Average annual temperature is 14.1 °C
Absolute maximum temperature: 34.0 °C
Absolute minimum temperature: -14.1 °C
Number of sunny days: 165 days
Number of rainy days: 184 days
Number of snow days: 16 days
Look at detailed online map of Hayeon
* Weather data for Hayeon 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) | 16.5 | 11.9 | 25.8 | 25.1 | 30.1 | 33.3 | 33.2 | 34.0 | 31.2 | 22.8 | 25.0 | 19.0 |
| Average daytime temperature (°C) | 4.5 | 7.1 | 15.1 | 18.7 | 23.6 | 26.9 | 29.4 | 30.6 | 26.9 | 20.4 | 13.0 | 7.4 |
| Average temperature (°C) | 0.1 | 1.9 | 8.7 | 13.1 | 18.3 | 22.2 | 25.7 | 26.6 | 22.8 | 15.6 | 8.9 | 4.0 |
| Average night temperature (°C) | -4.5 | -2.2 | 3.9 | 8.3 | 14.1 | 19.0 | 23.0 | 23.3 | 19.1 | 11.1 | 4.5 | 0.5 |
| Absolute minimum temperature (°C) | -14.1 | -5.2 | -3.3 | 2.5 | 5.8 | 15.0 | 20.4 | 16.5 | 13.4 | 7.4 | -3.5 | -10.1 |
| 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) | 7.0 | 7.4 | 8.9 | 7.7 | 8.1 | 9.4 | 6.9 | 9.6 | 7.7 | 8.6 | 6.5 | 4.8 |
| Precipitation (mm) | 37 | 8 | 25 | 66 | 158 | 147 | 489 | 199 | 208 | 18 | 95 | 136 |
| Sunny days | 19 | 23 | 24 | 15 | 12 | 14 | 2 | 4 | 9 | 20 | 14 | 9 |
| Rainy days | 7 | 5 | 7 | 15 | 19 | 16 | 29 | 27 | 21 | 11 | 15 | 12 |
| Snow days | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 10 |
The largest precipitation sum in Hayeon is at