If you’re hoping to get lost in the rain on your romantic getaway, check out these details about year-round temperatures in João Pessoa: 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 João Pessoa are July, May, June, and April, with each month seeing an average of 8 inches of rainfall.