Seoul monthly weather averages

  • Average daytime temperature

    The bar chart below shows the average monthly peak daytime temperatures at Seoul

    Seoul average temperature chart
    Average monthly temperatures in Seoul (degrees centigrade and fahrenheit)
      Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    °C 0.9 3.2 9.3 17.1 22.7 26.1 28.3 29.2 25.3 19.5 11.1 3.6
    °F 33.6 37.7 48.7 62.8 72.9 79 82.9 84.6 77.6 67.2 51.9 38.6

    Please note: these are the average peak daytime temperatures (usually around mid-afternoon) so do not show daytime / night highs and lows. To see the daily range of temperatures have a look at the temperature max / min chart below.

  • Average rainfall & rainy days

    The graph below shows the average rainfall and number of rainy days per month.

    Average monthly rainfall in Seoul (mm and inches)
      Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    mm 22 26 45 102 90 133 358 289 161 49 48 21
    inches 0.9 1 1.8 4 3.6 5.2 14.1 11.4 6.3 1.9 1.9 0.8
    Rainy days 7 6 7 8 8 10 16 13 9 6 10 7
  • Average daily sunshine

    The bar chart below shows the average daily sunshine hours in Seoul

    Average daily sunshine Seoul
      Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    Hrs sunshine 6 6.8 7.6 8 8.6 7.9 5.9 6.6 7.2 7.3 5.8 5.6
  • Day / night temperatures

    The graph below shows the daily range of temperatures for each month.

    Maximum and minimum daily temperatures in Seoul (degrees centigrade and fahrenheit)
      Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    Min °C -7.7 -5.4 -0.1 6.5 12.3 17.1 21.4 21.8 16.1 9 2.1 -4.7
    Max °C 1.1 3.4 9.5 17.4 23 26.4 28.5 29.4 25.6 19.8 11.3 3.9
    Min °F 18.1 22.3 31.8 43.6 54.1 62.7 70.4 71.2 60.9 48.2 35.8 23.6
    Max °F 26.1 30.2 40.5 53.4 63.7 71.1 76.8 78.1 69.4 57.9 44.1 31.3
  • Sea temperature

    The graph below shows the average sea temperature.

    Average sea temperature around Seoul in degrees centigrade and fahrenheit
      Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    °C 6.8 5.3 5.5 8.1 12.5 18.3 22.7 25.3 23.2 19.3 14.5 10.1
    °F 44.2 41.5 41.9 46.6 54.6 65 72.8 77.6 73.8 66.8 58 50.1
  • Wind speed

    The graph below shows the average wind speed.

    Average wind speed in Seoul (mph and kmh)
      Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    km/h 9 9 10 10 8 7 7 7 6 7 8 8
    mph 5 6 6 6 5 5 5 4 4 4 5 5

    A monthly average windspeed of over 16km/h or 10mph suggests a location is fairly windy.

  • Relative humidity

    The graph below shows the average relative humidity.

    Average relative humidity in Seoul
    Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    66% 65% 65% 64% 67% 74% 82% 80% 75% 70% 68% 68%
Seoul

Other monthly averages

Seoul weather stats

Seoul weather statistics
Hottest month: August 29.2°C 84.6°F
Driest month: December 21mm 0.8ins
Sunniest month: October 7.3hrs
Coldest month: January 0.9°C 33.6°F
Wettest month: July 358mm 14.1ins
Warmest sea: August 25.3°C 77.5°F
Map showing location of Seoul (37.56826, 126.97783)

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