Average annual temperature is 10.6 °C
Absolute maximum temperature: 31.7 °C
Absolute minimum temperature: -21.3 °C
Number of sunny days: 175 days
Number of rainy days: 168 days
Number of snow days: 22 days
Look at detailed online map of Sŏngan
* Weather data for Sŏngan 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 | 11.0 | 21.5 | 22.1 | 28.1 | 29.9 | 31.7 | 31.6 | 27.5 | 20.0 | 21.4 | 14.3 |
| Average daytime temperature (°C) | -0.5 | 4.9 | 12.7 | 15.4 | 20.8 | 24.5 | 27.4 | 28.0 | 23.9 | 16.6 | 7.9 | 1.9 |
| Average temperature (°C) | -4.9 | -0.5 | 6.6 | 9.9 | 15.8 | 19.8 | 23.4 | 23.8 | 19.8 | 11.7 | 3.3 | -1.8 |
| Average night temperature (°C) | -9.4 | -4.0 | 1.3 | 5.1 | 11.0 | 15.7 | 20.4 | 20.6 | 16.5 | 7.7 | -0.9 | -5.1 |
| Absolute minimum temperature (°C) | -21.3 | -8.7 | -7.1 | -2.1 | 4.9 | 10.8 | 16.5 | 16.5 | 10.1 | 0.9 | -11.1 | -17.0 |
| 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 | 9.3 | 8.0 | 9.0 | 9.6 | 7.5 | 9.0 | 7.5 | 8.3 | 7.2 | 5.9 |
| Precipitation (mm) | 31 | 5 | 25 | 118 | 125 | 267 | 553 | 339 | 223 | 31 | 97 | 96 |
| Sunny days | 19 | 23 | 22 | 15 | 16 | 7 | 5 | 7 | 7 | 21 | 17 | 16 |
| Rainy days | 3 | 1 | 9 | 15 | 15 | 23 | 26 | 24 | 23 | 10 | 11 | 8 |
| Snow days | 9 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 7 |
The largest precipitation sum in Sŏngan is at