Average annual temperature is 8.6 °C
Absolute maximum temperature: 31.1 °C
Absolute minimum temperature: -14.9 °C
Number of sunny days: 170 days
Number of rainy days: 161 days
Number of snow days: 34 days
Look at detailed online map of Ōinosawa
* Weather data for Ōinosawa 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) | 4.5 | 5.2 | 12.4 | 15.8 | 21.6 | 24.9 | 31.1 | 30.0 | 27.1 | 20.9 | 17.9 | 10.8 |
| Average daytime temperature (°C) | -2.9 | -1.6 | 6.2 | 11.1 | 15.0 | 18.5 | 23.8 | 25.2 | 22.9 | 15.9 | 9.9 | 1.8 |
| Average temperature (°C) | -6.7 | -4.9 | 2.0 | 7.1 | 10.7 | 15.2 | 20.2 | 22.4 | 19.8 | 12.3 | 6.4 | -1.8 |
| Average night temperature (°C) | -10.2 | -8.5 | -1.8 | 3.5 | 7.2 | 12.7 | 17.6 | 20.3 | 17.1 | 9.0 | 3.1 | -4.8 |
| Absolute minimum temperature (°C) | -14.5 | -14.9 | -8.5 | -3.4 | 2.1 | 6.6 | 13.3 | 14.7 | 12.1 | 3.2 | -5.4 | -9.8 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.4 | 10.5 | 11.9 | 13.4 | 14.6 | 15.3 | 15.0 | 13.9 | 12.5 | 11.0 | 9.8 | 9.1 |
| Daylight minimum duration (h) | 9.0 | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 7.5 | 7.6 | 8.8 | 8.6 | 9.9 | 8.2 | 9.6 | 7.8 | 7.6 | 8.0 | 6.7 | 6.6 |
| Precipitation (mm) | 25 | 38 | 96 | 147 | 68 | 59 | 78 | 85 | 182 | 112 | 84 | 52 |
| Sunny days | 18 | 16 | 17 | 12 | 12 | 10 | 18 | 8 | 11 | 17 | 13 | 18 |
| Rainy days | 3 | 1 | 10 | 18 | 19 | 20 | 13 | 23 | 19 | 14 | 16 | 5 |
| Snow days | 10 | 11 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 8 |
Months with the longest average daylight duration in Ōinosawa:
The largest precipitation sum in Ōinosawa is at