Average annual temperature is 14.4 °C
Absolute maximum temperature: 37.3 °C
Absolute minimum temperature: -6.4 °C
Number of sunny days: 82 days
Number of rainy days: 267 days
Number of snow days: 16 days
Look at detailed online map of Iijima
* Weather data for Iijima 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) | 13.6 | 14.4 | 22.3 | 24.7 | 30.4 | 29.4 | 33.2 | 37.3 | 34.5 | 25.1 | 25.4 | 17.2 |
| Average daytime temperature (°C) | 4.7 | 5.5 | 13.3 | 16.7 | 20.9 | 25.2 | 29.5 | 34.4 | 28.9 | 19.7 | 15.0 | 8.5 |
| Average temperature (°C) | 2.0 | 2.4 | 7.9 | 11.6 | 16.0 | 21.2 | 25.3 | 29.4 | 24.5 | 15.2 | 11.0 | 5.3 |
| Average night temperature (°C) | -0.4 | -0.2 | 3.3 | 7.2 | 11.7 | 17.8 | 21.6 | 24.9 | 21.1 | 11.6 | 7.6 | 2.5 |
| Absolute minimum temperature (°C) | -6.4 | -5.6 | -2.5 | 0.3 | 3.8 | 13.6 | 15.3 | 21.6 | 14.4 | 6.7 | 2.1 | -3.3 |
| 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 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.9 | 10.8 | 12.0 | 13.2 | 14.2 | 14.7 | 14.5 | 13.6 | 12.4 | 11.2 | 10.1 | 9.6 |
| 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) | 4.3 | 4.7 | 7.9 | 7.8 | 8.3 | 8.2 | 9.5 | 11.9 | 7.8 | 7.7 | 5.4 | 3.5 |
| Precipitation (mm) | 179 | 144 | 131 | 115 | 188 | 225 | 190 | 21 | 199 | 231 | 232 | 290 |
| Sunny days | 0 | 2 | 14 | 12 | 9 | 5 | 9 | 8 | 7 | 6 | 7 | 3 |
| Rainy days | 22 | 20 | 17 | 18 | 22 | 25 | 22 | 23 | 23 | 25 | 23 | 27 |
| Snow days | 9 | 6 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
The best time to visit Iijima during the most sunny months:
The largest precipitation sum in Iijima is at