Average annual temperature is 12.2 °C
Absolute maximum temperature: 32.8 °C
Absolute minimum temperature: -15.6 °C
Number of sunny days: 172 days
Number of rainy days: 182 days
Number of snow days: 11 days
Look at detailed online map of Hayeonseo
* Weather data for Hayeonseo 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) | 14.1 | 12.6 | 21.5 | 24.3 | 29.0 | 30.9 | 31.6 | 32.8 | 28.4 | 21.5 | 22.4 | 15.8 |
| Average daytime temperature (°C) | 3.0 | 6.9 | 14.7 | 16.7 | 21.2 | 26.1 | 27.5 | 29.0 | 25.0 | 18.4 | 10.9 | 5.5 |
| Average temperature (°C) | -1.4 | 1.2 | 8.2 | 11.0 | 16.2 | 20.8 | 23.7 | 24.6 | 20.8 | 13.3 | 6.3 | 1.3 |
| Average night temperature (°C) | -5.2 | -2.8 | 3.0 | 5.9 | 11.7 | 16.6 | 20.9 | 21.1 | 17.3 | 9.2 | 2.3 | -2.0 |
| Absolute minimum temperature (°C) | -15.6 | -7.9 | -4.6 | -0.9 | 4.5 | 12.7 | 16.6 | 16.0 | 12.3 | 4.9 | -7.4 | -12.1 |
| 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 | 7.4 | 8.7 | 7.9 | 8.1 | 9.3 | 7.1 | 9.8 | 7.7 | 8.8 | 7.6 | 6.1 |
| Precipitation (mm) | 36 | 29 | 44 | 82 | 145 | 234 | 404 | 286 | 194 | 9 | 104 | 106 |
| Sunny days | 22 | 16 | 20 | 15 | 13 | 13 | 2 | 4 | 8 | 22 | 20 | 17 |
| Rainy days | 4 | 9 | 11 | 15 | 18 | 17 | 29 | 27 | 22 | 9 | 10 | 11 |
| Snow days | 5 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 |
The largest precipitation sum in Hayeonseo is at