Andrew, I agree with Lynn about doing some experiments and that semps are the opposite of heat loving succulents. This time of the year, just keep them dry or, at most, get a spray bottle and mist a little every few days. If they are out of the hot sun and kept dry, they should just go on hold for a while. Watch for the outer leaves on the rosettes to start to dry up. That is a sign that they need more water, but not a major problem unless it starts to get a substantial part of the rosettes/ I would definitely mist them if you see that, just enough to get the top of the soil damp (it will darken).
Keep them out of the sun. Keep the pots in contact with the ground or even sunk into the ground a bit but dry.
I don't live in your climate, so the advice is based on projecting from what they do here. Please let us know how they do for you as others want to know as well.
