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Kushiro Weather by Month
Average temperatures, rainfall and humidity for Kushiro, Japan, month by month, built from OpenWeather’s historical records. Use it to see what a typical Kushiro month looks like before you travel — then check the live Kushiro forecast for the days ahead.
Warmest month
August
22°C average high
Coolest month
January
-10°C average low
Wettest month
August
97 mm of rain
Driest month
February
7 mm of rain
Average temperature and rainfall in Kushiro 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 | 0°C | -10°C | -24°C / 13°C | 29 mm | 73% | 16 km/h |
| February | -1°C | -9°C | -24°C / 12°C | 7 mm | 74% | 15 km/h |
| March | 4°C | -4°C | -18°C / 14°C | 27 mm | 76% | 15 km/h |
| April | 9°C | 2°C | -7°C / 26°C | 68 mm | 76% | 15 km/h |
| May | 14°C | 6°C | -2°C / 32°C | 67 mm | 81% | 14 km/h |
| June | 17°C | 10°C | 3°C / 28°C | 65 mm | 88% | 12 km/h |
| July | 21°C | 15°C | 8°C / 34°C | 76 mm | 91% | 10 km/h |
| August | 22°C | 17°C | 8°C / 34°C | 97 mm | 91% | 12 km/h |
| September | 20°C | 13°C | 3°C / 31°C | 75 mm | 86% | 12 km/h |
| October | 15°C | 7°C | -5°C / 22°C | 84 mm | 79% | 15 km/h |
| November | 9°C | 1°C | -15°C / 21°C | 60 mm | 75% | 16 km/h |
| December | 2°C | -7°C | -19°C / 13°C | 49 mm | 71% | 16 km/h |
Best time to visit Kushiro
The most comfortable time to visit Kushiro is generally July to 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 704 mm a year.
Travellers who prefer heat should aim for August, when highs average 22°C. August is the month to avoid if rain would spoil your plans — it averages 97 mm, roughly 15× the rainfall of the driest month (February).
Source: OpenWeather historical and statistical weather data. Values are long-term averages, not a forecast — see the Kushiro forecast for what is happening now.
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