364100%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
201831486%No
2019154%No
202027475%No
202135096%Yes
202229280%No
202328277%No
202432789%No
202534394%Yes
202627575%No

Latest Records

20
Latest records at Koror
DateStationRecordValueBeat old record byOld record stoodSignificance
28 September 2026Koror, PWdaily high max (Tie, Provisional)32.8 C (91.0 F)tie48 years5 of 100 (Routine)
24 September 2026Koror, PWdaily high min (Tie, Provisional)26.7 C (80.1 F)tie60 years6 of 100 (Routine)
17 September 2026Koror, PWdaily high min (Tie, Provisional)26.7 C (80.1 F)tie60 years6 of 100 (Routine)
9 September 2026Koror, PWdaily high max (Tie, Provisional)32.2 C (90.0 F)tie72 years7 of 100 (Routine)
8 September 2026Koror, PWdaily high max (Tie, Provisional)32.8 C (91.0 F)tie51 years5 of 100 (Routine)
29 June 2026Koror, PWdaily rain140.5 mm (5.5 in)45.2 mm (1.8 in)24 years34 of 100 (Routine)
26 May 2026Koror, PWdaily low max (Tie)28.3 C (82.9 F)tie4 years2 of 100 (Routine)
9 April 2026Koror, PWdaily high min (Tie)26.1 C (79.0 F)tie55 years5 of 100 (Routine)
30 March 2026Koror, PWdaily low max (Tie)28.9 C (84.0 F)tie68 years6 of 100 (Routine)
28 March 2026Koror, PWdaily high min (Tie)26.1 C (79.0 F)tie20 years3 of 100 (Routine)
25 March 2026Koror, PWdaily high min (Tie)26.1 C (79.0 F)tie48 years5 of 100 (Routine)
13 March 2026Koror, PWdaily high min (Tie)25.6 C (78.1 F)tie13 years2 of 100 (Routine)
12 March 2026Koror, PWdaily rain64.0 mm (2.5 in)1.5 mm (0.06 in)16 years12 of 100 (Routine)
12 March 2026Koror, PWdaily high min (Tie)26.1 C (79.0 F)tie17 years3 of 100 (Routine)
11 March 2026Koror, PWdaily high min (Tie)26.1 C (79.0 F)tie9 years2 of 100 (Routine)
9 March 2026Koror, PWdaily high min (Tie)26.1 C (79.0 F)tie13 years2 of 100 (Routine)
7 March 2026Koror, PWdaily high min (Tie)26.1 C (79.0 F)tie16 years3 of 100 (Routine)
3 March 2026Koror, PWdaily high min (Tie)26.1 C (79.0 F)tie21 years3 of 100 (Routine)
1 March 2026Koror, PWdaily high min (Tie)26.1 C (79.0 F)tie16 years3 of 100 (Routine)
28 February 2026Koror, PWdaily high min (Tie)26.1 C (79.0 F)tie22 years3 of 100 (Routine)

