Average annual temperature is 12.9 °C
Absolute maximum temperature: 33.4 °C
Absolute minimum temperature: -15.6 °C
Number of sunny days: 215 days
Number of rainy days: 147 days
Number of snow days: 3 days
Look at detailed online map of Hadŏksan
* Weather data for Hadŏksan 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) | 14.6 | 13.1 | 20.8 | 25.7 | 29.4 | 30.6 | 31.8 | 33.4 | 29.1 | 22.6 | 24.5 | 17.3 |
| Average daytime temperature (°C) | 3.9 | 6.7 | 13.7 | 16.3 | 20.2 | 24.5 | 27.9 | 27.9 | 24.2 | 19.2 | 12.1 | 6.1 |
| Average temperature (°C) | -0.3 | 2.4 | 8.5 | 11.8 | 16.4 | 20.9 | 24.5 | 24.8 | 21.1 | 14.2 | 7.3 | 2.0 |
| Average night temperature (°C) | -4.1 | -1.1 | 4.0 | 7.6 | 12.9 | 17.8 | 21.7 | 22.2 | 18.3 | 10.0 | 2.9 | -1.4 |
| Absolute minimum temperature (°C) | -15.6 | -5.3 | -3.5 | 2.3 | 8.0 | 13.7 | 17.9 | 18.8 | 12.0 | 4.7 | -6.7 | -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 | 10.8 | 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) | 7.6 | 7.5 | 9.0 | 8.9 | 9.0 | 10.3 | 8.6 | 9.6 | 7.3 | 8.7 | 8.0 | 7.2 |
| Precipitation (mm) | 39 | 33 | 60 | 54 | 164 | 150 | 294 | 253 | 238 | 16 | 33 | 147 |
| Sunny days | 25 | 19 | 21 | 17 | 19 | 16 | 8 | 10 | 8 | 23 | 25 | 24 |
| Rainy days | 4 | 8 | 10 | 13 | 12 | 14 | 23 | 21 | 22 | 8 | 5 | 7 |
| Snow days | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Hadŏksan is at