Average annual temperature is 15.3 °C
Absolute maximum temperature: 34.7 °C
Absolute minimum temperature: -4.8 °C
Number of sunny days: 151 days
Number of rainy days: 212 days
Number of snow days: 2 days
Look at detailed online map of Nishiōi
* Weather data for Nishiōi 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) | 13.1 | 15.8 | 22.3 | 24.0 | 28.5 | 30.3 | 34.7 | 33.7 | 31.5 | 29.2 | 24.2 | 20.4 |
| Average daytime temperature (°C) | 8.3 | 9.7 | 14.8 | 18.4 | 20.8 | 24.7 | 30.1 | 30.9 | 28.6 | 21.1 | 17.1 | 12.1 |
| Average temperature (°C) | 4.0 | 5.5 | 10.4 | 14.0 | 16.6 | 21.1 | 25.7 | 26.2 | 24.2 | 16.0 | 12.0 | 7.1 |
| Average night temperature (°C) | 0.3 | 1.6 | 5.9 | 9.7 | 12.4 | 17.7 | 21.7 | 22.5 | 20.6 | 11.2 | 7.9 | 3.0 |
| Absolute minimum temperature (°C) | -4.8 | -3.8 | -1.6 | 2.1 | 5.2 | 13.1 | 17.7 | 19.9 | 13.8 | 6.4 | 1.7 | -2.4 |
| 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) | 7.0 | 6.9 | 8.0 | 8.7 | 8.4 | 7.0 | 9.7 | 10.8 | 9.4 | 8.7 | 7.5 | 7.5 |
| Precipitation (mm) | 40 | 89 | 171 | 175 | 244 | 429 | 65 | 256 | 172 | 140 | 79 | 64 |
| Sunny days | 12 | 14 | 16 | 10 | 11 | 6 | 16 | 6 | 9 | 13 | 16 | 22 |
| Rainy days | 18 | 13 | 15 | 20 | 20 | 24 | 15 | 25 | 21 | 18 | 14 | 9 |
| Snow days | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Nishiōi during the most sunny months:
The largest precipitation sum in Nishiōi is at