Average annual temperature is 11.9 °C
Absolute maximum temperature: 32.5 °C
Absolute minimum temperature: -17.2 °C
Number of sunny days: 168 days
Number of rainy days: 185 days
Number of snow days: 12 days
Look at detailed online map of Wŏlsŏm
* Weather data for Wŏlsŏm 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) | 13.7 | 13.8 | 20.4 | 24.3 | 28.9 | 31.0 | 32.5 | 32.3 | 28.1 | 21.5 | 24.1 | 16.5 |
| Average daytime temperature (°C) | 2.8 | 6.6 | 14.1 | 16.5 | 20.9 | 26.1 | 27.7 | 28.6 | 24.4 | 18.1 | 10.6 | 4.9 |
| Average temperature (°C) | -1.6 | 0.9 | 7.8 | 10.7 | 15.9 | 20.8 | 23.7 | 24.4 | 20.4 | 12.8 | 5.6 | 0.8 |
| Average night temperature (°C) | -5.4 | -2.8 | 2.6 | 5.6 | 11.5 | 16.4 | 20.8 | 21.3 | 17.1 | 8.4 | 1.4 | -2.5 |
| Absolute minimum temperature (°C) | -17.2 | -8.1 | -4.9 | -0.5 | 4.1 | 11.7 | 16.9 | 17.7 | 12.1 | 3.9 | -8.6 | -13.4 |
| 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 | 14.3 | 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) | 7.5 | 7.6 | 8.9 | 8.1 | 8.1 | 9.6 | 7.0 | 9.2 | 7.5 | 8.9 | 7.7 | 6.3 |
| Precipitation (mm) | 36 | 20 | 42 | 58 | 126 | 146 | 367 | 361 | 185 | 9 | 67 | 101 |
| Sunny days | 23 | 18 | 20 | 14 | 12 | 11 | 2 | 6 | 5 | 21 | 19 | 17 |
| Rainy days | 6 | 5 | 11 | 16 | 19 | 19 | 29 | 25 | 25 | 10 | 10 | 10 |
| Snow days | 2 | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 4 |
The largest precipitation sum in Wŏlsŏm is at