Great South Bay Music Festival hits 18 years and is not slowing down. Long Island’s largest four-day music and arts festival returns to Shorefront Park in Patchogue Village from July 23 to 26, 2026, with 55 performers across three stages covering classic and contemporary rock, jam, pop punk, alternative, ska, reggae, funk, and more. Tickets are on sale now at greatsouthbaymusicfestival.com, with GA, VIP, Ultra VIP, two-day, and four-day packages available. Children under 10 are free.
Each night has its own identity. Thursday opens with a throwback to the late ’90s and 2000s alternative and emo scene, headlined by The Used alongside Cartel, KOYO, and Deadlands. Friday’s Rock-Reggae Beach Party brings the long-awaited return of Sublime, featuring Jakob Nowell (son of original frontman Bradley Nowell) alongside original bassist Eric Wilson and drummer Bud Gaugh, in their only New York summer appearance, with Common Kings and The Ries Brothers in support.
Saturday is Jam Day, anchored by Govt. Mule featuring Warren Haynes with Bruce Hornsby and the Noisemakers supporting, joined by bluegrass standout Sierra Hull and LaMP featuring Scott Metzger of JRAD alongside Russ Lawton and Ray Paczkowski of the Trey Anastasio Band. Sunday closes the festival with My Morning Jacket headlining a genre-defying two-and-a-half-hour set, with Little Feat appearing on their Last Farewell Tour.
Beyond the music, Great South Bay continues donating a percentage of every ticket sold to the GSB-Stony Brook Cancer Center Fund, having raised well over a quarter million dollars to date. The festival also provides booth space to local organizations supporting causes including battered women’s advocacy, homelessness, pet rescue, and voter registration, reinforcing a community commitment that has always run alongside the music.