September in Bucheon-si averages a daily high of 26.1°C with nights around 17.4°C. Expect roughly 8.8 wet days totalling 131.9mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Bucheon-si is May–June.
Based on INCHEON, KS (13.7km), 1995–2024. 22 years of September data.