Siem Reap Weather & Climate: Best Time to Visit
The climate in Siem Reap, Siem Reap Province, Cambodia, is remarkably consistent, with temperatures year-round averaging 34°C (93°F). The warmest month is April at 36°C (97°F), and the coolest is December at 32°C (90°F).
The city has a wet climate, receiving around 1470 mm (58 in) of rainfall per year. Despite the high annual total, it has distinct dry (December to February) and wet (August to October) seasons. September is the wettest month.
Monthly Temperature in Siem Reap
In Siem Reap temperatures are generally consistent throughout the year. On average, daytime temperatures range from a very hot 36°C (97°F) in April to a very warm 32°C (90°F) in December.
Nighttime temperatures range from 27°C (81°F) in April to 22°C (72°F) in December.Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Siem Reap
Siem Reap experiences significant rainfall throughout the year, averaging 1470 mm (58 in) 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 (11 in) of precipitation. This rainfall is distributed across 18 rainy days.
In contrast, the driest month, January, experiences much less rainfall, totaling 9.8 mm (0.4 in) 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
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
The warm weather in Siem Reap maintains temperatures between 32°C (90°F) and 36°C (97°F) year-round. Plan your visit during January, February, March, November and December for drier days and the best conditions to enjoy being outside.To make the most of your visit, consider exploring early in the morning or during the pleasant late afternoon hours when the temperature is most comfortable.
Be aware that May, July, August, September and October constitute the rainy season, with significant precipitation. Looking for inspiration on where to travel this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.
