What You'll Find at Carmans River

Carmans River is a tidal estuary on the south shore of Long Island in Suffolk County, roughly 60 miles east of New York City. The river flows through Brookhaven and drains into Great South Bay, creating a mix of shallow flats, deeper channels, and salt marsh habitat that holds striped bass, weakfish, and bluefish depending on the season. The lower river—from the bay mouth upstream to the Sunrise Highway bridge—is where most fishing happens, and it's accessible by boat or from scattered public shoreline.

The river's character changes with the tide. At low water, broad mudflats and grass beds expose themselves; at high tide, the same areas become fishable channels where striped bass hunt. Weakfish move in during summer and early fall, feeding on small baitfish in the shallows. The river rarely exceeds 12 feet deep, and much of it runs 3 to 6 feet, so it rewards anglers who understand how tides move fish through tight quarters rather than those expecting open-water casting.

Key Takeaways

  • Carmans River holds striped bass year-round, with the best fishing from April through June and again in September and October.
  • Weakfish arrive in June and stay through September, feeding most actively around slack tide and the first hour of the outgoing tide.
  • Access is by private boat launch or from the public shoreline at Sunrise Highway bridge and scattered county parks; no public boat launch exists on the river itself.
  • New York State fishing regulations require a saltwater license for anyone 16 and older, and striped bass have a 19-inch minimum size with a two-fish daily limit.
  • Tides control fishing success here more than anywhere else on Long Island—plan your trip around the tide chart, not the clock.

Striped Bass Seasons and Tidal Patterns

Striped bass move through Carmans River on two distinct schedules. Spring migration brings fish into the estuary from April through early June as they move east along the coast toward spawning grounds. These fish are often larger—many in the 30- to 50-pound range—and they feed aggressively in the deeper channels and around the mouth of the river. Fish the incoming tide during this window, focusing on the channel edges where baitfish concentrate.

Fall fishing, from mid-September through November, is often more consistent for numbers. Striped bass return west along the coast, and many stage in Carmans River to feed before the water cools further. The shallower flats and grass beds become productive during this period, especially on the outgoing tide when baitfish are pushed from the flats into the channels. Water temperature drops from the 70s in September to the 50s by late November, and fish feed more predictably as the season progresses.

Winter fishing is possible but slow. Some striped bass remain in the deeper holes, but they feed sporadically and are less aggressive. Spring and fall are the seasons that draw most anglers here.

Weakfish and Summer Fishing

Weakfish (also called seatrout) arrive in Carmans River around mid-June when water temperatures reach the mid-60s. They stay through September, with peak numbers usually in July and August. Weakfish are smaller than striped bass—most run 12 to 18 inches—but they feed in shallower water and are more willing to chase artificials. They hunt small baitfish in the flats and marsh edges, and they're most active during slack tide and the first hour of the outgoing tide.

Weakfish are sensitive to water quality and temperature. If the river gets too warm or stagnant in August, they may move out temporarily. They also spook easily in shallow water, so use lighter tackle and quieter presentations than you would for striped bass. Live shiners or small soft plastics work well. The daily limit is 25 fish with a 12-inch minimum, so weakfish fishing can be productive if you're looking for numbers and a meal.

Access Points and Boat Launching

Carmans River has no public boat launch directly on the river. Most anglers launch from nearby facilities and run a short distance to the river mouth. Sunrise Marina and other private launches in the area charge a fee—typically $30 to $50 per day—and can get crowded on weekends. Call ahead to confirm they're open and have space.

Shoreline access exists at the Sunrise Highway bridge (Route 27), where you can fish from the shoulder during low tide or from a small pull-off area. Wertheim National Wildlife Refuge borders the river's upper reaches and allows foot traffic on designated trails, though fishing from the refuge itself is restricted. County parks in the area, including Hubbard Park in Westhampton, offer parking and water access, though these are primarily day-use facilities.

If you have a small boat or kayak, you can launch from Great South Bay and enter the river through the mouth. This avoids the launch fee but requires you to navigate the bay and understand tidal currents. The river mouth can be choppy in wind, so check conditions before heading out.

