Average annual temperature is 12.7 °C
Absolute maximum temperature: 33.9 °C
Absolute minimum temperature: -16.9 °C
Number of sunny days: 173 days
Number of rainy days: 174 days
Number of snow days: 18 days
Look at detailed online map of Haesu
* Weather data for Haesu 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) | 12.5 | 11.2 | 23.7 | 26.5 | 30.3 | 33.2 | 32.7 | 33.9 | 29.4 | 21.7 | 23.2 | 17.1 |
| Average daytime temperature (°C) | 2.1 | 5.7 | 14.5 | 17.8 | 23.2 | 27.2 | 28.5 | 29.7 | 25.5 | 18.8 | 10.1 | 4.6 |
| Average temperature (°C) | -2.2 | 0.7 | 8.0 | 12.0 | 17.8 | 21.8 | 24.8 | 25.5 | 21.7 | 14.2 | 5.9 | 0.9 |
| Average night temperature (°C) | -6.4 | -2.7 | 3.3 | 7.5 | 13.3 | 17.6 | 22.1 | 22.3 | 18.5 | 10.4 | 1.9 | -2.5 |
| Absolute minimum temperature (°C) | -16.9 | -7.0 | -3.2 | 1.2 | 6.8 | 14.0 | 19.1 | 17.8 | 12.7 | 5.5 | -7.7 | -15.5 |
| 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 | 10.8 | 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) | 7.3 | 7.9 | 9.4 | 7.8 | 8.5 | 10.0 | 7.4 | 9.0 | 7.2 | 8.4 | 7.0 | 5.3 |
| Precipitation (mm) | 21 | 2 | 22 | 64 | 122 | 143 | 406 | 245 | 313 | 24 | 61 | 87 |
| Sunny days | 18 | 24 | 23 | 16 | 20 | 10 | 3 | 3 | 8 | 21 | 15 | 12 |
| Rainy days | 6 | 3 | 8 | 14 | 11 | 20 | 28 | 28 | 22 | 10 | 13 | 11 |
| Snow days | 7 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 8 |
The best time to visit Haesu during the most sunny months:
The largest precipitation sum in Haesu is at