Average annual temperature is 10.2 °C
Absolute maximum temperature: 31.5 °C
Absolute minimum temperature: -21.9 °C
Number of sunny days: 175 days
Number of rainy days: 165 days
Number of snow days: 25 days
Look at detailed online map of Chaesan
* Weather data for Chaesan South Korea is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 8.7 | 10.4 | 20.7 | 22.6 | 26.8 | 28.9 | 31.5 | 31.5 | 28.3 | 19.5 | 20.8 | 12.9 |
| Average daytime temperature (°C) | -1.0 | 4.5 | 12.3 | 14.6 | 20.2 | 24.1 | 27.7 | 27.8 | 23.9 | 16.4 | 7.8 | 1.4 |
| Average temperature (°C) | -5.5 | -0.9 | 5.9 | 9.2 | 15.2 | 19.5 | 23.5 | 23.4 | 19.4 | 11.0 | 3.0 | -2.5 |
| Average night temperature (°C) | -10.2 | -4.6 | 0.5 | 4.5 | 10.2 | 15.2 | 20.0 | 20.1 | 15.8 | 6.3 | -0.9 | -6.1 |
| Absolute minimum temperature (°C) | -21.9 | -8.9 | -7.9 | -2.8 | 2.1 | 10.9 | 16.3 | 14.1 | 7.2 | 0.4 | -11.2 | -17.9 |
| 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 | 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) | 6.9 | 8.0 | 9.2 | 7.8 | 9.2 | 9.7 | 7.9 | 8.7 | 7.5 | 8.2 | 6.8 | 5.7 |
| Precipitation (mm) | 41 | 3 | 27 | 119 | 142 | 229 | 399 | 295 | 168 | 19 | 96 | 85 |
| Sunny days | 18 | 21 | 21 | 14 | 16 | 7 | 6 | 6 | 9 | 22 | 17 | 18 |
| Rainy days | 3 | 0 | 10 | 15 | 15 | 23 | 25 | 25 | 21 | 9 | 11 | 8 |
| Snow days | 10 | 7 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 5 |
The largest precipitation sum in Chaesan is at