the return of the rainfall in the city plays an important role for the local vegetation and rainforest, that thrive, once the winter is over.

In September, for any given day, the chances of getting a cloudy day rise to 47%, and the chances of getting rain are 38%. 

the wind remains mild, and the dew point and humidity will continue to drop, making the atmosphere relaxing and light. - During the course of september days will get longer and, by the end of the month, rio will have nearly 12 and a half hours of sunlight.

the 22nd of september is the official start date of spring, and it calls for celebrations such as an orchid festival, for local farmers and enthusiasts.