Chiang Mai Climate & Weather
Chiang Mai has no winter, spring, summer, or fall. It experiences three seasons: hot, rainy, and cool. Northern Thailand, like Chiang Mai and Chiang Rai belongs to a subtropical monsoon climate, and the annual average temperature is generally around 25℃. It is cool at night, and the temperature is different between daytime and night time. When traveling in the north, it is recommended to wear a long-sleeved coat to prevent a cold.
March to May is during the hot season, April is the hottest month. The northeast monsoon is transited to southwest monsoon during that period of time.
June to October is during the rainy season, the rainfall peak of the year. Every year except the rainy season from June to October, the rest of the year is a comfortable tourism season. The rainy season in northern Thailand is from June to October. At this time, the rainfall is the most abundant. You must bring rain gear when you travel. The average temperature during the rest of the time is only about 18-24℃.
From November to February is experiencing the northeast monsoon climate with less rainfall. Compared with other seasons, it will be drier. It is rarely rainy in northern Thailand during the cool season; the lowest temperature can reach to below 10℃. Sometimes there is even no rain for two months. The local people will place bowls and jars in front of their house to store water. But it is still the most comfortable season ahead of the whole year. Thai people never regard the rainstorm or floods as a disaster. They are very grateful for the rain.
Best Time to Visit Chiang Mai
The best time to visit Chiang Mai is from November to February as the monsoon season is over, and the hot temperature of Thailand's summer has not come yet.