I am in Jacksonville Florida. We see these temps July-September and sometimes longer combined with high humidity. I have found Echeveria do best in morning sun with water 1 to 2 times a week unless we are getting rain. Most of my succulents get shade by noon or shortly after. I do have some that get afternoon sun only they also do well. All of my succulents do great in the heat and humidity except for Sempervivum (but still trying to make them work here also)
In my opinion, for most succulents, protect them from direct sunlight during the hottest part of the day (filtered shade) and they will do well in the heat and humidity.
Good luck.
Andrew
