Summer is just around the corner, and if you've been thinking about getting out on the water for a real Long Island fishing adventure, there's no better time to start planning. Every season, thousands of people search for deep sea fishing on Long Island — and what they're really looking for is pretty simple: a great day on the water, a crew that knows what they're doing, and a cooler worth bragging about on the ride home. Out here on the North Shore, that trip has been happening out of Port Jefferson Harbor for 25 years. The water is beautiful. The fish are waiting. And it's a lot more approachable than most people expect.
Table of Contents
- What "Deep Sea Fishing" on Long Island Actually Means
- Where We Fish: Long Island Sound from Port Jefferson
- What Fish Are You Going After on Long Island Sound?
- The Best Times to Plan Your Deep Sea Fishing Long Island Trip
- Everything You Need Is Already on the Boat
- Who This Trip Is For
- Getting Here from NYC and Beyond
- Captain's Tips Before You Go
- Frequently Asked Questions
What "Deep Sea Fishing" on Long Island Actually Means
The phrase "deep sea fishing" means something a little different depending on where you are. Down in the Florida Keys, it might mean trolling for marlin 30 miles offshore in open blue water. Here on Long Island's North Shore, deep sea fishing on Long Island means heading out onto Long Island Sound — open saltwater, real fish, real tackle, and a crew that's been doing this for a long time.
We fish roughly one to five miles offshore, in water that ranges from about 30 feet deep in the spring to close to 100 feet in the late summer and fall. That's genuine saltwater fishing with everything that comes with it: the roll of the boat, the pull of a fish, the smell of salt air, the mate calling out when the bite turns on. What it isn't is a 60-mile run into the open Atlantic — and for most people, that's a genuinely good thing.
Long Island Sound typically offers calmer water than the ocean, where swells and chop can make a day more challenging than enjoyable — especially for first-timers, kids, or anyone who just wants to focus on the fishing. The Sound is beautiful, it's productive, and it delivers the kind of catches people talk about for weeks.
We've been running trips out of Port Jefferson Harbor since 2001, and in that time we've put more than 200,000 people on fish right here in the Sound. These are some of the finest fishing waters on the East Coast, and after 25 years on them, we know them well.
Where We Fish: Long Island Sound from Port Jefferson
There's a moment every morning when the boat clears the breakwater at Port Jefferson Harbor and the Sound opens up in front of you. The Port Jefferson Ferry is already making its crossing toward Bridgeport, Connecticut. The village is just waking up behind you. And ahead, it's all open water — wide, quiet, and full of fish.
Depending on the season and what's feeding, we work the waters ranging from Smithtown Bay to the west across toward Shoreham to the east. We're not running a fixed route — we go where the fish are. The crew reads the tides and the conditions and puts the boat right where we've been catching. That's the job, and our crew takes it seriously.
Celtic Quest operates out of three locations across the season, which gives us real flexibility. Port Jefferson is our home base, running trips from April through October and into November. In May, we run full-day trips out of Jamesport on Peconic Bay — a beautiful early-season fishery on the East End. And from mid-September through Thanksgiving, we move part of our operation to Mattituck, where the fall wreck and bottom fishing can be extraordinary.
Our two vessels — Celtic Quest IV, a 70-foot open boat that holds up to 120 passengers, and Celtic Grace, an 80-foot fishing yacht with a full cabin, heating, and restrooms for up to 129 passengers — are both built for stability and comfort on the Sound. Explore all our trip types here and see what fits your group.
What Fish Are You Going After on Long Island Sound?
One of the great things about fishing Long Island Sound is that the answer to "what are we catching today?" changes all season long. You're not chasing one fish. The Sound serves up a different menu depending on when you go, and every species has its moment.
Here's the general picture across a Celtic Quest season:
Porgies (scup) are the backbone of the season — reliable, fun to catch, and genuinely delicious on the table. They show up in good numbers in the spring and keep producing right through the fall. For beginners especially, porgies are wonderful. They bite hard and pull well for their size, and catching your first one on Long Island Sound is a memory that tends to stick.
