May in Hà Tĩnh averages a daily high of 32.5°C with nights around 24.6°C. Expect roughly 10.2 wet days totalling 122.3mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Hà Tĩnh is November–April.
Based on VINH, VM (50.3km), 1995–2024. 23 years of May data.