Hi ! thank you for visited Chiang Mai my hometown , if you wanna visit here again i will suggest you to come here around May - October ( Rainy seanson not too hot but a bit humit here ) or December - February ( Winter season 25-30c during daytime but less than 20c in the night and it's high season ) you can choose which you would like these both have a different style for travel. ps. not suggest to come here in summer March - April because the weather is too hot 40c++ and air pollution so bad from wildfire.