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.
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The main waterfront restaurant & boat bar are closed for the 2024 season! Sipping margaritas by a on a sunny day right on the waterโ€ฆwhat 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 Islandโ€™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.

Friday, August 28 โ€” Rubber SoulKick off the weekend with Rubber Soul at Seaside Grill! ๐ŸŽถ๐ŸŒ…Join us on the waterfront this ...
08/28/2026

Friday, August 28 โ€” Rubber Soul

Kick off the weekend with Rubber Soul at Seaside Grill! ๐ŸŽถ๐ŸŒ…

Join us on the waterfront this Friday for great music, cold drinks, delicious food, and a summer sunset on the Peconic River.

๐ŸŽธ Rubber Soul
๐Ÿ“… Friday, August 28
โฐ 6PMโ€“9PM

Grab a table, order your favorite drink, and start the weekend at the Seaside! ๐Ÿน๐ŸŒŠ

๐Ÿ“ 451 East Main Street, Riverhead
๐Ÿ“ž 631-574-0127

Sunday, August 30 โ€” Kelli BakerThereโ€™s no better way to close out the weekend than Sunday by the water with Kelli Baker!...
08/28/2026

Sunday, August 30 โ€” Kelli Baker

Thereโ€™s no better way to close out the weekend than Sunday by the water with Kelli Baker! ๐ŸŽค๐ŸŒŠ

Enjoy an afternoon of live music overlooking the Peconic River, along with great food, cold drinks, and that Seaside sunset.

๐ŸŽถ Kelli Baker
๐Ÿ“… Sunday, August 30
โฐ 4PMโ€“7PM

Make the most of the final Sunday of August and spend it with us at Seaside Grill! โ˜€๏ธ๐Ÿน๐ŸŽถ

๐Ÿ“ 451 East Main Street, Riverhead
๐Ÿ“ž 631-574-0127

Saturday night calls for The Jam Club! ๐ŸŽธ๐ŸŽถSpend the evening by the water with live music, good food, cold drinks, and one...
08/28/2026

Saturday night calls for The Jam Club! ๐ŸŽธ๐ŸŽถ

Spend the evening by the water with live music, good food, cold drinks, and one of the best views in Riverhead.

๐ŸŽต The Jam Club
๐Ÿ“… Saturday, August 29
โฐ 6PMโ€“9PM

Come hungry, bring some friends, and settle in for a summer Saturday night at Seaside Grill. ๐ŸŒ…๐Ÿป

๐Ÿ“ 451 East Main Street, Riverhead
๐Ÿ“ž 631-574-0127

The rain doesnโ€™t want to stop yet.We will be closed again tonight. Friday August 21st. ๐Ÿ˜ญโ˜”๏ธ
08/21/2026

The rain doesnโ€™t want to stop yet.
We will be closed again tonight. Friday August 21st. ๐Ÿ˜ญโ˜”๏ธ

๐ŸŽถ Another great weekend of live music at Seaside Grill! ๐ŸŒ…๐ŸŽธThree days, three great performances, and plenty of good food,...
08/20/2026

๐ŸŽถ Another great weekend of live music at Seaside Grill! ๐ŸŒ…๐ŸŽธ

Three days, three great performances, and plenty of good food, cold drinks, and waterfront views. Grab some friends and spend the weekend with us at the Seaside! ๐Ÿน๐ŸŒŠ

๐ŸŽธ Friday, August 21 | 6โ€“9PM โ€” Lindsay Reeve Band
๐ŸŽถ Saturday, August 22 | 6โ€“9PM โ€”North Fork Dirt Band
๐ŸŽค Sunday, August 23 | 4โ€“7PM โ€” DeeandBob

Come for dinner, stay for the music, and enjoy summer on the Peconic River!

๐Ÿ“ 451 East Main Street, Riverhead
๐Ÿ“ž 631-574-0127

We will be closed tonight due to the weather ๐Ÿ˜ญ.Float down to the docks this weekend and join us for great live music, ta...
08/20/2026

We will be closed tonight due to the weather ๐Ÿ˜ญ.
Float down to the docks this weekend and join us for great live music, tasty food and thirst quenching cocktails!

๐ŸŽถ Another weekend of live music on the waterfront at Seaside Grill! ๐ŸŒŠโ˜€๏ธJoin us for three days of great music, great food...
08/13/2026

๐ŸŽถ Another weekend of live music on the waterfront at Seaside Grill! ๐ŸŒŠโ˜€๏ธ

Join us for three days of great music, great food, cold drinks, and summer evenings overlooking the Peconic River.

๐ŸŽธ Friday, Bingo Bango! August 14 | 6โ€“9 PM
Live music to kick off the weekend!

๐ŸŽถ Saturday, NoFo Band August 15 | 6โ€“9 PM
Saturday night by the water!

๐ŸŽค Sunday, The Lighter Side August 16 | 4โ€“7 PM
closes out the weekend!

Come early, grab a table, order your Seaside favorites and enjoy live music right on the waterfront. ๐Ÿน๐Ÿฆž๐ŸŒ…

๐Ÿ“ 451 East Main Street, Riverhead
๐ŸŒŠ Behind the Hyatt Place
๐Ÿ“ž 631-574-0127

Great Food. Cold Drinks. Good Times.

08/12/2026

Address

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

Opening Hours

Thursday 3pm - 9pm
Friday 3pm - 10pm
Saturday 12pm - 10pm
Sunday 12pm - 9pm

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