Average annual temperature is 11.3 °C
Absolute maximum temperature: 32.1 °C
Absolute minimum temperature: -20.2 °C
Number of sunny days: 164 days
Number of rainy days: 179 days
Number of snow days: 22 days
Look at detailed online map of Kŏsajŏn
* Weather data for Kŏsajŏn 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) | 11.9 | 12.9 | 21.3 | 23.2 | 28.4 | 30.8 | 32.1 | 32.1 | 29.1 | 20.0 | 22.1 | 14.4 |
| Average daytime temperature (°C) | 0.1 | 5.5 | 13.1 | 15.8 | 21.3 | 25.2 | 28.4 | 28.7 | 24.8 | 17.1 | 8.5 | 2.3 |
| Average temperature (°C) | -4.0 | 0.3 | 7.0 | 10.4 | 16.3 | 20.5 | 24.2 | 24.4 | 20.5 | 12.2 | 3.9 | -1.4 |
| Average night temperature (°C) | -8.2 | -3.1 | 2.0 | 5.9 | 11.5 | 16.4 | 21.0 | 21.1 | 17.1 | 8.2 | 0.0 | -4.7 |
| Absolute minimum temperature (°C) | -20.2 | -7.9 | -6.7 | -1.1 | 4.2 | 12.7 | 17.8 | 17.4 | 11.4 | 1.4 | -10.4 | -17.2 |
| 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) | 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) | 6.9 | 8.1 | 9.2 | 7.9 | 9.0 | 9.5 | 7.5 | 8.6 | 7.5 | 8.1 | 7.0 | 5.8 |
| Precipitation (mm) | 41 | 4 | 25 | 108 | 126 | 232 | 448 | 306 | 190 | 27 | 108 | 93 |
| Sunny days | 17 | 22 | 21 | 13 | 15 | 6 | 4 | 5 | 8 | 20 | 17 | 16 |
| Rainy days | 3 | 0 | 10 | 17 | 16 | 24 | 27 | 26 | 22 | 11 | 12 | 11 |
| Snow days | 11 | 6 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 4 |
The largest precipitation sum in Kŏsajŏn is at