I'm grouchy and miserable when I'm too hot, so have the air con in the car on it's coldest setting when the weather's hot. DH likes his side of the car warmer, so now we buy cars with dual zone climate control, it keeps us both happy!
Even living literally a couple of hundred yards from the beach it's been dreadfully hot here, even the sea breeze was too warm to do any good, and we had lots of sea frets, cool water, warm land, thick mist!
We have an air conditioning unit in the bedroom as I can't sleep at all in very hot weather, but it makes the room feel airless, I'd rather have the windows wide open, but it's been far too hot!
Yesterday was overcast, quite windy and cooler, it was bliss!