Map of Siem Reap in Cambodia

Siem Reap Climate

Siem Reap is a city within Cambodia (but not the capital city).

Best time to visit Siem Reap

The best time to visit Siem Reap will be when the average temperatures are at a comfortable level (between 20°C / 68.0°F and 30°C / 86.0°F on average) which is during months January, February, June, July, August, September, October, November and December. However, there are other good times to visit Siem Reap, but it will be little hotter (for Siem Reap this is between 30°C / 86.0°F and 40°C / 104.0°F on average). These are during months March, April and May.


The hottest time of year in Siem Reap is in March when it is 30.35°C / 86.6°F on average. However, going by the maximum temperatures, the hottest month is April at 35.5°C / 95.9°F. The coldest time of year here is in December when it is 25.65°C / 78.2°F on average. However, going by the minimum temperatures, the coldest month is January at 19.7°C / 67.5°F.

  • Freezing months: 0 (0°C / 32.0°F and below)
  • Cold months: 0 (0°C / 32.0°F to 10°C / 50.0°F)
  • Cool months: 0 (10°C / 50.0°F to 20°C / 68.0°F)
  • Warm months: 9 (20°C / 68.0°F to 30°C / 86.0°F)
  • Hot months: 3 (30°C / 86.0°F to 40°C / 104.0°F)
  • Boiling months: 0 (40°C / 104.0°F and above)

Siem Reap Climate Chart

Below are the climate charts for Siem Reap which resides in Cambodia.

Temperature tables

The first table is for the average temperatures across the year in degrees Celsius. The cells that are BLUE show the coldest months and the cells that are PINK show the hottest months.

Month:JanFebMarAprMayJunJulAugSepOctNovDec
Average Temperature in °C25.8527.0530.3530.330.329.1528.7528.528.3527.626.525.65
Max Temperature in °C3233.334.635.535.233.532.73232.231.330.631
Min Temperature in °C19.720.826.125.125.424.824.82524.523.922.420.3

This second table is for the average temperatures across the year in degrees Fahrenheit. Cells in BLUE are the coldest months and cells in PINK are the hottest months.

Month:JanFebMarAprMayJunJulAugSepOctNovDec
Average Temperature in °F78.580.786.686.586.584.583.883.383.081.779.778.2
Max Temperature in °F89.691.994.395.995.492.390.989.690.088.387.187.8
Min Temperature in °F67.569.479.077.277.776.676.677.076.175.072.368.5

Rainfall figures

This table is for the amount of rainfall (both in millimetres and inches) and number of rainy days in Siem Reap throughout the year.

Month:JanFebMarAprMayJunJulAugSepOctNovDec
Total rainfall in MM0.73.52861.2175.9221.3236.6151276.124881.710.1
Total rainfall in Inches0.00.11.12.46.98.79.36.010.99.83.20.4
Total number of rainy days0.823.8817.220.421.819.221.421.410.43
Chances of rain2.6%7.1%12.3%26.7%55.5%68.0%70.3%61.9%71.3%69.0%34.7%9.7%

Siem Reap Climate Graph

Below is a climate graph for Siem Reap, Cambodia. It shows the average temperatures throughout the year in degrees Celsius and also the average total rainfall in millimetres for each month.

Siem Reap Climate Graph with temperatures in °C and rainfall in millimetres

Below is a climate graph for Siem Reap, Cambodia with the average temperatures throughout the year in Fahrenheit and also the average total rainfall in inches for each month.

Siem Reap Climate Graph with temperatures in °F and rainfall in inches