Incheon monthly weather averages

  • Average daytime temperature

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

    Incheon average temperature chart
    Average monthly temperatures in Incheon (degrees centigrade and fahrenheit)
      Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    °C 1.2 3.2 8.9 16.2 21.7 25.4 27.8 29 25.2 19.5 11.5 4.1
    °F 34.2 37.8 48.1 61.2 71.1 77.8 82 84.2 77.4 67.2 52.7 39.5

    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 Incheon (mm and inches)
      Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    mm 23 25 44 96 86 119 317 274 154 51 51 21
    inches 0.9 1 1.7 3.8 3.4 4.7 12.5 10.8 6.1 2 2 0.8
    Rainy days 7 6 7 8 8 9 15 13 8 6 9 8
  • Average daily sunshine

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

    Average daily sunshine Incheon
      Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    Hrs sunshine 6.1 6.9 7.7 8.1 8.7 8 6 6.8 7.4 7.4 5.9 5.7
  • Day / night temperatures

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

    Maximum and minimum daily temperatures in Incheon (degrees centigrade and fahrenheit)
      Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    Min °C -7.2 -5.2 -0.2 6.2 11.9 16.8 21.3 21.8 16.2 9.2 2.5 -4.2
    Max °C 1.4 3.4 9.2 16.5 22 25.7 28 29.2 25.5 19.8 11.7 4.4
    Min °F 19 22.6 31.7 43.1 53.3 62.2 70.3 71.2 61.1 48.6 36.5 24.5
    Max °F 26.8 30.4 40.1 52.3 62.4 70.2 76.3 77.9 69.4 58.1 44.8 32.2
  • Sea temperature

    The graph below shows the average sea temperature.

    Average sea temperature around Incheon 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 Incheon (mph and kmh)
      Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    km/h 9 10 10 10 9 8 8 7 7 7 9 9
    mph 6 6 7 6 6 5 5 5 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 Incheon
    Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
    67% 67% 67% 67% 70% 76% 83% 81% 76% 72% 69% 69%
Incheon

Other monthly averages

Incheon weather stats

Incheon weather statistics
Hottest month: August 29°C 84.2°F
Driest month: December 21mm 0.8ins
Sunniest month: October 7.4hrs
Coldest month: January 1.2°C 34.2°F
Wettest month: July 317mm 12.5ins
Warmest sea: August 25.3°C 77.5°F
Map showing location of Incheon (37.45361, 126.73167)

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