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Wakkanai Weather Records (JA000047401)

Record envelope, standing records and threshold days for Wakkanai (JA000047401), Japan, with 76 years of record.

Key Facts for Wakkanai

  • Wakkanai (JA000047401) is a weather station in Japan at 45.42 latitude and 141.68 longitude, 12 m (39 ft) above sea level.
  • The station reports from 1951 to 2026, 76 years of record.
  • 1,464 records set at Wakkanai still stand.
  • Records are tracked for tmax, tmin, prcp: an element needs 30 years of data to be eligible.
  • Wakkanai set a daily record precipitation of 31.5 mm (1.2 in) on 3 October 2026 (provisional).

Provisional Records

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

About the Station

  • Location: Japan, 45.42 latitude, 141.68 longitude.
  • Elevation: 12 m (39 ft).
  • Period of record: 1951 to 2026, 76 years.
  • Eligible elements: tmax, tmin, prcp.

Daily Record Envelope and 2026

13 days at or beyond a record
Daily record high and record low at Wakkanai, with 2026 drawn through them The band shows the record high and record low for each calendar day at Wakkanai. The lines show the 2026 daily maximum and minimum. 13 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. -20-10010203040 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at Wakkanai. The lines show the 2026 daily maximum and minimum. 13 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at Wakkanai, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
Jan7.4 C (45.3 F)-19.1 C (-2.4 F)3.7 C (38.7 F)-10.1 C (13.8 F)
Feb9.5 C (49.1 F)-18.3 C (-0.9 F)9.5 C (49.1 F)-8.5 C (16.7 F)
Mar13.1 C (55.6 F)-17.4 C (0.7 F)10.2 C (50.4 F)-5.0 C (23.0 F)
Apr20.2 C (68.4 F)-8.0 C (17.6 F)14.8 C (58.6 F)-0.1 C (31.8 F)
May26.9 C (80.4 F)-2.6 C (27.3 F)18.6 C (65.5 F)1.6 C (34.9 F)
Jun26.8 C (80.2 F)2.2 C (36.0 F)24.4 C (75.9 F)7.2 C (45.0 F)
Jul29.9 C (85.8 F)6.4 C (43.5 F)28.4 C (83.1 F)10.9 C (51.6 F)
Aug30.7 C (87.3 F)8.9 C (48.0 F)29.8 C (85.6 F)13.5 C (56.3 F)
Sep29.7 C (85.5 F)4.2 C (39.6 F)23.8 C (74.8 F)9.3 C (48.7 F)
Oct23.5 C (74.3 F)-1.6 C (29.1 F)21.6 C (70.9 F)8.2 C (46.8 F)
Nov17.3 C (63.1 F)-11.4 C (11.5 F)n/an/a
Dec11.5 C (52.7 F)-16.0 C (3.2 F)n/an/a

Which Years Hold Standing Records

1,464 standing records
Standing records at Wakkanai by the year they were set 1,464 records at Wakkanai still stand. 2025 holds the most, with 67. 0204060801951: 321952: 291953: 431954: 331955: 181956: 221957: 241958: 131959: 191960: 201961: 201962: 191963: 181964: 291965: 211966: 361967: 291968: 321969: 621970: 291971: 261972: 151973: 171974: 101975: 151976: 181977: 271978: 321979: 251980: 261981: 181982: 181983: 211984: 231985: 211986: 201987: 111988: 201989: 331990: 181991: 91992: 171993: 121994: 121995: 131996: 131997: 161998: 81999: 212000: 82001: 242002: 272003: 72004: 132006: 82007: 102008: 102009: 82010: 222011: 172012: 102013: 72014: 22015: 32016: 152017: 42018: 122019: 192020: 92021: 62022: 62023: 222024: 72025: 672026: 381951195919671975198319911999200820162024
1,464 records at Wakkanai still stand. 2025 holds the most, with 67.
Standing records at Wakkanai by the year they were set
Year setStanding records
195132
195229
195343
195433
195518
195622
195724
195813
195919
196020
196120
196219
196318
196429
196521
196636
196729
196832
196962
197029
197126
197215
197317
197410
197515
197618
197727
197832
197925
198026
198118
198218
198321
198423
198521
198620
198711
198820
198933
199018
19919
199217
199312
199412
199513
199613
199716
19988
199921
20008
200124
200227
20037
200413
20068
200710
200810
20098
201022
201117
201210
20137
20142
20153
201615
20174
201812
201919
20209
20216
20226
202322
20247
202567
202638

