Siem Reap Weather and Climate: A Comprehensive Guide
Siem Reap maintains a fairly consistent very warm average temperature.
It also has a relatively rainy climate with high levels of precipitation.
Let’s explore the climate details in depth to provide you with a complete overview.
Average maximum day and minimum night temperature
In Siem Reap temperatures are generally consistent throughout the year. On average, daytime temperatures range from a very hot 36°C in April to a very warm 32°C in December.
Nighttime temperatures can drop, with average lows reaching 22°C in December. Check out our detailed temperature page for more information.Temperature ranges by month
Precipitation and rainy days
Siem Reap experiences significant rainfall throughout the year, averaging 1470 mm of precipitation annually. The seasons in Siem Reap, bring significant changes in precipitation. The wettest month, September, receives heavy rainfall, with an average of 286 mm of precipitation. This rainfall is distributed across 18 rainy days. In contrast, the driest month, January, experiences much less rainfall, totaling 9.8 mm over a single rainy day. These distinct seasonal differences provide diverse experiences throughout the year. For more details, please visit our Siem Reap Precipitation page.The mean monthly precipitation over the year, including rain, hail and snow
The average number of days each month with precipitation
Average humidity
The relative humidity is high throughout the year in Siem Reap.
The city experiences its highest humidity in September, reaching 75%. In March, the humidity drops to its lowest level at 58%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
partly cloudy and no rain almost clear and no rain partly cloudy and no rainForecast for Siem Reap
4 m/s
3 m/s
3 m/s
Select a Month of Interest
Check the conditions for any month of the year.
The best time of year to visit Siem Reap in Cambodia
Other facts from our historical weather data:Most rainfall (rainy season) is seen in May, June, July, August, September and October.
Yes, the months of January, February and December are very dry.
April has an average maximum temperature of 36°C and is the hottest month of the year.
The coolest month is December with an average maximum temperature of 32°C.
September tops the wettest month list with 286 mm of rainfall.
January is the driest month with 10 mm of precipitation.
No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.
