Portugal has a long coast with many beaches.
Around Lisbon more than 20 beaches at less than 1 hour of travel by car.
You can see some description of the beaches in some other pages:
https://theculturetrip.com/europe/portugal/articles/the-most-beautiful-beaches-in-lisbon/?utm_content=buffer36468&utm_medium=pinterest&utm_source=pinterest&utm_campaign=buffer
Don´t forget to protect from sun and adjust your protection to yourself.
Surf
https://www.surfholidays.com/blog/top-7-lisbon-surf-spots
Portuguese