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Sapporo Weather by Month
Average temperatures, rainfall and humidity for Sapporo, Japan, month by month, built from OpenWeather’s historical records. Use it to see what a typical Sapporo month looks like before you travel — then check the live Sapporo forecast for the days ahead.
Warmest month
August
26°C average high
Coolest month
January
-9°C average low
Wettest month
August
106 mm of rain
Driest month
February
9 mm of rain
Average temperature and rainfall in Sapporo by month
Averages of the daily highs and lows recorded in each month, with total rainfall, mean humidity and mean wind speed.
| Month | Avg high | Avg low | Record low / high | Rainfall | Humidity | Wind |
|---|---|---|---|---|---|---|
| January | -1°C | -9°C | -23°C / 11°C | 12 mm | 76% | 13 km/h |
| February | 0°C | -9°C | -24°C / 12°C | 9 mm | 77% | 13 km/h |
| March | 5°C | -3°C | -18°C / 18°C | 33 mm | 71% | 15 km/h |
| April | 12°C | 3°C | -6°C / 25°C | 71 mm | 65% | 17 km/h |
| May | 18°C | 8°C | 0°C / 30°C | 71 mm | 71% | 16 km/h |
| June | 21°C | 13°C | 4°C / 32°C | 78 mm | 78% | 14 km/h |
| July | 26°C | 18°C | 10°C / 36°C | 70 mm | 83% | 14 km/h |
| August | 26°C | 19°C | 9°C / 35°C | 106 mm | 81% | 13 km/h |
| September | 23°C | 14°C | 1°C / 33°C | 83 mm | 79% | 12 km/h |
| October | 16°C | 7°C | -3°C / 28°C | 75 mm | 77% | 13 km/h |
| November | 9°C | 0°C | -13°C / 20°C | 59 mm | 76% | 13 km/h |
| December | 2°C | -6°C | -18°C / 15°C | 28 mm | 74% | 13 km/h |
Best time to visit Sapporo
The most comfortable time to visit Sapporo is generally June to July and September, balancing mild daytime temperatures against the driest stretch of the year. The city has strongly marked seasons and rain concentrates around August, totalling about 694 mm a year.
Travellers who prefer heat should aim for August, when highs average 26°C. August is the month to avoid if rain would spoil your plans — it averages 106 mm, roughly 11× the rainfall of the driest month (February).
Source: OpenWeather historical and statistical weather data. Values are long-term averages, not a forecast — see the Sapporo forecast for what is happening now.