8 am – 5 pm Long Island Celtic Festival and Highland Games Ages: AllFamily Festivals History & Culture Old Westbury GardensOld Westbury
8 am – 5 pm The 2025 Long Island Celtic Festival and Highland Games Ages: AllCommunity Dance Family Old Westbury GardensOld Westbury
9:30 am – 1:30 pm Long Island Nets Summer Fest Ages: AllFamily Festivals Free Jones Beach (Field 4) – Basketball CourtsWantagh
11 am – 6 pm 2025 Seafood Festival Ages: AllFamily Festivals Food & Drink Long Island Maritime MuseumWest Sayville
Noon – 4 pm Heritage Country Fair Ages: AllAnimals Family Festivals The Smithtown Historical SocietySmithtown
Noon – 11 pm Island Park Greek Festival Ages: AllAttractions Family Festivals Panaghia of Island ParkIsland Park
1 – 11 pm Port Jefferson Greek Festival Ages: AllAttractions Family Festivals Greek Orthodox Church of the AssumptionPort Jefferson
2 – 11 pm 30th Annual Holbrook Chamber Carnival & Festival Ages: AllAttractions Family Festivals Holbrook Country ClubHolbrook
4 – 5:30 pm Kirtan: The Power of Mantras and Sacred Chants At Here and Now Yoga Ages: AllClasses Community Family Here and Now Yoga, Wellness & Arts CollectiveFloral Park
6 – 10 pm The Annual Beach Ball 2025 Festivals Low Tide Bar at Sound View GreenportGreenport, New York
Today, 11 am Custom House in Sag Harbor Open for Tours Saturdays & Sundays through October 12 Custom House Sag Harbor
Today, noon Greenport Harbor Brewing Company Presents Contemporary Artist Gavin Zeigler Greenport Harbor Brewing Company’s Greenport Tasting Room
Long Island Press Going Places: Public Theater’s Free Shakespeare in the Park Production of TWELFTH NIGHT Opens Revitalized Delacorte Theater in Central Park
Behind the Hedges Architect Roger Ferris Comes Full Circle in the Hamptons, Designing The Bridge’s First Spec Home