If you’re hoping to get lost in the rain on your romantic getaway, take a look at these details about year-round temperatures in João Pessoa: The hottest months are usually March and February, with an average temperature of 27°C, while the coldest months are August and July, with an average of 25°C. The rainiest months in João Pessoa are July, May, June and April, with each month seeing an average of 194 mm of rainfall.