Average annual temperature is 12.1 °C
Absolute maximum temperature: 32.7 °C
Absolute minimum temperature: -18.0 °C
Number of sunny days: 193 days
Number of rainy days: 166 days
Number of snow days: 6 days
Look at detailed online map of Koejŏn
* Weather data for Koejŏn 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) | 11.6 | 11.8 | 21.9 | 22.6 | 28.1 | 30.7 | 31.7 | 32.7 | 27.9 | 22.8 | 22.6 | 16.2 |
| Average daytime temperature (°C) | 1.9 | 5.0 | 11.9 | 15.1 | 19.7 | 24.0 | 27.2 | 26.4 | 23.1 | 18.7 | 10.7 | 3.9 |
| Average temperature (°C) | -2.3 | 1.1 | 7.9 | 11.4 | 16.2 | 20.6 | 24.4 | 24.0 | 20.4 | 14.5 | 6.5 | 0.4 |
| Average night temperature (°C) | -6.4 | -2.3 | 3.9 | 7.9 | 12.6 | 17.5 | 22.0 | 21.8 | 18.0 | 10.9 | 2.8 | -2.6 |
| Absolute minimum temperature (°C) | -18.0 | -7.7 | -3.9 | 2.3 | 5.3 | 13.9 | 19.5 | 16.7 | 13.0 | 5.7 | -6.9 | -14.9 |
| 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) | 9.8 | 10.8 | 12.0 | 13.2 | 14.2 | 14.8 | 14.5 | 13.6 | 12.4 | 11.2 | 10.1 | 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) | 7.5 | 7.4 | 8.4 | 8.0 | 9.4 | 10.1 | 8.4 | 7.4 | 7.4 | 8.3 | 7.1 | 6.2 |
| Precipitation (mm) | 71 | 26 | 14 | 84 | 105 | 151 | 179 | 446 | 185 | 31 | 82 | 176 |
| Sunny days | 24 | 19 | 22 | 13 | 17 | 12 | 9 | 7 | 12 | 17 | 21 | 20 |
| Rainy days | 4 | 6 | 9 | 17 | 14 | 18 | 22 | 24 | 18 | 14 | 9 | 11 |
| Snow days | 3 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Koejŏn during the most sunny months:
The largest precipitation sum in Koejŏn is at