Visiting local bars in Tentena is more fun in good weather. These temperatures and rainfall averages can help you decide the best time for bar hopping. The hottest months are usually October and September with an average temp of 77°F, while the coldest months are September and January with an average of 77°F. The rainiest months in Tentena are April, March, May, and November, with each month seeing an average of 16 inches of rainfall.