Average annual temperature is 14.1 °C
Absolute maximum temperature: 35.9 °C
Absolute minimum temperature: -15.0 °C
Number of sunny days: 205 days
Number of rainy days: 153 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) | 12.4 | 14.1 | 24.9 | 26.7 | 33.6 | 35.9 | 34.4 | 35.6 | 31.0 | 22.9 | 25.8 | 17.0 |
| Average daytime temperature (°C) | 4.4 | 8.7 | 17.6 | 19.8 | 25.2 | 29.6 | 30.6 | 31.5 | 27.2 | 20.5 | 12.4 | 6.2 |
| Average temperature (°C) | -0.5 | 2.8 | 10.1 | 13.3 | 19.2 | 24.0 | 26.2 | 27.1 | 22.9 | 14.7 | 7.1 | 1.7 |
| Average night temperature (°C) | -4.7 | -1.9 | 3.5 | 7.4 | 13.8 | 19.1 | 23.0 | 23.5 | 19.4 | 9.9 | 2.4 | -2.4 |
| Absolute minimum temperature (°C) | -15.0 | -5.8 | -2.6 | 1.6 | 5.5 | 15.7 | 19.2 | 18.5 | 14.4 | 4.6 | -6.4 | -11.9 |
| 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 | 10.9 | 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 | 12.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 7.5 | 7.7 | 9.0 | 8.3 | 8.4 | 9.9 | 7.4 | 9.2 | 7.6 | 8.7 | 7.8 | 6.5 |
| Precipitation (mm) | 29 | 10 | 46 | 47 | 145 | 222 | 408 | 307 | 236 | 8 | 47 | 84 |
| Sunny days | 21 | 22 | 24 | 18 | 19 | 12 | 4 | 7 | 13 | 23 | 19 | 23 |
| Rainy days | 6 | 5 | 7 | 12 | 12 | 18 | 27 | 24 | 17 | 8 | 11 | 6 |
| Snow days | 4 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 |
The largest precipitation sum in Sansŏng is at