Let me tell you about the Low season for different destination in the South East Asian countries. When you can save on the money on flights and hotels.
When to go – April to October when temperature is between 24 degree to 30 degree is the best time to save on the travel to Bali and other Indonesian cities. July to September is always a Peak Season for Bali where flights and hotels are expensive.
When to go – Being close to equator its always hot and humid. But still January to March and June to September are comparatively low season for Malaysia to Travel with best deals on hotel and flights.
When to go – Same as Malaysia Singapore is also humid all around the year but its advisable to travel in June to August when its dry and you can grab a lot of deals over the hotels.
Chiang Mai – November to February because of its proximity to the hills average temperature in the day time remains around 30 degrees. Low Season remains attractive from May to October
Koh Samui – April to September and January to March is the ideal time.But October to December been the rainy season it remains a low season for the destination.
Phuket – May to October been the rainy season you can grab a lot of discounts and value added services by the hotel.
When to go – May to October will the best time with temperature touching to 40 degrees at some places in Vietnam. When you can grab good deals with the hotels and flights are relatively cheaper for the travel in these months.