When you're dreaming of a escape to Mirití-Paraná, be sure to take into account the year-round temperatures. The hottest months are usually September and October with an average temp of 77°F, while the coldest months are July and August with an average of 76°F. The rainiest months in Mirití-Paraná are May, April, June, and July, with each month seeing an average of 17 inches of rainfall.