Wakkanai climate by month
Averages and records for each calendar month at Wakkanai, Japan, from 1951 to 2026. The warmest month is August, averaging 22.2°C; the coolest is January at −3.3°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | −3.3°C | −7.8°C | 7.4°C23 January 2009 | −19.1°C23 January 1954 | 46 / 75 |
| February | −3.1°C | −8.0°C | 9.5°C22 February 2026 | −18.3°C17 February 1978 | 42 / 75 |
| March | 1.1°C | −4.2°C | 13.1°C28 March 2018 | −17.4°C22 March 1970 | 53 / 75 |
| April | 7.4°C | 1.8°C | 20.2°C25 April 1999 | −8.0°C1 April 1953 | 54 / 75 |
| May | 12.4°C | 5.8°C | 26.9°C23 May 1958 | −2.6°C4 May 1992 | 62 / 75 |
| June | 15.9°C | 9.7°C | 26.8°C30 June 1977 | 2.2°C4 June 1986 | 60 / 75 |
| July | 20.0°C | 14.5°C | 29.9°C29 July 2018 | 6.4°C4 July 1986 | 66 / 75 |
| August | 22.2°C | 16.8°C | 30.7°C21 August 1951 | 8.9°C25 August 1954 | 68 / 75 |
| September | 19.8°C | 13.7°C | 29.7°C8 September 2019 | 4.2°C30 September 1969 | 65 / 75 |
| October | 13.8°C | 7.5°C | 23.5°C2 October 1956 | −1.6°C29 October 1964 | 60 / 74 |
| November | 5.8°C | 0.5°C | 17.3°C1 November 1990 | −11.4°C29 November 1971 | 42 / 74 |
| December | 0.1°C | −4.6°C | 11.5°C3 December 1958 | −16.0°C22 December 1952 | 43 / 74 |
Years shows the number behind the average high, then the number holding a record for that month. They differ because a year contributes an average only when the month has at least 25 days of readings, while a single reading is enough to set a record. The average low is withheld on the same 25-day rule and is counted separately again; it is shown as a dash where the archive cannot support it. Across the twelve months here the averages rest on 42 to 68 years each.
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Every figure on this page is computed from NOAA GHCN-Daily observations stored per station, per year, per month. Nothing is modelled, interpolated or estimated, and a month the archive never covered is left out rather than filled in. A station appears here only once all twelve months carry an average from at least 10 years. See how this is built.