Average annual temperature is 12.7 °C
Absolute maximum temperature: 34.4 °C
Absolute minimum temperature: -17.6 °C
Number of sunny days: 186 days
Number of rainy days: 166 days
Number of snow days: 13 days
Look at detailed online map of Sŏngmunan
* Weather data for Sŏngmunan 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) | 11.5 | 10.8 | 24.2 | 26.0 | 31.4 | 33.5 | 34.0 | 34.4 | 30.9 | 22.0 | 23.1 | 16.0 |
| Average daytime temperature (°C) | 1.9 | 6.9 | 15.3 | 18.3 | 24.0 | 27.4 | 29.7 | 30.2 | 26.4 | 18.8 | 9.8 | 4.2 |
| Average temperature (°C) | -2.6 | 1.0 | 8.5 | 12.3 | 18.1 | 22.2 | 25.5 | 25.9 | 22.0 | 13.3 | 4.9 | 0.1 |
| Average night temperature (°C) | -6.9 | -3.1 | 2.5 | 6.9 | 12.8 | 17.5 | 22.1 | 22.2 | 18.2 | 8.7 | 0.4 | -3.4 |
| Absolute minimum temperature (°C) | -17.6 | -6.4 | -4.7 | -0.3 | 3.8 | 13.6 | 18.8 | 15.7 | 11.7 | 2.7 | -8.2 | -14.2 |
| 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 | 14.5 | 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 | 8.0 | 9.0 | 7.3 | 8.9 | 9.2 | 7.5 | 8.0 | 7.4 | 7.9 | 6.9 | 5.9 |
| Precipitation (mm) | 49 | 3 | 21 | 97 | 142 | 272 | 448 | 359 | 173 | 31 | 61 | 91 |
| Sunny days | 19 | 23 | 23 | 15 | 19 | 9 | 6 | 7 | 9 | 20 | 17 | 19 |
| Rainy days | 5 | 3 | 8 | 15 | 12 | 21 | 25 | 24 | 21 | 11 | 12 | 9 |
| Snow days | 7 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 3 |
The largest precipitation sum in Sŏngmunan is at