Average annual temperature is 14.1 °C
Absolute maximum temperature: 36.0 °C
Absolute minimum temperature: -14.9 °C
Number of sunny days: 198 days
Number of rainy days: 160 days
Number of snow days: 7 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) | 14.5 | 15.4 | 25.1 | 27.1 | 34.0 | 36.0 | 34.2 | 35.6 | 30.5 | 22.9 | 26.7 | 16.4 |
| Average daytime temperature (°C) | 4.7 | 8.8 | 18.0 | 20.1 | 25.1 | 29.8 | 30.3 | 31.3 | 26.9 | 20.4 | 12.7 | 6.4 |
| Average temperature (°C) | -0.3 | 2.9 | 10.4 | 13.5 | 19.1 | 24.1 | 25.9 | 26.9 | 22.7 | 14.4 | 6.9 | 1.5 |
| Average night temperature (°C) | -4.6 | -1.7 | 3.5 | 7.6 | 13.4 | 19.3 | 22.3 | 23.2 | 19.0 | 9.1 | 1.8 | -2.6 |
| Absolute minimum temperature (°C) | -14.9 | -5.6 | -3.2 | 0.8 | 4.2 | 16.2 | 18.1 | 19.3 | 13.0 | 4.3 | -6.2 | -11.7 |
| 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) | 7.4 | 7.6 | 8.9 | 8.3 | 8.3 | 10.1 | 7.3 | 9.4 | 7.6 | 8.9 | 7.7 | 6.4 |
| Precipitation (mm) | 31 | 12 | 36 | 48 | 112 | 193 | 347 | 308 | 208 | 8 | 43 | 95 |
| Sunny days | 22 | 20 | 22 | 16 | 20 | 12 | 4 | 9 | 8 | 24 | 19 | 22 |
| Rainy days | 5 | 8 | 9 | 14 | 11 | 18 | 27 | 22 | 22 | 7 | 11 | 6 |
| Snow days | 4 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 |
The largest precipitation sum in Sŏwŏn is at