Average annual temperature is 12.7 °C
Absolute maximum temperature: 34.3 °C
Absolute minimum temperature: -14.9 °C
Number of sunny days: 203 days
Number of rainy days: 157 days
Number of snow days: 5 days
Look at detailed online map of Kosam-ni
* Weather data for Kosam-ni 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) | 14.3 | 13.8 | 22.2 | 27.1 | 30.9 | 33.5 | 33.1 | 34.3 | 29.3 | 23.1 | 24.5 | 15.5 |
| Average daytime temperature (°C) | 4.8 | 8.1 | 16.0 | 17.8 | 22.2 | 27.8 | 28.2 | 29.5 | 25.6 | 19.6 | 12.0 | 6.2 |
| Average temperature (°C) | -0.9 | 1.7 | 8.5 | 11.7 | 16.6 | 21.9 | 24.2 | 25.2 | 21.4 | 13.5 | 6.4 | 1.3 |
| Average night temperature (°C) | -5.1 | -3.1 | 2.0 | 6.0 | 11.5 | 17.1 | 21.4 | 21.8 | 17.9 | 8.3 | 1.9 | -2.4 |
| Absolute minimum temperature (°C) | -14.9 | -7.1 | -4.6 | -0.3 | 4.7 | 13.8 | 17.8 | 17.9 | 13.4 | 4.0 | -5.9 | -10.7 |
| 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) | 7.5 | 7.5 | 8.9 | 8.1 | 7.8 | 9.3 | 6.9 | 9.3 | 7.3 | 8.9 | 7.8 | 6.7 |
| Precipitation (mm) | 35 | 22 | 47 | 73 | 121 | 139 | 356 | 337 | 183 | 6 | 61 | 78 |
| Sunny days | 25 | 20 | 24 | 16 | 16 | 12 | 4 | 7 | 9 | 26 | 22 | 22 |
| Rainy days | 4 | 7 | 7 | 14 | 15 | 18 | 27 | 24 | 21 | 5 | 8 | 7 |
| Snow days | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 |
The largest precipitation sum in Kosam-ni is at