Take off to St. Simon's Island. We have a house right on the coast and it's a very quiet, nice town. No tourists. Perfect for a quiet weekend. About a four hour drive. Later, QD.
I went there last year. Basically, stay in Savannah and go to Tybee for one or two days. It's not bad, but they're right. Water is clowdy.
You could have fun body-boarding, which I did. It was pretty wavy and windy.
Other than that, if you have to have a nice beach, I'd go somewhere else.
I got free clear tails with my ride.....