61 Free Activities in NYC September 2025 for Kids

Italian pride—and tasty eats—are on the menu at the annual Feast of San Gennaro, which takes over Little Italy in September. Photo by Jody Mercier
Italian pride—and tasty eats—are on the menu at the annual Feast of San Gennaro, which takes over Little Italy in September. Photo by Jody Mercier
9/1/25 - By Drew Kristofik

Back-to-school season can be expensive, but we've found 61 free things to do in NYC with kids this September. Our picks for free things to do include the last few bites of summer fun at Little Italy's Feast of San Gennaro, the big Brooklyn Book Festival (with a special appearance by Mommy Poppins herself, Anna Fader!), and a Mommy Poppins-sponsored back-to-school bash at Pier 57.

Plus, Broadway is staging a free concert in celebration of NYC's 400th birthday!

Read on for the best free things to do in New York City this September with kids, including events in Brooklyn, Queens, and the Bronx. Find more top events on our always-packed Family Activity Calendar.

More Things To Do in NYC this September with Kids

As always, if an event piques your interest, click through to our listing for all the details, including addresses and times. And keep in mind: Really cool things to do with kids often book quickly, so register or buy your tickets ASAP.

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Places featured in this article:


Brooklyn Bridge Park]

Various Manhattan locations

Perelman Performing Arts Center

Robert F. Wagner, Jr. Park

Williamsbridge Oval Recreation Center

Inwood Hill Park - Pat's Lawn

Brooklyn Bridge Park

Hudson Yards - Public Square and Gardens

LeFrak Center at Lakeside

Miller Theater at Columbia University

Robert F. Wagner, Jr. Park

National Museum of Mathematics Pop Up

Hudson Yards - Public Square and Gardens

Emily Warren Roebling Plaza

National Parks - Multiple Locations

Lincoln Center - Rubenstein Atrium

About the Author

Drew Kristofik
Drew Kristofik’s career took a twist from editing teen magazines to a seven-year stint at MacNeil/Lehrer, followed by a long run at Nickelodeon/Viacom as Director of Content for Nick Online and Editor-in-Chief of ParentsConnect.com. A founding member of the Webby Award-winning GoCityKids, she’s written for Family Fun, Vanity Fair, and New York. Her middle school novel, The Time Boat, is available on Amazon Kindle. Drew keeps the MommyPoppins New York Events calendar spot-on and can be reached at events@mommypoppins.com.