Average annual temperature is 12.5 °C
Absolute maximum temperature: 33.9 °C
Absolute minimum temperature: -18.2 °C
Number of sunny days: 178 days
Number of rainy days: 167 days
Number of snow days: 20 days
Look at detailed online map of Ulmi
* Weather data for Ulmi 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) | 13.1 | 11.6 | 24.4 | 23.7 | 30.2 | 31.6 | 33.8 | 33.9 | 29.5 | 21.4 | 23.1 | 16.3 |
| Average daytime temperature (°C) | 1.6 | 6.7 | 15.0 | 17.7 | 23.0 | 26.8 | 29.4 | 30.2 | 26.0 | 18.4 | 10.0 | 4.2 |
| Average temperature (°C) | -3.0 | 1.2 | 8.5 | 11.8 | 17.7 | 21.9 | 25.2 | 25.8 | 21.5 | 13.3 | 5.4 | 0.2 |
| Average night temperature (°C) | -7.6 | -2.7 | 2.8 | 6.6 | 12.7 | 17.5 | 21.9 | 22.4 | 18.0 | 9.0 | 1.0 | -3.1 |
| Absolute minimum temperature (°C) | -18.2 | -7.4 | -5.1 | -0.6 | 4.8 | 13.9 | 18.1 | 16.3 | 12.3 | 3.1 | -8.2 | -14.4 |
| 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 | 13.2 | 14.2 | 14.7 | 14.4 | 13.6 | 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 | 7.8 | 9.3 | 8.2 | 9.0 | 10.1 | 7.6 | 9.3 | 7.4 | 8.4 | 7.5 | 6.1 |
| Precipitation (mm) | 30 | 4 | 30 | 85 | 153 | 182 | 559 | 329 | 247 | 23 | 73 | 86 |
| Sunny days | 18 | 22 | 22 | 13 | 19 | 9 | 6 | 7 | 8 | 20 | 16 | 18 |
| Rainy days | 4 | 3 | 9 | 17 | 12 | 21 | 25 | 24 | 22 | 11 | 12 | 7 |
| Snow days | 9 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 6 |
The largest precipitation sum in Ulmi is at