Weather will likely play an important role when you plan your trip to Ota, 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 81°F, while the coldest months are December and January with an average of 77°F. The rainiest months in Ota are September, August, October, and June, with each month seeing an average of 10 inches of rainfall.