Average annual temperature is 9.5 °C
Absolute maximum temperature: 30.2 °C
Absolute minimum temperature: -22.6 °C
Number of sunny days: 165 days
Number of rainy days: 178 days
Number of snow days: 22 days
Look at detailed online map of Wissŏngnam
* Weather data for Wissŏngnam 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) | 10.1 | 9.2 | 20.2 | 21.2 | 26.7 | 28.6 | 30.1 | 30.2 | 26.4 | 18.5 | 19.6 | 12.5 |
| Average daytime temperature (°C) | -2.2 | 3.1 | 11.0 | 14.0 | 19.5 | 23.0 | 26.0 | 26.6 | 22.6 | 15.0 | 6.3 | 0.3 |
| Average temperature (°C) | -6.2 | -1.7 | 5.5 | 8.7 | 14.8 | 18.6 | 22.3 | 22.7 | 18.9 | 10.9 | 2.1 | -2.9 |
| Average night temperature (°C) | -10.9 | -5.0 | 0.9 | 4.3 | 10.5 | 14.6 | 19.5 | 19.5 | 15.9 | 7.4 | -1.8 | -5.9 |
| Absolute minimum temperature (°C) | -22.6 | -10.1 | -8.8 | -3.2 | 3.4 | 9.7 | 15.8 | 15.6 | 10.0 | 0.5 | -12.6 | -18.9 |
| 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) | 9.9 | 10.8 | 12.0 | 13.2 | 14.2 | 14.7 | 14.4 | 13.6 | 12.4 | 11.2 | 10.2 | 9.6 |
| 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) | 6.9 | 8.1 | 9.3 | 7.8 | 9.0 | 9.5 | 7.5 | 8.8 | 7.4 | 8.3 | 7.1 | 5.7 |
| Precipitation (mm) | 32 | 4 | 29 | 111 | 125 | 268 | 572 | 326 | 225 | 32 | 105 | 100 |
| Sunny days | 19 | 23 | 21 | 14 | 17 | 7 | 4 | 5 | 6 | 18 | 15 | 16 |
| Rainy days | 3 | 1 | 10 | 16 | 14 | 23 | 27 | 26 | 24 | 13 | 13 | 8 |
| Snow days | 9 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 7 |
The largest precipitation sum in Wissŏngnam is at