The country has a tropical climate - warm and humid. In the monsoon season, abundant rain allows for the cultivation of a wide variety of crops. This year-round tropical climate makes Cambodia ideal for developing tourism. Travellers need not to fear natural disasters such as erupting volcanoes or earthquakes, and the country is not directly affected by tropical storms.
Climate: Cambodia can be visited throughout the year. However, those plans to travel extensively by road should be avoided the last two months of the rainy season when some countryside roads may be impassable. The average temperature is about 27 degrees Celsius; the minimum temperature is about 16 degrees. December and January are the coolest months, whereas the hottest is April.
General information about the provincial climate:- Cool season: November- March (20-28c)
- Hot season: March- May (26c -35c)
- Rainy season: May - October (24-34c, with humidity up to 90%.) The best beach weather begins with the end of the rains in November. The dry, warm, breezy weather that follows lasts through January. Night temperatures can get down to a chilly 20? but the days hover around 28?-30?. Many think December and January are best with their balmy temperatures and blue skies.
At the end of January, Sihanoukville begins to warm and continues to get hotter through July (maximum 35?). After February, cool 'mango showers' occasionally blow in from the north. December through June is said by some local outfitters to be the best scuba weather with clearer (though cooler) waters than the rest of the year.