Siem Reap Weather & Climate: Best Time to Visit
Siem Reap, Siem Reap Province, Cambodia, has a stable climate with little temperature variation across the year. Average daytime temperatures hover around 34°C (93°F), peaking in April at 36°C (97°F) and dipping in December to 32°C (90°F).
The city receives considerable rainfall, with around 1470 mm (58 in) annually. September is the wettest month. It has distinct dry (December to February) and wet (August to October) seasons.
Monthly Temperature in Siem Reap
With minimal seasonal shifts, Siem Reap experiences a constant climate year-round. Typically, average maximum daytime temperatures range from a very hot 36°C (97°F) in April to a very warm 32°C (90°F) in the coolest month, December.
Nights vary from 27°C (81°F) in April to around 22°C (72°F) during the colder months.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Siem Reap
Siem Reap has a notably wet climate with abundant precipitation, recording 1470 mm (58 in) of rainfall per year. The climate in Siem Reap shows significant variation throughout the year. Expect heavy rainfall in September, the wettest month, with an average of 286 mm (11 in) of precipitation over 18 rainy days.
In contrast, the driest month January offers drier and sunnier days, with around 9.8 mm (0.4 in) of rainfall over a single rainy day. 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
Humidity in Siem Reap by Month
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
Siem Reap 3-Day Forecast
Check the conditions for any month of the year.
Best Time to Visit Siem Reap
With its warm weather, Siem Reap experiences temperatures from 32°C (90°F) to 36°C (97°F) throughout the year. January, February, March, November and December offers the driest weather, which makes it a good time to visit.It's smart to plan your activities during the cooler morning hours or take advantage of the refreshing evenings.
Note that May, July, August, September and October make up the rainy season, with heavier precipitation expected. Ready to plan your travels but need destination ideas? Our smart tool recommends places based on the climate conditions you prefer. Start planning with our destination weather tool.
