Weather will likely play an important role when you plan your trip to Itbayat Island, and keep in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually June and July with an average temp of 83°F, while the coldest months are January and February with an average of 74°F. The rainiest months in Itbayat Island are August, September, July, and October, with each month seeing an average of 13 inches of rainfall.