March in Hà Tiên averages a daily high of 32.3°C with nights around 25.1°C. Expect roughly 7 wet days totalling 89.3mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Hà Tiên is December–February.
Based on PHU QUOC, VM (59.9km), 1995–2024. 19 years of March data.