Taking into account the local weather in Hoai Nhon is an important factor for planning your visit, especially if you plan to spend your trip poolside. The hottest months are usually June and May with an average temp of 84°F, while the coldest months are January and February with an average of 73°F. The rainiest months in Hoai Nhon are November, October, September, and December, with each month seeing an average of 18 inches of rainfall.