Average annual temperature is 13.0 °C
Absolute maximum temperature: 34.2 °C
Absolute minimum temperature: -16.7 °C
Number of sunny days: 197 days
Number of rainy days: 161 days
Number of snow days: 7 days
Look at detailed online map of Sansŏng
* Weather data for Sansŏng 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) | 12.9 | 12.0 | 23.0 | 25.4 | 31.2 | 32.0 | 33.3 | 34.2 | 29.1 | 21.9 | 23.0 | 15.4 |
| Average daytime temperature (°C) | 3.1 | 7.2 | 15.6 | 17.6 | 22.8 | 27.3 | 28.9 | 29.7 | 25.3 | 18.9 | 10.9 | 5.1 |
| Average temperature (°C) | -1.3 | 2.0 | 9.1 | 12.1 | 17.6 | 21.9 | 24.8 | 25.7 | 21.5 | 13.9 | 6.3 | 1.1 |
| Average night temperature (°C) | -5.1 | -1.9 | 3.4 | 7.1 | 12.8 | 17.8 | 21.8 | 22.6 | 18.3 | 9.6 | 2.0 | -2.2 |
| Absolute minimum temperature (°C) | -16.7 | -6.4 | -4.1 | 0.4 | 3.1 | 13.9 | 18.0 | 19.0 | 12.3 | 3.7 | -7.3 | -12.9 |
| 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 | 12.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 10.0 | 10.8 | 12.0 | 13.1 | 14.1 | 14.6 | 14.4 | 13.5 | 12.4 | 11.3 | 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) | 7.5 | 7.7 | 9.2 | 8.5 | 9.0 | 9.8 | 7.8 | 9.6 | 7.4 | 8.8 | 7.9 | 6.8 |
| Precipitation (mm) | 28 | 11 | 46 | 68 | 147 | 218 | 323 | 228 | 195 | 12 | 31 | 97 |
| Sunny days | 24 | 21 | 24 | 15 | 20 | 9 | 6 | 8 | 10 | 21 | 17 | 22 |
| Rainy days | 4 | 5 | 7 | 15 | 11 | 21 | 25 | 23 | 20 | 10 | 12 | 8 |
| Snow days | 3 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 |
The largest precipitation sum in Sansŏng is at