What's the weather like in Thailand in January? What clothes do you need to write?

January is a cool season and a good season in Thailand. It's not too cold in the south, but if you want to go to the north, such as Chiang Mai and Chiang Rai, it will be cold sooner or later, and Thailand has air conditioning, so it's better to bring long-sleeved clothes. The highest temperature during the day is above 30 degrees. Wear tropical clothes, T-shirts, beach pants, sandals, sun hats and so on.