December in Hà Tiên averages a daily high of 30.8°C with nights around 23.4°C. Expect roughly 5.5 wet days totalling 73.1mm. 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. 18 years of December data.