Flounder limits, weakfish comeback headline Delaware Bay

What's biting

What's next

Delaware Bay's Mid-Bay reef sites should keep building through the next several days. Smith's Bait Shop reports Port Mahon boats are already finding flounder, trout, croaker, and spot over bay structure, and adds that 'this fishing will only improve in September' — a trend worth planning weekend trips around rather than treating as a one-off good day. Hook 'em and Cook 'em echoes that read, noting September is typically a strong stretch at the Old Grounds for flounder, sea bass, and croaker as those species improve in both size and numbers heading into fall.

The flounder bite at the EP Tower, per Higbee's Bait and Tackle, has been the standout of the week, with limits to 22 inches on private and charter boats and pool fish to 25 inches on the party boats. That kind of consistency usually holds for a stretch before shifting with water temperature, so anglers with a narrow window should prioritize it now rather than wait.

Weakfish are the wildcard to watch. Hands Too Bait and Tackle notes they were suspiciously absent all spring and summer and have only now shown up along the bay coastline, with fish to 24 inches on bloodworms and on jigs cast into the evening hours. If that push continues, expect the evening weakfish bite to build over the next week as more fish filter into bay-front structure and jetty tips.

Offshore, boats running from South Jersey Marina and Fin-Atics report mahi stacked around lobster pots and flotsam lines, with tilefish action holding steady in the canyons on salmon-belly strips — a reasonable option on days the inshore bay bite slows with tide or wind. Those reports point to a fishery still in transition, with late-summer species like croaker and spot holding strong on bloodworms and Fishbites while cooler nights start nudging fall species like weakfish into position.

For weekend planning, target moving tides around the reef sites and the EP Tower early, and save the evening hours for weakfish along jetty tips and bay-front structure. Anglers targeting striped bass should stick to smaller fish on bloodworms near pier structure for now — nothing in current reports suggests a major push of larger fish yet, though that typically changes as Delaware Bay moves deeper into the fall run.

Context

Delaware Bay's late-summer pattern looks on-schedule this year. Delaware Surf Fishing notes DNREC's recreational striped bass season carries a 20-24 inch summer slot limit under the current ASMFC-compliant regulation — worth checking current state regs before harvesting any striper, since slot limits and seasons can be revised. That regulatory backdrop aside, the biological pattern in this week's reports — flounder building toward a September peak, croaker and spot holding through the back half of summer, and weakfish arriving late — tracks with what Smith's Bait Shop and Hook 'em and Cook 'em describe as a typical, if slightly delayed, transition into fall.

The weakfish story is the one departure worth flagging: Hands Too Bait and Tackle specifically called their arrival late, having been missing through spring and summer before finally showing this week. Whether that's a true delay or normal season-to-season variability isn't something these reports can confirm on their own — it would take a few more weeks of consistent catches to say confidently.

Beyond that, there isn't a strong comparative signal in this week's intel for how this September stacks up against prior years in the bay — the shop reports describe current conditions well but don't offer season-over-season framing. Treat the flounder and croaker action as consistent with a normal late-summer-into-fall Delaware Bay pattern, with the weakfish return as the notable wrinkle to watch.