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World Weather & Climate Information

Average monthly weather in Seoul, South Korea

The large amount of people who live and work in Seoul at only 613 kilometers help to ensure that the average temperature in the city is a few degrees higher than in the countryside which surrounds the city. This is because the buildings and streets retain the heat, an effect that is especially noticeable during the summer evenings.

Seoul has relatively cool and sometimes quite mild winters. However not every winter is the same in Seoul. Some winters there will be no days below the freezing point and other years you can experience severe frost. That same unpredictability is reflected throughout almost the entire year. In the summer months, temperatures are mainly tempered by clouds and precipitation.

From May to September you will see the most rain, with rainfall amounts rising in July and August to 300 and sometimes more than 400 millimeters per month. In this period there is also the possibility that Seoul gets hit by a hurricane. The hurricane season runs from June to December in this region.

What's the best time to travel to Seoul in South Korea? Here are some annual weather facts we collected from our historical weather data:
  • The months May, June, July, August and September have nice weather with a good average temperature.
  • On average, the warmest month(s) are July and August.
  • Most rainfall (rainy season) is seen in June, July, August and September.
  • Seoul has dry periods in January, February and December.
  • On average, the warmest month is August.
  • On average, the coolest month is January.
  • July is the wettest month. This month should be avoided if you don't like too much rain.
  • December is the driest month.
For more information, see the weather forecast and our average climate infomation (in graphs) below.

* Data from nearest weather station: Seoul, South Korea (0.0 KM).
14 Day Weather Forecast 

Average minimum and maximum temperature over the year

The monthly mean minimum and maximum daily temperature. Show in Fahrenheit »
Average min and max temperatures in Seoul, South Korea   Copyright © 2016 www.weather-and-climate.com

Average monthly hours of sunshine over the year

This is the monthly total of sunhours
Average monthly sunhours in Seoul, South Korea   Copyright © 2016 www.weather-and-climate.com

Average percent of sunshine over the year

This is the mean percent of sunhours during the day

Average percent of sunshine in Seoul, South Korea   Copyright © 2016 www.weather-and-climate.com

Average monthly precipitation over the year (rainfall, snow)

This is the mean monthly precipitation, including rain, snow, hail etc. Show in Inches »
Average precipitation (rain/snow) in Seoul, South Korea   Copyright © 2016 www.weather-and-climate.com

Average monthly rainy days over the year

This is the number of days each month with rain, snow, hail etc.
Average rainy days (rain/snow) in Seoul, South Korea   Copyright © 2016 www.weather-and-climate.com

Average humidity over the year

This is the mean monthly relative humidity
Average relative humidity in Seoul, South Korea   Copyright © 2016 www.weather-and-climate.com

Average wind speed over the year

This is the mean monthly wind speed (meters per second)
Average wind speed in Seoul, South Korea   Copyright © 2016 www.weather-and-climate.com

Weather Forecast for Seoul

Show in Fahrenheit
SAT
Cloudy
28°C
17°C
SUN
Patchy light rain
20°C
17°C
MON
Mist
26°C
17°C