Average annual temperature is 12.5 °C
Absolute maximum temperature: 34.2 °C
Absolute minimum temperature: -18.1 °C
Number of sunny days: 178 days
Number of rainy days: 174 days
Number of snow days: 13 days
Look at detailed online map of Seoul
* Weather data for Seoul 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) | 11.4 | 9.8 | 22.3 | 26.8 | 28.2 | 34.2 | 33.4 | 34.0 | 30.8 | 22.4 | 23.3 | 15.9 |
| Average daytime temperature (°C) | 1.9 | 6.1 | 14.3 | 18.0 | 23.2 | 26.2 | 29.1 | 29.5 | 26.3 | 19.2 | 9.7 | 4.3 |
| Average temperature (°C) | -3.2 | 0.4 | 7.5 | 12.2 | 17.7 | 21.8 | 25.4 | 25.9 | 22.2 | 14.0 | 5.0 | -0.1 |
| Average night temperature (°C) | -7.8 | -3.7 | 2.0 | 7.5 | 13.0 | 18.1 | 22.6 | 22.8 | 18.9 | 9.6 | 0.7 | -4.0 |
| Absolute minimum temperature (°C) | -18.1 | -6.7 | -4.5 | 1.0 | 5.8 | 14.4 | 20.0 | 18.4 | 12.4 | 4.3 | -7.3 | -14.5 |
| 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 | 14.0 | 12.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.9 | 10.8 | 12.0 | 13.2 | 14.2 | 14.7 | 14.5 | 13.6 | 12.4 | 11.2 | 10.2 | 9.6 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 7.1 | 8.3 | 9.1 | 7.5 | 9.2 | 9.2 | 7.6 | 8.5 | 7.7 | 8.2 | 7.0 | 6.3 |
| Precipitation (mm) | 36 | 2 | 17 | 103 | 166 | 220 | 417 | 311 | 144 | 29 | 99 | 81 |
| Sunny days | 19 | 24 | 22 | 14 | 20 | 8 | 3 | 8 | 9 | 18 | 16 | 17 |
| Rainy days | 6 | 3 | 9 | 16 | 11 | 22 | 28 | 23 | 21 | 13 | 12 | 10 |
| Snow days | 6 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 4 |
The largest precipitation sum in Seoul is at