Fluke arrive in May and give us excellent fishing through early summer. The strikes can come out of nowhere, and they're among the best-eating fish in the Sound.
Sea bass are a bottom-fishing staple we target at Port Jefferson and especially at Mattituck in the fall. They love structure, and our crew knows right where to find them.
Striped bass are the fish that gets everyone fired up. The spring run and the fall run both produce great action, and we run special trips when the conditions line up. These are tide-dependent trips we schedule based on current conditions — check our fishing reports for the latest on what's happening with bass.
Bluefish are the brawlers of the Sound — strong, fast, and absolutely thrilling on the line. They typically show up later in the summer and really turn it on through the fall run.
Blackfish (tautog) open up mid-October at Mattituck and run through Thanksgiving. For the right group, late-season blackfish fishing is about as good as it gets.
Weakfish make an appearance at our Jamesport location in May and show up occasionally at Port Jefferson as well.
Our crew stays completely current on all New York State fishing regulations — seasons, limits, and rules change year to year, and that's their department, not yours. Your fishing license is included in your fare, so there's nothing to sort out before you board.
The Best Times to Plan Your Deep Sea Fishing Long Island Trip
The honest answer is that there's good fishing to be had from April through November — but a few windows tend to shine a little brighter than others.
Late May through mid-June is the window we find ourselves recommending most often. Porgy fishing is typically excellent, fluke are in full swing, the weather is usually beautiful, and the whole Sound feels alive. June is our busiest month of the year, and for good reason — fishing is strong, the days are long, and everybody's ready to get outside.
September is the other peak we love. As the water cools, fish activity picks up again and feeding intensifies. The weather usually holds nicely, and the trips have a wonderful energy to them. Fall fishing on Long Island Sound has a magic all its own — if you haven't tried it, it's worth planning around.
July and August offer solid bottom fishing and warm, comfortable days on the water. Fishing can moderate a bit in the summer heat, but the trips are still a great time — and for groups and events, summer is a wonderful season to be out on the Sound.
October can produce some of the most exciting fishing of the entire year. The catch is that the weather is unpredictable and we do see cancellations. If you're flexible and the conditions cooperate, October is spectacular. If you need a firm date, September is the safer choice.
Everything You Need Is Already on the Boat
This is the part that surprises a lot of first-timers. You don't need to show up with anything except yourself, some snacks, and an eagerness to have a good time. Everything else is handled.
Every Celtic Quest trip includes:
- Fishing rods and all tackle — already rigged and ready to go
- All bait — our crew takes care of it
- Your fishing license — covered in your fare
- Expert crew on deck — teaching, helping, and making sure everyone is in on the action
- Fish filleting and cleaning at the end of the trip — you leave with bags of fresh fillets, not a mess to deal with at home
- Bags for your catch — so you can actually get the fish home
The crew is really the heart of what makes these trips work. They love this job, and they're especially great with first-timers and kids. Nobody stands on the rail feeling confused — everyone gets involved. What to expect on your first fishing charter is a great read before you book if you want to feel extra prepared.
Who This Trip Is For
The short answer: pretty much everyone.
I've watched corporate groups who spend their weeks in office towers completely unwind the moment we clear the harbor. I've seen kids catch their very first fish and hold it up with a look of pure joy. I've watched families with three generations all fishing off the same rail at the same time. And plenty of serious anglers come back year after year because they know the Sound produces.
No experience needed. No special fitness required. Kids from age five on up are welcome. The calmer waters of Long Island Sound are much more forgiving than the open ocean — and our crew is very good at looking out for everyone on board.
We run open boat trips for individuals and smaller groups, and private charters for groups who want the whole boat to themselves — bachelor parties, family reunions, corporate outings, school trips, you name it.
Getting Here from NYC and Beyond
Port Jefferson is about 60 miles east of New York City — roughly a two-hour drive depending on traffic. Take the Long Island Expressway east and head north toward Port Jefferson. We're right at the marina at 118 West Broadway in Port Jefferson, NY 11777.
