Average annual temperature is 11.8 °C
Absolute maximum temperature: 35.7 °C
Absolute minimum temperature: -13.9 °C
Number of sunny days: 73 days
Number of rainy days: 256 days
Number of snow days: 36 days
Look at detailed online map of Kosugiyama
* Weather data for Kosugiyama 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) | 10.3 | 8.7 | 20.8 | 21.9 | 27.5 | 27.9 | 32.1 | 35.7 | 34.6 | 22.4 | 22.9 | 13.8 |
| Average daytime temperature (°C) | 1.5 | 2.0 | 11.7 | 14.7 | 19.3 | 23.7 | 27.4 | 32.8 | 27.1 | 17.9 | 12.0 | 4.9 |
| Average temperature (°C) | -1.8 | -1.4 | 5.1 | 9.4 | 13.8 | 19.3 | 23.4 | 27.7 | 22.4 | 12.9 | 8.1 | 1.6 |
| Average night temperature (°C) | -5.3 | -5.6 | -0.2 | 4.8 | 8.8 | 15.6 | 20.0 | 23.7 | 19.1 | 9.1 | 5.0 | -1.4 |
| Absolute minimum temperature (°C) | -13.9 | -13.1 | -11.5 | -0.6 | 1.1 | 10.0 | 16.0 | 20.0 | 11.1 | 4.1 | -5.1 | -8.9 |
| 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) | 9.7 | 10.7 | 12.0 | 13.3 | 14.4 | 14.9 | 14.6 | 13.7 | 12.5 | 11.2 | 10.0 | 9.4 |
| 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) | 5.3 | 6.1 | 8.6 | 8.4 | 8.9 | 7.9 | 8.5 | 11.8 | 7.6 | 7.7 | 5.2 | 3.8 |
| Precipitation (mm) | 107 | 87 | 108 | 137 | 177 | 247 | 381 | 56 | 274 | 194 | 280 | 164 |
| Sunny days | 1 | 2 | 15 | 10 | 9 | 5 | 2 | 7 | 4 | 8 | 6 | 4 |
| Rainy days | 14 | 13 | 16 | 20 | 22 | 25 | 29 | 24 | 26 | 23 | 23 | 21 |
| Snow days | 16 | 13 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 6 |
The best time to visit Kosugiyama during the most sunny months:
The largest precipitation sum in Kosugiyama is at