Weather will likely play an important role when you plan your trip to Penida Island, and keep in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually November and October with an average temp of 80°F, while the coldest months are August and September with an average of 78°F. The rainiest months in Penida Island are December, January, February, and March, with each month seeing an average of 15 inches of rainfall.