May in Ba Đồn averages a daily high of 32.3°C with nights around 26°C. Expect roughly 8 wet days totalling 108.4mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Ba Đồn is January–April.
Based on DONG HOI, VM (35.4km), 1995–2024. 23 years of May data.