Average annual temperature is 11.6 °C
Absolute maximum temperature: 34.8 °C
Absolute minimum temperature: -14.2 °C
Number of sunny days: 120 days
Number of rainy days: 206 days
Number of snow days: 39 days
Look at detailed online map of Komasawa
* Weather data for Komasawa 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) | 11.6 | 11.6 | 20.1 | 20.1 | 27.8 | 29.1 | 33.1 | 34.8 | 32.3 | 24.1 | 22.7 | 14.7 |
| Average daytime temperature (°C) | 1.4 | 1.8 | 10.8 | 14.4 | 18.2 | 22.0 | 26.5 | 29.9 | 25.5 | 18.2 | 12.0 | 3.9 |
| Average temperature (°C) | -1.8 | -1.3 | 5.5 | 9.9 | 13.5 | 18.5 | 23.1 | 26.8 | 22.1 | 13.6 | 8.2 | 0.5 |
| Average night temperature (°C) | -4.6 | -4.7 | 0.9 | 6.2 | 9.4 | 15.8 | 20.5 | 24.4 | 19.1 | 9.9 | 4.9 | -3.1 |
| Absolute minimum temperature (°C) | -14.2 | -9.1 | -5.5 | -1.4 | 1.3 | 10.6 | 15.5 | 21.7 | 10.8 | 4.7 | -8.1 | -11.3 |
| 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) | 6.4 | 7.0 | 8.6 | 9.1 | 9.3 | 8.0 | 9.7 | 10.5 | 7.5 | 8.5 | 5.9 | 5.8 |
| Precipitation (mm) | 58 | 56 | 70 | 89 | 107 | 103 | 198 | 93 | 143 | 87 | 90 | 68 |
| Sunny days | 7 | 7 | 19 | 12 | 12 | 12 | 10 | 7 | 5 | 11 | 7 | 11 |
| Rainy days | 7 | 11 | 12 | 18 | 19 | 18 | 21 | 24 | 25 | 20 | 20 | 11 |
| Snow days | 17 | 10 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 9 |
The best time to visit Komasawa during the most sunny months:
The largest precipitation sum in Komasawa is at