Southeast Asia experiences rainy and dry seasons, which means that the best time to travel is usually November through February when it is cooler and drier than other months. Weather does vary between countries however, so it is unlikely that you will totally escape the monsoons and suffocating heat – but these are just part of the experience!
Vietnam is especially hot and humid (highs of 35 – 38 degrees Celsius) between June and September, and the north tends to be cool and often misty from December to February (15 – 20 degrees Celsius). The wet season (May to October) does not usually obstruct travel as rain is normally confined to an hour or two each day. The wet season is the hottest and most humid period of the year. Central Vietnam occasionally experiences unstable weather in October and November.
With a tropical climate, Cambodia has three seasons. The most pleasant season, the dry one is from November to February with a cooler average temperature. The hot season lasts from March to May with a high average temperature. The monsoon season, hot and humid, is from June to October. The wettest months of the year are August and September.
The rainy season lasts from May through October with hot and humid weather. The dry season begins in November with a cooler average temperature giving way the hot and dry feeling during April and May.
The weather in Thailand is reasonable most times of year, although it certainly gets hot during the summer! November through February is the coolest times of year and there is certainly less rain then than at other times in the year. However, Thailand is a big country with a diverse landscape. There is somewhere to visit whatever time of the year you visit the kingdom. Thailand’s seasons are reasonably uniform through the country, but there are some regional differences. Basically Thailand has three seasons: summer, rainy and winter. The southern part of Thailand however does not have a winter. What follows is a summary of the seasons as they impact the kingdom’s various regions