Weather is probably a major factor when you plan your trip to Veun Sai, but bear in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually March and April, with an average temperature of 27°C, while the coldest months are January and December, with an average of 24°C. The rainiest months in Veun Sai are July, August, September and June, with each month seeing an average of 566 mm of rainfall.