Taking into account the local weather in Igarape-Acu is an important factor for planning your visit, especially if you plan to spend your trip poolside. The hottest months are usually October and November with an average temp of 81°F, while the coldest months are July and June with an average of 79°F. The rainiest months in Igarape-Acu are March, April, February, and May, with each month seeing an average of 18 inches of rainfall.