What is great about planning a trip to Cambodia is the tropical weather with a distinct pattern. This makes climate quite predictable so you can come prepared and enjoy your adventure.
Its probably fair to split the climate to 2 distinct sections:
Dry Season | From around November to end of March is best known as the dry season. There is minimal rain and lower temperatures (in the 20C’s) with a bit of cool breeze. This is a popular season to visit Cambodia so expect long queues and hordes of people at the sights.
The Not So Dry Season | Well, thats what we like to call it 🙂 The Wet season is no joking wet. It can be sunny and blue sky, then out of no where a considerable downpour of rain will cripple the city. Having said that, sightseeing is much easier during this period (Apr- Oct). Also the weather is warmer, at times reaching 40 degrees. We recommend going with the flow. If locals can do it – you can too! Pack a light weight raincoat in your day pack and pop it on unperturbed if it rains, and for extra nice touch start do your own rendition of “Singing in the rain”! 😀
The Rainy Season | Though many people try to avoid rain while traveling, it is not the case for Cambodia. During the rainy season the temples of Angkor are at their most attractive and most photogenic look. The reflecting pools and moats are full, the vegetation is deep green and the wet stone of the temples is at its most colorful. The river and lake levels are high making boat travel easy. It’s the best time of year to take the boat from Siem Reap to Battambang, reputedly one of the most picturesque boat trips in Cambodia.