Climate Trend

69 complete years, 1952 to 2025
Annual mean temperature at Koror as warming stripes, 1952 to 2025 One stripe for each of 69 complete years at Koror, 1952 to 2025. Blue stripes are years cooler than the station's own mean of 27.7 C (81.9 F); red stripes are warmer. The coolest year was 2021, at 26.7 C (80.1 F), and the warmest was 2004, at 28.4 C (83.2 F). The strongest colour marks a difference of 1.1 C (2.0 F). 1952: 27.4 C, -0.3 C from the station mean1953: 27.6 C, -0.2 C from the station mean1954: 27.4 C, -0.3 C from the station mean1955: 27.3 C, -0.5 C from the station mean1956: 27.2 C, -0.5 C from the station mean1957: 27.6 C, -0.2 C from the station mean1958: 27.7 C, 0.0 C from the station mean1959: 27.3 C, -0.4 C from the station mean1960: 27.6 C, -0.1 C from the station mean1961: 27.3 C, -0.4 C from the station mean1962: 27.4 C, -0.3 C from the station mean1963: 27.5 C, -0.2 C from the station mean1964: 27.4 C, -0.4 C from the station mean1965: 27.1 C, -0.6 C from the station mean1966: 27.5 C, -0.3 C from the station mean1967: 27.5 C, -0.2 C from the station mean1968: 27.7 C, 0.0 C from the station mean1969: 27.6 C, -0.1 C from the station mean1970: 27.8 C, +0.1 C from the station mean1971: 27.6 C, -0.1 C from the station mean1972: 27.6 C, -0.1 C from the station mean1973: 27.8 C, +0.1 C from the station mean1974: 27.6 C, -0.1 C from the station mean1975: 27.5 C, -0.2 C from the station mean1976: 27.7 C, -0.1 C from the station mean1977: 27.8 C, +0.1 C from the station mean1978: 27.5 C, -0.2 C from the station mean1979: 27.5 C, -0.2 C from the station mean1980: 27.6 C, -0.2 C from the station mean1981: 27.5 C, -0.2 C from the station mean1982: 27.6 C, -0.1 C from the station mean1983: 27.7 C, 0.0 C from the station mean1984: 27.6 C, -0.1 C from the station mean1985: 27.4 C, -0.3 C from the station mean1986: 27.8 C, +0.1 C from the station mean1987: 27.9 C, +0.1 C from the station mean1988: 27.9 C, +0.2 C from the station mean1989: 27.9 C, +0.2 C from the station mean1990: 27.9 C, +0.2 C from the station mean1991: 27.6 C, -0.1 C from the station mean1992: 27.5 C, -0.2 C from the station mean1993: 27.6 C, -0.2 C from the station mean1994: 27.7 C, 0.0 C from the station mean1995: 27.8 C, 0.0 C from the station mean1996: 27.8 C, +0.1 C from the station mean1997: 27.8 C, +0.1 C from the station mean1998: 28.1 C, +0.4 C from the station mean1999: 27.8 C, +0.1 C from the station mean2000: 27.8 C, +0.1 C from the station mean2001: 28.2 C, +0.5 C from the station mean2002: 28.4 C, +0.7 C from the station mean2003: 28.1 C, +0.4 C from the station mean2004: 28.4 C, +0.7 C from the station mean2005: 28.1 C, +0.4 C from the station mean2006: 28.3 C, +0.5 C from the station mean2007: 28.3 C, +0.6 C from the station mean2008: 27.7 C, 0.0 C from the station mean2009: 27.7 C, 0.0 C from the station mean2010: 27.7 C, 0.0 C from the station mean2011: 27.7 C, -0.1 C from the station mean2012: 27.9 C, +0.1 C from the station mean2013: 28.0 C, +0.3 C from the station mean2014: 28.0 C, +0.3 C from the station mean2015: 28.3 C, +0.6 C from the station mean2016: 28.4 C, +0.6 C from the station mean2017: 28.2 C, +0.5 C from the station mean2021: 26.7 C, -1.0 C from the station mean2024: 28.0 C, +0.3 C from the station mean2025: 27.7 C, 0.0 C from the station mean19521960197019801990200020102020
One stripe for each of 69 complete years at Koror, 1952 to 2025. Blue stripes are years cooler than the station's own mean of 27.7 C (81.9 F); red stripes are warmer. The coolest year was 2021, at 26.7 C (80.1 F), and the warmest was 2004, at 28.4 C (83.2 F). The strongest colour marks a difference of 1.1 C (2.0 F).
Annual mean temperature at Koror as warming stripes, 1952 to 2025
YearAnnual mean temperatureDifference from the station mean
195227.4 C-0.35 C
195327.6 C-0.16 C
195427.4 C-0.29 C
195527.3 C-0.47 C
195627.2 C-0.52 C
195727.6 C-0.17 C
195827.7 C+0.01 C
195927.3 C-0.38 C
196027.6 C-0.15 C
196127.3 C-0.45 C
196227.4 C-0.33 C
196327.5 C-0.22 C
196427.4 C-0.36 C
196527.1 C-0.59 C
196627.5 C-0.27 C
196727.5 C-0.21 C
196827.7 C-0.02 C
196927.6 C-0.09 C
197027.8 C+0.11 C
197127.6 C-0.14 C
197227.6 C-0.11 C
197327.8 C+0.10 C
197427.6 C-0.08 C
197527.5 C-0.22 C
197627.7 C-0.07 C
197727.8 C+0.10 C
197827.5 C-0.19 C
197927.5 C-0.18 C
198027.6 C-0.16 C
198127.5 C-0.21 C
198227.6 C-0.14 C
198327.7 C-0.05 C
198427.6 C-0.13 C
198527.4 C-0.30 C
198627.8 C+0.08 C
198727.9 C+0.13 C
198827.9 C+0.20 C
198927.9 C+0.16 C
199027.9 C+0.21 C
199127.6 C-0.13 C
199227.5 C-0.22 C
199327.6 C-0.17 C
199427.7 C-0.03 C
199527.8 C+0.04 C
199627.8 C+0.08 C
199727.8 C+0.11 C
199828.1 C+0.37 C
199927.8 C+0.12 C
200027.8 C+0.09 C
200128.2 C+0.51 C
200228.4 C+0.69 C
200328.1 C+0.42 C
200428.4 C+0.70 C
200528.1 C+0.40 C
200628.3 C+0.53 C
200728.3 C+0.61 C
200827.7 C+0.02 C
200927.7 C-0.05 C
201027.7 C+0.02 C
201127.7 C-0.06 C
201227.9 C+0.14 C
201328.0 C+0.28 C
201428.0 C+0.31 C
201528.3 C+0.57 C
201628.4 C+0.63 C
201728.2 C+0.48 C
202126.7 C-1.01 C
202428.0 C+0.27 C
202527.7 C+0.01 C

