Average annual temperature is 9.0 °C
Absolute maximum temperature: 35.2 °C
Absolute minimum temperature: -21.5 °C
Number of sunny days: 159 days
Number of rainy days: 175 days
Number of snow days: 31 days
Look at detailed online map of Ōkawa
* Weather data for Ōkawa 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) | 7.3 | 9.6 | 16.4 | 19.4 | 26.5 | 29.0 | 35.2 | 34.7 | 30.2 | 22.9 | 19.5 | 12.3 |
| Average daytime temperature (°C) | -2.3 | -0.5 | 8.4 | 13.3 | 18.3 | 21.9 | 26.8 | 27.5 | 24.4 | 16.7 | 10.3 | 2.0 |
| Average temperature (°C) | -8.1 | -5.4 | 2.7 | 8.3 | 12.4 | 16.9 | 22.0 | 23.7 | 20.1 | 12.0 | 5.9 | -2.7 |
| Average night temperature (°C) | -13.2 | -10.7 | -2.2 | 4.2 | 7.8 | 13.4 | 18.4 | 20.9 | 16.7 | 8.0 | 2.0 | -6.2 |
| Absolute minimum temperature (°C) | -21.5 | -18.8 | -10.7 | -2.8 | 2.4 | 7.1 | 13.3 | 15.3 | 11.5 | 1.9 | -6.8 | -13.3 |
| 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) | 9.5 | 10.5 | 11.9 | 13.4 | 14.6 | 15.3 | 15.0 | 13.9 | 12.5 | 11.1 | 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 | 7.7 | 8.7 | 8.5 | 9.7 | 8.9 | 9.5 | 7.9 | 7.4 | 8.3 | 6.8 | 6.4 |
| Precipitation (mm) | 29 | 48 | 84 | 164 | 86 | 65 | 79 | 102 | 179 | 99 | 124 | 36 |
| Sunny days | 18 | 15 | 18 | 10 | 12 | 11 | 13 | 6 | 8 | 16 | 13 | 19 |
| Rainy days | 5 | 2 | 9 | 20 | 19 | 19 | 18 | 25 | 22 | 15 | 16 | 5 |
| Snow days | 8 | 11 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 7 |
Months with the longest average daylight duration in Ōkawa:
The largest precipitation sum in Ōkawa is at