Average annual temperature is 13.1 °C
Absolute maximum temperature: 34.3 °C
Absolute minimum temperature: -11.8 °C
Number of sunny days: 196 days
Number of rainy days: 155 days
Number of snow days: 14 days
Look at detailed online map of Wŏnnamsan
* Weather data for Wŏnnamsan 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) | 12.0 | 9.1 | 22.3 | 24.1 | 26.4 | 29.7 | 30.9 | 34.3 | 30.2 | 22.5 | 21.2 | 15.1 |
| Average daytime temperature (°C) | 2.7 | 4.9 | 11.0 | 15.7 | 20.3 | 23.6 | 27.3 | 28.9 | 25.8 | 19.2 | 11.4 | 5.9 |
| Average temperature (°C) | -0.5 | 1.4 | 6.7 | 11.6 | 16.5 | 20.5 | 24.8 | 25.8 | 22.5 | 15.9 | 8.4 | 2.8 |
| Average night temperature (°C) | -4.2 | -1.6 | 3.0 | 8.3 | 13.4 | 18.1 | 22.8 | 22.9 | 19.7 | 12.1 | 5.1 | -0.4 |
| Absolute minimum temperature (°C) | -11.8 | -5.3 | -1.4 | 3.5 | 6.1 | 14.9 | 20.4 | 18.5 | 14.3 | 7.5 | -2.3 | -8.9 |
| 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) | 7.1 | 8.4 | 9.3 | 8.0 | 8.5 | 9.6 | 7.9 | 9.1 | 7.4 | 8.3 | 6.5 | 4.5 |
| Precipitation (mm) | 30 | 1 | 10 | 103 | 126 | 139 | 376 | 292 | 179 | 15 | 104 | 79 |
| Sunny days | 21 | 27 | 25 | 17 | 20 | 17 | 8 | 9 | 11 | 16 | 12 | 13 |
| Rainy days | 5 | 1 | 6 | 13 | 11 | 13 | 23 | 22 | 19 | 15 | 17 | 10 |
| Snow days | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 8 |
The largest precipitation sum in Wŏnnamsan is at