Average annual temperature is 11.6 °C
Absolute maximum temperature: 34.0 °C
Absolute minimum temperature: -12.8 °C
Number of sunny days: 106 days
Number of rainy days: 217 days
Number of snow days: 42 days
Look at detailed online map of Kosaka
* Weather data for Kosaka 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) | 10.9 | 9.8 | 19.7 | 22.4 | 26.9 | 29.2 | 32.1 | 34.0 | 31.5 | 22.6 | 22.4 | 14.1 |
| Average daytime temperature (°C) | 0.9 | 1.5 | 11.3 | 14.7 | 18.6 | 23.4 | 27.3 | 30.9 | 25.8 | 17.9 | 11.6 | 4.1 |
| Average temperature (°C) | -2.2 | -1.4 | 5.6 | 9.8 | 13.5 | 19.0 | 23.6 | 26.4 | 21.5 | 13.3 | 7.9 | 0.7 |
| Average night temperature (°C) | -5.1 | -5.0 | 1.4 | 6.3 | 9.5 | 15.8 | 20.7 | 23.2 | 18.4 | 9.9 | 4.9 | -2.7 |
| Absolute minimum temperature (°C) | -12.8 | -11.6 | -5.0 | 0.1 | 1.5 | 11.0 | 16.0 | 20.8 | 10.9 | 5.0 | -6.9 | -11.7 |
| 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 | 15.0 | 15.0 | 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 | 9.3 |
| 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 | 6.6 | 8.5 | 8.9 | 9.0 | 8.0 | 9.3 | 10.6 | 7.6 | 8.5 | 5.7 | 5.2 |
| Precipitation (mm) | 55 | 62 | 68 | 102 | 112 | 126 | 182 | 86 | 180 | 89 | 117 | 85 |
| Sunny days | 10 | 3 | 18 | 12 | 10 | 7 | 10 | 5 | 3 | 10 | 8 | 10 |
| Rainy days | 6 | 11 | 13 | 18 | 21 | 23 | 21 | 26 | 27 | 21 | 19 | 11 |
| Snow days | 15 | 14 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 | 10 |
The best time to visit Kosaka during the most sunny months:
The largest precipitation sum in Kosaka is at