All-Time Record Progression

3 new records
When Wakkanai set new all-time records 3 all-time records were set at Wakkanai between 7 August 2020 and 2 July 2026. Each dot is a new record. Record daily precipitation7 August 2020: Record daily precipitation 160.0 mm (6.3 in)1 July 2026: Record daily precipitation 229.0 mm (9.0 in)2 July 2026: Record daily precipitation 233.0 mm (9.2 in)20202025
3 all-time records were set at Wakkanai between 7 August 2020 and 2 July 2026. Each dot is a new record.
When Wakkanai set new all-time records
DateKindDetail
2020-08-07Record daily precipitationRecord daily precipitation 160.0 mm (6.3 in)
2026-07-01Record daily precipitationRecord daily precipitation 229.0 mm (9.0 in)
2026-07-02Record daily precipitationRecord daily precipitation 233.0 mm (9.2 in)

Wettest Day of Each Month

Jul: 233.0 mm (9.2 in)
Record daily precipitation for each month at Wakkanai The wettest day on record for each calendar month at Wakkanai. The most was 233.0 mm (9.2 in) on 2 July 2026. 0100200300 Jan: 61.6 mm (2.4 in), 3 January 1963 Jan Feb: 38.5 mm (1.5 in), 28 February 1972 Feb Mar: 41.4 mm (1.6 in), 26 March 1965 Mar Apr: 42.9 mm (1.7 in), 17 April 2011 Apr May: 57.5 mm (2.3 in), 11 May 1970 May Jun: 58.5 mm (2.3 in), 1 June 1974 Jun Jul: 233.0 mm (9.2 in), 2 July 2026 Jul Aug: 160.0 mm (6.3 in), 7 August 2020 Aug Sep: 112.0 mm (4.4 in), 6 September 2016 Sep Oct: 155.5 mm (6.1 in), 25 October 1970 Oct Nov: 140.0 mm (5.5 in), 10 November 1993 Nov Dec: 71.5 mm (2.8 in), 1 December 1972 Dec
The wettest day on record for each calendar month at Wakkanai. The most was 233.0 mm (9.2 in) on 2 July 2026.
Record daily precipitation for each month at Wakkanai
MonthRecord daily precipitation (mm)Date
Jan61.6 mm (2.4 in)3 January 1963
Feb38.5 mm (1.5 in)28 February 1972
Mar41.4 mm (1.6 in)26 March 1965
Apr42.9 mm (1.7 in)17 April 2011
May57.5 mm (2.3 in)11 May 1970
Jun58.5 mm (2.3 in)1 June 1974
Jul233.0 mm (9.2 in)2 July 2026
Aug160.0 mm (6.3 in)7 August 2020
Sep112.0 mm (4.4 in)6 September 2016
Oct155.5 mm (6.1 in)25 October 1970
Nov140.0 mm (5.5 in)10 November 1993
Dec71.5 mm (2.8 in)1 December 1972

Period of Record Coverage

1951 to 2026
Days with data per year at Wakkanai 75 years of record at Wakkanai, 1951 to 2026. 35 years have data for under 90 percent of days and are left out of rankings: 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997 and others. 1951: 365 of 365 days1952: 366 of 366 days1953: 352 of 365 days1954: 354 of 365 days1955: 355 of 365 days1956: 358 of 366 days1957: 352 of 365 days1958: 354 of 365 days1959: 351 of 365 days1960: 352 of 366 days1961: 349 of 365 days1962: 355 of 365 days1963: 354 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: 328 of 365 days1991: 307 of 365 days1992: 297 of 366 days1993: 287 of 365 days1994: 285 of 365 days1995: 314 of 365 days1996: 287 of 366 days1997: 301 of 365 days1998: 292 of 365 days1999: 281 of 365 days2000: 293 of 366 days2001: 287 of 365 days2002: 291 of 365 days2003: 286 of 365 days2004: 284 of 366 days2006: 293 of 365 days2007: 302 of 365 days2008: 299 of 366 days2009: 302 of 365 days2010: 293 of 365 days2011: 294 of 365 days2012: 295 of 366 days2013: 90 of 365 days2014: 3 of 365 days2015: 236 of 365 days2016: 271 of 366 days2017: 279 of 365 days2018: 266 of 365 days2019: 273 of 365 days2020: 57 of 366 days2021: 4 of 365 days2022: 131 of 365 days2023: 7 of 365 days2024: 2 of 366 days2025: 360 of 365 days2026: 276 of 365 days1960197019801990200020102020
75 years of record at Wakkanai, 1951 to 2026. 35 years have data for under 90 percent of days and are left out of rankings: 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997 and others.
Days with data per year at Wakkanai
YearDays with dataShare of yearComplete
1951365100%Yes
1952366100%Yes
195335296%Yes
195435497%Yes
195535597%Yes
195635898%Yes
195735296%Yes
195835497%Yes
195935196%Yes
196035296%Yes
196134996%Yes
196235597%Yes
196335497%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
199032890%No
199130784%No
199229781%No
199328779%No
199428578%No
199531486%No
199628778%No
199730182%No
199829280%No
199928177%No
200029380%No
200128779%No
200229180%No
200328678%No
200428478%No
200629380%No
200730283%No
200829982%No
200930283%No
201029380%No
201129481%No
201229581%No
20139025%No
201431%No
201523665%No
201627174%No
201727976%No
201826673%No
201927375%No
20205716%No
202141%No
202213136%No
202372%No
202421%No
202536099%Yes
202627676%No

