If you’re looking forward to lots of outings with your partner, check out these details about year-round temperatures in Ibiuna: The hottest months are usually February and December with an average temp of 71°F, while the coldest months are July and June with an average of 63°F. The rainiest months in Ibiuna are January, December, February, and March, with each month seeing an average of 9 inches of rainfall.