Average annual temperature is 11.5 °C
Absolute maximum temperature: 33.4 °C
Absolute minimum temperature: -17.5 °C
Number of sunny days: 182 days
Number of rainy days: 171 days
Number of snow days: 12 days
Look at detailed online map of Chŏnsan
* Weather data for Chŏnsan North 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) | 9.7 | 8.8 | 19.5 | 23.9 | 27.7 | 31.6 | 32.0 | 33.4 | 30.1 | 23.3 | 21.7 | 14.2 |
| Average daytime temperature (°C) | 1.1 | 5.5 | 12.2 | 16.7 | 21.4 | 25.4 | 28.4 | 28.7 | 25.9 | 19.1 | 9.3 | 3.3 |
| Average temperature (°C) | -3.8 | -0.4 | 5.8 | 11.0 | 16.3 | 21.0 | 24.7 | 25.0 | 21.4 | 13.5 | 4.3 | -1.0 |
| Average night temperature (°C) | -8.1 | -4.4 | 0.6 | 6.5 | 11.8 | 17.1 | 21.8 | 21.7 | 17.6 | 8.9 | 0.1 | -5.1 |
| Absolute minimum temperature (°C) | -17.5 | -7.2 | -5.6 | 0.1 | 5.0 | 13.4 | 18.7 | 15.8 | 11.5 | 2.5 | -7.5 | -14.9 |
| 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 | 13.0 | 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 | 10.1 | 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 | 8.5 | 9.0 | 7.4 | 9.0 | 9.3 | 7.8 | 8.4 | 8.0 | 8.4 | 6.8 | 6.3 |
| Precipitation (mm) | 30 | 4 | 14 | 123 | 186 | 162 | 276 | 253 | 78 | 38 | 82 | 66 |
| Sunny days | 18 | 25 | 25 | 11 | 17 | 7 | 6 | 8 | 10 | 21 | 14 | 20 |
| Rainy days | 6 | 3 | 6 | 19 | 14 | 23 | 25 | 23 | 20 | 10 | 14 | 8 |
| Snow days | 7 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 3 |
The largest precipitation sum in Chŏnsan is at