December is high season for touring Cambodia. In December throughout Cambodia, the weather can be expected to be dry with long periods of clear skies, with temperatures in the mid to high 20’s.
Temperatures are a little bit cooler than the pre and early monsoon months of April to June, making a tour of the temples at Angkor more tolerable in the midday sun.
Cambodia’s beaches are beautiful at this time of year and a stay in a beach resort in Sihanoukville or Kep should be accompanied by beautifully sunny days, clear skies and calm seas.