June in Wŏnsan averages a daily high of 24.4°C with nights around 16.5°C. Expect roughly 12 wet days totalling 42mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Wŏnsan is September–October.
Based on WONSAN, KN (3.5km), 1995–2024. 25 years of June data.