The climate in Siem Reap during December can be summarized as hot, humid and very dry.
December is in the winter in Siem Reap and is typically the coldest month of the year. Daytime maximum temperatures average around a muggy 30°C (87°F), whilst at night 20°C (67°F) is normal.
|Daytime temperature||30.4°C 86.6°F|
|Nightly temperature||19.7°C 67.4°F|
|Average temperature||25°C 77°F|
|Daily sunshine||9.3 hrs|
|Avg rainfall||7 mm 0.3 ins|
|Rainy days||2 days|
|Sea temperature||27.4°C 81.3°F|
|Windspeed||5.8kph 4 mph|
On average December is the 2nd driest month of the year in Siem Reap with around 7mm 0.3 inches of rain making it a very dry time to visit.
On the flip side this corresponds to an average of 9.3 hours of sunshine per day.
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Siem Reap in December 2023.
|Hottest month:||April||35.7°C 96.3°F|
|Driest month:||January||1mm 0ins|
|Coldest month:||December||30.1°C 86.2°F|
|Wettest month:||September||250mm 9.8ins|