Weather will likely play an important role when you plan your trip to Fua'amotu, but bear in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually February and March, with an average temperature of 27°C, while the coldest months are August and September, with an average of 23°C. The rainiest months in Fua'amotu are February, March, January and April, with each month seeing an average of 291 mm of rainfall.