Average annual temperature is 14.1 °C
Absolute maximum temperature: 34.4 °C
Absolute minimum temperature: -12.9 °C
Number of sunny days: 177 days
Number of rainy days: 179 days
Number of snow days: 9 days
Look at detailed online map of Sŏngwŏl-li
* Weather data for Sŏngwŏl-li 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) | 16.0 | 12.9 | 24.1 | 26.7 | 30.9 | 34.1 | 32.3 | 34.4 | 30.3 | 22.7 | 24.3 | 18.2 |
| Average daytime temperature (°C) | 5.3 | 8.7 | 17.0 | 19.2 | 23.4 | 28.6 | 29.0 | 30.6 | 26.9 | 20.1 | 12.9 | 7.8 |
| Average temperature (°C) | 0.4 | 2.7 | 9.8 | 13.1 | 18.2 | 22.7 | 25.6 | 26.4 | 22.7 | 15.0 | 8.3 | 3.8 |
| Average night temperature (°C) | -3.9 | -1.7 | 4.5 | 7.9 | 13.7 | 18.2 | 23.0 | 22.9 | 19.2 | 10.6 | 4.0 | 0.3 |
| Absolute minimum temperature (°C) | -12.9 | -5.4 | -3.6 | 0.4 | 6.6 | 13.1 | 19.5 | 17.8 | 14.1 | 6.2 | -3.8 | -9.8 |
| 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) | 7.1 | 7.1 | 8.6 | 7.3 | 7.5 | 8.7 | 6.3 | 9.5 | 7.3 | 8.3 | 7.1 | 5.7 |
| Precipitation (mm) | 33 | 27 | 50 | 88 | 156 | 189 | 439 | 287 | 169 | 12 | 86 | 86 |
| Sunny days | 21 | 20 | 23 | 14 | 14 | 14 | 2 | 4 | 8 | 23 | 18 | 16 |
| Rainy days | 8 | 8 | 8 | 16 | 17 | 16 | 29 | 27 | 22 | 8 | 11 | 9 |
| Snow days | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 6 |
The largest precipitation sum in Sŏngwŏl-li is at