Like most of the countries in equatorial areas, Cambodia has two distinct seasons – the wet and the dry. Dry season runs from November to April on the back of the northeast monsoon. The average temperature is 27 degrees centigrade. November to January are cooler while February to April are hot and dusty. November is the coolest month, April the hottest. While November and January are quite cool (high C20s) by April the weather is scorching and oh so dry it will take your breath away. Characterised by heat and dust, this season coincides with Cambodia’s peak tourist season when travellers arrive in their droves between November and January to take advantage of the lack of rain and the relative cool. By March travelling can be uncomfortable and hot while April can be excrutiating.
Wet season runs from May to October courtesy of the southwest monsoon. Wet season brings some 75% of Cambodia’s annual rainfall. July to September are the wettest months. Not surprisingly, wet season is characterised by rain, and in the peak of wet season from July to September it can rain as much as two out of every three days. Rainy days tend to have a few hours of heavy rain rather than being all-day downpours, though the latter do occur — you will get wet travelling in a Cambodian wet season.