By August rainfall is almost at its peak, although rain showers tend to be short and intense, lasting for a few hours rather than all-day downpours. Consequently, the countryside is more lush and green, and water levels on the Tonle Spa Lake are high, making it possible to visit the flooded forests and floating villages by boat. The average temperature is a comfortable 26-27°C.
Whilst the entire country continues to expect mixed, wet weather, the rainfall is heaviest along the south coast. Those looking to combine Cambodia with some beach however do not have to look far as the Vietnamese beaches of Hoi An and Danang are experiencing sunny, dry days in August and are only a short flight away.
In the more rural north-east regions, such as Ratanakiri and Mondulkiri the heavy rain can make travelling around fairly difficult and more remote tracks can become unpassable. If it's 'off the trail' then it's best avoided in August.