Climate in Seoul, South Korea

The graphs below show the monthly weather averages over the year.
* Data from weather station: Seoul, South Korea.

Average day and night temperature

The mean minimum and maximum temperatures over the year. Show in Fahrenheit

Average min and max temperatures in Seoul, South Korea   Copyright © 2020 www.weather-and-climate.com

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Monthly hours of sunshine

The average monthly total hours of sunshine over the year

Average monthly sunhours in Seoul, South Korea   Copyright © 2020 www.weather-and-climate.com

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Daily percent of sunshine

The mean percent of sunhours during the day over the year

Average percent of sunshine in Seoul, South Korea   Copyright © 2020 www.weather-and-climate.com

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Monthly precipitation

The mean monthly precipitation over the year, including rain, snow, hail etc. Show in Inches

Average precipitation (rain/snow) in Seoul, South Korea   Copyright © 2020 www.weather-and-climate.com

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Monthly rainy days

The average number of days each month with rain, snow, hail etc.

Average rainy days (rain/snow) in Seoul, South Korea   Copyright © 2020 www.weather-and-climate.com

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Average humidity

The mean monthly relative humidity over the year

Average relative humidity in Seoul, South Korea   Copyright © 2020 www.weather-and-climate.com

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Average wind speed

The mean monthly wind speed over the year (in meters per second)

Average wind speed in Seoul, South Korea   Copyright © 2020 www.weather-and-climate.com

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Weather Forecasts for Seoul

SUN Sep 20
25°C | 21°C

Partly cloudy

MON Sep 21
27°C | 18°C

Partly cloudy

TUE Sep 22
25°C | 19°C

Partly cloudy

The best time of year to visit Seoul in 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.

Here are some average weather facts we collected from our historical climate data:

  • During the month of May and September you are most likely to experience good weather with pleasant average temperatures that fall between 20 degrees Celsius (68°F) and 25 degrees Celsius (77°F).
  • On average, the warmest month(s) are July and August.
  • The months of April, May, June and September have a high chance of precipitation.
  • The warmest month is August with an average maximum temperature of 29°C (84°F).
  • The coldest month is January with an average maximum temperature of 0°C (32°F).
  • July is the most wet month. This month should be avoided if you are not a big fan of rain.
  • December is the driest month.
No idea where to travel to this year? We now have a tool which suggests which destination suits your ideal climate conditions. Find out where to go here.