Weather will likely play an important role when you plan your trip to Cachoeira Paulista, 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 June, with an average of 17°C. The rainiest months in Cachoeira Paulista are January, December, November and February, with each month seeing an average of 205 mm of rainfall.