The annual mean temperature here has risen by 0.1 C (0.1 to 0.1) per decade over 1952 to 2025. In Fahrenheit: 0.2 F (0.1 to 0.2) per decade. The slope is a straight line fitted to 69 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Koror
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature0.1 C (0.1 to 0.1) per decade0.2 F (0.1 to 0.2) per decade1952 to 202569Rise
Mean daily maximum0.05 C (-0.01 to 0.11) per decade0.09 F (-0.02 to 0.19) per decade1952 to 202569Not clearly different from zero
Mean daily minimum0.1 C (0.1 to 0.2) per decade0.2 F (0.2 to 0.3) per decade1952 to 202569Rise

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 Koror: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)35.0 C (95.0 F)197633.3 C (91.9 F)76
Coldest night (TNn)20.6 C (69.1 F)195321.7 C (71.1 F)76
Wettest day (Rx1day)350.0 mm (13.8 in)1991136.7 mm (5.4 in)76
Wettest five days (Rx5day)536.5 mm (21.1 in)2001249.2 mm (9.8 in)76
Longest dry spell (CDD)24 days19839 days76

Hottest day (TXx)

Hottest day (TXx) at Koror by year The hottest day of the year at Koror, 1951 to 2026. The record is 35.0 C (95.0 F) in 1976, marked on the chart; the median year is 33.3 C (91.9 F). 31323334351960198020002020Record: 35.0 C (95.0 F) in 1976
The hottest day of the year at Koror, 1951 to 2026. The record is 35.0 C (95.0 F) in 1976, marked on the chart; the median year is 33.3 C (91.9 F).
Hottest day (TXx) at Koror by year
YearHottest day (TXx)
195133.9 C (93.0 F)
195233.3 C (91.9 F)
195333.3 C (91.9 F)
195433.9 C (93.0 F)
195533.3 C (91.9 F)
195632.8 C (91.0 F)
195732.8 C (91.0 F)
195833.9 C (93.0 F)
195932.8 C (91.0 F)
196033.3 C (91.9 F)
196132.8 C (91.0 F)
196232.8 C (91.0 F)
196332.8 C (91.0 F)
196432.8 C (91.0 F)
196532.2 C (90.0 F)
196632.8 C (91.0 F)
196733.3 C (91.9 F)
196833.9 C (93.0 F)
196932.8 C (91.0 F)
197032.8 C (91.0 F)
197133.3 C (91.9 F)
197233.9 C (93.0 F)
197333.3 C (91.9 F)
197433.3 C (91.9 F)
197532.8 C (91.0 F)
197635.0 C (95.0 F)
197732.8 C (91.0 F)
197833.3 C (91.9 F)
197933.3 C (91.9 F)
198033.3 C (91.9 F)
198133.3 C (91.9 F)
198232.8 C (91.0 F)
198332.8 C (91.0 F)
198432.8 C (91.0 F)
198532.8 C (91.0 F)
198633.3 C (91.9 F)
198733.9 C (93.0 F)
198833.9 C (93.0 F)
198933.3 C (91.9 F)
199033.3 C (91.9 F)
199133.3 C (91.9 F)
199233.3 C (91.9 F)
199333.9 C (93.0 F)
199433.3 C (91.9 F)
199533.3 C (91.9 F)
199633.3 C (91.9 F)
199733.3 C (91.9 F)
199834.4 C (93.9 F)
199933.9 C (93.0 F)
200034.4 C (93.9 F)
200134.4 C (93.9 F)
200233.9 C (93.0 F)
200333.9 C (93.0 F)
200433.9 C (93.0 F)
200533.9 C (93.0 F)
200633.9 C (93.0 F)
200733.9 C (93.0 F)
200833.3 C (91.9 F)
200933.3 C (91.9 F)
201033.3 C (91.9 F)
201132.8 C (91.0 F)
201233.3 C (91.9 F)
201333.9 C (93.0 F)
201433.3 C (91.9 F)
201534.4 C (93.9 F)
201634.4 C (93.9 F)
201733.9 C (93.0 F)
201835.0 C (95.0 F)
201932.8 C (91.0 F)
202034.4 C (93.9 F)
202131.1 C (88.0 F)
202231.7 C (89.1 F)
202331.7 C (89.1 F)
202432.2 C (90.0 F)
202531.7 C (89.1 F)
202632.8 C (91.0 F)

Coldest night (TNn)

