June in Đồng Hới averages a daily high of 34.4°C with nights around 27.2°C. Expect roughly 4.6 wet days totalling 43.4mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Đồng Hới is January–April.
Based on DONG HOI, VM (2.8km), 1995–2024. 20 years of June data.