Average annual temperature is 13.7 °C
Absolute maximum temperature: 33.8 °C
Absolute minimum temperature: -8.0 °C
Number of sunny days: 139 days
Number of rainy days: 212 days
Number of snow days: 14 days
Look at detailed online map of Kōshimizu
* Weather data for Kōshimizu 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) | 13.4 | 14.9 | 18.0 | 23.1 | 26.1 | 28.3 | 33.0 | 33.8 | 30.1 | 24.7 | 22.6 | 14.5 |
| Average daytime temperature (°C) | 5.1 | 6.0 | 12.4 | 16.3 | 18.8 | 23.4 | 28.2 | 30.0 | 27.0 | 20.1 | 14.5 | 8.7 |
| Average temperature (°C) | 1.4 | 1.8 | 7.4 | 11.6 | 15.1 | 20.4 | 24.9 | 27.5 | 23.9 | 15.2 | 9.9 | 4.3 |
| Average night temperature (°C) | -1.7 | -1.6 | 3.1 | 7.3 | 11.4 | 17.8 | 21.6 | 25.1 | 21.2 | 11.1 | 6.2 | 0.6 |
| Absolute minimum temperature (°C) | -8.0 | -7.5 | -2.8 | 1.9 | 4.6 | 13.1 | 18.3 | 22.4 | 14.6 | 6.5 | -1.7 | -4.3 |
| 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) | 9.8 | 10.8 | 12.0 | 13.2 | 14.3 | 14.8 | 14.5 | 13.6 | 12.4 | 11.2 | 10.1 | 9.5 |
| 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) | 6.8 | 7.3 | 8.5 | 9.0 | 8.4 | 7.8 | 9.7 | 11.7 | 7.9 | 8.7 | 7.0 | 6.6 |
| Precipitation (mm) | 21 | 60 | 89 | 64 | 145 | 193 | 125 | 66 | 222 | 48 | 79 | 76 |
| Sunny days | 11 | 14 | 20 | 18 | 14 | 5 | 8 | 8 | 4 | 15 | 12 | 10 |
| Rainy days | 13 | 10 | 11 | 12 | 17 | 25 | 23 | 23 | 26 | 16 | 18 | 18 |
| Snow days | 7 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 |
The best time to visit Kōshimizu during the most sunny months:
The largest precipitation sum in Kōshimizu is at