Salt Air Season: A Summer Guide to America’s Coastal Parks

Gulf Islands National Seashore is the longest stretch of federally protected seashore in the country, running from Florida to Mississippi — quartz sand so white and fine it squeaks underfoot, backed by dunes and old coastal forts.

Down the Panhandle, Grayton Beach State Park pairs that same sand with something genuinely rare: coastal dune lakes, found in only a handful of places on Earth. It shows up on best-beach-in-America lists for a reason. Go early, swim long, let the afternoon storm chase you to a beach bar.

Anastasia State Park guards miles of Atlantic beach and tidal marsh minutes from St. Augustine — and its coquina stone quarries supplied the walls of the Castillo de San Marcos, the oldest masonry fort in the continental U.S. Swim in the morning, walk the oldest city in the country by afternoon.

On the Gulf side of the peninsula, Honeymoon Island earns its spot among Florida’s most-visited state parks the honest way: ospreys in the slash pines, shells on the shoreline, and sunsets that clear the beach into a standing ovation.

Bahia Honda State Park is what people picture when they picture the Keys — water in six shades of blue and the skeletal spans of Henry Flagler’s old Overseas Railway bridge framing the sunset. It’s the rare beach that looks better in person than on the postcard.

No salt, all coast: the Great Lakes are an inland sea with an inland sea’s moods. Sleeping Bear Dunes stacks golden sand bluffs hundreds of feet over Lake Michigan. Pictured Rocks — America’s first national lakeshore — paints mineral-streaked cliffs above Superior. The Apostle Islands hide sea caves you can paddle into when the water behaves.

Summer is the season the big lakes are friendliest. Treat them like the ocean anyway; Superior has earned the respect.

Coast days reward simplicity: a soft tee you can swim-dry in an hour, something long-sleeved for the evening wind, water, and more sunscreen than feels reasonable. Cotton by the campfire, sunset non-negotiable.

And if a stretch of shoreline has ever put you back together, we probably make a shirt for it — printed when you order it, built to outlast the tan line.