Latest Records

20
Latest records at Wakkanai
DateStationRecordValueBeat old record byOld record stoodSignificance
3 October 2026Wakkanai, JPdaily rain (Provisional)31.5 mm (1.2 in)1.5 mm (0.06 in)5 years9 of 100 (Routine)
28 September 2026Wakkanai, JPdaily rain (Provisional)179.5 mm (7.1 in)109.5 mm (4.3 in)36 years58 of 100 (Notable)
27 September 2026Wakkanai, JPdaily rain (Provisional)40.0 mm (1.6 in)12.3 mm (0.5 in)65 years34 of 100 (Routine)
26 September 2026Wakkanai, JPdaily rain (Provisional)249.0 mm (9.8 in)185.0 mm (7.3 in)72 years68 of 100 (Major)
20 September 2026Wakkanai, JPdaily rain (Provisional)255.0 mm (10.0 in)218.9 mm (8.6 in)13 years51 of 100 (Notable)
19 September 2026Wakkanai, JPdaily high max (Provisional)23.8 C (74.8 F)1.0 C (1.8 F)64 years29 of 100 (Routine)
18 September 2026Wakkanai, JPdaily high max (Tie, Provisional)23.8 C (74.8 F)tie72 years7 of 100 (Routine)
16 September 2026Wakkanai, JPall-time rain (Provisional)314.5 mm (12.4 in)31.0 mm (1.2 in)0 years49 of 100 (Notable)
14 September 2026Wakkanai, JPdaily rain (Provisional)199.0 mm (7.8 in)127.1 mm (5.0 in)21 years53 of 100 (Notable)
13 September 2026Wakkanai, JPdaily rain (Provisional)138.5 mm (5.5 in)110.9 mm (4.4 in)61 years65 of 100 (Major)
13 September 2026Wakkanai, JPdaily high min (Provisional)19.1 C (66.4 F)0.1 C (0.2 F)47 years21 of 100 (Routine)
12 September 2026Wakkanai, JPdaily rain (Provisional)109.5 mm (4.3 in)65.5 mm (2.6 in)37 years58 of 100 (Notable)
11 September 2026Wakkanai, JPdaily high min (Provisional)19.9 C (67.8 F)0.5 C (0.9 F)27 years16 of 100 (Routine)
10 September 2026Wakkanai, JPall-time rain (Provisional)283.5 mm (11.2 in)6.5 mm (0.26 in)0 years31 of 100 (Routine)
10 September 2026Wakkanai, JPdaily high min (Provisional)19.8 C (67.6 F)0.3 C (0.5 F)28 years16 of 100 (Routine)
9 September 2026Wakkanai, JPdaily rain (Provisional)82.0 mm (3.2 in)27.9 mm (1.1 in)21 years33 of 100 (Routine)
7 September 2026Wakkanai, JPdaily rain (Provisional)232.5 mm (9.2 in)135.5 mm (5.3 in)9 years49 of 100 (Notable)
4 September 2026Wakkanai, JPall-time rain (Provisional)277.0 mm (10.9 in)44.0 mm (1.7 in)0 years58 of 100 (Notable)
19 August 2026Wakkanai, JPdaily high min (Provisional)23.1 C (73.6 F)0.3 C (0.5 F)75 years30 of 100 (Routine)
17 August 2026Wakkanai, JPdaily high min (Provisional)22.9 C (73.2 F)0.4 C (0.7 F)12 years11 of 100 (Routine)

