5th Annual Harvest Moon Festival in Onset, MA – September 26, 2026
Looking for a fun fall event on Cape Cod? Add the 5th Annual Harvest Moon Festival in Onset, Massachusetts to your September calendar! This popular end-of-summer celebration brings together classic cars, local vendors, food trucks, live music, and plenty of family-friendly fun for a festive day by the water.
📅 Saturday, September 26, 2026
⏰ 10:00 AM – 4:00 PM
📍 Lillian Gregerman Bandshell, 1 Union Avenue, Onset, MA
🌧️ Rain Date: Sunday, September 27, 2026
🎟️ Free to attend
The Onset Harvest Moon Festival is a great way to welcome the changing season while enjoying one of the Cape Cod area’s charming waterfront villages. The festival features a classic car show, more than 100 craft, merchandise and service vendors, food trucks, live music, and additional family activities.
🚗 Classic Car Show
Car enthusiasts won’t want to miss the classic and antique car show taking place around the Onset waterfront. Due to its popularity, car participants must pre-register, with limited space available.
🎶 Live Music
The bandshell will be rocking throughout the day with live entertainment, making this more than just a fall craft fair. The 2026 lineup includes Daddy O!, Whiskey Saints, The Morning Afters, and Cape Coda.
🛍️ Shop Local Vendors
More than 100 craft, merchandise, and service vendors are expected throughout the festival, making this a fun opportunity to browse local makers, artists, small businesses, and unique finds.
🍔 Food Trucks & Family Fun
Grab something delicious from the food trucks, listen to live music, check out the cars, and enjoy a day exploring Onset Village and Onset Bay. Additional activities are also planned for the festival.
🍂 A Perfect Cape Cod Fall Day
One of the best things about Cape Cod in September is that summer isn’t quite over, but fall is starting to make an appearance. The crowds begin to thin, the air gets a little more comfortable, and there are still plenty of Cape Cod fall events, festivals, craft fairs, and family activities happening.
The Harvest Moon Festival is a great excuse to spend a September Saturday in Onset, stroll around the waterfront, enjoy some live music, grab lunch from a food truck, and soak up that early-fall Cape Cod feeling.
If you’re searching for things to do on Cape Cod in September, fall festivals on Cape Cod, family-friendly fall events near Cape Cod, or Onset MA events, this is one to put on your list!
📍 Event Location:
Lillian Gregerman Bandshell
1 Union Avenue
Onset, MA 02558
🗓️ Date: Saturday, September 26, 2026
⏰ Time: 10 AM–4 PM
🌧️ Rain Date: Sunday, September 27, 2026
🎟️ Admission: Free