Delaware Bay flounder bite runs hot as croakers flood the back bays

What's biting

What's next

Expect the current pattern to hold, and likely build, over the next several days. Flounder have been the headline fish in Delaware Bay all August, and per The Fisherman's Southern New Jersey report both Higbee's Bait and Tackle and Big Dave's Tackle describe consistent action from the EP Tower grounds out to the shipping channel — that kind of wide distribution typically carries through the first cool snap of early fall rather than shutting off overnight. Anglers targeting keepers should keep working live minnows and squid-tipped bucktails around structure and channel edges.

Striped bass are the fish to watch as water starts to cool. Per The Fisherman's DE/MD/Chesapeake report, Smith's Bait Shop is already seeing 20-to-24-inch stripers pushing into tidal creeks and rivers on sandworms and shrimp — as temperatures drop through September, that bite typically strengthens and fish push further up the estuary and along bay structure. Watch for that pattern to expand over the next two to three weeks.

Croaker fishing should stay strong in the near term but is worth working while it lasts — per The Fisherman's NJ/DE Surf report, One Stop Bait and Tackle describes a 'major croaker bite' in the surf on bloodworms and Fishbites, and the DE/MD/Chesapeake report has croakers thick at Woodland Beach pier and Bowers Beach jetty. Croaker activity in this region typically tapers as water cools through September, so the next couple weeks are prime.

On the structure side, tog and sheepshead fishing is building. Per The Fisherman's NJ/DE Surf report, Boulevard Bait and Tackle says tog fishing is 'really starting to pick up inshore,' including back-bay bridges and jetty rocks, with sheepshead pushing closer to inshore grounds on green crab baits — that trend should continue to build through September as water cools, the normal seasonal cue for tautog to stage on structure.

Offshore, per The Fisherman's NJ/DE Offshore report, blue and white marlin, bluefin, and mahi remain active at the canyons and inshore pots, and captains like Super Chic Charters report tuna-and-tile trips already booking into September — that offshore window typically holds through early fall before winds and cooling water push the bite out.

Plan around morning and evening tide changes for bay structure species, and factor the flounder season's regulatory window into trip planning as New Jersey's Delaware Bay season winds toward its close later in September.

Context

Delaware Bay's late-August pattern this year reads as on-schedule for the region — flounder holding strong into the back half of summer, croaker and spot thick in the back bays and piers, and stripers just beginning to show in the tidal creeks as a preview of the fall push. Per The Fisherman's DE/MD/Chesapeake report, Eric Burnley notes that fishing 'remains good with pretty much the same fish being caught from the freshwater ponds out to the canyons,' a fairly typical late-August read for this fishery — not an early or late season, just the usual transition point.

One detail worth flagging for trip planning: per that same report, the New Jersey side of Delaware Bay closes its flounder season on September 25, while the Delaware side's four-fish, 17.5-inch limit continues through the end of the year — anglers fishing the bay should know which side of the state line they're on as the calendar turns.

Delaware Surf Fishing's blog has previously covered a Delaware striped bass slot limit in the 20-to-24-inch range, though that note dates to a prior season, so anglers should confirm current DNREC regulations before harvesting rather than relying on that figure. No forum chatter or additional corroborating reports came through beyond the shop and blog sources cited here, and no buoy or gauge readings were available this cycle, so this update leans more heavily on shop intel than usual — treat water temperature and tide timing as approximate until fresh telemetry is back online.