Serra do MarClimate Diagram Brazil / Travel & Tours – Due to its vast extension, the climate of Serra do Mar State Park, in the State of São Paulo, is very variable. Generally speaking, from north to south, it can be described as a humid tropical / subtropical climate. Average yearly precipitations vary from 1500 to 4000 mm (Serra de Cubatão) and temperatures from 20 to 24 ° C. See also: Guided Tours