Getting an idea of what to expect from the weather in Banteay Chhmar will help you enjoy your stay to the fullest. The hottest months are usually March and April, with an average temperature of 29°C, while the coldest months are December and January, with an average of 26°C. The rainiest months in Banteay Chhmar are September, October, August and July, with each month seeing an average of 230 mm of rainfall.