Sapporo climate by month
Averages and records for each calendar month at Sapporo, Japan, from 1951 to 2026. The warmest month is August, averaging 26.3°C; the coolest is January at −0.8°C.
| Month | Avg high | Avg low | Record high | Record low | Years |
|---|---|---|---|---|---|
| January | −0.8°C | −8.6°C | 8.4°C8 January 1983 | −20.9°C24 January 1954 | 69 / 75 |
| February | 0.0°C | −8.1°C | 10.8°C28 February 1953 | −19.6°C21 February 1953 | 63 / 75 |
| March | 3.9°C | −3.9°C | 16.4°C28 March 2018 | −17.1°C5 March 1965 | 67 / 75 |
| April | 11.6°C | 2.2°C | 28.0°C21 April 1998 | −8.0°C3 April 1960 | 69 / 75 |
| May | 17.8°C | 7.4°C | 34.2°C27 May 2019 | −2.2°C1 May 1955 | 69 / 75 |
| June | 21.4°C | 11.9°C | 32.9°C25 June 2025 | 2.5°C9 June 1954 | 69 / 75 |
| July | 25.2°C | 16.7°C | 36.0°C31 July 2000 | 7.0°C4 July 1968 | 68 / 75 |
| August | 26.3°C | 18.2°C | 36.2°C7 August 1994 | 8.8°C19 August 1971 | 69 / 75 |
| September | 22.3°C | 12.8°C | 32.7°C2 September 1990 | 0.8°C28 September 1964 | 65 / 75 |
| October | 16.0°C | 5.9°C | 27.6°C3 October 2025 | −3.0°C26 October 1961 | 67 / 74 |
| November | 8.3°C | 0.2°C | 22.4°C3 November 2003 | −12.0°C27 November 1955 | 62 / 74 |
| December | 2.0°C | −5.1°C | 14.8°C4 December 1989 | −20.2°C7 December 1953 | 63 / 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 62 to 69 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.