July in Siheungdong averages a daily high of 29.1°C. Expect roughly 18 wet days totalling 501.2mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Siheungdong is June.
Based on SEOUL CITY, KS (13.7km), 1995–2024. 20 years of July data.