Praia da Carreagem
4 locals recommend,
Tips from locals
To reach this beach you need to drive for a bit on a (decent) dirt road, then take the access down; usually very few people go here so you might have the beach almost to yourself.
One of my favorite beaches. You need to go with the low tide so you can walk along the coast and discover all the adjacent hidden beaches. It looks like you are inside a dream.