The Wet Season
Early/Mid May - October
Cambodia's wet season comes courtesy of the southwest monsoon and lasts from May to October, bringing with it almost 75% of Cambodia's annual rainfall. Across Cambodia, throughout much of the rainy season, daytime temperatures average between 25°C and 27°C. The early months of the wet season (May – July) remain very hot with infrequent rainfall usually in the form of short downpours. In the latter months (late July – September) the rains tend becomes more constant and is heavy at times, especially in coastal and rural regions.
Travel in the more remote corners of the country, such as Mondulkiri & Ratanakiri, is almost impossible due to the state of the roads and journeys into the north east are inadvisable during the peak wet season because of this. There is also very limited access to Bamboo Island (near Kep) due to high seas.
On the upside, travelling in monsoonal Cambodia does have its advantages. The dust is gone and the lush greenery of the countryside returns. Angkor Wat in particular is stunning in the wet season, with moats brimming with water and a severe drop in visitor numbers. High rainfall make it the perfect time of year to visit the flooded forests and floating villages of Tonle Sap Lake by boat, as it swells to more than 5 times its size during wet season.