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May in Sejong averages a daily high of 24.8°C. Expect roughly 12 wet days totalling 168.9mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Sejong is September–October.
Based on TAEJON, KS (33.9km), 1995–2024. 20 years of May data.
See all twelve months for Sejong →