Climate Trend

40 complete years, 1951 to 2025
Annual mean temperature at Wakkanai as warming stripes, 1951 to 2025 One stripe for each of 40 complete years at Wakkanai, 1951 to 2025. Blue stripes are years cooler than the station's own mean of 6.5 C (43.6 F); red stripes are warmer. The coolest year was 1969, at 5.1 C (41.2 F), and the warmest was 2025, at 8.9 C (48.0 F). The strongest colour marks a difference of 2.5 C (4.5 F). 1951: 6.7 C, +0.2 C from the station mean1952: 5.9 C, -0.6 C from the station mean1953: 5.8 C, -0.7 C from the station mean1954: 5.8 C, -0.7 C from the station mean1955: 7.0 C, +0.5 C from the station mean1956: 6.4 C, -0.1 C from the station mean1957: 6.8 C, +0.3 C from the station mean1958: 6.9 C, +0.4 C from the station mean1959: 7.0 C, +0.5 C from the station mean1960: 6.2 C, -0.3 C from the station mean1961: 7.4 C, +1.0 C from the station mean1962: 6.9 C, +0.4 C from the station mean1963: 7.2 C, +0.7 C from the station mean1964: 6.0 C, -0.5 C from the station mean1965: 6.2 C, -0.3 C from the station mean1966: 6.0 C, -0.5 C from the station mean1967: 6.4 C, -0.1 C from the station mean1968: 7.3 C, +0.8 C from the station mean1969: 5.1 C, -1.4 C from the station mean1970: 6.3 C, -0.2 C from the station mean1971: 5.9 C, -0.6 C from the station mean1972: 6.8 C, +0.4 C from the station mean1973: 6.6 C, +0.2 C from the station mean1974: 6.2 C, -0.3 C from the station mean1975: 6.6 C, +0.1 C from the station mean1976: 6.4 C, -0.1 C from the station mean1977: 6.4 C, -0.1 C from the station mean1978: 6.7 C, +0.2 C from the station mean1979: 6.4 C, -0.1 C from the station mean1980: 6.0 C, -0.5 C from the station mean1981: 6.2 C, -0.2 C from the station mean1982: 7.0 C, +0.5 C from the station mean1983: 5.9 C, -0.6 C from the station mean1984: 6.4 C, -0.1 C from the station mean1985: 6.1 C, -0.4 C from the station mean1986: 5.7 C, -0.8 C from the station mean1987: 6.2 C, -0.3 C from the station mean1988: 6.2 C, -0.3 C from the station mean1989: 7.4 C, +1.0 C from the station mean2025: 8.9 C, +2.4 C from the station mean19511960197019801990200020102020
One stripe for each of 40 complete years at Wakkanai, 1951 to 2025. Blue stripes are years cooler than the station's own mean of 6.5 C (43.6 F); red stripes are warmer. The coolest year was 1969, at 5.1 C (41.2 F), and the warmest was 2025, at 8.9 C (48.0 F). The strongest colour marks a difference of 2.5 C (4.5 F).
Annual mean temperature at Wakkanai as warming stripes, 1951 to 2025
YearAnnual mean temperatureDifference from the station mean
19516.7 C+0.18 C
19525.9 C-0.62 C
19535.8 C-0.72 C
19545.8 C-0.67 C
19557.0 C+0.51 C
19566.4 C-0.07 C
19576.8 C+0.32 C
19586.9 C+0.39 C
19597.0 C+0.50 C
19606.2 C-0.26 C
19617.4 C+0.96 C
19626.9 C+0.41 C
19637.2 C+0.71 C
19646.0 C-0.46 C
19656.2 C-0.32 C
19666.0 C-0.46 C
19676.4 C-0.11 C
19687.3 C+0.83 C
19695.1 C-1.37 C
19706.3 C-0.20 C
19715.9 C-0.61 C
19726.8 C+0.36 C
19736.6 C+0.16 C
19746.2 C-0.31 C
19756.6 C+0.09 C
19766.4 C-0.10 C
19776.4 C-0.08 C
19786.7 C+0.24 C
19796.4 C-0.06 C
19806.0 C-0.52 C
19816.2 C-0.23 C
19827.0 C+0.49 C
19835.9 C-0.61 C
19846.4 C-0.11 C
19856.1 C-0.39 C
19865.7 C-0.79 C
19876.2 C-0.29 C
19886.2 C-0.29 C
19897.4 C+0.95 C
20258.9 C+2.44 C

The annual mean temperature here has risen by 0.14 C (0.00 to 0.29) per decade over 1951 to 2025. In Fahrenheit: 0.26 F (0.01 to 0.52) per decade. The slope is a straight line fitted to 40 complete years; the brackets give its 95 percent interval.

