Average annual temperature is 15.6 °C
Absolute maximum temperature: 36.0 °C
Absolute minimum temperature: -6.1 °C
Number of sunny days: 158 days
Number of rainy days: 204 days
Number of snow days: 3 days
Look at detailed online map of Niwa-gun
* Weather data for Niwa-gun 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) | 15.4 | 15.4 | 22.4 | 26.8 | 29.5 | 30.3 | 35.1 | 36.0 | 33.7 | 26.5 | 25.1 | 19.4 |
| Average daytime temperature (°C) | 9.1 | 10.3 | 17.0 | 19.6 | 23.5 | 26.3 | 31.4 | 32.2 | 30.0 | 22.1 | 17.1 | 11.9 |
| Average temperature (°C) | 3.1 | 4.8 | 10.7 | 14.1 | 18.2 | 22.1 | 26.7 | 27.8 | 25.4 | 16.2 | 11.6 | 6.3 |
| Average night temperature (°C) | -1.6 | 0.4 | 5.2 | 9.0 | 13.5 | 18.3 | 22.6 | 24.2 | 21.8 | 11.5 | 7.2 | 1.8 |
| Absolute minimum temperature (°C) | -6.1 | -5.2 | -1.3 | 2.5 | 6.0 | 12.2 | 17.8 | 22.7 | 17.2 | 6.5 | 0.1 | -3.7 |
| 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 | 14.3 | 13.5 | 12.4 | 11.3 | 10.3 | 9.8 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 7.6 | 7.5 | 8.4 | 8.1 | 8.8 | 7.6 | 10.0 | 10.3 | 9.5 | 8.4 | 7.9 | 7.0 |
| Precipitation (mm) | 34 | 73 | 135 | 172 | 240 | 429 | 231 | 220 | 183 | 84 | 99 | 76 |
| Sunny days | 15 | 15 | 17 | 14 | 15 | 8 | 12 | 5 | 8 | 18 | 16 | 15 |
| Rainy days | 14 | 13 | 14 | 16 | 16 | 22 | 19 | 26 | 22 | 13 | 14 | 15 |
| Snow days | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
The largest precipitation sum in Niwa-gun is at