The beach at Foz do Arelho is a natural wonder. To one side of the large sandy strip is the Atlantic Ocean, to the other side are the tranquil waters of the Óbidos Lagoon. The warm salty waters of the lagoon are ideal for kids and a variety of watersports, they are even said to have therapeutic properties. On the seaward side of the beach the water is considerably colder and the waves can be much bigger. This is a fairly popular surf spot and the waves can get pretty good here.
