Average annual temperature is 10.8 °C
Absolute maximum temperature: 33.7 °C
Absolute minimum temperature: -13.8 °C
Number of sunny days: 95 days
Number of rainy days: 217 days
Number of snow days: 53 days
Look at detailed online map of Koike
* Weather data for Koike 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) | 10.5 | 8.8 | 19.3 | 22.4 | 27.8 | 29.2 | 32.5 | 33.7 | 32.9 | 23.1 | 22.1 | 13.1 |
| Average daytime temperature (°C) | 0.1 | 0.9 | 11.0 | 14.6 | 18.6 | 23.4 | 27.7 | 30.9 | 25.5 | 17.4 | 10.8 | 3.3 |
| Average temperature (°C) | -3.4 | -2.3 | 4.8 | 9.0 | 13.2 | 18.7 | 23.2 | 26.1 | 20.9 | 12.3 | 6.9 | -0.2 |
| Average night temperature (°C) | -6.5 | -5.4 | 0.3 | 5.1 | 8.9 | 15.2 | 19.8 | 22.7 | 17.7 | 8.7 | 3.9 | -3.4 |
| Absolute minimum temperature (°C) | -13.8 | -10.4 | -7.8 | -1.0 | 1.3 | 8.0 | 14.5 | 20.4 | 9.1 | 2.7 | -5.5 | -10.8 |
| 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 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.7 | 10.7 | 11.9 | 13.3 | 14.4 | 15.0 | 14.7 | 13.7 | 12.5 | 11.1 | 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) | 6.0 | 6.3 | 8.5 | 9.0 | 9.0 | 8.5 | 9.7 | 10.7 | 7.9 | 8.4 | 5.8 | 5.1 |
| Precipitation (mm) | 58 | 58 | 79 | 88 | 124 | 142 | 154 | 106 | 180 | 83 | 137 | 97 |
| Sunny days | 5 | 5 | 17 | 11 | 8 | 8 | 6 | 8 | 2 | 9 | 7 | 9 |
| Rainy days | 7 | 7 | 13 | 19 | 23 | 22 | 25 | 23 | 28 | 22 | 19 | 9 |
| Snow days | 19 | 16 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 13 |
The best time to visit Koike during the most sunny months:
The largest precipitation sum in Koike is at