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Ichinomiya Weather by Month
Average temperatures, rainfall and humidity for Ichinomiya, Japan, month by month, built from OpenWeather’s historical records. Use it to see what a typical Ichinomiya month looks like before you travel — then check the live Ichinomiya forecast for the days ahead.
Warmest month
August
34°C average high
Coolest month
January
1°C average low
Wettest month
June
148 mm of rain
Driest month
January
44 mm of rain
Average temperature and rainfall in Ichinomiya 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 | 9°C | 1°C | -9°C / 18°C | 44 mm | 70% | 12 km/h |
| February | 10°C | 2°C | -11°C / 20°C | 62 mm | 67% | 14 km/h |
| March | 15°C | 5°C | -6°C / 26°C | 105 mm | 65% | 12 km/h |
| April | 20°C | 11°C | -2°C / 29°C | 139 mm | 67% | 11 km/h |
| May | 25°C | 15°C | 3°C / 37°C | 105 mm | 67% | 9 km/h |
| June | 28°C | 20°C | 9°C / 38°C | 148 mm | 74% | 8 km/h |
| July | 32°C | 24°C | 17°C / 41°C | 130 mm | 75% | 8 km/h |
| August | 34°C | 26°C | 18°C / 42°C | 126 mm | 71% | 9 km/h |
| September | 30°C | 22°C | 12°C / 39°C | 110 mm | 73% | 9 km/h |
| October | 23°C | 15°C | 0°C / 33°C | 97 mm | 71% | 10 km/h |
| November | 17°C | 9°C | -3°C / 27°C | 56 mm | 68% | 11 km/h |
| December | 12°C | 3°C | -10°C / 21°C | 50 mm | 70% | 11 km/h |
Best time to visit Ichinomiya
The most comfortable time to visit Ichinomiya is generally May and October to November, balancing mild daytime temperatures against the driest stretch of the year. The city has strongly marked seasons and rain concentrates around June, totalling about 1,172 mm a year.
Travellers who prefer heat should aim for August, when highs average 34°C. June is the month to avoid if rain would spoil your plans — it averages 148 mm, roughly 3× the rainfall of the driest month (January).
Source: OpenWeather historical and statistical weather data. Values are long-term averages, not a forecast — see the Ichinomiya forecast for what is happening now.
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