Taking into account the local weather in Hoa Binh is an important factor for planning your visit, especially if you plan to spend your trip poolside. The hottest months are usually April and March with an average temp of 84°F, while the coldest months are January and December with an average of 80°F. The rainiest months in Hoa Binh are October, September, July, and June, with each month seeing an average of 14 inches of rainfall.