Average annual temperature is 15.3 °C
Absolute maximum temperature: 36.1 °C
Absolute minimum temperature: -10.7 °C
Number of sunny days: 199 days
Number of rainy days: 164 days
Number of snow days: 2 days
Look at detailed online map of Suwŏl
* Weather data for Suwŏl 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) | 15.3 | 13.5 | 22.8 | 22.2 | 23.2 | 28.1 | 32.2 | 36.1 | 30.4 | 25.0 | 24.8 | 18.6 |
| Average daytime temperature (°C) | 6.6 | 9.7 | 15.2 | 17.2 | 20.2 | 24.2 | 27.3 | 30.3 | 27.1 | 22.1 | 14.9 | 9.6 |
| Average temperature (°C) | 2.8 | 5.4 | 11.0 | 13.9 | 17.4 | 21.7 | 25.0 | 27.5 | 24.1 | 17.8 | 10.8 | 5.7 |
| Average night temperature (°C) | -1.3 | 1.6 | 7.2 | 10.6 | 14.9 | 19.5 | 23.1 | 25.2 | 21.6 | 13.8 | 6.8 | 2.1 |
| Absolute minimum temperature (°C) | -10.7 | -2.9 | -0.4 | 4.4 | 9.8 | 16.0 | 20.5 | 23.0 | 17.0 | 9.3 | -1.8 | -6.7 |
| 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) | 10.1 | 10.9 | 12.0 | 13.1 | 14.0 | 14.5 | 14.2 | 13.4 | 12.4 | 11.3 | 10.4 | 9.9 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 13.0 | 12.0 | 11.0 | 10.0 | 10.0 | 9.0 |
| Sunshine mean duration (h) | 7.7 | 7.6 | 8.7 | 7.9 | 7.8 | 8.3 | 7.0 | 9.8 | 7.5 | 8.7 | 8.2 | 7.3 |
| Precipitation (mm) | 60 | 47 | 59 | 102 | 266 | 238 | 389 | 292 | 242 | 9 | 43 | 85 |
| Sunny days | 24 | 20 | 20 | 16 | 14 | 8 | 7 | 8 | 12 | 25 | 24 | 21 |
| Rainy days | 6 | 8 | 11 | 14 | 17 | 22 | 24 | 23 | 18 | 6 | 6 | 9 |
| Snow days | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
The largest precipitation sum in Suwŏl is at