Weather is probably a major factor when you plan your trip to Tan Phu, and keep 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 temp of 82°F, while the coldest months are January and February with an average of 79°F. The rainiest months in Tan Phu are July, September, August, and June, with each month seeing an average of 17 inches of rainfall.