Fitted temperature trends per decade at Wakkanai
MeasurePer decade (C)Per decade (F)PeriodComplete yearsReading
Annual mean temperature0.14 C (0.00 to 0.29) per decade0.26 F (0.01 to 0.52) per decade1951 to 202540Rise
Mean daily maximum0.1 C (-0.1 to 0.2) per decade0.1 F (-0.2 to 0.4) per decade1951 to 202540Not clearly different from zero
Mean daily minimum0.2 C (0.1 to 0.4) per decade0.4 F (0.2 to 0.7) per decade1951 to 202540Rise

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 Wakkanai: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Hottest day (TXx)30.7 C (87.3 F)195127.2 C (81.0 F)75
Coldest night (TNn)-19.1 C (-2.4 F)1954-13.6 C (7.5 F)75
Wettest day (Rx1day)314.5 mm (12.4 in)202660.9 mm (2.4 in)75
Wettest five days (Rx5day)811.0 mm (31.9 in)202687.3 mm (3.4 in)75
Longest dry spell (CDD)28 days198215 days73

Hottest day (TXx)

Hottest day (TXx) at Wakkanai by year The hottest day of the year at Wakkanai, 1951 to 2026. The record is 30.7 C (87.3 F) in 1951, marked on the chart; the median year is 27.2 C (81.0 F). 0102030401960198020002020Record: 30.7 C (87.3 F) in 1951
The hottest day of the year at Wakkanai, 1951 to 2026. The record is 30.7 C (87.3 F) in 1951, marked on the chart; the median year is 27.2 C (81.0 F).
Hottest day (TXx) at Wakkanai by year
YearHottest day (TXx)
195130.7 C (87.3 F)
195227.5 C (81.5 F)
195326.9 C (80.4 F)
195425.9 C (78.6 F)
195529.0 C (84.2 F)
195626.4 C (79.5 F)
195727.9 C (82.2 F)
195827.7 C (81.9 F)
195926.4 C (79.5 F)
196029.4 C (84.9 F)
196128.7 C (83.7 F)
196226.6 C (79.9 F)
196323.9 C (75.0 F)
196425.1 C (77.2 F)
196526.4 C (79.5 F)
196627.9 C (82.2 F)
196727.2 C (81.0 F)
196825.9 C (78.6 F)
196925.6 C (78.1 F)
197028.2 C (82.8 F)
197125.7 C (78.3 F)
197226.6 C (79.9 F)
197328.2 C (82.8 F)
197426.0 C (78.8 F)
197527.3 C (81.1 F)
197626.2 C (79.2 F)
197727.2 C (81.0 F)
197829.5 C (85.1 F)
197927.5 C (81.5 F)
198023.1 C (73.6 F)
198127.1 C (80.8 F)
198230.0 C (86.0 F)
198328.5 C (83.3 F)
198429.2 C (84.6 F)
198529.6 C (85.3 F)
198629.8 C (85.6 F)
198724.8 C (76.6 F)
198830.4 C (86.7 F)
198929.8 C (85.6 F)
199026.5 C (79.7 F)
199125.5 C (77.9 F)
199225.1 C (77.2 F)
199325.4 C (77.7 F)
199429.2 C (84.6 F)
199525.4 C (77.7 F)
199626.2 C (79.2 F)
199725.8 C (78.4 F)
199824.5 C (76.1 F)
199928.7 C (83.7 F)
200029.0 C (84.2 F)
200127.9 C (82.2 F)
200226.4 C (79.5 F)
200323.3 C (73.9 F)
200426.6 C (79.9 F)
200627.5 C (81.5 F)
200727.5 C (81.5 F)
200828.1 C (82.6 F)
200926.5 C (79.7 F)
201028.0 C (82.4 F)
201127.9 C (82.2 F)
201229.0 C (84.2 F)
201320.1 C (68.2 F)
201425.5 C (77.9 F)
201526.1 C (79.0 F)
201628.6 C (83.5 F)
201726.0 C (78.8 F)
201829.9 C (85.8 F)
201929.7 C (85.5 F)
20208.7 C (47.7 F)
202118.3 C (64.9 F)
202228.4 C (83.1 F)
202322.7 C (72.9 F)
202417.3 C (63.1 F)
202527.9 C (82.2 F)
202629.8 C (85.6 F)

Coldest night (TNn)

