Taking into account the local weather in Armação do Tairu is an important factor for planning your visit, especially if you plan to spend your trip poolside. The hottest months are usually March and February with an average temp of 81°F, while the coldest months are August and July with an average of 77°F. The rainiest months in Armação do Tairu are May, April, June, and July, with each month seeing an average of 8 inches of rainfall.