Average annual temperature is 13.7 °C
Absolute maximum temperature: 35.5 °C
Absolute minimum temperature: -14.9 °C
Number of sunny days: 194 days
Number of rainy days: 163 days
Number of snow days: 8 days
Look at detailed online map of Sejong
* Weather data for Sejong 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) | 13.8 | 12.2 | 25.4 | 27.4 | 32.9 | 35.5 | 34.0 | 34.7 | 30.6 | 22.6 | 23.9 | 18.0 |
| Average daytime temperature (°C) | 3.9 | 7.6 | 16.7 | 20.1 | 25.4 | 29.7 | 29.8 | 31.1 | 26.8 | 19.9 | 11.6 | 6.1 |
| Average temperature (°C) | -1.3 | 1.5 | 9.2 | 13.5 | 19.2 | 23.8 | 25.9 | 26.6 | 22.6 | 14.3 | 6.7 | 1.8 |
| Average night temperature (°C) | -5.8 | -3.1 | 2.9 | 7.6 | 13.6 | 18.8 | 22.7 | 23.0 | 18.9 | 9.4 | 1.8 | -2.1 |
| Absolute minimum temperature (°C) | -14.9 | -6.2 | -5.3 | 1.0 | 4.2 | 14.5 | 19.5 | 16.2 | 12.5 | 4.0 | -6.8 | -12.6 |
| 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 | 12.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 10.0 | 10.9 | 12.0 | 13.1 | 14.1 | 14.6 | 14.4 | 13.5 | 12.4 | 11.3 | 10.2 | 9.7 |
| 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) | 7.3 | 7.8 | 9.1 | 7.7 | 8.3 | 10.2 | 7.4 | 9.1 | 7.3 | 8.5 | 7.1 | 5.4 |
| Precipitation (mm) | 32 | 3 | 26 | 62 | 143 | 130 | 396 | 330 | 293 | 15 | 64 | 95 |
| Sunny days | 19 | 24 | 24 | 13 | 21 | 12 | 4 | 6 | 12 | 23 | 17 | 19 |
| Rainy days | 8 | 4 | 7 | 17 | 10 | 18 | 27 | 25 | 18 | 8 | 13 | 8 |
| Snow days | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 4 |
The best time to visit Sejong during the most sunny months:
The largest precipitation sum in Sejong is at