Coldest night (TNn) at Koror by year The coldest night of the year at Koror, 1951 to 2026. The record is 20.6 C (69.1 F) in 1953, marked on the chart; the median year is 21.7 C (71.1 F). 20212223241960198020002020Record: 20.6 C (69.1 F) in 1953
The coldest night of the year at Koror, 1951 to 2026. The record is 20.6 C (69.1 F) in 1953, marked on the chart; the median year is 21.7 C (71.1 F).
Coldest night (TNn) at Koror by year
YearColdest night (TNn)
195121.7 C (71.1 F)
195221.7 C (71.1 F)
195320.6 C (69.1 F)
195421.1 C (70.0 F)
195521.1 C (70.0 F)
195621.7 C (71.1 F)
195722.2 C (72.0 F)
195821.7 C (71.1 F)
195921.7 C (71.1 F)
196022.2 C (72.0 F)
196121.7 C (71.1 F)
196222.2 C (72.0 F)
196321.7 C (71.1 F)
196422.2 C (72.0 F)
196521.7 C (71.1 F)
196622.2 C (72.0 F)
196721.7 C (71.1 F)
196822.2 C (72.0 F)
196922.2 C (72.0 F)
197022.2 C (72.0 F)
197121.7 C (71.1 F)
197221.7 C (71.1 F)
197322.2 C (72.0 F)
197421.1 C (70.0 F)
197521.7 C (71.1 F)
197622.2 C (72.0 F)
197722.2 C (72.0 F)
197821.1 C (70.0 F)
197920.6 C (69.1 F)
198021.1 C (70.0 F)
198121.7 C (71.1 F)
198221.1 C (70.0 F)
198322.2 C (72.0 F)
198421.1 C (70.0 F)
198521.7 C (71.1 F)
198622.2 C (72.0 F)
198722.2 C (72.0 F)
198821.7 C (71.1 F)
198921.1 C (70.0 F)
199021.1 C (70.0 F)
199121.1 C (70.0 F)
199221.7 C (71.1 F)
199321.7 C (71.1 F)
199421.1 C (70.0 F)
199522.2 C (72.0 F)
199621.7 C (71.1 F)
199721.7 C (71.1 F)
199820.6 C (69.1 F)
199921.7 C (71.1 F)
200021.1 C (70.0 F)
200122.2 C (72.0 F)
200222.8 C (73.0 F)
200321.7 C (71.1 F)
200421.7 C (71.1 F)
200521.7 C (71.1 F)
200622.2 C (72.0 F)
200721.7 C (71.1 F)
200822.2 C (72.0 F)
200922.2 C (72.0 F)
201021.7 C (71.1 F)
201122.8 C (73.0 F)
201222.8 C (73.0 F)
201321.7 C (71.1 F)
201421.7 C (71.1 F)
201522.2 C (72.0 F)
201622.8 C (73.0 F)
201722.2 C (72.0 F)
201822.8 C (73.0 F)
201923.3 C (73.9 F)
202023.3 C (73.9 F)
202122.8 C (73.0 F)
202222.2 C (72.0 F)
202323.3 C (73.9 F)
202423.9 C (75.0 F)
202523.3 C (73.9 F)
202622.8 C (73.0 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Koror by year The wettest day of the year at Koror, 1951 to 2026. The record is 350.0 mm (13.8 in) in 1991, marked on the chart; the median year is 136.7 mm (5.4 in). 01002003004001960198020002020Record: 350.0 mm (13.8 in) in 1991
The wettest day of the year at Koror, 1951 to 2026. The record is 350.0 mm (13.8 in) in 1991, marked on the chart; the median year is 136.7 mm (5.4 in).
Wettest day (Rx1day) at Koror by year
YearWettest day (Rx1day)
1951105.7 mm (4.2 in)
1952126.0 mm (5.0 in)
1953156.7 mm (6.2 in)
1954127.8 mm (5.0 in)
1955194.3 mm (7.6 in)
