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Kashiwa Weather by Month
Average temperatures, rainfall and humidity for Kashiwa, Japan, month by month, built from OpenWeather’s historical records. Use it to see what a typical Kashiwa month looks like before you travel — then check the live Kashiwa forecast for the days ahead.
Warmest month
August
32°C average high
Coolest month
January
2°C average low
Wettest month
September
155 mm of rain
Driest month
January
25 mm of rain
Average temperature and rainfall in Kashiwa 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 | 2°C | -9°C / 18°C | 25 mm | 57% | 13 km/h |
| February | 11°C | 3°C | -5°C / 23°C | 42 mm | 60% | 14 km/h |
| March | 15°C | 7°C | -3°C / 27°C | 82 mm | 64% | 14 km/h |
| April | 19°C | 11°C | 1°C / 29°C | 108 mm | 67% | 15 km/h |
| May | 24°C | 16°C | 8°C / 34°C | 108 mm | 70% | 14 km/h |
| June | 27°C | 20°C | 13°C / 38°C | 152 mm | 73% | 12 km/h |
| July | 31°C | 24°C | 18°C / 39°C | 108 mm | 76% | 12 km/h |
| August | 32°C | 25°C | 17°C / 40°C | 119 mm | 73% | 13 km/h |
| September | 28°C | 22°C | 12°C / 37°C | 155 mm | 77% | 13 km/h |
| October | 22°C | 16°C | 5°C / 32°C | 116 mm | 71% | 12 km/h |
| November | 17°C | 10°C | -1°C / 27°C | 60 mm | 66% | 11 km/h |
| December | 12°C | 4°C | -6°C / 23°C | 38 mm | 58% | 12 km/h |
Best time to visit Kashiwa
The most comfortable time to visit Kashiwa is generally May to June and October, balancing mild daytime temperatures against the driest stretch of the year. The city has strongly marked seasons and rain concentrates around September, totalling about 1,114 mm a year.
Travellers who prefer heat should aim for August, when highs average 32°C. September is the month to avoid if rain would spoil your plans — it averages 155 mm, roughly 6× the rainfall of the driest month (January).
Source: OpenWeather historical and statistical weather data. Values are long-term averages, not a forecast — see the Kashiwa forecast for what is happening now.
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