Average annual temperature is 15.6 °C
Absolute maximum temperature: 36.9 °C
Absolute minimum temperature: -7.0 °C
Number of sunny days: 142 days
Number of rainy days: 219 days
Number of snow days: 4 days
Look at detailed online map of Koibuchi
* Weather data for Koibuchi 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) | 14.5 | 16.5 | 23.0 | 27.7 | 31.6 | 31.1 | 36.9 | 35.6 | 34.4 | 25.8 | 24.5 | 19.0 |
| Average daytime temperature (°C) | 8.6 | 10.4 | 16.2 | 19.7 | 22.3 | 26.0 | 31.5 | 32.5 | 29.2 | 21.5 | 17.4 | 12.6 |
| Average temperature (°C) | 3.2 | 4.8 | 10.7 | 14.1 | 17.0 | 21.5 | 26.4 | 27.7 | 24.9 | 16.5 | 12.0 | 6.9 |
| Average night temperature (°C) | -0.8 | 0.4 | 6.3 | 9.3 | 12.3 | 17.9 | 22.3 | 24.0 | 21.9 | 12.7 | 8.0 | 2.9 |
| Absolute minimum temperature (°C) | -7.0 | -5.4 | 0.1 | 2.3 | 6.5 | 12.7 | 19.2 | 22.1 | 15.7 | 8.4 | 2.5 | -2.7 |
| 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 | 13.0 | 12.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 10.0 | 10.9 | 12.0 | 13.1 | 14.1 | 14.6 | 14.4 | 13.5 | 12.4 | 11.3 | 10.3 | 9.7 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 12.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 7.3 | 7.7 | 7.9 | 8.8 | 9.1 | 7.4 | 10.2 | 11.1 | 8.3 | 8.0 | 7.2 | 7.3 |
| Precipitation (mm) | 30 | 39 | 127 | 99 | 168 | 351 | 109 | 77 | 275 | 108 | 60 | 37 |
| Sunny days | 18 | 17 | 13 | 16 | 12 | 6 | 7 | 4 | 1 | 15 | 13 | 20 |
| Rainy days | 11 | 9 | 18 | 14 | 19 | 24 | 24 | 27 | 29 | 16 | 17 | 11 |
| Snow days | 2 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Koibuchi during the most sunny months:
The largest precipitation sum in Koibuchi is at