Average annual temperature is 10.6 °C
Absolute maximum temperature: 33.2 °C
Absolute minimum temperature: -13.1 °C
Number of sunny days: 91 days
Number of rainy days: 221 days
Number of snow days: 53 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) | 10.2 | 8.3 | 19.3 | 21.4 | 26.2 | 27.5 | 33.2 | 33.0 | 30.2 | 23.2 | 21.2 | 12.9 |
| Average daytime temperature (°C) | -0.2 | 0.9 | 9.9 | 14.2 | 18.3 | 22.3 | 26.8 | 29.7 | 24.7 | 17.2 | 11.0 | 3.0 |
| Average temperature (°C) | -3.3 | -1.8 | 4.2 | 9.2 | 12.9 | 18.2 | 22.6 | 25.5 | 20.5 | 12.3 | 7.0 | -0.5 |
| Average night temperature (°C) | -6.9 | -4.9 | -0.8 | 5.3 | 8.3 | 14.9 | 19.1 | 22.0 | 17.3 | 8.3 | 3.6 | -4.2 |
| Absolute minimum temperature (°C) | -13.1 | -10.3 | -10.7 | 0.0 | 1.4 | 9.8 | 14.7 | 19.5 | 8.7 | 1.9 | -6.3 | -12.1 |
| 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 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.6 | 10.7 | 11.9 | 13.3 | 14.4 | 15.0 | 14.8 | 13.8 | 12.5 | 11.1 | 9.9 | 9.3 |
| 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) | 5.4 | 6.4 | 8.6 | 8.9 | 9.0 | 7.8 | 9.4 | 10.3 | 7.4 | 8.2 | 5.4 | 4.9 |
| Precipitation (mm) | 109 | 96 | 73 | 109 | 127 | 145 | 232 | 258 | 157 | 103 | 138 | 99 |
| Sunny days | 2 | 4 | 19 | 11 | 11 | 8 | 5 | 5 | 4 | 10 | 8 | 4 |
| Rainy days | 7 | 11 | 12 | 19 | 20 | 22 | 26 | 26 | 26 | 21 | 19 | 12 |
| Snow days | 22 | 13 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 15 |
The best time to visit Ashizawa during the most sunny months:
The largest precipitation sum in Ashizawa is at