Average annual temperature is 12.6 °C
Absolute maximum temperature: 33.8 °C
Absolute minimum temperature: -17.9 °C
Number of sunny days: 202 days
Number of rainy days: 156 days
Number of snow days: 7 days
Look at detailed online map of Chŏmma
* Weather data for Chŏmma 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) | 12.9 | 12.2 | 22.8 | 24.5 | 31.2 | 32.1 | 33.1 | 33.8 | 28.5 | 21.5 | 23.0 | 15.1 |
| Average daytime temperature (°C) | 2.6 | 6.9 | 15.3 | 17.3 | 22.5 | 26.9 | 28.8 | 29.6 | 25.1 | 18.6 | 10.6 | 4.6 |
| Average temperature (°C) | -1.8 | 1.7 | 8.8 | 11.7 | 17.3 | 21.7 | 24.7 | 25.4 | 21.2 | 13.5 | 5.9 | 0.6 |
| Average night temperature (°C) | -5.4 | -2.2 | 3.3 | 6.7 | 12.5 | 17.5 | 21.6 | 22.2 | 17.9 | 9.2 | 1.6 | -2.7 |
| Absolute minimum temperature (°C) | -17.9 | -7.1 | -4.7 | -0.1 | 4.0 | 13.6 | 17.9 | 18.8 | 11.6 | 2.9 | -8.2 | -13.3 |
| 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) | 10.0 | 10.8 | 12.0 | 13.1 | 14.1 | 14.6 | 14.4 | 13.5 | 12.4 | 11.3 | 10.2 | 9.7 |
| 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) | 7.5 | 7.8 | 9.1 | 8.6 | 8.9 | 9.7 | 7.7 | 9.4 | 7.4 | 8.8 | 7.9 | 6.7 |
| Precipitation (mm) | 26 | 11 | 38 | 72 | 143 | 219 | 399 | 219 | 211 | 15 | 42 | 83 |
| Sunny days | 24 | 21 | 23 | 15 | 20 | 9 | 5 | 7 | 12 | 25 | 18 | 23 |
| Rainy days | 5 | 4 | 8 | 15 | 11 | 21 | 26 | 24 | 18 | 6 | 11 | 7 |
| Snow days | 2 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 |
The largest precipitation sum in Chŏmma is at