Weather is probably a major factor when you plan your trip to Tentena, but bear in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually October and September, with an average temperature of 25°C, while the coldest months are September and January, with an average of 25°C. The rainiest months in Tentena are April, March, May and November, with each month seeing an average of 405 mm of rainfall.