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June in Osan averages a daily high of 27.8°C. Expect roughly 5 wet days totalling 66.6mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Osan is June.
Based on SEOUL CITY, KS (47km), 1995–2024. 22 years of June data.
See all twelve months for Osan →