Average annual temperature is 8.1 °C
Absolute maximum temperature: 34.3 °C
Absolute minimum temperature: -17.6 °C
Number of sunny days: 155 days
Number of rainy days: 174 days
Number of snow days: 36 days
Look at detailed online map of Koikakushi
* Weather data for Koikakushi 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) | 4.9 | 6.8 | 15.3 | 17.7 | 24.6 | 27.2 | 34.3 | 33.2 | 28.2 | 22.0 | 17.6 | 9.9 |
| Average daytime temperature (°C) | -3.7 | -2.0 | 6.8 | 12.1 | 17.0 | 20.5 | 25.7 | 26.4 | 23.3 | 15.7 | 9.1 | 0.5 |
| Average temperature (°C) | -8.5 | -6.3 | 1.6 | 7.0 | 11.3 | 16.0 | 21.0 | 22.6 | 19.2 | 11.3 | 5.2 | -3.6 |
| Average night temperature (°C) | -12.5 | -10.6 | -3.0 | 2.8 | 7.0 | 12.7 | 17.6 | 19.9 | 16.2 | 7.9 | 1.8 | -6.9 |
| Absolute minimum temperature (°C) | -17.6 | -17.3 | -10.8 | -4.7 | 0.4 | 6.4 | 12.8 | 13.2 | 10.4 | 2.5 | -6.6 | -13.0 |
| 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 | 14.7 | 15.3 | 15.0 | 13.9 | 12.5 | 11.0 | 9.7 | 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 | 8.0 |
| Sunshine mean duration (h) | 7.4 | 7.4 | 8.6 | 8.4 | 9.7 | 8.1 | 8.9 | 7.1 | 7.5 | 7.8 | 6.6 | 6.6 |
| Precipitation (mm) | 28 | 38 | 88 | 170 | 69 | 88 | 77 | 95 | 189 | 118 | 99 | 43 |
| Sunny days | 20 | 15 | 16 | 11 | 9 | 12 | 14 | 6 | 6 | 15 | 12 | 19 |
| Rainy days | 0 | 3 | 11 | 19 | 22 | 18 | 17 | 25 | 24 | 16 | 15 | 4 |
| Snow days | 11 | 10 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 8 |
Months with the longest average daylight duration in Koikakushi:
The largest precipitation sum in Koikakushi is at