Coldest night (TNn) at Wakkanai by year The coldest night of the year at Wakkanai, 1951 to 2026. The record is -19.1 C (-2.4 F) in 1954, marked on the chart; the median year is -13.6 C (7.5 F). -20-17.5-15-12.5-10-7.51960198020002020Record: -19.1 C (-2.4 F) in 1954
The coldest night of the year at Wakkanai, 1951 to 2026. The record is -19.1 C (-2.4 F) in 1954, marked on the chart; the median year is -13.6 C (7.5 F).
Coldest night (TNn) at Wakkanai by year
YearColdest night (TNn)
1951-14.7 C (5.5 F)
1952-16.1 C (3.0 F)
1953-15.9 C (3.4 F)
1954-19.1 C (-2.4 F)
1955-13.7 C (7.3 F)
1956-15.4 C (4.3 F)
1957-13.1 C (8.4 F)
1958-15.0 C (5.0 F)
1959-14.4 C (6.1 F)
1960-13.8 C (7.2 F)
1961-16.9 C (1.6 F)
1962-13.7 C (7.3 F)
1963-12.1 C (10.2 F)
1964-13.6 C (7.5 F)
1965-12.6 C (9.3 F)
1966-14.6 C (5.7 F)
1967-17.1 C (1.2 F)
1968-13.8 C (7.2 F)
1969-16.9 C (1.6 F)
1970-18.2 C (-0.8 F)
1971-14.9 C (5.2 F)
1972-14.2 C (6.4 F)
1973-12.1 C (10.2 F)
1974-12.2 C (10.0 F)
1975-13.9 C (7.0 F)
1976-12.2 C (10.0 F)
1977-16.4 C (2.5 F)
1978-18.3 C (-0.9 F)
1979-16.8 C (1.8 F)
1980-15.6 C (3.9 F)
1981-13.0 C (8.6 F)
1982-14.9 C (5.2 F)
1983-14.6 C (5.7 F)
1984-12.2 C (10.0 F)
1985-17.2 C (1.0 F)
1986-16.8 C (1.8 F)
1987-14.0 C (6.8 F)
1988-13.9 C (7.0 F)
1989-11.6 C (11.1 F)
1990-12.1 C (10.2 F)
1991-11.8 C (10.8 F)
1992-9.6 C (14.7 F)
1993-11.3 C (11.7 F)
1994-12.0 C (10.4 F)
1995-11.0 C (12.2 F)
1996-15.2 C (4.6 F)
1997-11.7 C (10.9 F)
1998-14.9 C (5.2 F)
1999-13.5 C (7.7 F)
2000-14.3 C (6.3 F)
2001-15.6 C (3.9 F)
2002-12.1 C (10.2 F)
2003-12.8 C (9.0 F)
2004-10.3 C (13.5 F)
2006-12.6 C (9.3 F)
2007-10.3 C (13.5 F)
2008-13.8 C (7.2 F)
2009-10.5 C (13.1 F)
2010-13.9 C (7.0 F)
2011-11.4 C (11.5 F)
2012-12.9 C (8.8 F)
2013-11.7 C (10.9 F)
2014-12.4 C (9.7 F)
2015-11.0 C (12.2 F)
2016-10.9 C (12.4 F)
2017-12.0 C (10.4 F)
2018-10.6 C (12.9 F)
2019-15.3 C (4.5 F)
2020-11.3 C (11.7 F)
2021-15.2 C (4.6 F)
2022-10.9 C (12.4 F)
2023-13.5 C (7.7 F)
2024-10.0 C (14.0 F)
2025-10.0 C (14.0 F)
2026-10.1 C (13.8 F)

Wettest day (Rx1day)

