March in Phuket averages a daily high of 34.1°C with nights around 26°C. Expect roughly 6.2 wet days totalling 59.4mm. Generally workable, with some weather to plan around.
Across the year, the best time to visit Phuket is January–February.
Based on PHUKET, TH (0.9km), 1995–2024. 17 years of March data.