São Sebastião, São Paulo

São Sebastião
Municipality of São Sebastião
Panoramic view of Camburi Beach
Historic Center
Rua da Praia
Hope House
Samambaiaçu Waterfall
Motto: 
Pavlistarvm Vigilarivs
Location in the state of São Paulo and Brazil
Coordinates: 23°48′28″S 45°24′10″W / 23.807837°S 45.402709°W / -23.807837; -45.402709
Country Brazil
RegionSoutheast
State São Paulo
Metropolitan RegionVale do Paraíba e Litoral Norte
SettledMarch 16, 1636
Government
  MayorFelipe Augusto (PSDB)
Area
403.336 km2 (108.2 sq mi)
  Metro
2,373 km2 (916.2 sq mi)
Population
 (2020)
90,328
  Density220/km2 (830/sq mi)
Time zoneUTC−3 (BRT)
HDI (2010)0.772 – high
Websitewww.saosebastiao.sp.gov.br

São Sebastião (Portuguese for Saint Sebastian) is a Brazilian municipality, located on the southeast coast of Brazil, in the state of São Paulo. The population in 2020 was 90,328, its density was 185/km2 and the area is 403 km2. The Tropic of Capricorn lies 25 km north. The municipality existed since 1636 and formed a part of the old hereditary captaincy of Santo Amaro.

The archipelago municipality of Ilhabela is located on the east coast of the city; the largest island of the archipelago is also called São Sebastião. Between the city and the island, there is the São Sebastião channel with 30 kilometres in length, and variable width (2 km being the shortest crossing). There is an oil terminal at the channel, owned by Transpetro, a subsidiary of Petrobrás.

The city is famous for its beaches, which makes it a popular tourism destination, especially for people from the state of São Paulo. Near the boundary with Bertioga, there is a small Guarani village managed by FUNAI. In 2024, it was elected by Time Out magazine as the third most underrated travel destination in the world.