Average annual temperature is 14.6 °C
Absolute maximum temperature: 36.7 °C
Absolute minimum temperature: -12.0 °C
Number of sunny days: 207 days
Number of rainy days: 155 days
Number of snow days: 3 days
Look at detailed online map of Sejin
* Weather data for Sejin 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) | 17.3 | 16.3 | 24.9 | 29.0 | 33.2 | 36.2 | 34.8 | 36.7 | 30.6 | 24.6 | 27.1 | 19.4 |
| Average daytime temperature (°C) | 7.2 | 10.5 | 18.7 | 20.2 | 24.2 | 29.6 | 30.3 | 31.4 | 27.3 | 21.9 | 14.6 | 8.7 |
| Average temperature (°C) | 1.0 | 4.0 | 11.0 | 13.8 | 18.5 | 23.6 | 25.9 | 27.0 | 22.9 | 15.2 | 8.4 | 3.4 |
| Average night temperature (°C) | -3.6 | -1.3 | 4.4 | 8.1 | 13.8 | 19.0 | 22.9 | 23.6 | 19.3 | 9.4 | 3.3 | -0.8 |
| Absolute minimum temperature (°C) | -12.0 | -5.3 | -4.2 | 1.7 | 6.9 | 15.1 | 18.7 | 20.8 | 14.4 | 4.7 | -4.1 | -8.0 |
| 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 | 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) | 7.8 | 7.5 | 8.9 | 8.1 | 8.1 | 9.3 | 7.3 | 9.6 | 7.6 | 8.8 | 8.0 | 7.0 |
| Precipitation (mm) | 31 | 27 | 48 | 80 | 164 | 156 | 337 | 339 | 247 | 9 | 55 | 80 |
| Sunny days | 26 | 18 | 22 | 16 | 15 | 13 | 7 | 7 | 12 | 26 | 22 | 23 |
| Rainy days | 4 | 10 | 9 | 14 | 16 | 17 | 24 | 24 | 18 | 5 | 7 | 7 |
| Snow days | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 |
The largest precipitation sum in Sejin is at