Hot Season (Summer) in Thailand 2025
If you don't stand the heat, avoid this period
Best time: March–June
April and June are the hottest months of the year on the whole territory of Thailand. However, roasting hot weather is typical for the northern part of the country. It lasts from March to May or June. This is the time when temperatures get really unbearable, humidity level also gets higher and a slight rain is also possible. This is the least popular season to visit Thailand.