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Ashikaga Weather by Month
Average temperatures, rainfall and humidity for Ashikaga, Japan, month by month, built from OpenWeather’s historical records. Use it to see what a typical Ashikaga month looks like before you travel — then check the live Ashikaga forecast for the days ahead.
Warmest month
August
32°C average high
Coolest month
February
-1°C average low
Wettest month
June
142 mm of rain
Driest month
January
11 mm of rain
Average temperature and rainfall in Ashikaga 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 | 0°C | -14°C / 18°C | 11 mm | 57% | 9 km/h |
| February | 9°C | -1°C | -18°C / 23°C | 35 mm | 56% | 10 km/h |
| March | 14°C | 3°C | -14°C / 26°C | 85 mm | 61% | 9 km/h |
| April | 19°C | 8°C | -4°C / 30°C | 121 mm | 64% | 9 km/h |
| May | 24°C | 14°C | -2°C / 36°C | 82 mm | 65% | 8 km/h |
| June | 26°C | 18°C | 5°C / 41°C | 142 mm | 74% | 7 km/h |
| July | 31°C | 23°C | 14°C / 40°C | 136 mm | 75% | 7 km/h |
| August | 32°C | 24°C | 12°C / 41°C | 115 mm | 75% | 8 km/h |
| September | 28°C | 20°C | 6°C / 38°C | 134 mm | 76% | 7 km/h |
| October | 21°C | 12°C | -5°C / 33°C | 112 mm | 74% | 7 km/h |
| November | 16°C | 7°C | -7°C / 27°C | 34 mm | 68% | 8 km/h |
| December | 11°C | 2°C | -12°C / 23°C | 17 mm | 61% | 9 km/h |
Best time to visit Ashikaga
The most comfortable time to visit Ashikaga 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 June, totalling about 1,023 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 142 mm, roughly 13× the rainfall of the driest month (January).
Source: OpenWeather historical and statistical weather data. Values are long-term averages, not a forecast — see the Ashikaga forecast for what is happening now.