A new recreational pool and children’s spray area at Sprain Ridge Pool in Yonkers is scheduled to open in July.

PATCH: Westchester County Beach, Pool Openings Announced For Season 
By Michael Woyton​

....“Memorial Day weekend kicks off the summer season each year,” said County Executive Robert Astorino. “And there are few better ways to celebrate than spending a day at the beach.”

According to a county spokeswoman, after Memorial Day, all three beaches will be open weekends only through Sunday, June 18.

Then on Friday, June 23, all county-owned pools and beaches will open on full summer schedules through Labor Day.....

https://patch.com/new-york/whiteplains/westchester-county-beach-pool-openings-announced-season