Wettest day (Rx1day) at Wakkanai by year The wettest day of the year at Wakkanai, 1951 to 2026. The record is 314.5 mm (12.4 in) in 2026, marked on the chart; the median year is 60.9 mm (2.4 in). 01002003004001960198020002020Record: 314.5 mm (12.4 in) in 2026
The wettest day of the year at Wakkanai, 1951 to 2026. The record is 314.5 mm (12.4 in) in 2026, marked on the chart; the median year is 60.9 mm (2.4 in).
Wettest day (Rx1day) at Wakkanai by year
YearWettest day (Rx1day)
195144.3 mm (1.7 in)
195260.9 mm (2.4 in)
195338.0 mm (1.5 in)
195464.0 mm (2.5 in)
1955138.1 mm (5.4 in)
195627.9 mm (1.1 in)
195737.6 mm (1.5 in)
195861.4 mm (2.4 in)
195944.6 mm (1.8 in)
196041.8 mm (1.6 in)
196171.3 mm (2.8 in)
196276.0 mm (3.0 in)
196369.9 mm (2.8 in)
196484.2 mm (3.3 in)
1965102.5 mm (4.0 in)
196682.4 mm (3.2 in)
196739.6 mm (1.6 in)
196843.5 mm (1.7 in)
196960.5 mm (2.4 in)
1970155.5 mm (6.1 in)
197163.0 mm (2.5 in)
197277.5 mm (3.1 in)
197338.0 mm (1.5 in)
197458.5 mm (2.3 in)
197549.5 mm (1.9 in)
197644.5 mm (1.8 in)
197755.0 mm (2.2 in)
197856.0 mm (2.2 in)
197944.0 mm (1.7 in)
198057.0 mm (2.2 in)
198156.5 mm (2.2 in)
198261.0 mm (2.4 in)
198355.0 mm (2.2 in)
198448.0 mm (1.9 in)
198569.5 mm (2.7 in)
198639.5 mm (1.6 in)
198737.0 mm (1.5 in)
198844.0 mm (1.7 in)
198970.0 mm (2.8 in)
199080.0 mm (3.1 in)
199163.0 mm (2.5 in)
199275.9 mm (3.0 in)
1993140.0 mm (5.5 in)
199477.0 mm (3.0 in)
199567.1 mm (2.6 in)
199667.1 mm (2.6 in)
199759.9 mm (2.4 in)
199850.0 mm (2.0 in)
199984.1 mm (3.3 in)
200088.1 mm (3.5 in)
200150.5 mm (2.0 in)
200239.9 mm (1.6 in)
2003108.2 mm (4.3 in)
200471.9 mm (2.8 in)
200661.0 mm (2.4 in)
2007119.4 mm (4.7 in)
200827.4 mm (1.1 in)
200947.5 mm (1.9 in)
201067.1 mm (2.6 in)
201155.6 mm (2.2 in)
201253.1 mm (2.1 in)
201373.4 mm (2.9 in)
2014134.6 mm (5.3 in)
201581.5 mm (3.2 in)
2016112.0 mm (4.4 in)
201744.5 mm (1.8 in)
201855.1 mm (2.2 in)
201936.6 mm (1.4 in)
2020160.0 mm (6.3 in)
202130.0 mm (1.2 in)
202274.9 mm (2.9 in)
2023101.1 mm (4.0 in)
202439.1 mm (1.5 in)
202516.0 mm (0.6 in)
2026314.5 mm (12.4 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at Wakkanai by year The wettest five days of the year at Wakkanai, 1951 to 2026. The record is 811.0 mm (31.9 in) in 2026, marked on the chart; the median year is 87.3 mm (3.4 in). 02004006008001,0001960198020002020Record: 811.0 mm (31.9 in) in 2026
The wettest five days of the year at Wakkanai, 1951 to 2026. The record is 811.0 mm (31.9 in) in 2026, marked on the chart; the median year is 87.3 mm (3.4 in).
Wettest five days (Rx5day) at Wakkanai by year
YearWettest five days (Rx5day)
195187.3 mm (3.4 in)
1952120.4 mm (4.7 in)
1953103.9 mm (4.1 in)
1954117.3 mm (4.6 in)
1955172.8 mm (6.8 in)
195656.3 mm (2.2 in)
195773.9 mm (2.9 in)
195886.4 mm (3.4 in)
195965.4 mm (2.6 in)
196078.2 mm (3.1 in)
196182.9 mm (3.3 in)
1962118.2 mm (4.7 in)
1963106.8 mm (4.2 in)
1964134.3 mm (5.3 in)
1965120.3 mm (4.7 in)
1966110.7 mm (4.4 in)
196759.0 mm (2.3 in)
196869.0 mm (2.7 in)
196964.0 mm (2.5 in)
1970178.5 mm (7.0 in)
197189.0 mm (3.5 in)
1972148.5 mm (5.8 in)
197369.5 mm (2.7 in)
197477.5 mm (3.1 in)
197587.0 mm (3.4 in)
197685.0 mm (3.3 in)
197774.0 mm (2.9 in)
197869.5 mm (2.7 in)
197974.5 mm (2.9 in)
198066.0 mm (2.6 in)
1981161.5 mm (6.4 in)
198290.0 mm (3.5 in)
198391.0 mm (3.6 in)
198468.5 mm (2.7 in)
198586.5 mm (3.4 in)
198660.0 mm (2.4 in)
198757.0 mm (2.2 in)
198880.0 mm (3.1 in)
1989122.0 mm (4.8 in)
199096.0 mm (3.8 in)
199151.8 mm (2.0 in)
199282.3 mm (3.2 in)
1993154.8 mm (6.1 in)
199454.2 mm (2.1 in)
199549.0 mm (1.9 in)
1996116.6 mm (4.6 in)
1997134.1 mm (5.3 in)
199891.0 mm (3.6 in)
1999141.6 mm (5.6 in)
2000130.3 mm (5.1 in)
200150.4 mm (2.0 in)
200274.9 mm (2.9 in)
200356.9 mm (2.2 in)
2004103.4 mm (4.1 in)
200689.5 mm (3.5 in)
2007132.8 mm (5.2 in)
200846.7 mm (1.8 in)
200980.0 mm (3.1 in)
2010114.8 mm (4.5 in)
2011134.1 mm (5.3 in)
2012120.2 mm (4.7 in)
2013122.0 mm (4.8 in)
2014191.7 mm (7.5 in)
2015107.6 mm (4.2 in)
2016250.4 mm (9.9 in)
201756.6 mm (2.2 in)
201883.5 mm (3.3 in)
201961.4 mm (2.4 in)
2020232.9 mm (9.2 in)
202158.4 mm (2.3 in)
202298.0 mm (3.9 in)
2023187.5 mm (7.4 in)
202481.2 mm (3.2 in)
202535.0 mm (1.4 in)
2026811.0 mm (31.9 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at Wakkanai by year The longest dry spell of the year at Wakkanai, 1951 to 2026. The record is 28 days in 1982, marked on the chart; the median year is 15 days. 01020301960198020002020Record: 28 days in 1982
The longest dry spell of the year at Wakkanai, 1951 to 2026. The record is 28 days in 1982, marked on the chart; the median year is 15 days.
Longest dry spell (CDD) at Wakkanai by year
YearLongest dry spell (CDD)
195115 days
195224 days
195313 days
195425 days
195512 days
195615 days
195713 days
195814 days
195916 days
196019 days
19618 days
196221 days
196317 days
196413 days
196510 days
196620 days
196712 days
196819 days
196917 days
197014 days
197118 days
197211 days
197324 days
197427 days
197515 days
197616 days
197717 days
197813 days
197927 days
198025 days
198112 days
198228 days
198315 days
198424 days
198517 days
198614 days
198716 days
198822 days
198919 days
19905 days
19913 days
19923 days
19934 days
19945 days
19957 days
19965 days
19973 days
19983 days
199911 days
2000n/a
2001n/a
20022 days
20035 days
200412 days
200617 days
200726 days
200819 days
200915 days
201019 days
201127 days
201215 days
201315 days
201420 days
201512 days
201617 days
201715 days
201813 days
201921 days
202012 days
202113 days
202211 days
202320 days
202416 days
20257 days
202613 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.

