Average annual temperature is 11.2 °C
Absolute maximum temperature: 31.8 °C
Absolute minimum temperature: -11.5 °C
Number of sunny days: 107 days
Number of rainy days: 208 days
Number of snow days: 50 days
Look at detailed online map of Kotaniishi
* Weather data for Kotaniishi 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) | 10.4 | 7.7 | 14.9 | 16.1 | 20.7 | 24.5 | 30.1 | 31.8 | 27.7 | 23.7 | 20.0 | 13.8 |
| Average daytime temperature (°C) | 0.0 | 1.4 | 8.9 | 12.0 | 16.1 | 20.4 | 25.4 | 28.4 | 24.5 | 17.5 | 11.0 | 3.2 |
| Average temperature (°C) | -2.2 | -0.7 | 5.1 | 8.7 | 12.7 | 17.5 | 22.5 | 25.7 | 21.8 | 14.0 | 7.8 | 0.7 |
| Average night temperature (°C) | -4.3 | -2.6 | 1.9 | 5.9 | 9.7 | 15.1 | 20.1 | 23.6 | 19.4 | 11.3 | 5.1 | -1.7 |
| Absolute minimum temperature (°C) | -11.5 | -7.3 | -2.3 | -0.1 | 3.8 | 10.3 | 16.1 | 20.8 | 13.5 | 5.1 | -2.9 | -6.4 |
| 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 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.6 | 10.6 | 11.9 | 13.3 | 14.5 | 15.1 | 14.8 | 13.8 | 12.5 | 11.1 | 9.9 | 9.2 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 14.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 6.7 | 7.3 | 8.7 | 9.1 | 9.5 | 8.9 | 9.8 | 9.7 | 7.4 | 8.2 | 6.0 | 5.3 |
| Precipitation (mm) | 74 | 53 | 53 | 167 | 69 | 118 | 181 | 112 | 170 | 78 | 155 | 77 |
| Sunny days | 7 | 5 | 16 | 11 | 13 | 12 | 6 | 4 | 9 | 11 | 6 | 7 |
| Rainy days | 5 | 8 | 14 | 19 | 18 | 18 | 25 | 27 | 21 | 20 | 22 | 11 |
| Snow days | 19 | 15 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 13 |
The largest precipitation sum in Kotaniishi is at