Average annual temperature is 13.2 °C
Absolute maximum temperature: 34.6 °C
Absolute minimum temperature: -16.2 °C
Number of sunny days: 196 days
Number of rainy days: 161 days
Number of snow days: 8 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) | 12.4 | 12.9 | 23.7 | 25.5 | 32.3 | 34.0 | 33.0 | 34.6 | 30.0 | 22.2 | 24.9 | 17.1 |
| Average daytime temperature (°C) | 3.3 | 7.5 | 16.5 | 19.0 | 24.1 | 28.4 | 29.6 | 30.4 | 26.2 | 19.5 | 11.3 | 5.0 |
| Average temperature (°C) | -1.4 | 1.7 | 9.3 | 12.6 | 18.2 | 22.8 | 25.1 | 25.9 | 21.8 | 14.0 | 6.2 | 0.8 |
| Average night temperature (°C) | -5.5 | -2.6 | 2.8 | 6.8 | 12.8 | 18.0 | 21.7 | 22.3 | 18.3 | 9.3 | 1.5 | -3.0 |
| Absolute minimum temperature (°C) | -16.2 | -7.0 | -3.9 | 0.8 | 3.6 | 14.8 | 17.8 | 18.1 | 13.4 | 4.1 | -7.7 | -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 | 14.4 | 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) | 7.5 | 7.7 | 9.1 | 8.2 | 8.2 | 9.8 | 7.4 | 9.1 | 7.4 | 8.9 | 7.7 | 6.3 |
| Precipitation (mm) | 37 | 12 | 49 | 52 | 146 | 228 | 462 | 320 | 267 | 10 | 42 | 112 |
| Sunny days | 23 | 20 | 20 | 15 | 18 | 10 | 3 | 10 | 14 | 23 | 19 | 21 |
| Rainy days | 5 | 6 | 11 | 15 | 13 | 20 | 28 | 21 | 16 | 8 | 11 | 7 |
| Snow days | 3 | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 3 |
The largest precipitation sum in Sŏwŏn is at