Weather will likely play an important role when you plan your trip to Ota, but bear 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 temperature of 27°C, while the coldest months are December and January, with an average of 25°C. The rainiest months in Ota are September, August, October and June, with each month seeing an average of 256 mm of rainfall.