Average annual temperature is 12.9 °C
Absolute maximum temperature: 35.0 °C
Absolute minimum temperature: -16.0 °C
Number of sunny days: 195 days
Number of rainy days: 163 days
Number of snow days: 7 days
Look at detailed online map of Ulseong
* Weather data for Ulseong 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) | 12.8 | 10.9 | 25.6 | 27.7 | 31.7 | 35.0 | 33.7 | 34.4 | 30.6 | 22.5 | 23.7 | 17.7 |
| Average daytime temperature (°C) | 2.9 | 6.7 | 15.6 | 19.3 | 24.8 | 27.7 | 29.7 | 30.3 | 26.4 | 19.5 | 10.7 | 5.2 |
| Average temperature (°C) | -2.0 | 1.0 | 8.2 | 12.9 | 18.3 | 22.2 | 25.4 | 25.8 | 22.1 | 13.8 | 5.8 | 0.8 |
| Average night temperature (°C) | -6.5 | -3.4 | 2.2 | 7.4 | 12.7 | 17.8 | 22.4 | 22.2 | 18.6 | 8.9 | 1.1 | -2.9 |
| Absolute minimum temperature (°C) | -16.0 | -6.8 | -4.6 | 0.6 | 4.9 | 13.8 | 19.8 | 17.4 | 12.6 | 2.9 | -7.1 | -13.4 |
| 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) | 9.9 | 10.8 | 12.0 | 13.1 | 14.1 | 14.7 | 14.4 | 13.5 | 12.4 | 11.2 | 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) | 7.1 | 8.1 | 9.4 | 7.8 | 8.5 | 9.6 | 7.5 | 8.5 | 7.3 | 8.2 | 7.0 | 5.8 |
| Precipitation (mm) | 36 | 1 | 17 | 82 | 113 | 134 | 426 | 278 | 205 | 28 | 88 | 84 |
| Sunny days | 21 | 25 | 25 | 16 | 21 | 12 | 5 | 6 | 8 | 22 | 16 | 18 |
| Rainy days | 8 | 3 | 6 | 14 | 10 | 18 | 26 | 25 | 22 | 9 | 14 | 8 |
| Snow days | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 5 |
The largest precipitation sum in Ulseong is at