Average annual temperature is 14.6 °C
Absolute maximum temperature: 36.1 °C
Absolute minimum temperature: -12.8 °C
Number of sunny days: 199 days
Number of rainy days: 165 days
Number of snow days: 1 day
Look at detailed online map of Chŏlsan
* Weather data for Chŏlsan 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) | 16.6 | 15.7 | 24.7 | 28.5 | 32.3 | 34.7 | 34.0 | 36.1 | 31.1 | 23.6 | 26.1 | 19.3 |
| Average daytime temperature (°C) | 6.7 | 10.2 | 18.1 | 19.8 | 23.8 | 28.9 | 29.6 | 31.2 | 27.1 | 21.5 | 14.4 | 8.7 |
| Average temperature (°C) | 1.1 | 4.3 | 10.9 | 13.8 | 18.3 | 23.1 | 25.7 | 26.9 | 23.1 | 15.7 | 8.6 | 3.6 |
| Average night temperature (°C) | -3.4 | -0.5 | 5.1 | 8.5 | 13.7 | 18.8 | 22.8 | 23.8 | 19.7 | 10.7 | 3.9 | -0.5 |
| Absolute minimum temperature (°C) | -12.8 | -5.1 | -2.9 | 2.0 | 6.7 | 15.0 | 18.7 | 21.8 | 15.7 | 6.0 | -4.5 | -9.1 |
| 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) | 7.8 | 7.6 | 8.9 | 8.0 | 7.9 | 8.9 | 7.1 | 9.4 | 7.5 | 8.6 | 8.1 | 6.9 |
| Precipitation (mm) | 38 | 27 | 71 | 83 | 167 | 173 | 336 | 356 | 270 | 9 | 50 | 72 |
| Sunny days | 26 | 19 | 20 | 16 | 16 | 12 | 5 | 5 | 9 | 24 | 23 | 24 |
| Rainy days | 4 | 9 | 11 | 14 | 15 | 18 | 26 | 26 | 21 | 7 | 7 | 7 |
| Snow days | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Chŏlsan is at