Hi Deebie, Graptoveria 'Fred Ives' can take our full sun and I know at a certain point when temps are just soaring way too high, they slow down, till temps return to favorable ones. And it is nice in the afternoons when heat is so intense the city trees gives them part shade. But this succulent really likes as much light as it can get and it goes into that cold stressed color changes which I really like to see in winter to spring.
Just be careful which ones you will hang up, some succulents prefer part sun/shade and may burn or dry out way too fast so their ideal growing location is still close to the ground in some shade, or they may not like being too exposed in cold air. I can get away with it since we have more periods of low humidity here. It is only in late Fall to winter do we have rains here, and thankfully by that time, most of my succulents are waking up from their summer hiatus.
