Average annual temperature is 13.9 °C
Absolute maximum temperature: 34.8 °C
Absolute minimum temperature: -10.0 °C
Number of sunny days: 89 days
Number of rainy days: 250 days
Number of snow days: 26 days
Look at detailed online map of Ōkuzushima
* Weather data for Ōkuzushima 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) | 11.0 | 11.2 | 21.1 | 24.4 | 30.3 | 30.3 | 34.1 | 34.8 | 33.9 | 24.3 | 24.8 | 18.9 |
| Average daytime temperature (°C) | 3.9 | 4.6 | 12.7 | 16.8 | 21.4 | 25.2 | 30.3 | 32.7 | 28.5 | 19.2 | 14.8 | 9.0 |
| Average temperature (°C) | 0.8 | 1.5 | 7.3 | 11.6 | 16.1 | 20.8 | 25.5 | 27.6 | 24.1 | 14.7 | 10.5 | 5.0 |
| Average night temperature (°C) | -1.7 | -1.2 | 3.2 | 7.1 | 11.8 | 16.9 | 21.8 | 24.1 | 21.3 | 11.2 | 6.9 | 1.4 |
| Absolute minimum temperature (°C) | -10.0 | -5.3 | -0.8 | 0.3 | 4.0 | 11.4 | 16.8 | 21.5 | 16.3 | 5.9 | -3.5 | -5.9 |
| 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) | 5.2 | 5.8 | 7.7 | 7.8 | 9.0 | 7.7 | 9.5 | 10.8 | 8.2 | 8.2 | 5.9 | 4.5 |
| Precipitation (mm) | 241 | 195 | 179 | 181 | 259 | 324 | 194 | 116 | 205 | 181 | 265 | 270 |
| Sunny days | 4 | 7 | 15 | 13 | 15 | 5 | 4 | 5 | 3 | 8 | 6 | 4 |
| Rainy days | 13 | 13 | 16 | 17 | 16 | 25 | 27 | 26 | 27 | 23 | 24 | 23 |
| Snow days | 14 | 8 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 |
The best time to visit Ōkuzushima during the most sunny months:
The largest precipitation sum in Ōkuzushima is at