Weather will likely play an important role when you plan your trip to Trang Dinh, and keep in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually July and June with an average temp of 80°F, while the coldest months are January and December with an average of 61°F. The rainiest months in Trang Dinh are August, June, July, and May, with each month seeing an average of 10 inches of rainfall.