This season sees an almost Mediterranean-like weather, with cool temperatures perfect for almost any activity. Christmas is a popular time, so book early. The Tonle Sap lake and river stay full until end-March, making river travel fun. April is the time of the Cambodian New Year, when, despite the rising temperatures and rain, festivities are at an all time high.
Although May August sees increasing rainfall, it is never in prolonged spells, making it a good time to travel with lesser crowds around temples and other attractions. The tourist trade does not seem to diminish much, as it caters to Europeans on their summer break. Crowds around beaches thin off due to rain.
As seasons go, this is the lowest it gets in Cambodia, when rainfall is the heaviest. It still does not deter travelers, as sights and attractions are still open. Rural areas become difficult to access and beaches are pretty much shut because of the weather.