Average annual temperature is 13.9 °C
Absolute maximum temperature: 35.8 °C
Absolute minimum temperature: -15.3 °C
Number of sunny days: 203 days
Number of rainy days: 158 days
Number of snow days: 4 days
Look at detailed online map of Heunjeon
* Weather data for Heunjeon 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) | 12.1 | 14.2 | 24.6 | 27.0 | 34.3 | 35.8 | 34.3 | 35.6 | 30.7 | 22.7 | 25.4 | 16.9 |
| Average daytime temperature (°C) | 4.1 | 8.5 | 17.5 | 19.8 | 25.3 | 29.5 | 30.4 | 31.4 | 27.0 | 20.3 | 12.1 | 5.9 |
| Average temperature (°C) | -0.9 | 2.4 | 10.0 | 13.3 | 19.3 | 23.8 | 26.0 | 26.8 | 22.6 | 14.3 | 6.7 | 1.4 |
| Average night temperature (°C) | -5.2 | -2.3 | 3.3 | 7.3 | 13.8 | 18.9 | 22.7 | 23.1 | 19.0 | 9.1 | 2.0 | -2.6 |
| Absolute minimum temperature (°C) | -15.3 | -5.9 | -2.8 | 1.4 | 5.2 | 15.6 | 18.7 | 17.9 | 14.1 | 4.0 | -6.6 | -12.3 |
| 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 | 12.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 10.0 | 10.9 | 12.0 | 13.1 | 14.1 | 14.6 | 14.4 | 13.5 | 12.4 | 11.3 | 10.2 | 9.7 |
| 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) | 7.5 | 7.7 | 9.0 | 8.2 | 8.4 | 9.8 | 7.3 | 9.1 | 7.6 | 8.5 | 7.8 | 6.5 |
| Precipitation (mm) | 34 | 10 | 41 | 57 | 150 | 225 | 426 | 309 | 248 | 8 | 50 | 85 |
| Sunny days | 22 | 23 | 24 | 15 | 18 | 12 | 7 | 7 | 12 | 25 | 18 | 20 |
| Rainy days | 7 | 5 | 7 | 15 | 13 | 18 | 24 | 24 | 18 | 6 | 12 | 9 |
| Snow days | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 |
The largest precipitation sum in Heunjeon is at