Average annual temperature is 8.6 °C
Absolute maximum temperature: 31.6 °C
Absolute minimum temperature: -24.0 °C
Number of sunny days: 88 days
Number of rainy days: 208 days
Number of snow days: 69 days
Look at detailed online map of Iwachishi
* Weather data for Iwachishi 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) | 7.0 | 6.9 | 15.3 | 17.4 | 21.9 | 26.1 | 29.5 | 31.6 | 27.7 | 22.0 | 17.0 | 10.9 |
| Average daytime temperature (°C) | -3.1 | -1.2 | 7.5 | 11.7 | 16.7 | 21.5 | 25.5 | 28.4 | 23.5 | 15.7 | 8.5 | 0.9 |
| Average temperature (°C) | -8.3 | -5.4 | 2.4 | 7.2 | 11.7 | 17.0 | 21.4 | 24.5 | 19.3 | 10.8 | 4.6 | -2.9 |
| Average night temperature (°C) | -13.5 | -10.3 | -2.3 | 3.4 | 7.3 | 13.2 | 18.1 | 21.5 | 15.8 | 6.6 | 0.9 | -6.3 |
| Absolute minimum temperature (°C) | -24.0 | -16.9 | -11.4 | -2.8 | -0.6 | 5.3 | 13.5 | 17.0 | 7.8 | -0.8 | -9.8 | -12.4 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.4 | 10.5 | 11.9 | 13.4 | 14.6 | 15.3 | 15.0 | 13.9 | 12.5 | 11.1 | 9.8 | 9.1 |
| Daylight minimum duration (h) | 9.0 | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 6.9 | 7.3 | 8.1 | 8.0 | 9.5 | 9.4 | 9.7 | 8.9 | 7.2 | 7.9 | 6.0 | 5.4 |
| Precipitation (mm) | 30 | 58 | 97 | 173 | 66 | 158 | 158 | 191 | 255 | 132 | 182 | 54 |
| Sunny days | 8 | 4 | 15 | 6 | 9 | 5 | 5 | 3 | 8 | 10 | 7 | 8 |
| Rainy days | 3 | 1 | 12 | 24 | 22 | 25 | 26 | 28 | 22 | 21 | 18 | 6 |
| Snow days | 20 | 23 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 5 | 17 |
Months with the longest average daylight duration in Iwachishi:
The largest precipitation sum in Iwachishi is at