Average annual temperature is 14.9 °C
Absolute maximum temperature: 34.9 °C
Absolute minimum temperature: -11.0 °C
Number of sunny days: 188 days
Number of rainy days: 173 days
Number of snow days: 4 days
Look at detailed online map of Chŏsan
* Weather data for Chŏsan 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) | 14.6 | 13.4 | 22.1 | 25.1 | 24.3 | 28.5 | 34.0 | 34.9 | 29.6 | 23.9 | 25.7 | 19.4 |
| Average daytime temperature (°C) | 6.1 | 9.4 | 15.2 | 17.1 | 20.8 | 25.1 | 28.8 | 30.6 | 26.8 | 21.7 | 14.8 | 9.3 |
| Average temperature (°C) | 2.3 | 4.9 | 10.4 | 13.4 | 17.2 | 21.6 | 25.3 | 27.1 | 23.5 | 17.1 | 10.3 | 5.4 |
| Average night temperature (°C) | -1.6 | 1.2 | 6.3 | 10.1 | 14.5 | 18.9 | 22.7 | 24.5 | 21.0 | 13.3 | 6.4 | 1.8 |
| Absolute minimum temperature (°C) | -11.0 | -3.3 | -2.5 | 3.9 | 9.9 | 15.9 | 19.8 | 23.2 | 16.0 | 8.8 | -2.3 | -6.6 |
| 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 | 14.2 | 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) | 7.7 | 7.5 | 8.8 | 8.1 | 7.7 | 8.3 | 7.3 | 9.7 | 7.7 | 8.7 | 8.3 | 7.1 |
| Precipitation (mm) | 70 | 47 | 56 | 125 | 236 | 256 | 321 | 263 | 239 | 11 | 49 | 83 |
| Sunny days | 24 | 19 | 20 | 15 | 13 | 12 | 5 | 6 | 9 | 23 | 22 | 20 |
| Rainy days | 6 | 9 | 11 | 15 | 18 | 18 | 26 | 25 | 21 | 8 | 8 | 8 |
| Snow days | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 |
The largest precipitation sum in Chŏsan is at