If you’re hoping to get lost in the rain on your romantic getaway, check out these details about year-round temperatures in Cajueiro da Praia: 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.