Taking into account the local weather in Jardim Praia Grande can help you maximize your time at the pool during your trip. The hottest months are usually February and January with an average temp of 77°F, while the coldest months are July and August with an average of 67°F. The rainiest months in Jardim Praia Grande are January, February, March, and December, with each month seeing an average of 11 inches of rainfall.