Best Things To Do on Long Island with Kids August 2025

There are tons of things to do in August on Long Island–enjoy outdoor movies and concerts, summer festivals, and the best beach days. After all, summer isn't over yet!
Make the most of the last month of summer with our hot list of things to do on Long Island in August, including one of the scrappiest sights on LI, the Riverhead Cardboard Boat Race, which features vessels made exclusively from cardboard, duct tape, and paint.
Additionally, the Paumanauke Native American Festival returns to Tanner Park, featuring Aztec and traditional Native American dances, authentic Native American foods, and other cultural celebrations. Hot Wheels Monster Trucks Live is ready to make August on Long Island even hotter as Glow-N-Fire lights up the UBS Arena. And it's on like Donkey Kong this month as the Cradle of Aviation once again hosts the Long Island Retro Gaming Expo.
Read on for all the ways to pack your calendar this month on Long Island!
More Great Things to Do with Kids in August on Long Island
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Places featured in this article:
Downtown Riverhead
Cradle of Aviation Museum
Tanner Park
Alive After Five
UBS Arena at Belmont Park
Babylon Village
Smithtown Historical Society