What Great South Bay Offers and When to Fish It

Great South Bay is a shallow, productive estuary that runs along the south shore of Long Island from Freeport to Moriches Inlet. The bay averages 4 to 6 feet deep, warms quickly in spring, and holds striped bass, fluke, weakfish, and blue crabs year-round. Spring and fall are the strongest seasons — April through June and September through November — when stripers move through the bay on their way to and from spawning grounds, and fluke congregate on deeper channels before winter.

Summer fishing is possible but inconsistent; the bay can become murky and oxygen-depleted in July and August, pushing fish into deeper holes and the inlet. Winter is slow except for occasional stripers in the deeper channels near the inlet. The bay's real advantage is access: dozens of public launch ramps, bridges, and shoreline spots mean you can fish it from a boat, kayak, or on foot without traveling far from home.

Key Takeaways

  • Spring stripers (April–June) move through the bay on their way to spawning grounds; fish the deeper channels, inlet edges, and structure like pilings and jetties.
  • Fluke season runs June through September, with peak fishing in July and August on the bay's deeper holes and channel edges.
  • Public boat launches are scattered along the bay's perimeter; Freeport, Bellmore, Merrick, and Patchogue all have ramps with parking and facilities.
  • Fall (September–November) brings a second strong striper run and cooler water that improves bay conditions; fish the same structure as spring but expect larger fish.
  • Weakfish and blue crabs are present year-round but most abundant in warmer months; they respond well to live bait and small artificials near grass beds and channel edges.

Spring Striper Fishing — April Through June

Striped bass move through Great South Bay in spring on their way to spawning grounds in the Hudson River and other northern rivers. The run typically peaks in May, though fish begin showing in late April and linger into early June. Water temperature is the trigger: when the bay reaches 50 to 55 degrees, stripers start moving, and fishing improves steadily as the water warms to 60 degrees.

Fish the deeper channels first — the main channel that runs from Freeport Inlet eastward toward Moriches is the highway. Look for stripers holding on the edges where the channel drops from 4 feet to 8 or 10 feet. Jetties, pilings, and bridge abutments hold fish too, especially where current flows around structure. Live bunker, herring, or eels work best; if you're casting artificials, use 3- to 4-inch soft plastics or small topwater plugs early and late in the day.

Tides matter in spring. Fish the last two hours of the incoming tide and the first two hours of the outgoing tide; stripers position themselves to intercept baitfish moving with the current. Dawn and dusk are most productive, but overcast days often fish well all day.

Summer Fluke and Weakfish — June Through September

Fluke (summer flounder) arrive in June and stay through September, with peak numbers in July and August. They settle on the bay's deeper holes and channel edges, where they hunt small baitfish and crustaceans. The same main channel that holds spring stripers holds summer fluke; focus on the deeper sections and any spot where the bottom changes from sand to mud or shell.

Fluke respond to live bait — small shiners, spearing, or squid — drifted or jigged slowly along the bottom. A 1/4- to 3/8-ounce jig head with a 3-inch soft plastic tail works well in 6 to 10 feet of water. Fish the slack water around high and low tide; fluke are less active during strong current. Weakfish often share the same holes; they're more aggressive and will chase small artificials, so if you're not getting fluke bites, try a faster retrieve or a small spoon.

Summer water quality can be poor — the bay can become stagnant and oxygen-depleted in late July and August. When this happens, fish move to the inlet and the deeper channels near the inlet mouth, where water exchange keeps conditions better. If you're not finding fish in the shallower parts of the bay, head toward Freeport Inlet or Moriches Inlet.

Fall Striper Run — September Through November

The fall striper run is often better than spring. Fish begin moving south in September as water cools, and the run peaks in October and early November. Water temperature is again the trigger: when the bay drops below 65 degrees, stripers become active. Fall fish are also typically larger than spring fish, with plenty of 20- to 30-pound stripers mixed in with schoolies.

Fish the same structure as spring — channels, jetties, pilings, and inlet edges — but expect to find fish more consistently throughout the day. The cooler water improves bay conditions, so you're not limited to the inlet area. Live bunker and eels are excellent; so are large soft plastics (4 to 5 inches) and topwater plugs. The bite often peaks in the last hour of daylight and continues into darkness, so bring a headlamp if you're fishing from shore.

Tide is less critical in fall than in spring, but fish still concentrate on structure during the moving tide. If you're fishing a jetty or piling, you'll catch fish on both incoming and outgoing water; the key is that the current is moving.

