Average annual temperature is 14.0 °C
Absolute maximum temperature: 37.7 °C
Absolute minimum temperature: -14.1 °C
Number of sunny days: 194 days
Number of rainy days: 167 days
Number of snow days: 4 days
Look at detailed online map of Yongyŏn
* Weather data for Yongyŏn 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) | 16.4 | 16.2 | 24.9 | 28.4 | 34.3 | 35.1 | 34.9 | 37.7 | 30.6 | 23.1 | 26.7 | 19.2 |
| Average daytime temperature (°C) | 5.5 | 9.4 | 18.1 | 20.0 | 24.0 | 28.9 | 29.8 | 31.3 | 26.6 | 21.1 | 13.5 | 7.5 |
| Average temperature (°C) | 0.1 | 3.2 | 10.7 | 13.7 | 18.2 | 23.0 | 25.6 | 26.7 | 22.4 | 14.5 | 7.4 | 2.3 |
| Average night temperature (°C) | -4.3 | -1.9 | 3.8 | 7.6 | 12.9 | 18.2 | 22.3 | 23.0 | 18.7 | 8.6 | 2.3 | -2.0 |
| Absolute minimum temperature (°C) | -14.1 | -6.6 | -4.5 | 1.6 | 5.6 | 14.9 | 18.0 | 19.6 | 12.8 | 3.9 | -6.1 | -10.8 |
| 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) | 7.8 | 7.3 | 9.2 | 8.4 | 8.4 | 9.6 | 7.8 | 9.3 | 7.3 | 8.8 | 7.9 | 6.9 |
| Precipitation (mm) | 41 | 19 | 66 | 47 | 137 | 184 | 343 | 203 | 202 | 6 | 39 | 83 |
| Sunny days | 24 | 18 | 21 | 15 | 16 | 12 | 5 | 7 | 7 | 22 | 24 | 23 |
| Rainy days | 5 | 9 | 10 | 15 | 15 | 18 | 26 | 24 | 23 | 9 | 6 | 7 |
| Snow days | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
The largest precipitation sum in Yongyŏn is at