Average annual temperature is 9.6 °C
Absolute maximum temperature: 29.6 °C
Absolute minimum temperature: -21.2 °C
Number of sunny days: 159 days
Number of rainy days: 185 days
Number of snow days: 21 days
Look at detailed online map of Suwa-gun
* Weather data for Suwa-gun 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) | 11.4 | 9.0 | 17.1 | 21.7 | 24.3 | 26.3 | 28.6 | 29.6 | 28.3 | 20.6 | 19.0 | 13.5 |
| Average daytime temperature (°C) | 2.7 | 3.9 | 10.3 | 13.6 | 17.1 | 20.6 | 25.4 | 26.4 | 24.4 | 15.1 | 11.0 | 6.4 |
| Average temperature (°C) | -2.9 | -1.5 | 4.8 | 8.0 | 12.2 | 16.3 | 20.8 | 21.4 | 19.3 | 9.8 | 5.6 | 0.9 |
| Average night temperature (°C) | -6.9 | -5.6 | 0.0 | 3.0 | 7.8 | 12.6 | 16.6 | 17.1 | 15.2 | 5.8 | 1.3 | -3.1 |
| Absolute minimum temperature (°C) | -21.2 | -11.5 | -8.7 | -2.9 | -0.5 | 8.4 | 13.7 | 14.5 | 8.0 | -0.5 | -5.7 | -8.7 |
| 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 | 13.0 | 12.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 10.0 | 10.9 | 12.0 | 13.1 | 14.1 | 14.6 | 14.3 | 13.5 | 12.4 | 11.3 | 10.3 | 9.8 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 7.6 | 7.7 | 8.9 | 9.1 | 9.3 | 8.4 | 10.2 | 11.4 | 9.4 | 8.9 | 7.9 | 7.5 |
| Precipitation (mm) | 34 | 67 | 127 | 160 | 207 | 355 | 87 | 70 | 110 | 77 | 99 | 79 |
| Sunny days | 18 | 14 | 14 | 13 | 16 | 8 | 6 | 7 | 8 | 20 | 16 | 19 |
| Rainy days | 4 | 8 | 17 | 17 | 15 | 22 | 25 | 24 | 22 | 11 | 11 | 9 |
| Snow days | 9 | 6 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 3 |
The best time to visit Suwa-gun during the most sunny months:
The largest precipitation sum in Suwa-gun is at