The epicenter of surfing in the Charleston area is Folly Beach, which plays host to all but one of the area's surf contests, most notably the female-only Folly Beach Wahine Classic in June and the Governor's Cup of Surfing championships for the Southern South Carolina district of the Eastern Surfing Association.
Ask the sailors. The Charleston area's coastline is reliably windy and that makes for great kiteboarding, particularly on the ends of Sullivan's Island and Isle of Palms near Breach Inlet.
And when the wind isn't blowing and the waves aren't up, another alternative to go by board is stand-up paddleboarding. The activity has spread wide and fast across the Lowcountry, particularly on the tidal creeks and rivers.
Another great way to get out in Lowcountry waterways is to go by kayak. Don't have one or want to buy one? No worries. There are plenty of outfitters on the islands and nearby towns.