Average annual temperature is 12.2 °C
Absolute maximum temperature: 36.8 °C
Absolute minimum temperature: -13.4 °C
Number of sunny days: 76 days
Number of rainy days: 251 days
Number of snow days: 38 days
Look at detailed online map of Kosugawa
* Weather data for Kosugawa 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) | 12.1 | 10.3 | 19.0 | 25.7 | 31.4 | 28.4 | 33.6 | 36.8 | 34.4 | 24.0 | 24.4 | 15.9 |
| Average daytime temperature (°C) | 2.7 | 3.5 | 10.6 | 16.4 | 20.5 | 24.2 | 29.2 | 33.4 | 28.1 | 18.4 | 13.4 | 7.0 |
| Average temperature (°C) | -0.5 | 0.2 | 4.4 | 9.7 | 14.4 | 19.4 | 24.1 | 27.0 | 22.8 | 13.1 | 8.1 | 2.5 |
| Average night temperature (°C) | -3.2 | -2.7 | -0.6 | 4.2 | 9.1 | 15.5 | 19.7 | 22.1 | 19.2 | 9.0 | 3.9 | -1.0 |
| Absolute minimum temperature (°C) | -9.0 | -7.4 | -5.2 | -2.6 | 0.6 | 9.8 | 13.9 | 19.0 | 11.5 | 4.9 | -3.3 | -13.4 |
| 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 | 12.0 | 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) | 3.1 | 4.3 | 7.5 | 7.5 | 8.3 | 7.5 | 9.6 | 11.7 | 8.1 | 8.0 | 5.2 | 4.1 |
| Precipitation (mm) | 208 | 166 | 80 | 85 | 147 | 230 | 164 | 79 | 133 | 110 | 237 | 227 |
| Sunny days | 2 | 5 | 12 | 11 | 10 | 5 | 3 | 5 | 5 | 8 | 7 | 3 |
| Rainy days | 11 | 13 | 17 | 18 | 21 | 25 | 28 | 26 | 25 | 23 | 22 | 22 |
| Snow days | 18 | 10 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 6 |
The best time to visit Kosugawa during the most sunny months:
The largest precipitation sum in Kosugawa is at