Average annual temperature is 13.2 °C
Absolute maximum temperature: 34.4 °C
Absolute minimum temperature: -16.2 °C
Number of sunny days: 176 days
Number of rainy days: 183 days
Number of snow days: 6 days
Look at detailed online map of Sŏngjo
* Weather data for Sŏngjo 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) | 13.4 | 13.1 | 23.7 | 26.4 | 32.4 | 33.3 | 33.3 | 34.4 | 30.0 | 21.6 | 23.2 | 15.8 |
| Average daytime temperature (°C) | 3.4 | 7.7 | 16.9 | 18.8 | 23.6 | 28.4 | 29.3 | 30.2 | 25.8 | 19.1 | 11.1 | 5.4 |
| Average temperature (°C) | -1.1 | 2.0 | 9.8 | 12.5 | 18.0 | 22.6 | 25.0 | 25.8 | 21.6 | 13.7 | 6.0 | 1.2 |
| Average night temperature (°C) | -5.2 | -2.6 | 3.4 | 6.7 | 12.7 | 17.6 | 21.6 | 22.3 | 18.2 | 8.8 | 1.2 | -2.4 |
| Absolute minimum temperature (°C) | -16.2 | -7.6 | -4.4 | 0.0 | 3.8 | 14.2 | 18.1 | 19.1 | 13.0 | 3.1 | -7.7 | -12.8 |
| 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) | 10.0 | 10.9 | 12.0 | 13.1 | 14.1 | 14.6 | 14.4 | 13.5 | 12.4 | 11.3 | 10.3 | 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) | 7.4 | 7.4 | 9.0 | 8.1 | 8.7 | 9.9 | 7.9 | 9.7 | 7.5 | 8.7 | 8.0 | 6.6 |
| Precipitation (mm) | 27 | 10 | 63 | 54 | 148 | 250 | 384 | 271 | 195 | 10 | 47 | 79 |
| Sunny days | 20 | 20 | 22 | 13 | 19 | 7 | 2 | 6 | 7 | 22 | 18 | 20 |
| Rainy days | 8 | 7 | 9 | 17 | 12 | 23 | 29 | 25 | 23 | 9 | 12 | 9 |
| Snow days | 3 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 |
The largest precipitation sum in Sŏngjo is at