Luann de Lesseps, the former countess and “Real Housewives of New York” star, is moving upstate to the Catskills.

The news comes a day after The Post exclusively reported that she was listing her Hamptons home for rent during the month of August for $150,000.

De Lesseps is also listing the same Sag Harbor home for sale — for $6.25 million. (It will still remain for rent.)

She also announced, via Instagram, that she is moving upstate. The post mentioned peace, serenity and mountains – pretty much the opposite of the East End.

The bold move is striking considering that de Lesseps has been a fixture on the Hamptons social scene, and her East End antics have provided endless fodder for the “RHONY” show.

“She loves the Hamptons, and her house, but it’s time for a change,” a friend says. “The Hamptons is changing, and she’s looking elsewhere to summer. She’s in love with the Catskills.”

Her recently renovated historic Sag Harbor home is a cozy 2,500 square feet. It features four bedrooms and four bathrooms.

Details include a chef’s kitchen, three fireplaces, French doors leading to an outdoor deck and a dock.

The home, on nearly a third of an acre, also includes a great lawn and a separate, “fully winterized” studio with a full bathroom.

De Lesseps bought the charming house for $2.43 million in 2013.

There are “white, light, bright interiors” and water views throughout, notes listing broker Christopher Burnside, of Brown Harris Stevens.