The beach will definitely be closed for swimming, ie no lifeguards or buoys. I assume the park is open, so if you put your feet in or whatever, you'll probably be ok
I believe they close after labor day.
I would call the park directly to confirm lifeguard duty times. But there are several Sandy swimming areas along the shores
I dont know if the beach is closed or not, but we've had very warm weather recently so I'm sure the water would be pretty nice. Generally though, places around here start buttoning up after Labor Day.
Thanks! Your answer is awaiting moderation.