: / It depends if you want to boild yourself or not :)) it is the hotest time of the year and lucky people go to the beach; so coast side should be full of foreigners and spanish wishing to have a nice holidays and nice tan.
If you want colder weather, North is better then. I have heard Barcelona is a nice place (never been, im from the South)it´s a big city, it has beaches, and im sure there are lots of things to do in summer; i dont know about the festivals; im sure there are lots of them over thre too. what kind of festivals are you talking about??? music, i guess , but what kind? or are dance festivals?
If you prefer other not such urban trip, over the south you can also find a different way to spend your holidays. you have monuments like Alhambra in Granada or visit the natural park of Cabo de Gata in almería. (sevilla is not a good place to go in August but it´s a beautiful place known by his “colours and light”) Málaga is the touristic place by excelence and i dont recommend it to you unless you want to be another foreigner in a place full of them…well,you can always find a good place in that full of t. area.
This is long,
bye