Average annual temperature is 15.9 °C
Absolute maximum temperature: 35.7 °C
Absolute minimum temperature: -5.2 °C
Number of sunny days: 102 days
Number of rainy days: 255 days
Number of snow days: 8 days
Look at detailed online map of Kumagawa
* Weather data for Kumagawa 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) | 15.5 | 15.8 | 23.2 | 25.9 | 31.0 | 31.7 | 35.3 | 35.7 | 33.9 | 25.2 | 25.8 | 19.7 |
| Average daytime temperature (°C) | 7.1 | 8.0 | 14.3 | 17.8 | 21.6 | 25.5 | 31.1 | 32.4 | 29.8 | 20.8 | 16.7 | 11.5 |
| Average temperature (°C) | 3.9 | 4.8 | 10.3 | 13.4 | 17.5 | 21.8 | 27.0 | 28.5 | 25.7 | 17.1 | 12.7 | 7.8 |
| Average night temperature (°C) | 1.4 | 1.8 | 6.7 | 10.0 | 14.2 | 18.7 | 23.8 | 25.7 | 22.8 | 13.9 | 9.5 | 4.7 |
| Absolute minimum temperature (°C) | -4.4 | -5.2 | -1.0 | 4.5 | 7.4 | 12.9 | 20.2 | 23.6 | 16.8 | 8.5 | 3.4 | -0.8 |
| 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) | 10.1 | 10.9 | 12.0 | 13.1 | 14.0 | 14.5 | 14.3 | 13.5 | 12.4 | 11.3 | 10.3 | 9.8 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 5.0 | 5.0 | 7.9 | 7.8 | 8.5 | 7.1 | 9.5 | 10.0 | 9.1 | 8.4 | 7.2 | 6.4 |
| Precipitation (mm) | 201 | 120 | 147 | 256 | 288 | 313 | 207 | 141 | 117 | 125 | 153 | 140 |
| Sunny days | 3 | 5 | 16 | 14 | 13 | 7 | 8 | 6 | 5 | 11 | 9 | 5 |
| Rainy days | 24 | 19 | 15 | 16 | 18 | 23 | 23 | 25 | 25 | 20 | 21 | 26 |
| Snow days | 4 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Kumagawa during the most sunny months:
The largest precipitation sum in Kumagawa is at