In Thailand the rainy season is roughly through June-October. In the rainy seasons of Thailand there is heavy rain for
several hours everyday, but luckly only during the evenings and nights.
The rainy season is Laos is mostly from June-October. There is plenty of rain and it rains all day and all night.
South Vietnam's rainy seasons are from May- November, nad the wetest season is from June- August.
The rainy seasons in Indonesia are form October- March.
All of the countrie's rainy season are in October so if we were you we wouldnt go in October.