City offers plenty for laborers looking to stay close to home this weekend

T he sun has almost set on summer, but there’s still time to have a (beach) ball before autumn arrives. Follow amNewYork’s guide to late-season delights.

Take a beach day already

You haven’t had a summer unless you’ve splashed around in the ocean or a bay at least once and — tick tock — NYC’s beautiful public beaches shutter Sept. 9. Grab your bathing suit, sunscreen, blanket and umbrella and head directly to a sandy stretch where you can swim, chill and build a dream house with just a pail and the stuff beneath your feet. Sand castles are real estate everyone can afford. Better yet, acting like a kid on a beach day is good for you. It “generates optimism,” notes the National Institute of Play, and “gives the immune system a bounce.”

Book a quick island getaway

Wedging a body of water between you and your to-do list is a great way to pull a Houdini-esque escape. Governors Island — a short, ferry ride from Manhattan and Brooklyn — offers just such a getaway. Ashore on the 172-acre oasis, you can skate on the new rink while gazing at Lady Liberty, savor a beach read, catch zzz’s in the breeze or drink in a view of lower Manhattan while sipping cocktails at Island Oyster and other hot spots.

Relax on a rooftop

James Taylor was right: “Cares just drift right into space” in the right place — namely, up on a roof. One option: Make Believe, a tropical-themed bar on the roof of the Sixty Hotel in the Lower East Side that features two outdoor terraces. Or try a Plan B, as in Brooklyn: Accompany a pal who belongs to buzzy new DUMBO House, where it’s easy-breezy and a rooftop pool awaits — but only for a few more weeks.

Watch a flick or play al fresco

Cinema under the stars is a favorite free, summer pleasure. Mother Nature’s multiplexes are winding down but you can still get these film fixes: “My Cousin Vinny,” featuring Marisa Tomei’s Oscar-winning turn, is at Parklife’s outdoor space in Brooklyn Monday; “Rogue One: A Star Wars Story” beams into Randall’s Island Park Sept. 9; and “Scarface,” a coke-fueled film starring Al Pacino, runs at the rooftop cinema at SoHo’s Hotel Hugo Monday. (For more free summer movies, check out nycgov In the mood for open-air theater? “The Gospel of Colonus,” which retells a classic by Sophocles in a black Pentecostal service, runs Sept. 4-9 at the Delacorte Theater in Central Park. It’s presented by the Public Theater and Onassis Foundation USA.

Go wild for watermelon

Juicy and jewel-toned, watermelon is a summer MVP. “It’s a perfect summer treat,” says nutritionist Lisa R. Young, author of “Finally Full, Finally Slim” out in January. “Watermelon is rich in vitamins A and C and fiber and relatively low in calories.” It’s versatile too — use it in salsa, salads, sides or a fruity finale for your picnic or barbecue. At Social Drink & Food at Green Fig in Midtown, the fruit stars in a watermelon pisco cocktail ($15) and the hoisin-marinated grilled watermelon steak ($7).

Paddle up

Ahoy, free kayaking around the boroughs is an ideal way to get a fresh perspective and burn some calories. Many companies, including Red Hook Boaters in Brooklyn, Manhattan Community Boathouse at Pier 96 or Kayak Staten Island, are open into September to help float your boat. At most places, it’s first-come, first-served.