Average annual temperature is 12.8 °C
Absolute maximum temperature: 36.2 °C
Absolute minimum temperature: -8.8 °C
Number of sunny days: 75 days
Number of rainy days: 265 days
Number of snow days: 25 days
Look at detailed online map of Ashizawa
* Weather data for Ashizawa Japan is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 8.9 | 11.6 | 21.1 | 24.9 | 30.5 | 29.4 | 33.1 | 36.2 | 34.1 | 23.5 | 22.8 | 15.4 |
| Average daytime temperature (°C) | 2.6 | 3.5 | 11.9 | 16.6 | 20.1 | 24.6 | 28.8 | 33.0 | 28.2 | 18.8 | 13.4 | 7.1 |
| Average temperature (°C) | -0.1 | 0.4 | 5.7 | 10.6 | 14.6 | 20.0 | 24.3 | 27.7 | 23.3 | 13.7 | 8.9 | 3.5 |
| Average night temperature (°C) | -2.4 | -2.4 | 1.1 | 5.9 | 9.9 | 16.4 | 20.5 | 23.6 | 19.9 | 9.5 | 5.6 | 0.7 |
| Absolute minimum temperature (°C) | -8.8 | -7.1 | -4.8 | 0.2 | 2.0 | 10.9 | 15.5 | 20.9 | 12.4 | 5.7 | -1.8 | -4.8 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.8 | 10.8 | 12.0 | 13.2 | 14.3 | 14.8 | 14.6 | 13.6 | 12.4 | 11.2 | 10.1 | 9.5 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 4.0 | 5.3 | 8.1 | 8.6 | 8.5 | 7.9 | 9.2 | 11.6 | 7.8 | 8.1 | 5.3 | 3.3 |
| Precipitation (mm) | 163 | 121 | 69 | 120 | 186 | 178 | 164 | 46 | 191 | 112 | 247 | 224 |
| Sunny days | 1 | 3 | 16 | 14 | 11 | 4 | 3 | 5 | 4 | 5 | 5 | 4 |
| Rainy days | 17 | 15 | 15 | 16 | 20 | 26 | 28 | 26 | 26 | 26 | 25 | 25 |
| Snow days | 13 | 10 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 |
The best time to visit Ashizawa during the most sunny months:
The largest precipitation sum in Ashizawa is at