Average annual temperature is 11.7 °C
Absolute maximum temperature: 35.6 °C
Absolute minimum temperature: -10.8 °C
Number of sunny days: 86 days
Number of rainy days: 232 days
Number of snow days: 47 days
Look at detailed online map of Iwakichō
* Weather data for Iwakichō 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) | 9.3 | 9.3 | 21.0 | 21.5 | 26.2 | 29.9 | 33.0 | 35.6 | 30.9 | 22.3 | 21.7 | 12.8 |
| Average daytime temperature (°C) | 0.3 | 1.6 | 10.7 | 14.7 | 19.2 | 24.2 | 27.7 | 31.8 | 26.1 | 17.8 | 11.4 | 3.4 |
| Average temperature (°C) | -2.2 | -0.8 | 5.1 | 9.8 | 14.0 | 19.6 | 23.8 | 27.4 | 21.6 | 13.0 | 7.7 | 0.4 |
| Average night temperature (°C) | -4.7 | -3.1 | 0.6 | 6.0 | 9.5 | 16.0 | 20.5 | 23.9 | 18.0 | 9.4 | 4.5 | -2.6 |
| Absolute minimum temperature (°C) | -10.8 | -9.4 | -4.5 | -1.6 | 2.5 | 11.3 | 14.6 | 21.9 | 10.0 | 4.1 | -4.0 | -9.7 |
| 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 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.6 | 10.7 | 11.9 | 13.3 | 14.4 | 15.0 | 14.8 | 13.8 | 12.5 | 11.1 | 9.9 | 9.3 |
| 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) | 5.0 | 5.8 | 8.3 | 8.4 | 9.7 | 8.5 | 10.0 | 11.4 | 7.9 | 8.1 | 4.9 | 4.1 |
| Precipitation (mm) | 131 | 170 | 102 | 161 | 129 | 158 | 244 | 71 | 119 | 182 | 230 | 128 |
| Sunny days | 1 | 1 | 16 | 8 | 13 | 7 | 5 | 7 | 9 | 12 | 5 | 2 |
| Rainy days | 11 | 13 | 14 | 22 | 18 | 23 | 26 | 24 | 21 | 19 | 23 | 18 |
| Snow days | 19 | 14 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 11 |
The best time to visit Iwakichō during the most sunny months:
The largest precipitation sum in Iwakichō is at