1956137.9 mm (5.4 in)
1957157.0 mm (6.2 in)
1958208.3 mm (8.2 in)
1959175.5 mm (6.9 in)
1960124.7 mm (4.9 in)
1961107.7 mm (4.2 in)
1962208.5 mm (8.2 in)
1963114.6 mm (4.5 in)
1964121.4 mm (4.8 in)
1965121.9 mm (4.8 in)
1966135.4 mm (5.3 in)
1967131.1 mm (5.2 in)
196899.8 mm (3.9 in)
1969105.4 mm (4.1 in)
1970100.6 mm (4.0 in)
1971201.2 mm (7.9 in)
1972147.8 mm (5.8 in)
1973114.8 mm (4.5 in)
1974348.5 mm (13.7 in)
1975173.5 mm (6.8 in)
1976305.8 mm (12.0 in)
1977105.4 mm (4.1 in)
1978157.5 mm (6.2 in)
1979296.4 mm (11.7 in)
1980200.7 mm (7.9 in)
1981192.0 mm (7.6 in)
1982195.6 mm (7.7 in)
198379.8 mm (3.1 in)
198481.5 mm (3.2 in)
1985136.9 mm (5.4 in)
1986136.4 mm (5.4 in)
1987146.6 mm (5.8 in)
1988156.5 mm (6.2 in)
1989134.4 mm (5.3 in)
1990203.5 mm (8.0 in)
1991350.0 mm (13.8 in)
199284.3 mm (3.3 in)
199376.2 mm (3.0 in)
1994119.1 mm (4.7 in)
1995168.7 mm (6.6 in)
1996101.3 mm (4.0 in)
1997135.6 mm (5.3 in)
1998114.8 mm (4.5 in)
1999179.3 mm (7.1 in)
2000143.3 mm (5.6 in)
2001180.6 mm (7.1 in)
2002145.8 mm (5.7 in)
2003124.7 mm (4.9 in)
2004202.9 mm (8.0 in)
2005191.8 mm (7.6 in)
2006186.2 mm (7.3 in)
2007101.6 mm (4.0 in)
200897.3 mm (3.8 in)
2009115.1 mm (4.5 in)
201080.8 mm (3.2 in)
2011254.3 mm (10.0 in)
201272.9 mm (2.9 in)
201388.1 mm (3.5 in)
2014159.0 mm (6.3 in)
2015117.6 mm (4.6 in)
201685.6 mm (3.4 in)
2017126.7 mm (5.0 in)
2018176.8 mm (7.0 in)
201985.6 mm (3.4 in)
2020115.6 mm (4.6 in)
2021168.4 mm (6.6 in)
2022207.3 mm (8.2 in)
2023186.4 mm (7.3 in)
2024162.1 mm (6.4 in)
2025120.4 mm (4.7 in)
2026140.5 mm (5.5 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Koror by year The wettest five days of the year at Koror, 1951 to 2026. The record is 536.5 mm (21.1 in) in 2001, marked on the chart; the median year is 249.2 mm (9.8 in). 02004006001960198020002020Record: 536.5 mm (21.1 in) in 2001
The wettest five days of the year at Koror, 1951 to 2026. The record is 536.5 mm (21.1 in) in 2001, marked on the chart; the median year is 249.2 mm (9.8 in).
Wettest five days (Rx5day) at Koror by year
YearWettest five days (Rx5day)
1951202.9 mm (8.0 in)
1952260.5 mm (10.3 in)
1953272.5 mm (10.7 in)
1954331.7 mm (13.1 in)
1955353.1 mm (13.9 in)
1956200.4 mm (7.9 in)
1957298.5 mm (11.8 in)
1958322.3 mm (12.7 in)
1959235.1 mm (9.3 in)
1960247.1 mm (9.7 in)
1961243.1 mm (9.6 in)
1962369.8 mm (14.6 in)
1963211.7 mm (8.3 in)
1964197.4 mm (7.8 in)
1965229.3 mm (9.0 in)
1966235.0 mm (9.3 in)
1967200.0 mm (7.9 in)
1968196.8 mm (7.7 in)
1969294.7 mm (11.6 in)
1970172.0 mm (6.8 in)
1971275.1 mm (10.8 in)
1972329.9 mm (13.0 in)
