In reply to Mike_Bottom: It's going to be toasty hot in summer! Forada north could be a good bet. If you're prepared to get up early / or head out late to avoid the heat, then consider:
Echo valley - lovely setting, plenty of fine routes both single & multi-pitch, trad & sport;
Penon de Ifach - location is first class, some of the climbing is very polished though;
Olta - catches a breeze so could be nice and cool, some nice routes in a superb setting;
Toix - the sea cliffs are pretty awesome, just don't go when the sun's on them! HOT
HTH
Mark