March in Chiang Mai averages a daily high of 35.7°C. Rain is rare — about 2.4 wet days and 19.3mm across the month. Generally workable, with some weather to plan around.
Across the year, the best time to visit Chiang Mai is December–January.
Based on CHIANG MAI, TH (0.8km), 1995–2024. 13 years of March data.