Average annual temperature is 11.6 °C
Absolute maximum temperature: 31.8 °C
Absolute minimum temperature: -17.7 °C
Number of sunny days: 172 days
Number of rainy days: 175 days
Number of snow days: 18 days
Look at detailed online map of Sŏwŏn
* Weather data for Sŏwŏn 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) | 11.9 | 12.4 | 20.3 | 24.3 | 28.0 | 30.0 | 30.7 | 31.8 | 27.2 | 20.4 | 22.6 | 15.2 |
| Average daytime temperature (°C) | 2.0 | 6.2 | 13.7 | 16.0 | 20.4 | 25.3 | 26.9 | 28.1 | 24.2 | 17.6 | 10.1 | 4.5 |
| Average temperature (°C) | -2.3 | 0.8 | 7.6 | 10.4 | 15.7 | 20.4 | 23.3 | 24.1 | 20.3 | 12.4 | 5.3 | 0.4 |
| Average night temperature (°C) | -5.9 | -2.9 | 2.5 | 5.2 | 11.5 | 16.3 | 20.5 | 20.9 | 17.0 | 8.2 | 0.9 | -3.0 |
| Absolute minimum temperature (°C) | -17.7 | -8.9 | -5.2 | -1.8 | 3.6 | 12.7 | 17.4 | 16.8 | 11.5 | 2.8 | -8.9 | -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 | 13.0 | 12.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 10.0 | 10.9 | 12.0 | 13.1 | 14.1 | 14.5 | 14.3 | 13.5 | 12.4 | 11.3 | 10.3 | 9.8 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 6.9 | 7.4 | 8.7 | 7.7 | 7.8 | 9.4 | 7.2 | 9.2 | 7.5 | 8.9 | 7.4 | 6.2 |
| Precipitation (mm) | 45 | 23 | 38 | 80 | 130 | 199 | 403 | 314 | 192 | 8 | 79 | 111 |
| Sunny days | 20 | 17 | 21 | 13 | 15 | 13 | 3 | 4 | 9 | 23 | 18 | 16 |
| Rainy days | 5 | 7 | 10 | 17 | 16 | 17 | 28 | 27 | 21 | 8 | 10 | 9 |
| Snow days | 6 | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 6 |
The largest precipitation sum in Sŏwŏn is at