We have gone to Rosemary Beach for the past two summers, Mid to early June. That time suits our schedule and we love it. The temps are about 90 degrees, although this yr closer to 95. The place is not too crowded - easy to get chair rentals. The thing I HATE is the June grass. It is disgusting and you have to walk quite sways out to get past it. Our kids like to play in the shallow so they are always in it. One day it was not there and I was able to see what we were missing.
This year, we may have to go in July. I am hoping this means no JUNE grass:) how is everything else? Heat? Crowded? We will no go 4th of July so that is not an issue. Probably late July. Maybe first wk of August.