 You can surf in the Delaware beaches before and after lifeguards are on duty, generally before 10 and after 5. Check with your local beach town. In Ocean City, lifeguards in the stands 10 a.m. to 5.30. They have dedicated surf beaches. They change each day. Today, 46th Street and 126th Street. Now, last month, the inlet was often open, but now that the crowds are really picking up, the inlet is closed to surfing. The inlet beach, that is.