Tackle, Bait, and Lure Choices

Striped bass in Carmans River respond to both live bait and artificials. Live shiners, mullet, and bunker work well, especially during spring and fall migrations. Fish them on a simple rig—a 2/0 to 4/0 circle hook on a 20- to 30-pound fluorocarbon leader—and let the tide carry them into the channels. If you're using bait, a light sinker (1/2 to 1 ounce) keeps it in the strike zone without dragging bottom in the soft mud.

Artificials are effective and allow you to cover more water. Small to medium plugs (3 to 4 inches), soft plastics rigged on 1/4- to 1/2-ounce jigs, and topwater lures all produce striped bass, especially during low-light periods and around structure like pilings and marsh edges. Use 15- to 20-pound braided line on a 7-foot medium-action rod; the shallow water and tight quarters don't require heavy gear.

For weakfish, downsizing helps. Use 1/8- to 1/4-ounce jigs with 3-inch soft plastics, or cast small topwater plugs and poppers. Weakfish have softer mouths than striped bass, so set the hook gently and keep steady pressure rather than jerking hard.

Regulations and Licensing

New York State requires a saltwater fishing license for anyone 16 and older. You can purchase a license online through the New York Department of Environmental Conservation (DEC) website, or at most tackle shops and sporting goods stores. A one-day license costs less than a seven-day license, which costs less than an annual license; choose based on how often you plan to fish.

Striped bass regulations are strict. The minimum size is 19 inches, and the daily limit is two fish per angler. Weakfish have a 12-inch minimum and a 25-fish daily limit. Bluefish, if you encounter them, have an 8-inch minimum and a 10-fish daily limit. These regulations change periodically, so check the DEC website before you go. Possession limits apply whether you're keeping fish or just holding them in a cooler.

The river itself has no special closures or restricted zones for recreational fishing, though the Wertheim National Wildlife Refuge has its own rules—check the refuge website or call ahead if you plan to fish from that area.

Tides, Weather, and Planning Your Trip

Tides are the single most important factor for fishing Carmans River. The river is shallow and narrow, so tidal flow concentrates baitfish and predators into predictable channels. Plan your trip around the tide chart, not the time of day. Incoming tide pushes baitfish into the flats and channels; outgoing tide concentrates them in the deeper holes and mouth. Most anglers fish the last two hours of the incoming tide and the first three hours of the outgoing tide, when movement is strongest.

Slack tide—the brief period between incoming and outgoing—can be slow or productive depending on the season and water temperature. In spring and fall, slack tide often produces as fish reposition. In summer, it can be a lull.

Wind and weather matter less here than on open water, but a strong northeast wind can make the bay mouth rough and push water out of the river faster than normal. Check the forecast and tide chart together before you leave. Sunrise and sunset often coincide with good feeding windows, but don't skip midday fishing if the tide is right.

Frequently Asked Questions

What's the best time of year to fish Carmans River?

April through June and September through October are peak seasons for striped bass. Summer (June through September) is best for weakfish. Winter fishing is possible but slow. Spring and fall offer the most consistent action and the largest fish.

Can I fish from shore, or do I need a boat?

You can fish from shore at the Sunrise Highway bridge and from some county parks, but a boat gives you access to more productive areas and lets you follow the tide through the channels. Most serious anglers use boats, but shore fishing is possible if you time it around the tide.

What size striped bass are common in Carmans River?

Spring migrants often run 30 to 50 pounds, though fish in the 15- to 25-pound range are more typical year-round. Fall fish average smaller, usually 10 to 20 pounds. Weakfish run 12 to 18 inches and are rarely larger.

Do I need a special permit to fish Carmans River?

No special permit is required beyond a New York State saltwater fishing license. The river is open to public fishing, though some areas like the Wertheim National Wildlife Refuge have their own access rules.

What happens if the tide is wrong when I want to fish?

Fish will still be there, but they'll be less concentrated and less aggressive. If you can only fish at a certain time, go anyway—a poor tide is better than not fishing. But if you have flexibility, plan around the tide chart for the best results.