Summer is hot here in Catalonia, but our beloved Montserrat has always something good to offer.
The North face is a good option for hot summer days. You can choose among a good number of small sport climbing sectors. The most are in shade in the afternoon or in the morning, but you also have a couple of good spots for a whole day of climbing.
Routes in general are more tough then on the south face and grades between 7a and 7c+ prevail, but you can find interesting itineraries for almost everybody.
Here a good attempt on La joya de la corona, a very long and aesthetic 8a+ at the sector Colonia Puig: