Cairu is a municipality in the state of Bahia in the North-East region of Brazil. The municipality consists of three islands: the Island of Cairu, which is only separated from the mainland by a narrow river; Tinharé Island, which has the dense tourist settlement of Morro de São Paulo to the north; and Boipeba Island.

Morro de São Paulo is one of 5 villages of the island of Tinharé in the municipality of Cairu, located in the state of Bahia, Brazil. The main beaches of the Morro de São Paulo are located on east side of the island. They are: Primeira Praia, Segunda Praia, Terceira Praia, Quarta Praia and Quinta Praia. The settlement was home to a large Tumpinamba population prior to the arrival of the Portuguese. A Portuguese colony was established as early as 1535. The settlement is a site of large-scale tourism, and has three registered historic sites.