Barcelona offers a summer of endless possibilities. First of all, you can go at any time of day or night to the beach to relax from the bustle of the city. The beaches are connected with the city by the yellow metro line or bus. Barcelona beaches are fairly good taking into account that we are in a city of two million inhabitants
During the day, you can visit the beautiful Sagrada Familia, stroll through the narrow streets of the Gothic quarter, or rambling around it’s most famous street; Las Ramblas. If one gets tired of the heat, you can enter at any of the big shopping malls that are in the city centre. Barcelona offers a wide range of shops at prices to suit every taste.
When the sun goes down, you can enjoy the long and warm Barcelona nights. Start by taking a cold beer on the terrace of a bar, dine at any restaurant of the Gothic quarter, and going out in many bars and clubs you will find alongside las Ramblas.

And here it is a sample of how it can be spending the summer in Barcelona