Average annual temperature is 11.2 °C
Absolute maximum temperature: 34.7 °C
Absolute minimum temperature: -13.6 °C
Number of sunny days: 93 days
Number of rainy days: 219 days
Number of snow days: 53 days
Look at detailed online map of Niwatorijima
* Weather data for Niwatorijima 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) | 11.1 | 9.4 | 21.1 | 22.7 | 27.8 | 29.9 | 32.9 | 34.7 | 32.3 | 23.6 | 22.0 | 13.5 |
| Average daytime temperature (°C) | 0.6 | 1.0 | 10.9 | 14.8 | 18.7 | 23.4 | 27.8 | 30.9 | 25.3 | 17.7 | 11.3 | 3.6 |
| Average temperature (°C) | -2.8 | -2.5 | 5.0 | 9.6 | 13.4 | 18.9 | 23.5 | 26.4 | 21.2 | 13.0 | 7.5 | 0.1 |
| Average night temperature (°C) | -5.6 | -5.8 | 0.7 | 5.7 | 9.4 | 15.7 | 20.3 | 23.4 | 18.4 | 9.7 | 4.4 | -2.9 |
| Absolute minimum temperature (°C) | -13.6 | -12.1 | -10.3 | -0.6 | 1.7 | 10.7 | 15.6 | 20.5 | 11.1 | 4.0 | -5.4 | -11.5 |
| 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 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.7 | 10.7 | 11.9 | 13.3 | 14.4 | 15.0 | 14.7 | 13.7 | 12.5 | 11.1 | 10.0 | 9.3 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 6.4 | 6.9 | 8.6 | 9.0 | 8.8 | 8.2 | 9.6 | 10.5 | 7.4 | 8.6 | 6.0 | 5.6 |
| Precipitation (mm) | 62 | 61 | 71 | 92 | 124 | 143 | 182 | 161 | 173 | 85 | 86 | 85 |
| Sunny days | 8 | 4 | 19 | 9 | 8 | 8 | 6 | 6 | 1 | 9 | 7 | 8 |
| Rainy days | 4 | 5 | 11 | 21 | 23 | 22 | 25 | 25 | 29 | 22 | 20 | 12 |
| Snow days | 19 | 19 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 11 |
The best time to visit Niwatorijima during the most sunny months:
The largest precipitation sum in Niwatorijima is at