Delaware Bay Keeper Flounder Bite Holds Strong Into September

What's biting

What's next

With a new moon this week, expect stronger tidal swings than the neap-tide stretch anglers just fished through — bigger water movement on the bay flats should concentrate bait and, with it, the flounder that Higbee's and Big Dave's are already finding to 22-23 inches. Early morning and the last two hours of the outgoing tide remain the window bay-side boats are reporting their best drifts.

Black drum in the teens to 20 pounds (Higbee's, Big Dave's) on clam baits should stay a factor through the rest of September as water temps ease down from summer highs — this is a typical late-summer-into-fall bay pattern, not a new development. Weakfish look to be building rather than fading: both Big Dave's and Hands Too are seeing fish in the 4-pound-to-19-inch range on bloodworms and soft plastics, and that bite often strengthens as bait pushes out of the back bays over the next few weeks.

Hands Too Bait and Tackle's note that stripers are starting to move into the back-bay sod banks is worth watching closely — it's an early tell for the fall migration that typically firms up through late September into October along this stretch. If bait continues moving the way Hands Too describes ("tons and tons" from the bay to Cape May and the Wildwoods), expect that early striper presence to build week over week.

On the regulatory clock: The Fisherman (Northeast) flags that New Jersey's fluke season is set to close 9/25, with the black sea bass bag limit stepping up to 10 fish on 9/23 — plan bay-side flounder trips for the next two weekends rather than waiting, since the keeper action bait shops are describing right now won't have much runway left. Boulevard Bait & Tackle's read — solid numbers, tougher keeper sorting — suggests the size structure may keep thinning as the close approaches, so working the reef sites and jetty edges they mention is the better bet for quality fish over raw counts.

Context

A strong keeper flounder bite persisting into mid-September, alongside black drum and building weakfish, is a fairly typical late-season pattern for the Delaware Bay (NJ side) — this stretch of bay is known for extending its flounder and drum action later into the year than the open beachfront does, one reason the state's fluke closure sits at 9/25 rather than earlier. NJ Fish & Wildlife News' Input Wanted post on the Summer Flounder & Black Sea Bass Tally Form underscores that the state is actively gathering more granular season data on this fishery, which points to typical, expected end-of-season effort rather than anything unusual playing out on the water this year.

The early striper movement into back-bay sod banks that Hands Too Bait and Tackle is reporting lines up with the normal calendar for this region — bay-side stripers typically begin staging in the marsh creeks in September ahead of the broader fall run that intensifies through October. Nothing in this week's intel suggests an early or late shift from that norm; the available reports read as an on-schedule September for Delaware Bay's NJ side. There isn't enough comparative data in this feed set to say whether bait volume or fish size are running above or below a typical year — only that current activity matches the expected seasonal shape.