Average annual temperature is 12.8 °C
Absolute maximum temperature: 34.0 °C
Absolute minimum temperature: -14.9 °C
Number of sunny days: 171 days
Number of rainy days: 183 days
Number of snow days: 11 days
Look at detailed online map of Yeonsan
* Weather data for Yeonsan 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 | 12.0 | 22.6 | 25.2 | 30.2 | 34.0 | 31.3 | 33.2 | 29.3 | 21.5 | 22.7 | 16.8 |
| Average daytime temperature (°C) | 3.7 | 7.1 | 15.6 | 17.6 | 22.4 | 27.1 | 27.8 | 29.3 | 25.7 | 18.9 | 11.2 | 6.1 |
| Average temperature (°C) | -1.1 | 1.6 | 8.6 | 12.0 | 17.3 | 21.5 | 24.2 | 25.2 | 21.6 | 13.6 | 6.6 | 2.0 |
| Average night temperature (°C) | -5.1 | -2.3 | 3.5 | 7.0 | 13.0 | 17.5 | 21.6 | 22.0 | 18.4 | 9.2 | 2.5 | -1.4 |
| Absolute minimum temperature (°C) | -14.9 | -6.6 | -4.3 | 1.2 | 6.2 | 13.1 | 17.6 | 17.9 | 13.7 | 4.3 | -6.1 | -11.0 |
| 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 | 13.0 | 12.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 10.1 | 10.9 | 12.0 | 13.1 | 14.0 | 14.5 | 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) | 7.1 | 7.2 | 8.8 | 7.4 | 7.6 | 9.0 | 6.2 | 9.4 | 7.6 | 8.4 | 7.2 | 5.8 |
| Precipitation (mm) | 50 | 19 | 51 | 92 | 170 | 190 | 467 | 363 | 201 | 13 | 98 | 97 |
| Sunny days | 21 | 21 | 22 | 13 | 14 | 13 | 5 | 4 | 7 | 20 | 19 | 12 |
| Rainy days | 5 | 7 | 9 | 17 | 17 | 17 | 26 | 27 | 23 | 11 | 10 | 14 |
| Snow days | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 5 |
The largest precipitation sum in Yeonsan is at