The beach is positioned at the exact transition point where the Tejo River meets the Atlantic Ocean.
It is overlooked by the historic Palácio Real de Caxias, a 17th-century royal summer residence.
The beach is located directly below the N6 coastal road, known as the Marginal, which connects Lisbon to Cascais.
The area experiences significant water salinity variations due to the influx of fresh water from the Tejo estuary.
Caxias Beach is a small, sandy coastal strip situated at the mouth of the Tejo estuary in Oeiras. The beach is bordered to the west by the mouth of the Ribeira de Barcarena and is directly adjacent to the Linha de Cascais railway tracks. The shoreline features a mix of sand and pebbles, influenced significantly by the tidal patterns of the river estuary. It provides a direct view toward the Bugio Lighthouse and the horizon of the Atlantic Ocean. The area is maintained as part of the wider coastal revitalization projects in the Oeiras municipality. Infrastructure includes a small seawall and pedestrian access points from the nearby residential areas of Caxias.
From the pedestrian walkway looking westward toward the mouth of the Ribeira de Barcarena.
Check the tide charts before visiting, as high tide significantly reduces the available sand surface area.
Use the pedestrian underpasses to cross safely from the village side to the waterfront.
Avoid swimming in the water immediately after heavy rainfall due to potential runoff from the river.
Standard beach attire; public nudity is prohibited.
