Average annual temperature is 12.2 °C
Absolute maximum temperature: 35.2 °C
Absolute minimum temperature: -12.3 °C
Number of sunny days: 75 days
Number of rainy days: 255 days
Number of snow days: 35 days
Look at detailed online map of Ōashizawa
* Weather data for Ōashizawa 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) | 8.1 | 10.1 | 21.3 | 22.5 | 28.0 | 28.3 | 32.7 | 35.2 | 34.3 | 22.6 | 23.8 | 15.6 |
| Average daytime temperature (°C) | 1.8 | 2.8 | 11.5 | 15.1 | 19.1 | 23.8 | 27.8 | 32.8 | 27.7 | 18.3 | 12.5 | 6.0 |
| Average temperature (°C) | -1.0 | -0.2 | 5.4 | 9.8 | 13.9 | 19.4 | 23.5 | 27.5 | 22.8 | 13.4 | 8.6 | 2.7 |
| Average night temperature (°C) | -3.6 | -3.3 | 0.6 | 5.5 | 9.3 | 16.0 | 19.9 | 23.6 | 19.6 | 9.9 | 5.7 | -0.2 |
| Absolute minimum temperature (°C) | -12.3 | -9.0 | -5.8 | -1.2 | 0.9 | 11.2 | 15.0 | 21.0 | 12.5 | 4.8 | -0.7 | -7.4 |
| 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 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.8 | 10.7 | 12.0 | 13.2 | 14.3 | 14.8 | 14.6 | 13.7 | 12.4 | 11.2 | 10.1 | 9.5 |
| 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) | 4.0 | 5.5 | 8.1 | 8.1 | 8.5 | 8.2 | 8.8 | 11.8 | 7.8 | 7.7 | 5.3 | 3.4 |
| Precipitation (mm) | 150 | 101 | 102 | 131 | 209 | 177 | 326 | 75 | 261 | 166 | 255 | 224 |
| Sunny days | 0 | 3 | 17 | 10 | 11 | 6 | 4 | 7 | 2 | 6 | 6 | 3 |
| Rainy days | 18 | 10 | 14 | 20 | 20 | 24 | 27 | 24 | 28 | 25 | 23 | 22 |
| Snow days | 13 | 15 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 6 |
The best time to visit Ōashizawa during the most sunny months:
The largest precipitation sum in Ōashizawa is at