Average annual temperature is 8.5 °C
Absolute maximum temperature: 32.0 °C
Absolute minimum temperature: -18.2 °C
Number of sunny days: 164 days
Number of rainy days: 163 days
Number of snow days: 38 days
Look at detailed online map of Ōsawa
* Weather data for Ōsawa 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) | 5.1 | 6.6 | 13.4 | 17.1 | 22.7 | 25.7 | 32.0 | 30.5 | 27.4 | 21.6 | 17.9 | 10.6 |
| Average daytime temperature (°C) | -2.8 | -1.4 | 6.9 | 11.7 | 15.9 | 19.4 | 24.6 | 25.8 | 23.2 | 16.0 | 9.8 | 1.6 |
| Average temperature (°C) | -7.5 | -5.6 | 2.0 | 7.1 | 10.9 | 15.6 | 20.6 | 22.6 | 19.6 | 11.8 | 6.0 | -2.5 |
| Average night temperature (°C) | -12.0 | -10.6 | -2.8 | 3.0 | 7.1 | 12.7 | 17.5 | 20.2 | 16.6 | 8.2 | 2.4 | -6.0 |
| Absolute minimum temperature (°C) | -17.6 | -18.2 | -12.3 | -4.7 | 0.6 | 6.9 | 12.3 | 14.3 | 10.6 | 2.3 | -6.0 | -12.4 |
| 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 | 14.7 | 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) | 7.4 | 7.6 | 8.7 | 8.5 | 9.8 | 7.9 | 9.3 | 7.6 | 7.5 | 7.9 | 6.7 | 6.5 |
| Precipitation (mm) | 28 | 38 | 96 | 150 | 70 | 69 | 67 | 86 | 178 | 124 | 91 | 46 |
| Sunny days | 18 | 14 | 17 | 12 | 10 | 10 | 18 | 9 | 10 | 16 | 13 | 17 |
| Rainy days | 2 | 0 | 10 | 18 | 21 | 20 | 13 | 22 | 20 | 15 | 16 | 6 |
| Snow days | 11 | 14 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 8 |
Months with the longest average daylight duration in Ōsawa:
The largest precipitation sum in Ōsawa is at