Average annual temperature is 13.9 °C
Absolute maximum temperature: 34.0 °C
Absolute minimum temperature: -13.5 °C
Number of sunny days: 123 days
Number of rainy days: 224 days
Number of snow days: 18 days
Look at detailed online map of Omotegawa
* Weather data for Omotegawa 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) | 14.9 | 13.7 | 21.9 | 24.9 | 28.7 | 29.1 | 34.0 | 33.3 | 31.5 | 24.0 | 23.6 | 18.7 |
| Average daytime temperature (°C) | 6.3 | 7.8 | 15.1 | 17.6 | 22.0 | 25.3 | 29.4 | 30.5 | 27.9 | 19.7 | 14.8 | 8.9 |
| Average temperature (°C) | 1.7 | 3.0 | 9.1 | 12.1 | 16.6 | 20.5 | 24.8 | 25.8 | 23.2 | 14.4 | 9.9 | 4.6 |
| Average night temperature (°C) | -2.1 | -0.7 | 4.2 | 7.6 | 12.5 | 16.8 | 21.1 | 22.6 | 20.0 | 10.3 | 6.2 | 1.6 |
| Absolute minimum temperature (°C) | -13.5 | -5.5 | -3.5 | 2.1 | 5.8 | 9.8 | 17.4 | 20.2 | 16.0 | 4.5 | -0.7 | -4.3 |
| 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 | 13.0 | 12.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 10.1 | 10.9 | 12.0 | 13.1 | 14.0 | 14.5 | 14.2 | 13.4 | 12.4 | 11.3 | 10.4 | 9.9 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 | 9.0 |
| Sunshine mean duration (h) | 6.1 | 6.1 | 8.0 | 7.6 | 8.5 | 7.3 | 9.3 | 9.2 | 8.8 | 8.3 | 7.4 | 6.0 |
| Precipitation (mm) | 70 | 68 | 77 | 199 | 219 | 244 | 268 | 200 | 81 | 26 | 53 | 67 |
| Sunny days | 8 | 11 | 18 | 15 | 13 | 11 | 4 | 1 | 4 | 17 | 13 | 8 |
| Rainy days | 13 | 15 | 13 | 15 | 18 | 19 | 27 | 30 | 26 | 14 | 16 | 18 |
| Snow days | 10 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 5 |
The largest precipitation sum in Omotegawa is at