Average annual temperature is 12.1 °C
Absolute maximum temperature: 34.6 °C
Absolute minimum temperature: -23.4 °C
Number of sunny days: 190 days
Number of rainy days: 163 days
Number of snow days: 12 days
Look at detailed online map of Sŏndŭl
* Weather data for Sŏndŭl 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) | 10.6 | 11.9 | 22.5 | 25.6 | 29.1 | 34.6 | 33.9 | 33.6 | 30.2 | 22.4 | 22.9 | 15.3 |
| Average daytime temperature (°C) | 1.4 | 6.8 | 14.9 | 17.7 | 23.1 | 27.4 | 29.8 | 29.6 | 26.2 | 18.7 | 9.5 | 3.8 |
| Average temperature (°C) | -3.5 | 0.4 | 7.3 | 11.6 | 17.1 | 22.1 | 25.5 | 25.6 | 21.6 | 13.0 | 4.5 | -0.6 |
| Average night temperature (°C) | -8.2 | -4.0 | 0.8 | 6.3 | 11.6 | 17.3 | 22.3 | 22.3 | 18.1 | 8.5 | 0.3 | -4.3 |
| Absolute minimum temperature (°C) | -23.4 | -7.3 | -5.1 | -1.2 | 3.1 | 12.1 | 18.6 | 16.5 | 11.7 | 2.4 | -7.7 | -14.6 |
| 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 | 10.2 | 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) | 7.1 | 8.3 | 9.3 | 7.4 | 9.3 | 9.5 | 8.0 | 7.9 | 7.5 | 8.0 | 6.8 | 6.0 |
| Precipitation (mm) | 47 | 1 | 21 | 104 | 142 | 207 | 411 | 378 | 120 | 28 | 84 | 89 |
| Sunny days | 20 | 24 | 25 | 14 | 21 | 7 | 6 | 8 | 12 | 19 | 15 | 19 |
| Rainy days | 4 | 2 | 6 | 16 | 10 | 23 | 25 | 23 | 18 | 12 | 13 | 11 |
| Snow days | 7 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 1 |
The largest precipitation sum in Sŏndŭl is at