Average annual temperature is 12.5 °C
Absolute maximum temperature: 33.6 °C
Absolute minimum temperature: -13.9 °C
Number of sunny days: 196 days
Number of rainy days: 165 days
Number of snow days: 4 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) | 13.5 | 13.9 | 22.8 | 26.7 | 30.5 | 33.4 | 32.5 | 33.6 | 29.2 | 22.4 | 23.6 | 16.2 |
| Average daytime temperature (°C) | 4.2 | 8.1 | 16.1 | 17.9 | 22.1 | 27.5 | 28.0 | 29.5 | 25.6 | 19.4 | 11.8 | 6.2 |
| Average temperature (°C) | -0.9 | 1.8 | 8.5 | 11.4 | 16.5 | 21.7 | 24.0 | 25.0 | 21.1 | 12.8 | 6.3 | 1.2 |
| Average night temperature (°C) | -4.9 | -2.8 | 2.0 | 5.4 | 11.3 | 16.7 | 20.9 | 21.3 | 17.3 | 7.4 | 1.7 | -2.6 |
| Absolute minimum temperature (°C) | -13.9 | -6.6 | -4.8 | -1.0 | 1.9 | 12.5 | 16.5 | 16.5 | 12.2 | 2.9 | -6.2 | -10.4 |
| 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) | 10.1 | 10.9 | 12.0 | 13.1 | 14.0 | 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) | 7.3 | 7.5 | 8.8 | 7.8 | 7.8 | 9.3 | 7.1 | 9.6 | 7.6 | 8.8 | 7.6 | 6.5 |
| Precipitation (mm) | 36 | 25 | 37 | 72 | 123 | 194 | 391 | 284 | 189 | 7 | 79 | 94 |
| Sunny days | 24 | 20 | 20 | 16 | 18 | 13 | 6 | 7 | 9 | 24 | 20 | 19 |
| Rainy days | 5 | 8 | 11 | 14 | 13 | 17 | 25 | 24 | 21 | 7 | 10 | 10 |
| Snow days | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 |
The largest precipitation sum in Sŏwŏn is at