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Hatsukaichi Weather by Month
Average temperatures, rainfall and humidity for Hatsukaichi, Japan, month by month, built from OpenWeather's historical records. Use it to see what a typical Hatsukaichi month looks like before you travel — then check the live Hatsukaichi forecast for the days ahead.
Warmest month
August
32°C average high
Coolest month
January
3°C average low
Wettest month
June
181 mm of rain
Driest month
January
41 mm of rain
Average temperature and rainfall in Hatsukaichi 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 | 10°C | 3°C | -5°C / 18°C | 41 mm | 70% | 11 km/h |
| February | 10°C | 3°C | -6°C / 25°C | 62 mm | 69% | 11 km/h |
| March | 14°C | 6°C | -1°C / 27°C | 89 mm | 67% | 10 km/h |
| April | 19°C | 11°C | 3°C / 28°C | 123 mm | 66% | 10 km/h |
| May | 23°C | 15°C | 7°C / 34°C | 95 mm | 69% | 8 km/h |
| June | 26°C | 20°C | 14°C / 37°C | 181 mm | 78% | 8 km/h |
| July | 30°C | 24°C | 18°C / 39°C | 132 mm | 78% | 8 km/h |
| August | 32°C | 25°C | 14°C / 41°C | 105 mm | 76% | 8 km/h |
| September | 28°C | 22°C | 14°C / 37°C | 120 mm | 77% | 9 km/h |
| October | 23°C | 16°C | 6°C / 32°C | 72 mm | 72% | 10 km/h |
| November | 17°C | 10°C | 0°C / 28°C | 53 mm | 71% | 10 km/h |
| December | 12°C | 5°C | -4°C / 29°C | 54 mm | 71% | 11 km/h |
Best time to visit Hatsukaichi
The most comfortable time to visit Hatsukaichi is generally May and September to October, balancing mild daytime temperatures against the driest stretch of the year. The city has strongly marked seasons and rain concentrates around June, totalling about 1127 mm a year.
Travellers who prefer heat should aim for August, when highs average 32°C. June is the month to avoid if rain would spoil your plans — it averages 181 mm, roughly 4× the rainfall of January.
Source: OpenWeather historical and statistical weather data. Values are long-term averages, not a forecast — see the Hatsukaichi forecast for what is happening now.