São Sebastião is a municipality located in the state of São Paulo, Brazil. It is situated within the coastal region of the state, characterized by its proximity to the Atlantic Ocean and its position along the northern coast.
The city serves as a regional hub for tourism and local commerce. It is known for its coastal geography, which includes beaches and natural landscapes that define the area's identity. While it shares a name with other locations in Brazil, this specific municipality is distinct to the São Paulo coastline.