Weather will likely play an important role when you plan your trip to Teresópolis, 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 22°C, while the coldest months are July and August, with an average of 18°C. The rainiest months in Teresópolis are December, November, January and March, with each month seeing an average of 318 mm of rainfall.