1973253.0 mm (10.0 in)
1974467.6 mm (18.4 in)
1975214.1 mm (8.4 in)
1976471.7 mm (18.6 in)
1977197.8 mm (7.8 in)
1978257.9 mm (10.2 in)
1979518.4 mm (20.4 in)
1980269.7 mm (10.6 in)
1981311.9 mm (12.3 in)
1982301.7 mm (11.9 in)
1983219.7 mm (8.6 in)
1984185.8 mm (7.3 in)
1985246.9 mm (9.7 in)
1986263.6 mm (10.4 in)
1987268.2 mm (10.6 in)
1988215.0 mm (8.5 in)
1989286.6 mm (11.3 in)
1990424.7 mm (16.7 in)
1991385.8 mm (15.2 in)
1992198.8 mm (7.8 in)
1993221.8 mm (8.7 in)
1994191.8 mm (7.6 in)
1995225.9 mm (8.9 in)
1996218.9 mm (8.6 in)
1997249.3 mm (9.8 in)
1998149.1 mm (5.9 in)
1999275.5 mm (10.8 in)
2000241.9 mm (9.5 in)
2001536.5 mm (21.1 in)
2002272.0 mm (10.7 in)
2003305.8 mm (12.0 in)
2004358.3 mm (14.1 in)
2005219.2 mm (8.6 in)
2006234.4 mm (9.2 in)
2007192.8 mm (7.6 in)
2008215.9 mm (8.5 in)
2009290.8 mm (11.4 in)
2010130.4 mm (5.1 in)
2011470.5 mm (18.5 in)
2012140.5 mm (5.5 in)
2013153.7 mm (6.1 in)
2014289.1 mm (11.4 in)
2015184.1 mm (7.2 in)
2016203.8 mm (8.0 in)
2017280.7 mm (11.1 in)
2018250.2 mm (9.9 in)
2019117.5 mm (4.6 in)
2020249.0 mm (9.8 in)
2021459.5 mm (18.1 in)
2022262.1 mm (10.3 in)
2023299.4 mm (11.8 in)
2024241.8 mm (9.5 in)
2025285.0 mm (11.2 in)
2026213.4 mm (8.4 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Koror by year The longest dry spell of the year at Koror, 1951 to 2026. The record is 24 days in 1983, marked on the chart; the median year is 9 days. 05101520251960198020002020Record: 24 days in 1983
The longest dry spell of the year at Koror, 1951 to 2026. The record is 24 days in 1983, marked on the chart; the median year is 9 days.
Longest dry spell (CDD) at Koror by year
YearLongest dry spell (CDD)
19519 days
19528 days
19536 days
195413 days
19558 days
19567 days
19579 days
19586 days
195910 days
19608 days
19619 days
19628 days
196313 days
19645 days
196515 days
19667 days
19679 days
19689 days
19699 days
197010 days
19718 days
197213 days
197312 days
19747 days
197510 days
197610 days
197714 days
19788 days
19798 days
198010 days
198111 days
198215 days
198324 days
19848 days
198511 days
198612 days
198717 days
198812 days
198912 days
199012 days
199112 days
199213 days
199312 days
199417 days
19957 days
199610 days
199715 days
199814 days
19997 days
200013 days
20018 days
200212 days
200313 days
200411 days
20058 days
20066 days
20079 days
20085 days
20099 days
201011 days
20115 days
20129 days
20138 days
20146 days
201516 days
20167 days
20179 days
20189 days
20198 days
202014 days
20217 days
20226 days
20234 days
20249 days
20256 days
202614 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

