Perhaps the best month to visit, as the country is well and truly back in the dry season yet the temperatures are in the mid-20s°C, humidity is relatively low and the scenery is still lush and green.
As the Mekong River and Tonle Sap Lake are still in full flood this is the peak month for river cruising as the boats have access to most parts of the river. In fact in November the Bon Om Touk Water Festival is held, during which concerts and boat races are held in Phnom Penh.
Travel around the country is also easy and so if you can’t afford the time or price of the boats why not head along the Mekong to Kratie and stay on one of the islands that pockmark the river, or further afield head up to the waterfalls and high country of Mondulkiri. On the beaches of the south coast and outlying islands you can expect warm, sunny days and calm seas. The whole country is open and at its best for you to enjoy.