This long arc of sand is the most popular beach in the city, packed with tourists in the summer. Once autumn kicks in, its the best spot to score waves. Usually windswell from local weather systems, so expect wind and rain - but when the period picks up the waves clean up and can pump. Don't wait - swells might only last hours so be on it - the locals will be - in frenzied packs!
Source: Barceloneta Surf Guide