Not OP, but speaking from personal experience and preference, summers in So Fl aren't that bad. It rarely goes above 90, and there's a constant sea breeze. Don't get me wrong, it is hot, but never unbearable.
I spend time north of there and as long as you’re on the ocean summers are awesome. Walking on the beach is just about always great on a hot day since you get sea breeze and can cool off in the water. Not everyone’s cup of tea, but it sure is mine!