Weather is probably a major factor when you plan your trip to Otú, and keep in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually July and August with an average temp of 74°F, while the coldest months are December and January with an average of 73°F. The rainiest months in Otú are May, April, October, and September, with each month seeing an average of 15 inches of rainfall.