Average annual temperature is 14.0 °C
Absolute maximum temperature: 35.3 °C
Absolute minimum temperature: -12.8 °C
Number of sunny days: 168 days
Number of rainy days: 188 days
Number of snow days: 9 days
Look at detailed online map of Sejŏl-li
* Weather data for Sejŏl-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) | 16.2 | 14.2 | 25.2 | 27.2 | 33.1 | 35.3 | 33.4 | 34.6 | 30.4 | 22.7 | 25.0 | 18.5 |
| Average daytime temperature (°C) | 5.5 | 9.2 | 17.8 | 19.8 | 24.2 | 29.2 | 29.1 | 30.5 | 26.9 | 20.0 | 12.9 | 7.8 |
| Average temperature (°C) | 0.0 | 2.7 | 10.0 | 13.2 | 18.4 | 23.0 | 25.2 | 26.2 | 22.4 | 14.5 | 7.7 | 3.4 |
| Average night temperature (°C) | -4.5 | -2.2 | 3.7 | 7.2 | 13.3 | 18.2 | 22.3 | 22.5 | 18.7 | 9.4 | 2.9 | -0.2 |
| Absolute minimum temperature (°C) | -12.8 | -6.0 | -4.7 | 0.2 | 3.4 | 13.9 | 18.1 | 17.5 | 13.6 | 4.7 | -4.4 | -8.8 |
| 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) | 7.3 | 7.2 | 8.8 | 7.5 | 7.8 | 9.2 | 6.7 | 9.7 | 7.5 | 8.5 | 7.5 | 5.9 |
| Precipitation (mm) | 37 | 25 | 70 | 93 | 143 | 235 | 454 | 308 | 183 | 10 | 102 | 98 |
| Sunny days | 21 | 19 | 22 | 12 | 16 | 12 | 4 | 4 | 7 | 22 | 17 | 12 |
| Rainy days | 8 | 9 | 9 | 18 | 15 | 18 | 27 | 27 | 23 | 9 | 13 | 12 |
| Snow days | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 7 |
The largest precipitation sum in Sejŏl-li is at