Average annual temperature is 16.8 °C
Absolute maximum temperature: 36.4 °C
Absolute minimum temperature: -3.9 °C
Number of sunny days: 161 days
Number of rainy days: 203 days
Number of snow days: 1 day
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) | 14.5 | 17.3 | 23.0 | 25.8 | 29.6 | 29.7 | 36.4 | 35.5 | 35.4 | 25.7 | 24.8 | 20.8 |
| Average daytime temperature (°C) | 8.8 | 10.5 | 15.8 | 18.9 | 21.0 | 25.2 | 30.8 | 32.3 | 29.2 | 21.6 | 18.0 | 13.0 |
| Average temperature (°C) | 5.2 | 6.7 | 12.1 | 15.2 | 17.7 | 22.0 | 26.9 | 28.3 | 25.9 | 18.2 | 14.1 | 9.1 |
| Average night temperature (°C) | 2.4 | 3.6 | 9.1 | 12.3 | 14.9 | 19.6 | 24.0 | 25.5 | 23.5 | 15.2 | 11.1 | 5.8 |
| Absolute minimum temperature (°C) | -3.9 | -0.6 | 3.1 | 6.9 | 10.3 | 15.9 | 21.7 | 24.5 | 20.0 | 11.1 | 6.1 | 0.7 |
| 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) | 10.0 | 10.9 | 12.0 | 13.1 | 14.1 | 14.6 | 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 | 14.0 | 12.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 7.1 | 7.5 | 7.6 | 8.9 | 8.8 | 7.3 | 10.6 | 11.6 | 8.4 | 8.1 | 7.0 | 7.0 |
| Precipitation (mm) | 41 | 60 | 114 | 116 | 154 | 324 | 48 | 55 | 312 | 131 | 89 | 35 |
| Sunny days | 16 | 16 | 14 | 13 | 15 | 10 | 14 | 8 | 5 | 15 | 14 | 21 |
| Rainy days | 14 | 12 | 17 | 17 | 16 | 20 | 17 | 23 | 25 | 16 | 16 | 10 |
| Snow days | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Iijima during the most sunny months:
The largest precipitation sum in Iijima is at