May to June and September are deemed to be the best time to visit Barcelona. Balmy weather and slightly fewer tourists make early summer a pleasant time to be in Barcelona. Airfares and temperatures are at their highest from July to August, and it's almost impossible to find good deals. The season is heated up with Sala Montjuic movie screenings and grand sales. You can enjoy swimming in the sea until late September and celebrate La Merce with the locals. October and November see more rains, and that's when Catalan comfort foods like Castanyes i Moniatos are there for you. Christmas and New Year's get more crowded, but Tio de Nadal will keep your mood up! Time from January to April can be labelled 'bargain months' in Barcelona, just don't forget to take a coat with you.