Not so beachy keen rules for the holiday

New York’s unofficial start of summer will officially be low-key.

City beaches are closed to swimming and activities like sunbathing will be limited to crowds of 50% normal activity. Barbecuing is banned, too, though gatherings of up to 10 are allowed, according to Gov. Cuomo.

Surfing and wading ankle-deep in the water will be permitted, officials said. No lifeguards will be working.

The rules apply to Coney Island in Brooklyn, Orchard Beach in the Bronx and Rockaway Beach in Queens.

If people break the rules, the city will eventually put up fences and shut down the sites, Mayor de Blasio recently warned.

Nationally run beaches like Riis Park in Queens and Great Kills Park on Staten Island will also be open to the public, but closed to swimming.

“When you go into Memorial Day, think about the many, many ways you can enjoy it … but be smart about how you approach it,” Hizzoner said at a Friday news conference.

State-run

Jones and

Robert Moses beaches on Long Island will allow swimming, but will operate at 50% capacity.

Long Island’s locally run beaches, like Nassau County’s Nickerson Beach, will only be open to residents of the area, officials said.

City parks will be open, though visitors will be expected to observe social distancing guidelines. The authorities have painted white circles 6 feet apart from one another in some sites, so people get the idea.

“We will have the Parks Department out there in force to get the word out,” de Blasio said.

Forty-five miles of streets will be closed to vehicular traffic so people have an alternative to parks.

While all Memorial Day parades have been canceled, the Intrepid Sea, Air & Space Museum will hold an online ceremony.