You can enjoy almost 5 km of beaches which are all accessible by public transport and have all the necessary amenities for you to swim in the biggest swimming pool of all: the sea.

Yes, swimming is a massive part of local life in Barcelona, with the city's 4 kilometers of coastline buzzing with activity from spring through autumn. The most famous beach, Barceloneta, is popular with tourists because of its proximity to the city center, but locals often head further north to Bogatell or Mar Bella for cleaner water and more space. The water temperature is generally comfortable for swimming from June until early October, peaking around 25°C (77°F) in August. The city monitors water quality daily and uses a flag system (Green for safe, Yellow for caution, Red for no swimming) to inform the public. While the beaches are safe, the biggest "danger" isn't the water—it's petty theft. Locals often take turns swimming so someone is always watching the bags, as professional pickpockets are known to target unattended belongings on the sand while travelers are in the waves.