Just south of Praia do Guincho, you will find a smaller and lesser known beach called Praia da Cresmina. This surf spot is a mixture of a beach and reef break with a left on the south end of the beach and other peaks on the north side.
Cresmina works with similar conditions as Guincho. It is very exposed to all the elements of the Atlantic ocean, but is a bit more sheltered from the wind. It’s worth checking, especially since it’s normally less crowded than its bigger brother.