Average annual temperature is 15.8 °C
Absolute maximum temperature: 36.0 °C
Absolute minimum temperature: -5.3 °C
Number of sunny days: 106 days
Number of rainy days: 254 days
Number of snow days: 5 days
Look at detailed online map of Oshima
* Weather data for Oshima 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) | 15.8 | 12.1 | 19.6 | 20.1 | 24.4 | 28.5 | 32.4 | 36.0 | 33.0 | 24.8 | 24.7 | 19.6 |
| Average daytime temperature (°C) | 6.8 | 7.1 | 12.9 | 15.5 | 19.7 | 24.0 | 28.9 | 33.1 | 28.4 | 20.5 | 15.6 | 10.3 |
| Average temperature (°C) | 4.4 | 4.8 | 9.3 | 12.4 | 16.5 | 21.3 | 26.2 | 29.6 | 25.5 | 17.6 | 13.2 | 8.0 |
| Average night temperature (°C) | 2.0 | 2.4 | 6.1 | 9.5 | 13.7 | 19.0 | 23.7 | 26.6 | 23.1 | 15.0 | 10.7 | 5.6 |
| Absolute minimum temperature (°C) | -5.3 | -1.7 | 1.5 | 6.3 | 7.0 | 16.3 | 20.0 | 23.3 | 19.0 | 9.7 | 3.6 | -1.6 |
| 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) | 9.9 | 10.8 | 12.0 | 13.1 | 14.1 | 14.7 | 14.4 | 13.5 | 12.4 | 11.2 | 10.2 | 9.7 |
| 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) | 5.4 | 5.7 | 8.4 | 8.1 | 8.8 | 8.6 | 9.6 | 11.1 | 8.0 | 8.5 | 6.3 | 4.5 |
| Precipitation (mm) | 168 | 95 | 103 | 176 | 193 | 230 | 179 | 69 | 163 | 138 | 196 | 241 |
| Sunny days | 3 | 5 | 14 | 15 | 14 | 9 | 12 | 14 | 3 | 9 | 5 | 3 |
| Rainy days | 27 | 19 | 17 | 15 | 17 | 21 | 19 | 17 | 27 | 22 | 25 | 28 |
| Snow days | 1 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Oshima during the most sunny months:
The largest precipitation sum in Oshima is at