Weather will likely play an important role when you plan your trip to Caraguatatuba, but bear in mind that cheaper options are usually available when the weather isn’t as good. The hottest months are usually February and January, with an average temperature of 24°C, while the coldest months are July and August, with an average of 20°C. The rainiest months in Caraguatatuba are January, February, March and December, with each month seeing an average of 271 mm of rainfall.