There are 3 distinct seasons in Chiang Mai. The cool, dry season is from December-February with temperatures ranging from 15⁰C-33⁰C. The hot, dry season is from March-May with temperatures ranging from 20⁰C-35⁰C. The rainy season is from June-October/November with temperatures ranging from 22⁰C-32⁰C. Humidity is higher and rainfall builds up, peaking in September. The normal pattern is occasional heavy showers rather than persistent rain lasting for days.