Average annual temperature is 12.3 °C
Absolute maximum temperature: 35.8 °C
Absolute minimum temperature: -11.9 °C
Number of sunny days: 74 days
Number of rainy days: 254 days
Number of snow days: 37 days
Look at detailed online map of Itaminai
* Weather data for Itaminai 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) | 10.6 | 9.5 | 21.5 | 23.2 | 28.1 | 28.5 | 32.6 | 35.8 | 34.5 | 22.9 | 23.6 | 14.4 |
| Average daytime temperature (°C) | 1.7 | 2.4 | 12.0 | 15.5 | 20.1 | 24.5 | 28.0 | 33.1 | 27.7 | 18.3 | 12.5 | 5.5 |
| Average temperature (°C) | -1.6 | -0.9 | 5.6 | 10.2 | 14.6 | 20.0 | 24.0 | 28.2 | 23.0 | 13.4 | 8.5 | 2.0 |
| Average night temperature (°C) | -5.1 | -4.3 | 0.6 | 5.7 | 9.9 | 16.4 | 20.6 | 24.3 | 19.6 | 9.7 | 5.2 | -1.3 |
| Absolute minimum temperature (°C) | -11.9 | -10.6 | -6.6 | 0.0 | 1.6 | 10.7 | 15.8 | 20.6 | 11.1 | 4.4 | -5.0 | -7.4 |
| 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) | 9.7 | 10.7 | 12.0 | 13.2 | 14.3 | 14.9 | 14.6 | 13.7 | 12.5 | 11.2 | 10.0 | 9.4 |
| 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) | 4.7 | 5.7 | 8.4 | 8.4 | 8.9 | 7.9 | 8.6 | 11.6 | 7.4 | 7.8 | 5.1 | 3.0 |
| Precipitation (mm) | 120 | 106 | 107 | 141 | 175 | 247 | 328 | 71 | 255 | 203 | 305 | 187 |
| Sunny days | 0 | 5 | 18 | 10 | 12 | 5 | 1 | 5 | 3 | 7 | 5 | 3 |
| Rainy days | 15 | 9 | 13 | 20 | 19 | 25 | 30 | 26 | 27 | 24 | 24 | 22 |
| Snow days | 16 | 14 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 6 |
The best time to visit Itaminai during the most sunny months:
The largest precipitation sum in Itaminai is at