No car? No problem. The LIRR Port Jefferson Branch runs directly to Port Jefferson Station, and from there a local bus or quick rideshare gets you right to the dock. Uber and Lyft are both available in Port Jefferson. For full directions and parking details, visit our directions page — parking in the village is metered and paid, so give yourself a little extra time before departure.
Captain's Tips Before You Go
After 25 years, a few things come up before every trip. Here's what I always tell people:
- Eat before you come. A light meal before boarding is much better than an empty stomach on the water.
- Dress in layers. Even on warm summer days, it's cooler out on the Sound than you'd expect. Bring a light jacket.
- Bring snacks and drinks. We're all-inclusive on the fishing side — food and drinks are bring-your-own. Beer and wine are welcome aboard. Hard liquor is not permitted.
- Arrive early. Give yourself 30–45 minutes before departure to get settled, meet the crew, and find your spot on the rail.
- Tip the crew. They work hard and they work for tips. The standard is around 20%, and a good mate earns every bit of it.
- Don't stress about the catching. The crew handles the expertise. Your job is to relax and enjoy the morning.
For a full pre-trip checklist, this packing guide covers everything you'll want to bring.
Frequently Asked Questions
Is deep sea fishing on Long Island good for beginners?
Absolutely. Our crew genuinely loves working with first-timers, and a big part of the job is making sure everyone on board has a great time from the first cast. No experience is needed at all — we provide all the gear, rig everything up, and walk you through it step by step. The calmer waters of Long Island Sound also make for a much more comfortable ride than the open ocean, which goes a long way toward making beginners feel at home and wanting to come back.
What fish can I catch on a Long Island Sound fishing charter?
The species vary by season, but across a full Celtic Quest year you might encounter porgies, fluke, sea bass, striped bass, bluefish, blackfish (tautog), and weakfish — depending on when and where we're fishing. Porgies are a reliable staple all season long. Fluke shine in late spring and early summer. Striped bass and bluefish really come alive during the fall run. Our crew and our fishing reports page will always give you the most current picture of what's biting.
Do I need to bring my own gear or fishing license?
Neither. Everything is included in your fare — rods, tackle, bait, and your fishing license. Just show up ready to fish. The crew handles all the equipment, and at the end of the trip they'll clean and fillet your catch so you're heading home with bags of fresh fish and nothing left to do but figure out what you're cooking for dinner.
How far offshore does Celtic Quest go?
We typically fish one to five miles offshore on Long Island Sound, in water ranging from about 30 feet deep in the early season to close to 100 feet in late summer and fall. The run to the fishing grounds from Port Jefferson Harbor is usually somewhere between 30 minutes and an hour, depending on where the fish are that day.
What's the difference between fishing Long Island Sound and fishing the ocean?
The Sound is generally calmer and more sheltered than the open Atlantic. Ocean fishing from Long Island's South Shore involves larger swells and more open-water exposure — which some anglers love and others find challenging. Long Island Sound delivers excellent saltwater fishing in more forgiving conditions, which makes it a wonderful choice for families, first-timers, and anyone who'd rather think about the fish than the motion of the boat.
Can I book a private charter for a group on Long Island?
Yes, and we love doing them. Celtic Quest runs private charters for all kinds of groups — corporate outings, bachelor parties, family reunions, birthdays, school trips, memorial services, and more. You get the boat, and we handle everything else. Learn more about private charters here or give us a call at (631) 928-3926 to talk through what your group needs.
What time of year is best for deep sea fishing on Long Island?
Late May through mid-June and September are our two strongest windows — solid fishing, comfortable weather, and everything clicking at once. That said, there's good fishing from April right through Thanksgiving at our Mattituck location. The fishing reports on our website are always the best source for current conditions, and our crew is happy to talk through timing when you call to book.
Ready to get out on the water? Book your trip here or call us at (631) 928-3926. We'd love to have you aboard.
