Average annual temperature is 14.4 °C
Absolute maximum temperature: 39.2 °C
Absolute minimum temperature: -6.2 °C
Number of sunny days: 104 days
Number of rainy days: 243 days
Number of snow days: 18 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) | 16.2 | 14.6 | 24.4 | 24.9 | 30.1 | 29.2 | 33.6 | 39.2 | 34.8 | 24.8 | 26.7 | 17.3 |
| Average daytime temperature (°C) | 5.6 | 6.4 | 13.9 | 16.7 | 21.0 | 25.4 | 29.6 | 35.3 | 29.1 | 19.9 | 15.3 | 8.7 |
| Average temperature (°C) | 2.1 | 2.6 | 7.7 | 11.2 | 15.8 | 21.0 | 25.5 | 29.7 | 24.6 | 15.3 | 10.9 | 5.1 |
| Average night temperature (°C) | -0.8 | -0.7 | 2.5 | 6.4 | 11.0 | 17.4 | 21.7 | 24.9 | 21.3 | 11.7 | 7.4 | 2.1 |
| Absolute minimum temperature (°C) | -6.2 | -6.0 | -3.0 | -0.6 | 4.1 | 12.4 | 15.1 | 22.0 | 14.1 | 7.7 | 2.5 | -3.9 |
| 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 | 14.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.9 | 10.8 | 12.0 | 13.2 | 14.2 | 14.7 | 14.5 | 13.6 | 12.4 | 11.2 | 10.2 | 9.6 |
| 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) | 4.4 | 5.0 | 7.8 | 7.9 | 8.2 | 7.9 | 9.4 | 11.9 | 7.7 | 7.6 | 5.8 | 3.7 |
| Precipitation (mm) | 151 | 121 | 100 | 96 | 181 | 216 | 167 | 23 | 216 | 206 | 198 | 273 |
| Sunny days | 2 | 6 | 14 | 14 | 12 | 8 | 12 | 11 | 5 | 7 | 9 | 4 |
| Rainy days | 19 | 15 | 17 | 16 | 19 | 22 | 19 | 20 | 25 | 24 | 21 | 26 |
| Snow days | 10 | 7 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
The best time to visit Koike during the most sunny months:
The largest precipitation sum in Koike is at