Weather is probably a major factor when you plan your trip to Hienghene, and keep in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually February and January with an average temp of 77°F, while the coldest months are August and September with an average of 69°F. The rainiest months in Hienghene are March, January, February, and April, with each month seeing an average of 7 inches of rainfall.