Average annual temperature is 11.6 °C
Absolute maximum temperature: 34.5 °C
Absolute minimum temperature: -10.9 °C
Number of sunny days: 76 days
Number of rainy days: 243 days
Number of snow days: 46 days
Look at detailed online map of Oyasu
* Weather data for Oyasu 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) | 8.3 | 8.3 | 17.9 | 23.2 | 27.7 | 27.9 | 32.8 | 34.5 | 33.2 | 22.3 | 22.5 | 13.6 |
| Average daytime temperature (°C) | 0.9 | 1.7 | 9.4 | 14.6 | 18.9 | 23.1 | 27.4 | 31.7 | 26.8 | 17.5 | 11.8 | 5.1 |
| Average temperature (°C) | -1.8 | -1.0 | 4.1 | 9.2 | 13.8 | 19.1 | 23.3 | 26.8 | 22.3 | 12.9 | 8.0 | 2.0 |
| Average night temperature (°C) | -4.2 | -3.2 | -0.1 | 4.8 | 9.6 | 15.8 | 20.0 | 23.1 | 19.1 | 9.4 | 4.9 | -1.2 |
| Absolute minimum temperature (°C) | -10.9 | -8.5 | -5.4 | -3.4 | 1.3 | 10.9 | 15.5 | 20.3 | 10.8 | 3.3 | -3.8 | -7.9 |
| 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 | 14.9 | 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) | 3.9 | 5.0 | 8.2 | 8.4 | 8.6 | 7.7 | 8.5 | 11.4 | 7.5 | 8.0 | 4.9 | 3.4 |
| Precipitation (mm) | 170 | 167 | 98 | 140 | 175 | 149 | 231 | 76 | 185 | 182 | 256 | 202 |
| Sunny days | 0 | 4 | 17 | 11 | 10 | 4 | 6 | 5 | 3 | 7 | 6 | 3 |
| Rainy days | 9 | 13 | 11 | 19 | 21 | 26 | 25 | 26 | 27 | 24 | 22 | 20 |
| Snow days | 22 | 11 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 8 |
The best time to visit Oyasu during the most sunny months:
The largest precipitation sum in Oyasu is at