Average annual temperature is 13.7 °C
Absolute maximum temperature: 35.7 °C
Absolute minimum temperature: -13.6 °C
Number of sunny days: 200 days
Number of rainy days: 161 days
Number of snow days: 4 days
Look at detailed online map of Sŏsan
* Weather data for Sŏsan 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) | 16.0 | 14.5 | 23.1 | 27.4 | 32.4 | 33.5 | 33.9 | 35.7 | 29.9 | 23.9 | 26.3 | 17.0 |
| Average daytime temperature (°C) | 5.8 | 8.8 | 17.0 | 18.6 | 23.0 | 28.4 | 29.1 | 30.5 | 26.5 | 20.6 | 13.1 | 7.3 |
| Average temperature (°C) | 0.1 | 2.7 | 9.8 | 12.8 | 17.5 | 22.6 | 25.0 | 26.2 | 22.3 | 14.8 | 7.5 | 2.4 |
| Average night temperature (°C) | -4.0 | -1.8 | 3.9 | 7.8 | 13.2 | 18.4 | 22.3 | 23.0 | 19.1 | 9.9 | 3.0 | -1.2 |
| Absolute minimum temperature (°C) | -13.6 | -6.3 | -3.1 | 1.3 | 6.7 | 15.1 | 18.3 | 19.7 | 15.1 | 5.8 | -4.8 | -10.0 |
| 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 | 8.8 | 8.2 | 7.9 | 9.4 | 7.1 | 9.6 | 7.5 | 8.8 | 8.0 | 6.9 |
| Precipitation (mm) | 44 | 27 | 51 | 93 | 155 | 162 | 303 | 354 | 172 | 9 | 73 | 83 |
| Sunny days | 25 | 18 | 21 | 16 | 15 | 13 | 6 | 5 | 10 | 25 | 23 | 23 |
| Rainy days | 5 | 9 | 10 | 14 | 16 | 17 | 25 | 26 | 20 | 6 | 7 | 6 |
| Snow days | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 |
The largest precipitation sum in Sŏsan is at