The beaches of Barceloneta and San Sebastian are closest to the city centre, and therefore are the most full. They have rows of bars and free WiFi, which tends to attract the tourists. However, there are five more beaches in the city and the further down you go, the less busy they become.

Barcelona's beaches are among the most visited in Europe and can be extremely busy, particularly from late May through September. Barceloneta Beach, being the closest to the city center and Metro stations, is the most crowded; during July and August, it is often a "sea of umbrellas," and finding a square meter of sand can be a challenge after 11:00 AM. For a slightly less congested experience, locals often head further north to beaches like Bogatell or Mar Bella, which are still bustling but offer more breathing room. On weekends and public holidays (like the San Juan festival in June), the beaches become a 24-hour social hub with music and crowds. During the "low season" (November to March), the beaches are quiet and perfect for walking or enjoying a seaside cafe, as the Mediterranean water is too cold for swimming. If you prefer quiet beaches, it is best to take a 30-minute train ride outside the city to coastal towns like Castelldefels or Sitges, where the sand is more expansive and the atmosphere is considerably more relaxed than the urban frenzy of the city's main shores.