In truth the site out on the beach in the sun are cooler in the summer. Especially if you get a site facing the ocean. Then you will be in the shade of you RV, and awning from noon to dark.
We were in the trees once, and they nearly cooked us. The breeze out in the beach sites keep you so much cooler. And we also kept a fan running under the awning. Another way to be cooler is to get a sandy site. The paved sites are 10+ degrees hotter, and don't cool at night like the dirt / sandy sites do.
Terry & Shay
Coachman Apex 288BH.
2013 F150 XLT Off Road
5.0, 3.73
Lazy Campers