South Florida's Second Mahi Season Arrives in the Keys

What's biting

What's next

With no live buoy or nearshore weather feed available for this report, plan around the calendar signals in hand: today's new moon means the biggest tidal swings of the cycle for the next several days, and moving water is exactly what pushes bait — and predators — onto the reef edge and around bridge pilings. Expect the strongest bite windows to cluster around the peak of the outgoing and incoming tides rather than the slack in between.

The clearest near-term storyline is the mahi push Saltwater Sportsman flagged for mid-September: if that pattern holds, look for schools to keep building over the next several days to a week as the second wave works down the coast. Anglers running offshore should expect the bite to sharpen through the back half of September rather than peak immediately — early arrivals are often scattered before schools consolidate along weed lines and current edges.

Bottom fishing should stay a reliable fallback through the weekend. Sport Fishing Mag's note that Gulf-side gag grouper are in their short September trolling window suggests this is a use-it-or-lose-it stretch — that fishery typically tightens up as water temperatures ease into fall, so working structure in the 60-120 foot range sooner rather than later is the higher-percentage play. Reef trips for yellowtail and mutton snapper, a mainstay ALL IN Key West has reported on all season, should hold steady; a fresh chum slick over structure remains the standard approach when the offshore bite is inconsistent.

Sailfish are the one to watch rather than plan around just yet. ALL IN Key West's report of an unusually early start to the run back in March raises the question of whether this season's winter push also arrives ahead of schedule — worth checking captain reports again as October approaches, since that's typically when the Keys sailfish bite starts to build in earnest.

For weekend planning: the days immediately around the new moon (today through roughly midweek) carry the strongest current, which favors bait-and-drift techniques over slow-trolled presentations in skinnier water. If wind and sea state cooperate, this is a good stretch to commit to an offshore run for mahi before conditions or crowds shift later in the month. Always check the latest NOAA marine forecast and local tide tables before heading out, since no live weather or gauge feed fed into this report.

Context

September in the Florida Keys typically sits at a seasonal hinge: the peak summer patterns (tarpon on the bridges, the mutton snapper spawn around the May-June full moons) have wound down, while the fall/winter fisheries — sailfish, kingfish runs, and the second mahi push — are just getting started. What's showing in the current intel lines up with that calendar. Saltwater Sportsman describes the second South Florida mahi season as materializing 'around mid-September and lasting through' the fall, which is exactly on schedule for a report filed September 10. Sport Fishing Mag's framing of Gulf gag grouper trolling as a 'short September season' is similarly on-time — that fishery is a narrow window by design, not an early or late signal.

Earlier-season reports in the feed (ALL IN Key West's May/June accounts of strong snapper fishing and an unusually early sailfish start back in March) describe conditions well before today's date and shouldn't be read as current — they're useful mainly as a reminder that this season started early and strong by Keys standards, which raises the question of whether the fall sailfish run follows the same early pattern. There's no live buoy or gauge data in this report to compare against typical September water temperatures or tidal ranges, so a numbers-based comparison to past Septembers isn't available here — that's a genuine gap rather than an assumption filled in. On the regulatory side, CCA Florida's coverage of the South Atlantic red snapper pilot-program litigation is a live, unresolved storyline for anglers targeting snapper on the Atlantic side this fall.