71 years, 1952 to 2025

A day with at least 138.2 mm (5.4 in) of rain is expected about once in 2 years. A day with at least 358.3 mm (14.1 in) of rain is expected about once in 100 years.

Rainfall return levels at Koror: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years138.2 mm (5.4 in)
5 years187.7 mm (7.4 in)
10 years224.0 mm (8.8 in)
25 years274.2 mm (10.8 in)
50 years314.8 mm (12.4 in)
100 years358.3 mm (14.1 in)Longer than the 71 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, 71 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: 350.0 mm (13.8 in) in 1991; 348.5 mm (13.7 in) in 1974; 305.8 mm (12.0 in) in 1976.

Climate Twins

2006 to 2025 against 1961 to 1990

Over 2006 to 2025, Koror had a mean temperature of 27.9 C (82.2 F) and 3,702.6 mm (145.8 in) of rain a year. The 3 stations whose 1961 to 1990 climate was closest to that are Chuuk WSO AP (Federated States of Micronesia, 1,916 km away), Cubi Point Nf (Philippines, 1,758 km away) and Kuching (Malaysia, 2,753 km away).

Climate twins of Koror: stations whose 1961 to 1990 climate is closest to its 2006 to 2025 climate
Twin stationCountryDistance awayMean temperature, 1961-1990Rain a year, 1961-1990Climate difference
Chuuk WSO APFederated States of Micronesia1,916 km (1,191 mi)27.6 C (81.6 F)3,523.0 mm (138.7 in)0.81
Cubi Point NfPhilippines1,758 km (1,092 mi)28.1 C (82.5 F)3,603.7 mm (141.9 in)0.96
KuchingMalaysia2,753 km (1,711 mi)27.2 C (81.0 F)3,868.3 mm (152.3 in)1.09

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