Public Access Points and Launch Ramps

Freeport has the most developed access. The Freeport Boat Launch (on Woodcleft Canal, just south of Sunrise Highway) has a concrete ramp, parking, and a bait shop. It's the main gateway to the western bay and the inlet. Expect a fee and crowds on weekends.

Bellmore has a public ramp at the Bellmore Park boat launch (on the bay side of Merrick Road). It's smaller than Freeport but less crowded and still gives you good access to the central bay.

Merrick offers the Merrick Park boat launch (on Merrick Road, south of Sunrise Highway). Similar size and access to Bellmore; good for reaching the central and eastern bay.

Patchogue has the Patchogue Village Marina and the Patchogue Boat Launch (on River Avenue). This is your best access to the eastern bay and Moriches Inlet. The area holds good numbers of stripers and fluke, especially in fall.

If you don't have a boat, you can fish from shore at several spots: the Freeport Pier (public access, good for stripers and fluke), the Bellmore Causeway, and various jetties along the bay's perimeter. Check local regulations before fishing from private property or bridges.

Bait, Tackle, and Seasonal Gear

Live bunker and herring are the most reliable baits for stripers; you can buy them at tackle shops in Freeport, Bellmore, and Patchogue. Eels are excellent for fall stripers but harder to find; call ahead. For fluke and weakfish, live shiners and spearing work best, and they're easier to find than bunker.

Tackle-wise, bring a 7- to 8-foot medium-action rod for casting and jigging. A 6,000 to 7,000-size spinning reel holds enough line and has enough drag for stripers to 30 pounds. Use 15- to 20-pound braided main line with a 20- to 30-pound fluorocarbon leader; the leader helps with abrasion around structure and gives you a bit of stretch when a big fish runs.

For spring and fall stripers, bring topwater plugs (Pencil Poppers, Darters), soft plastics (4 to 5 inches), and a selection of jig heads (1/4 to 1/2 ounce). For summer fluke, focus on 1/4- to 3/8-ounce jigs with 3-inch tails. A small spoon (1/2 to 3/4 ounce) works for weakfish and can trigger stripers when they're not responding to other lures.

Tides, Weather, and Seasonal Timing

Great South Bay is tidal, and tide tables matter. The bay's tides are roughly 2 to 3 hours behind New York Harbor, so check a local tide table or app before you go. Incoming tide pushes baitfish into the shallower parts of the bay; outgoing tide concentrates them in the channels and near the inlet. Fish the transitions — the last hour of incoming and the first hour of outgoing — when baitfish are moving and stripers are feeding.

Wind direction affects water clarity and fish behavior. A strong south or southwest wind can muddy the bay and push water out, concentrating fish near the inlet. A north or northeast wind clears the water and pushes it in, spreading fish throughout the bay. Overcast days often fish better than bright, calm days, especially in spring and fall.

Plan your season around water temperature. April and May: 50 to 60 degrees, spring stripers. June through August: 70 to 80 degrees, fluke and weakfish. September and October: 60 to 70 degrees, fall stripers. November: 50 to 55 degrees, late fall stripers moving out. December through March: 35 to 45 degrees, slow fishing except in the deeper channels near the inlet.

Frequently Asked Questions

Can I fish Great South Bay from shore?

Yes. The Freeport Pier is public and productive for stripers and fluke. Jetties and bulkheads along the bay's perimeter also hold fish, but check local regulations and ask permission before fishing from private property. Kayaking is another option if you have access to a launch ramp.

What's the best time to fish if I only have a few hours?

Fish the last two hours before sunset through the first hour after dark. This window is productive year-round and especially strong in spring and fall. If you can only fish midday, target the deeper channels and inlet edges where fish hold regardless of light.

Do I need a boat to fish Great South Bay well?

A boat gives you access to the deeper channels and structure where the best fish hold, but shore fishing at the Freeport Pier and jetties can be productive, especially for stripers. If you don't have a boat, start at the pier or rent a kayak from one of the local outfitters near the launch ramps.

What size stripers should I expect?

Spring and summer fish run 12 to 20 pounds on average, with some larger fish mixed in. Fall fish are typically larger — 18 to 30 pounds is common. Schoolies (under 12 pounds) are present year-round but most abundant in summer.

Is Great South Bay good for beginners?

Yes. The bay is shallow, protected, and forgiving for new boaters. Fish are abundant and respond to simple live bait presentations. Start at Freeport or Bellmore, fish the main channel, and use live bunker or shiners. You'll catch fish and learn the bay quickly.