Incheon monthly weather averages

Average daytime temperature

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

Incheon average temperature chart (Celsius) Incheon average temperature chart (Fahrenheit)
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.

Incheon monthly rainfall chart (mm) Incheon monthly rainfall chart (inches)
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

Incheon average daily sunshine chart
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 6.9 7.4 7.4 5.9 5.7

Day / night temperatures

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

Incheon average minimum / maximum temperatures (Celsius) Incheon average minimum / maximum temperatures (Fahrenheit)
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.

Incheon average sea temperature chart (Celsius) Incheon average sea temperature chart (Fahrenheit)
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.

Incheon average winspeed by month (km/h) Incheon average winspeed by month (mph)
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.

Incheon relative humidity averages
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

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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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