Average annual temperature is 11.4 °C
Absolute maximum temperature: 32.9 °C
Absolute minimum temperature: -18.9 °C
Number of sunny days: 189 days
Number of rainy days: 156 days
Number of snow days: 20 days
Look at detailed online map of Chwap’yŏn
* Weather data for Chwap’yŏn 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) | 11.6 | 12.4 | 23.0 | 23.3 | 29.6 | 31.2 | 32.6 | 32.9 | 28.3 | 21.0 | 22.6 | 15.6 |
| Average daytime temperature (°C) | 1.2 | 6.3 | 14.2 | 16.6 | 22.2 | 25.8 | 28.3 | 29.1 | 25.0 | 17.8 | 9.2 | 3.2 |
| Average temperature (°C) | -3.3 | 0.4 | 7.3 | 10.8 | 16.5 | 20.7 | 24.1 | 24.6 | 20.5 | 11.9 | 4.1 | -1.0 |
| Average night temperature (°C) | -7.2 | -3.3 | 1.3 | 5.5 | 11.1 | 16.1 | 20.7 | 21.1 | 16.9 | 7.2 | -0.3 | -4.4 |
| Absolute minimum temperature (°C) | -18.9 | -6.9 | -5.9 | -1.4 | 3.9 | 11.0 | 17.1 | 14.9 | 10.2 | 0.8 | -9.5 | -15.4 |
| 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 | 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 | 14.4 | 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) | 7.0 | 8.1 | 9.2 | 8.1 | 9.0 | 9.7 | 7.5 | 9.1 | 7.4 | 8.3 | 7.2 | 5.9 |
| Precipitation (mm) | 32 | 4 | 23 | 97 | 122 | 191 | 506 | 320 | 218 | 30 | 74 | 82 |
| Sunny days | 18 | 24 | 23 | 15 | 19 | 9 | 5 | 9 | 12 | 20 | 18 | 17 |
| Rainy days | 4 | 0 | 8 | 15 | 12 | 21 | 26 | 22 | 18 | 11 | 10 | 9 |
| Snow days | 9 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 5 |
The largest precipitation sum in Chwap’yŏn is at