Incheon Weather in September

What's the weather like in Incheon (Incheon) in September 2023?

The climate in Incheon during September can be summarized as warm, humid and wet.

September is in the fall / autumn in Incheon and is typically the 4th warmest month of the year. Daytime maximum temperatures average around a muggy 26°C (78°F), whilst at night 16°C (61°F) is normal.

Incheon weather averages (imperial / metric)
Daytime temperature 25.5°C 77.8°F
Nightly temperature 16.2°C 61.1°F
Average temperature 20.8°C 69.4°F
Daily sunshine 7.4 hrs
Avg rainfall 154 mm 6.1 ins
Rainy days 8 days
Sea temperature 23.2°C 73.8°F
Humidity 76%
Windspeed 6.5kph 4 mph

On average September is the 3rd wettest month of the year in Incheon with around 154mm 6.1 inches of rain making it a wet time to visit. This rainfall is typically spread over 8 days, although this may vary considerably.

On the flip side this corresponds to an average of 7.4 hours of sunshine per day.

September temperatures in Incheon

Incheon average temperature in September

September rainfall

Incheon average rain in September

September hourly sunshine

Incheon average rain in September

The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Incheon in September 2023.

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
Map showing location of Incheon (37.45361, 126.73167) Incheon map pin © Google

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