Average annual temperature is 14.9 °C
Absolute maximum temperature: 35.0 °C
Absolute minimum temperature: -12.8 °C
Number of sunny days: 214 days
Number of rainy days: 149 days
Number of snow days: 2 days
Look at detailed online map of Gangseo
* Weather data for Gangseo 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) | 16.6 | 15.7 | 23.7 | 28.6 | 32.8 | 32.2 | 34.1 | 35.0 | 30.4 | 24.2 | 27.5 | 20.3 |
| Average daytime temperature (°C) | 6.3 | 9.3 | 15.9 | 18.5 | 22.1 | 26.2 | 29.3 | 29.3 | 25.9 | 21.2 | 14.3 | 8.4 |
| Average temperature (°C) | 1.9 | 4.6 | 10.6 | 14.0 | 18.2 | 22.6 | 26.1 | 26.5 | 23.2 | 16.4 | 9.4 | 4.3 |
| Average night temperature (°C) | -1.9 | 0.4 | 5.8 | 9.6 | 14.4 | 19.5 | 23.3 | 23.9 | 20.7 | 12.1 | 4.7 | 0.7 |
| Absolute minimum temperature (°C) | -12.8 | -3.6 | -1.6 | 4.4 | 7.5 | 15.5 | 19.0 | 21.0 | 15.4 | 7.0 | -4.5 | -9.5 |
| 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) | 7.9 | 7.3 | 9.2 | 8.9 | 8.4 | 10.0 | 9.0 | 9.3 | 7.4 | 8.9 | 8.1 | 7.2 |
| Precipitation (mm) | 40 | 32 | 59 | 53 | 169 | 123 | 281 | 185 | 243 | 2 | 30 | 95 |
| Sunny days | 25 | 18 | 20 | 18 | 19 | 14 | 7 | 10 | 9 | 25 | 24 | 25 |
| Rainy days | 5 | 9 | 11 | 12 | 12 | 16 | 24 | 21 | 21 | 6 | 6 | 6 |
| Snow days | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The largest precipitation sum in Gangseo is at