Average annual temperature is 9.9 °C
Absolute maximum temperature: 32.1 °C
Absolute minimum temperature: -21.9 °C
Number of sunny days: 183 days
Number of rainy days: 165 days
Number of snow days: 17 days
Look at detailed online map of Mahyŏn
* Weather data for Mahyŏn 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) | 9.7 | 9.7 | 20.3 | 22.7 | 27.0 | 31.4 | 31.6 | 32.1 | 28.3 | 19.9 | 21.2 | 12.9 |
| Average daytime temperature (°C) | -1.2 | 4.0 | 12.3 | 15.1 | 20.8 | 24.7 | 28.2 | 27.7 | 24.2 | 17.1 | 6.9 | 0.9 |
| Average temperature (°C) | -5.8 | -1.5 | 5.5 | 9.4 | 15.2 | 19.6 | 23.7 | 23.2 | 19.3 | 11.2 | 2.0 | -3.3 |
| Average night temperature (°C) | -10.2 | -5.1 | -0.2 | 4.3 | 10.1 | 14.9 | 20.3 | 19.5 | 15.7 | 6.7 | -2.0 | -6.7 |
| Absolute minimum temperature (°C) | -21.9 | -9.3 | -7.4 | -1.8 | 2.8 | 10.8 | 17.3 | 14.0 | 8.4 | 0.7 | -11.0 | -19.0 |
| 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 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.9 | 10.8 | 12.0 | 13.2 | 14.2 | 14.8 | 14.5 | 13.6 | 12.4 | 11.2 | 10.1 | 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 | 8.3 | 9.5 | 7.4 | 9.4 | 9.8 | 8.4 | 7.8 | 7.7 | 8.3 | 6.5 | 5.7 |
| Precipitation (mm) | 40 | 2 | 15 | 92 | 115 | 203 | 232 | 291 | 100 | 22 | 80 | 81 |
| Sunny days | 19 | 24 | 24 | 13 | 19 | 7 | 7 | 5 | 9 | 21 | 16 | 19 |
| Rainy days | 4 | 0 | 7 | 17 | 12 | 23 | 24 | 26 | 21 | 10 | 13 | 8 |
| Snow days | 8 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 4 |
The largest precipitation sum in Mahyŏn is at