Average annual temperature is 15.0 °C
Absolute maximum temperature: 37.5 °C
Absolute minimum temperature: -6.4 °C
Number of sunny days: 157 days
Number of rainy days: 199 days
Number of snow days: 9 days
Look at detailed online map of Ōmamachō-ōmama
* Weather data for Ōmamachō-ōmama 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) | 13.3 | 15.4 | 21.2 | 28.1 | 31.2 | 31.3 | 37.5 | 36.4 | 31.5 | 25.4 | 24.4 | 17.2 |
| Average daytime temperature (°C) | 6.9 | 8.8 | 15.7 | 19.5 | 22.3 | 25.3 | 31.2 | 31.2 | 28.1 | 20.4 | 15.7 | 10.6 |
| Average temperature (°C) | 2.6 | 4.1 | 10.7 | 13.8 | 17.3 | 21.4 | 26.3 | 26.5 | 24.1 | 15.8 | 11.3 | 5.7 |
| Average night temperature (°C) | -0.7 | 0.5 | 6.6 | 9.1 | 13.1 | 18.0 | 22.3 | 23.4 | 21.2 | 11.9 | 7.8 | 2.0 |
| Absolute minimum temperature (°C) | -6.4 | -3.4 | -1.0 | 3.7 | 6.2 | 12.6 | 19.7 | 21.5 | 14.4 | 8.0 | -1.4 | -3.8 |
| 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) | 10.0 | 10.9 | 12.0 | 13.1 | 14.1 | 14.6 | 14.4 | 13.5 | 12.4 | 11.3 | 10.2 | 9.7 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 12.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 7.6 | 8.3 | 8.4 | 9.2 | 9.0 | 8.0 | 10.1 | 10.4 | 8.8 | 8.8 | 8.0 | 7.7 |
| Precipitation (mm) | 13 | 32 | 90 | 65 | 169 | 282 | 132 | 227 | 231 | 89 | 58 | 24 |
| Sunny days | 18 | 17 | 16 | 16 | 14 | 4 | 7 | 2 | 4 | 16 | 21 | 22 |
| Rainy days | 8 | 8 | 15 | 14 | 17 | 26 | 24 | 29 | 26 | 15 | 9 | 8 |
| Snow days | 5 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
The largest precipitation sum in Ōmamachō-ōmama is at