Blog Entry: Rainfall and Temperature in Siem Reap ----------------------------------------------- The Average Rainfall of Siem Reap The graph shows the average rainfall in millimeters over a year in Siem Reap. The minimum rainfall is in January. It is 6 mm. Then it starts to rise and reaches the highest point in September. From May to September, there is a lot of rain. The rainfall reaches 266 mm. After that, it begins to drop and goes down to 11 mm in December. ----------------------------------------------------------------------------------- The Average Temperature of Siem Reap The graph shows the average temperature in degree centigrade over a year in Siem Reap. The coolest month is December. The temperature is 25°C. The hottest month is April. It is 31°C. From January to April, the temperature goes up. After April, it goes down slowly until December.