In reply to Lilbug2019:
There are a couple of guidebooks. I've used both and thought that this one; http://www.climb-europe.com/rockclimbingshop/Riglos-Vertical-Rock-Climbing-... was the better of the 2. Both are in the bar at the refugio and you can take photos of them as necessary.
It will be really hot in July. We went mid March this year and in the sun it was already quite warm, climbing in t'shirts. I wouldn't want to be on those faces in the sun in July. There are some shady sectors around the back of the Pison, but that is not where the best routes are.
Gear wise; it depends on what you're used to and what you intend to climb. For the trad routes double 60m ropes and a full rack. For the multipitch sport routes 20 quickdraws and a either a 70m single or doubles.
There are other groups of towers within a short drive and they apparently have more shady sectors that would be good in the summer.
Edit; Steve Bancroft. Yes, THE Steve Bancroft lives in Riglos and he is always happy to give good local advice of the other areas.
Have fun.
TJB.
Post edited at 07:44