Average annual temperature is 12.0 °C
Absolute maximum temperature: 34.7 °C
Absolute minimum temperature: -10.3 °C
Number of sunny days: 82 days
Number of rainy days: 240 days
Number of snow days: 43 days
Look at detailed online map of Ōkawaotsu
* Weather data for Ōkawaotsu 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) | 11.7 | 10.9 | 19.7 | 23.3 | 29.5 | 27.2 | 32.9 | 34.7 | 33.2 | 23.7 | 22.5 | 13.8 |
| Average daytime temperature (°C) | 2.3 | 3.1 | 11.3 | 16.3 | 19.8 | 23.7 | 28.9 | 32.4 | 27.1 | 17.9 | 12.9 | 7.4 |
| Average temperature (°C) | -1.2 | -0.4 | 5.4 | 10.0 | 14.2 | 19.2 | 24.0 | 26.4 | 22.4 | 12.7 | 7.7 | 2.8 |
| Average night temperature (°C) | -4.0 | -3.3 | 0.5 | 4.7 | 9.1 | 15.4 | 19.8 | 21.8 | 19.0 | 8.7 | 3.6 | -0.6 |
| Absolute minimum temperature (°C) | -10.3 | -8.5 | -7.1 | -3.5 | 0.6 | 9.6 | 14.8 | 18.7 | 10.9 | 3.5 | -2.7 | -6.6 |
| 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 | 9.6 |
| 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) | 4.1 | 5.5 | 7.9 | 8.1 | 8.6 | 7.8 | 9.9 | 11.6 | 8.0 | 8.3 | 6.0 | 5.1 |
| Precipitation (mm) | 134 | 113 | 71 | 86 | 137 | 265 | 137 | 56 | 151 | 114 | 175 | 105 |
| Sunny days | 3 | 5 | 11 | 14 | 13 | 6 | 1 | 6 | 4 | 6 | 9 | 4 |
| Rainy days | 11 | 8 | 17 | 16 | 18 | 24 | 30 | 25 | 26 | 25 | 20 | 20 |
| Snow days | 17 | 15 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 7 |
The best time to visit Ōkawaotsu during the most sunny months:
The largest precipitation sum in Ōkawaotsu is at