Average annual temperature is 17.0 °C
Absolute maximum temperature: 35.6 °C
Absolute minimum temperature: -8.8 °C
Number of sunny days: 149 days
Number of rainy days: 210 days
Number of snow days: 6 days
Look at detailed online map of Kotsu
* Weather data for Kotsu 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) | 18.5 | 18.0 | 25.1 | 25.9 | 30.1 | 31.4 | 35.6 | 33.0 | 32.2 | 28.1 | 25.0 | 21.7 |
| Average daytime temperature (°C) | 10.7 | 12.1 | 17.7 | 20.3 | 23.5 | 26.6 | 32.1 | 30.3 | 29.5 | 23.0 | 18.2 | 14.0 |
| Average temperature (°C) | 5.7 | 7.3 | 12.3 | 15.5 | 19.2 | 22.9 | 27.8 | 27.2 | 25.9 | 17.9 | 13.3 | 8.8 |
| Average night temperature (°C) | 1.9 | 3.4 | 7.8 | 11.2 | 15.2 | 19.6 | 24.0 | 25.0 | 23.3 | 14.0 | 9.4 | 4.8 |
| Absolute minimum temperature (°C) | -8.8 | -0.7 | 1.6 | 5.7 | 9.3 | 12.9 | 21.0 | 23.9 | 20.5 | 9.3 | 3.3 | -1.4 |
| 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 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 |
| Daylight mean duration (h) | 10.2 | 11.0 | 12.0 | 13.0 | 13.9 | 14.4 | 14.2 | 13.4 | 12.4 | 11.3 | 10.4 | 9.9 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 | 9.0 |
| Sunshine mean duration (h) | 7.5 | 7.4 | 8.3 | 8.1 | 8.7 | 6.6 | 11.0 | 8.8 | 9.2 | 8.6 | 7.8 | 7.6 |
| Precipitation (mm) | 56 | 43 | 183 | 297 | 280 | 554 | 84 | 726 | 155 | 185 | 108 | 86 |
| Sunny days | 16 | 16 | 12 | 13 | 13 | 6 | 12 | 0 | 4 | 18 | 18 | 21 |
| Rainy days | 11 | 11 | 18 | 17 | 18 | 24 | 19 | 31 | 26 | 13 | 12 | 10 |
| Snow days | 4 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Kotsu during the most sunny months:
The largest precipitation sum in Kotsu is at