Seaside Grill

Seaside Grill Waterfront marina bar and restaurant located on the beautiful Peconic River, right behind the Hyatt East End Live music is available on weekends.
(263)

The main waterfront restaurant & boat bar are closed for the 2024 season! Sipping margaritas by a on a sunny day right on the water…what could be better during the summer on Long Island? The Seaside Grill, located adjacent to the Hyatt Place East End & Resort Marina, is the newest seasonal hot spot to hit Long Island’s East End. With views of the lush scenery of the Peconic River, along with the b

oats dotting the shore at Treasure Cove Resort Marina, patrons can enjoy brunch, lunch & dinner while sipping a cool drink either poolside or at our waterfront dining area. Choose from an assortment of specialty cocktails, including rum runners, daiquiris, or our signature Seaside Sangria, or enjoy something from the kitchen, including calamari, local oysters, shrimp tacos, and more! Pool access is restricted to hotel and overnight marina guests. Pool hours vary according to season. Location: Behind the Hyatt Place East End inside of Treasure Cove Resort Marina. Attire: Casual

The hotel, located at 451 East Main Street in Riverhead, NY, consists of 100 rooms and suites and is adjacent to Long Island Aquarium & Exhibition Center and Atlantis Banquets & Events, home of the brand-new Sea Star Ballroom. The property boasts 11 meeting spaces, with 17,000 square feet of indoor and outdoor meeting, conference, banquet, and event spaces.

Here comes the weekend!Rock the docks at Seaside!Friday June 19th: Lindsey Reeve Band 6pm-9pmSaturday June 20th: Already...
06/18/2026

Here comes the weekend!
Rock the docks at Seaside!
Friday June 19th: Lindsey Reeve Band 6pm-9pm
Saturday June 20th: Already Taken 6pm-9pm
Sunday June 21st: Mike Friedell 4pm-7pm

Jalen Brunson is cooking… so we figured we should too. 🔥Catch the game with us Saturday at 8:30 PM and try our signature...
06/13/2026

Jalen Brunson is cooking… so we figured we should too. 🔥

Catch the game with us Saturday at 8:30 PM and try our signature Brunson Bomb!

🍗 Wings
🍻 Ice cold drinks
🏀 Knicks basketball
🌊 Waterfront views

Sounds like a winning game plan to us.

It’s time to start thinking about the weekend!Come down and rock the docks at with live music Friday, Saturday and Sund...
06/10/2026

It’s time to start thinking about the weekend!
Come down and rock the docks at with live music Friday, Saturday and Sunday!

06/10/2026
We’ve got a double header going on this Saturday! is making a daytime appearance at Seaside Grill2pm-5pm Saturday June ...
06/03/2026

We’ve got a double header going on this Saturday!
is making a daytime appearance at Seaside Grill
2pm-5pm Saturday June 6th!

We’re back at it again this weekend! Rockin the docks with Friday June 5th 6pm-9pm! Let’s get this summer going!!!!
06/03/2026

We’re back at it again this weekend!
Rockin the docks with
Friday June 5th 6pm-9pm!
Let’s get this summer going!!!!

Address

451 East Main Street (Behind Hyatt Place East End & Resort Marina)
Riverhead, NY
11901

Website

Alerts

Be the first to know and let us send you an email when Seaside Grill posts news and promotions. Your email address will not be used for any other purpose, and you can unsubscribe at any time.

Shortcuts

Share