You can't come to Barcelona without experiencing a meal on an amazing, sun soaked, romantic and charming patio. Whether you're in the Old City, Gracia or the Eixample neighborhood, Barcelona's outdoor dining options are tremendous. From small and quaint and hidden amongst the windy alleyways of the Gotico and Born, to the wide open spaces in Plaza Del Sol and Rius Taulet, to the posher ones on Enric Granados, the city is full of trendy, cool and fun places to dine outdoors. Since Barcelona's weather is quite temperate, most patios are open year round and many have outdoor heaters and blankets providing for an even more comfortable experience.
During the summer, during mid-day and the height of the heat, the parasols are perfect for a bit of shady relief. Most restaurants are flexible so if you're in need of shade and can't find a table with an umbrella, just ask as they might have a spare one in the back.
Most Barcelona teraza's don't take reservations, especially at night, so if you're craving an outdoor meal be sure to get there before the dinner rush (around 10pm in Spain). There are a few however that do reserve, such as El Salon and En Aparte.