There might be a breeze in the summer, but I'm not sure it's from the ocean. I grew up along the water and the breeze was almost constant...great for kite flying, but sometimes you just wanted calm air...
It gets hot, it gets hot in other parts of the country, too. The thing here, everyplace is air conditioned so you get a respite from the heat. Everyone has a different tolerance for the warm temps and humidity, some are more impacted than others, but there is always something to do...lots of indoor activities and in the evenings, the air isn't quite as warm.
Remember, you'll get a nice breeze when you ride around in your golf cart...