5-day weather forecast Seoul Oct 20, 2026
19°Weather forecast Seoul Tuesday Oct 20, 2026: overcast, temperature from 16 °C to 19 °C.
Precipitation probability 11%. Wind up to 1.61 m/s (gusts 3.69 m/s). Air humidity 39–59%, atmospheric pressure 761–764 mm Hg, UV index up to 1.6.
5 days at a glance — tap a day to open it
Sunrise 06:45
Sunset 17:48
Sunset 17:48
Waxing Gibbous77% illuminated
Moonrise 14:55 · Moonset 00:37
Moonrise 14:55 · Moonset 00:37
Chart
TableTue, Oct 20, 2026
Forecast from 16 °C to 19 °C and precipitation
Cloud cover and precipitation probability
Wind speed and direction
Air humidity
Atmospheric pressure
Ultraviolet index
Air quality & pollen
Air quality is available for the first three days only.
Tue, Oct 20, 2026
Seoul on the map
Data Sources & Methodology
Our weather forecasts are powered by a professional weather data provider that aggregates data from national weather services, satellite observations, radar networks, and over 80,000 weather stations worldwide. Forecast data is updated multiple times daily. We convert raw data into clear summaries — wind speed in m/s, pressure in mmHg — so you can plan your day with confidence.