Average annual temperature is 12.9 °C
Absolute maximum temperature: 36.6 °C
Absolute minimum temperature: -12.5 °C
Number of sunny days: 91 days
Number of rainy days: 246 days
Number of snow days: 28 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) | 14.2 | 12.2 | 21.0 | 24.7 | 31.0 | 28.6 | 33.5 | 36.6 | 35.1 | 23.8 | 25.0 | 16.2 |
| Average daytime temperature (°C) | 3.4 | 4.0 | 11.8 | 17.1 | 20.9 | 24.7 | 29.4 | 34.1 | 28.8 | 19.0 | 14.0 | 7.9 |
| Average temperature (°C) | 0.1 | 0.8 | 5.2 | 10.3 | 15.1 | 20.1 | 24.7 | 27.9 | 23.5 | 13.7 | 8.8 | 3.4 |
| Average night temperature (°C) | -2.2 | -1.7 | 0.1 | 4.6 | 9.9 | 16.3 | 20.4 | 22.8 | 20.0 | 9.8 | 4.4 | -0.3 |
| Absolute minimum temperature (°C) | -7.9 | -5.6 | -4.3 | -5.9 | 0.1 | 8.7 | 15.7 | 19.6 | 12.6 | 4.7 | -2.1 | -12.5 |
| 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 | 14.0 | 12.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.9 | 10.8 | 12.0 | 13.2 | 14.2 | 14.7 | 14.4 | 13.6 | 12.4 | 11.2 | 10.2 | 9.7 |
| 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) | 3.4 | 4.2 | 7.5 | 7.5 | 8.3 | 7.5 | 9.5 | 11.7 | 7.9 | 7.7 | 5.4 | 4.2 |
| Precipitation (mm) | 306 | 212 | 132 | 151 | 188 | 288 | 159 | 42 | 189 | 276 | 273 | 290 |
| Sunny days | 2 | 4 | 13 | 11 | 13 | 5 | 7 | 9 | 6 | 8 | 8 | 5 |
| Rainy days | 16 | 14 | 18 | 19 | 18 | 25 | 24 | 22 | 24 | 23 | 22 | 21 |
| Snow days | 13 | 10 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 5 |
The best time to visit Ōsawa during the most sunny months:
The largest precipitation sum in Ōsawa is at