Planning for the weather is an important factor for making your trip to Cajueiro da Praia a success, especially when you’re splurging. The hottest months are usually September and October with an average temp of 82°F, while the coldest months are July and June with an average of 81°F. The rainiest months in Cajueiro da Praia are April, March, February, and May, with each month seeing an average of 10 inches of rainfall.