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Hachinohe Weather by Month
Average temperatures, rainfall and humidity for Hachinohe, Japan, month by month, built from OpenWeather’s historical records. Use it to see what a typical Hachinohe month looks like before you travel — then check the live Hachinohe forecast for the days ahead.
Warmest month
August
27°C average high
Coolest month
January
-2°C average low
Wettest month
August
113 mm of rain
Driest month
February
17 mm of rain
Average temperature and rainfall in Hachinohe 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 | 4°C | -2°C | -11°C / 19°C | 49 mm | 82% | 19 km/h |
| February | 3°C | -2°C | -12°C / 17°C | 17 mm | 80% | 18 km/h |
| March | 7°C | 1°C | -9°C / 22°C | 41 mm | 76% | 16 km/h |
| April | 13°C | 5°C | -8°C / 27°C | 66 mm | 69% | 15 km/h |
| May | 19°C | 10°C | -6°C / 39°C | 68 mm | 71% | 13 km/h |
| June | 22°C | 14°C | 0°C / 46°C | 74 mm | 82% | 12 km/h |
| July | 26°C | 19°C | 13°C / 49°C | 87 mm | 85% | 11 km/h |
| August | 27°C | 21°C | 12°C / 41°C | 113 mm | 83% | 12 km/h |
| September | 24°C | 17°C | 8°C / 34°C | 87 mm | 83% | 12 km/h |
| October | 18°C | 11°C | -1°C / 29°C | 91 mm | 80% | 14 km/h |
| November | 12°C | 6°C | -6°C / 28°C | 78 mm | 80% | 18 km/h |
| December | 6°C | 0°C | -11°C / 18°C | 77 mm | 81% | 19 km/h |
Best time to visit Hachinohe
The most comfortable time to visit Hachinohe 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 848 mm a year.
Travellers who prefer heat should aim for August, when highs average 27°C. August is the month to avoid if rain would spoil your plans — it averages 113 mm, roughly 7× the rainfall of the driest month (February).
Source: OpenWeather historical and statistical weather data. Values are long-term averages, not a forecast — see the Hachinohe forecast for what is happening now.