October in Incheon averages a daily high of 20.2°C with nights around 10.6°C. Expect roughly 5 wet days totalling 46.8mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Incheon is May–June.
Based on INCHEON, KS (6.5km), 1995–2024. 22 years of October data.