Baja Malibu is the beach break most San Diego surfers mean when they say the border beaches get heavy. It sits below the toll road north of Rosarito, and the sandbars here can turn a solid swell into thick, hollow peaks that break boards. It is not a mellow wave on a good day. Water quality is the other story: sewage from the Tijuana area reaches this coast, and surfing here in the days after rain is a bad idea.
Take the San Antonio exit on the toll road. The streets down to the beach run through a private community, so access and parking can change. Lock the car and leave nothing in sight.