Frost Dates and Growing Season

40 years with a frost

Across 40 years with a frost, the median last spring frost at Wakkanai falls on 19 April and the median first autumn frost on 9 November, which leaves a median of 200 days between them.

Fitted over all years, the growing season changes by +3.6 days per decade at this station.

Frost dates and growing season at Wakkanai
MeasureMedian, all yearsEarliest periodRecent period (1961 to 2025)Recent against earliestFitted trend
Last spring frost19 Apriln/a18 Apriln/a-2.4 days per decade
First autumn frost9 Novembern/a9 Novembern/a+1.1 days per decade
Growing days200 daysn/a205 daysn/a+3.6 days per decade

A frost day is a day with a daily minimum at or below 0 C (32 F). The last spring frost and the first autumn frost are the last and first such days of the cold season, and growing days are the days between them. A negative trend for the last spring frost means it comes earlier.

Rainfall Return Levels

58 years, 1951 to 2024

A day with at least 56.4 mm (2.2 in) of rain is expected about once in 2 years. A day with at least 187.2 mm (7.4 in) of rain is expected about once in 100 years.

Rainfall return levels at Wakkanai: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years56.4 mm (2.2 in)
5 years80.7 mm (3.2 in)
10 years100.4 mm (4.0 in)
25 years130.3 mm (5.1 in)
50 years156.7 mm (6.2 in)
100 years187.2 mm (7.4 in)Longer than the 58 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, 58 years of values from 1951 to 2024.

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: 160.0 mm (6.3 in) in 2020; 155.5 mm (6.1 in) in 1970; 138.1 mm (5.4 in) in 1955.

Station Changes

No change in the annual mean temperature of this station was found against its neighbours.

Download the Data

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