Portinho da Arrábida, Statistical zone in Setúbal, Portugal.

Portinho da Arrábida is a small coastal place in the parish of São Lourenço, municipality and district of Setúbal, set in the Serra da Arrábida within the Arrábida Natural Park. It lies on a small bay with a rocky beach that becomes sandier toward the east, about 13 km west of Setúbal and 21 km east of Sesimbra, with the Atlantic to the south near the mouth of the Sado. The place has a residence, two restaurants partly over the sea, and five points of interest: the Oceanographic Museum, Pedra da Anicha, Praia do Creiro, the Creiro archaeological site and the Portinho beach.

The Creiro archaeological site at the foot of the Serra da Arrábida was first recorded in 1907 in a draft archaeological map of prehistoric and Roman sites around Setúbal. It is only partly excavated and can be entered freely. The Chapel of Lapa de Santa Margarida, built in the 17th century inside a sea cave, held images of Our Lady of the Conception, Saint Anthony and Saint Margaret; only one image survives, kept in the Convento da Arrábida.

The name Portinho, "little port", reflects the sheltered bay used by boats near the mouth of the Sado. Two restaurants stand partly over the water on the western side of the beach. In summer the cove fills with visitors and jet skis, while the rocky shore gives way to sand towards the east.

You can enter this area through mountain roads that link the various settlements within the zone. Weekend traffic restrictions apply to some routes, so plan your driving accordingly if you visit during those times.

The rocky outcrop Pedra da Anicha, about 100 metres offshore, is a zoological reserve of the Arrábida Natural Park for its marine fauna and algae, yet it is also used for spearfishing, a practice whose legality is disputed. Underwater, the beach's seabed is likewise a nature reserve where spearfishing is banned.