Weather · Incheon, South Korea
Incheon Weather in September
September in Incheon averages 25°C by day and 18°C at night, with about 173mm of rain. That makes it one of the best months to visit.
Avg high
25°C
77°F
Avg low
18°C
64°F
Rainfall
173mm
#4 wettest of 12
What to pack
Summer clothes by day; a light layer for evenings. Pack a rain jacket or travel umbrella, showers are frequent this month.
Timing a trip around the weather? A Local Friend in Incheon builds it around the season for you.