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Hakodate Weather by Month
Average temperatures, rainfall and humidity for Hakodate, Japan, month by month, built from OpenWeather’s historical records. Use it to see what a typical Hakodate month looks like before you travel — then check the live Hakodate forecast for the days ahead.
Warmest month
August
25°C average high
Coolest month
January
-5°C average low
Wettest month
August
91 mm of rain
Driest month
February
18 mm of rain
Average temperature and rainfall in Hakodate 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 | 2°C | -5°C | -16°C / 15°C | 36 mm | 79% | 18 km/h |
| February | 2°C | -5°C | -15°C / 14°C | 18 mm | 77% | 18 km/h |
| March | 6°C | 0°C | -11°C / 17°C | 36 mm | 73% | 17 km/h |
| April | 11°C | 4°C | -3°C / 22°C | 68 mm | 71% | 16 km/h |
| May | 15°C | 9°C | 1°C / 29°C | 65 mm | 79% | 14 km/h |
| June | 19°C | 13°C | 5°C / 27°C | 62 mm | 84% | 12 km/h |
| July | 23°C | 18°C | 9°C / 32°C | 73 mm | 87% | 12 km/h |
| August | 25°C | 20°C | 11°C / 32°C | 91 mm | 83% | 14 km/h |
| September | 23°C | 16°C | 6°C / 30°C | 70 mm | 78% | 14 km/h |
| October | 17°C | 9°C | -1°C / 27°C | 73 mm | 73% | 16 km/h |
| November | 10°C | 3°C | -8°C / 20°C | 72 mm | 73% | 18 km/h |
| December | 4°C | -3°C | -13°C / 15°C | 59 mm | 76% | 19 km/h |
Best time to visit Hakodate
The most comfortable time to visit Hakodate 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 723 mm a year.
Travellers who prefer heat should aim for August, when highs average 25°C. August is the month to avoid if rain would spoil your plans — it averages 91 mm, roughly 5× the rainfall of the driest month (February).
Source: OpenWeather historical and statistical weather data. Values are long-term averages, not a forecast — see the Hakodate forecast for what is happening now.