Average annual temperature is 12.2 °C
Absolute maximum temperature: 34.2 °C
Absolute minimum temperature: -16.9 °C
Number of sunny days: 195 days
Number of rainy days: 157 days
Number of snow days: 13 days
Look at detailed online map of Sŏnam
* Weather data for Sŏnam 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) | 12.2 | 12.8 | 25.2 | 24.6 | 30.7 | 32.0 | 33.1 | 34.2 | 29.6 | 21.7 | 23.3 | 16.7 |
| Average daytime temperature (°C) | 2.5 | 7.3 | 15.5 | 17.9 | 23.4 | 27.0 | 29.3 | 30.1 | 26.0 | 18.8 | 10.3 | 4.4 |
| Average temperature (°C) | -2.5 | 1.0 | 7.8 | 11.6 | 17.3 | 21.6 | 24.9 | 25.5 | 21.3 | 12.5 | 5.0 | -0.1 |
| Average night temperature (°C) | -6.6 | -3.4 | 0.7 | 5.4 | 11.2 | 16.6 | 21.2 | 21.8 | 17.4 | 7.1 | 0.4 | -3.7 |
| Absolute minimum temperature (°C) | -16.9 | -6.5 | -5.6 | -2.1 | 2.3 | 11.4 | 18.0 | 14.4 | 10.7 | 1.7 | -7.8 | -13.6 |
| 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) | 9.9 | 10.8 | 12.0 | 13.2 | 14.2 | 14.7 | 14.4 | 13.6 | 12.4 | 11.2 | 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) | 7.1 | 7.9 | 9.1 | 8.0 | 8.8 | 9.6 | 7.5 | 9.0 | 7.3 | 8.1 | 7.2 | 6.0 |
| Precipitation (mm) | 27 | 3 | 20 | 80 | 128 | 187 | 542 | 319 | 213 | 26 | 57 | 79 |
| Sunny days | 20 | 21 | 22 | 16 | 22 | 10 | 6 | 10 | 12 | 20 | 16 | 20 |
| Rainy days | 5 | 5 | 9 | 14 | 9 | 20 | 25 | 21 | 18 | 11 | 12 | 8 |
| Snow days | 6 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 3 |
The largest precipitation sum in Sŏnam is at