Average annual temperature is 13.2 °C
Absolute maximum temperature: 34.2 °C
Absolute minimum temperature: -16.1 °C
Number of sunny days: 175 days
Number of rainy days: 178 days
Number of snow days: 12 days
Look at detailed online map of Sumu
* Weather data for Sumu 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) | 14.9 | 12.5 | 22.8 | 25.4 | 31.2 | 33.1 | 31.9 | 34.2 | 29.6 | 22.1 | 24.4 | 17.3 |
| Average daytime temperature (°C) | 3.5 | 7.0 | 15.8 | 18.5 | 23.4 | 28.1 | 29.1 | 30.3 | 26.0 | 19.1 | 11.1 | 5.6 |
| Average temperature (°C) | -1.0 | 1.7 | 9.2 | 12.5 | 18.0 | 22.6 | 25.1 | 25.8 | 21.9 | 13.9 | 6.4 | 1.7 |
| Average night temperature (°C) | -5.0 | -2.2 | 3.7 | 7.3 | 13.2 | 17.8 | 22.0 | 22.3 | 18.5 | 9.7 | 2.1 | -1.8 |
| Absolute minimum temperature (°C) | -16.1 | -6.8 | -3.7 | 0.4 | 4.3 | 13.1 | 18.6 | 18.1 | 13.0 | 4.6 | -7.4 | -13.0 |
| 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) | 10.0 | 10.9 | 12.0 | 13.1 | 14.1 | 14.6 | 14.3 | 13.5 | 12.4 | 11.3 | 10.3 | 9.7 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 12.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 7.2 | 7.5 | 9.0 | 8.0 | 8.2 | 10.1 | 7.5 | 9.4 | 7.5 | 8.8 | 7.5 | 6.0 |
| Precipitation (mm) | 41 | 11 | 40 | 80 | 107 | 219 | 549 | 317 | 209 | 18 | 48 | 109 |
| Sunny days | 18 | 20 | 21 | 14 | 18 | 10 | 5 | 3 | 8 | 23 | 17 | 18 |
| Rainy days | 8 | 6 | 10 | 16 | 13 | 20 | 26 | 28 | 22 | 8 | 13 | 8 |
| Snow days | 5 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 5 |
The largest precipitation sum in Sumu is at