São Jacinto Beach next to Canal da Barra at the southern end of a long strip of land that separates the Ria de Aveiro from the sea, parish of São Jacinto, municipality of Aveiro, Central Portugal
 
São Jacinto is bordered to the east by the estuary and to the west by the Atlantic Ocean and to the north by the São Jacinto Dunes Natural Reserve, which gives it unique characteristics.

On the limits of the São Jacinto Dunes Natural Reserve, which is a protected area where unique species of fauna and flora are preserved and the beach has extensive sand in an almost wild state.

The São Jacinto Dunes Natural Reserve (960 ha and 210 ha of maritime space) in the Ria de Aveiro on a narrow sandy peninsula separating the salty and brackish waters to which the Vouga gives a sweet tone.

The dune range extends along the Atlantic, consolidated by spontaneous vegetation such as starton, sea thistle, soldanella and confined to a forested area with maritime pine and acacia from the end of the 20th century. XIX with the aim of fixing the sands.

On the ocean front you can observe seabirds, especially waders during migration season.

The ponds support a variety of aquatic vegetation created in the 1980s to serve as a refuge for a colony of herons.

An extensive walkway between the waters of the estuary and the beach allows us to discover the attractions of a spit of land that was once an ocean.

The beach offers excellent conditions for surfing and long walks on a stretch of sand that stretches north with no end in sight.

Its crystal clear waters make this beach popular in the summer and very popular with surfers and bodyboarders.

Praia de São Jacinto is associated with the fishing village of the same name located north of the north jetty of Barra de Aveiro. It has an extensive sandy beach in an almost wild state and with primary dunes in development, as it benefits from the fact that it is located to the windward side of the currents in front of the jetty.

The road begins in the town of São Jacinto, along the fence of the military area of ​​operation of Infantry Regiment No. 10 (RI10) in an area of ​​public use that allows open and free visits, by land, to the north pier.

In the autumn period, the beach becomes a crossing point for seabirds such as gannets, millers, shearwaters, gannets and various seagulls.

The beach is a great place for leisure and an excellent place for holidays at any time of year and is one of the most famous on the Portuguese coast.

The most direct transport to get to São Jacinto is the Ferry-Boat that crosses the Ria in regular connections and by land it is necessary to go to Torreira or Ovar and continue south to São Jacinto.

Visitors can go by bus to Forte da Barra, crossing the Ria de Aveiro by speedboat or Ferry-Boat (where it is possible to cross by car).

The beach has a parking lot, fully equipped changing rooms, bar, sanitary facilities, showers, classified as a Golden Beach and with a Blue Flag, it is the best in the municipality of Aveiro.