September brings fall transition to Palm Beach, Florida.
Inshore – September 2025
Top targets: snook and tarpon active, pompano arriving, cobia scouts. Fish moving tides and structure early morning and evening.
Offshore – September 2025
Offshore: wahoo building, sailfish arriving, mahi. Find fish at temperature breaks and weedlines. Check NWS marine forecast.
- Fish moving tides for best inshore bites
- Dawn and dusk outperform midday
- Post-front windows often produce exceptional fishing
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September: Mullet Run Builds, Snook & Tarpon Peak
September in Palm Beach is the absolute peak of inshore action. The mullet run is building through the month, snook are stacked at every inlet, and tarpon are working the beaches and inlets to feed on the migrating bait. Boynton Inlet, South Lake Worth Inlet, and Jupiter Inlet all fish well, and the predawn and twilight bites are spectacular when the bait is thick. The downside: September is hot, often stormy, and frequently shut down by tropical systems. Plan your trips around the weather windows.
Tackle & Technique
For snook in the mullet run, you want heavy gear — 30 lb braid, 50–60 lb fluoro leader, and a big topwater plug, swimbait, or live mullet. The fish are eating big baits, so don’t underdress. For tarpon, step up to 40–50 lb braid and 80 lb fluoro with a 7/0 circle hook on a live mullet free-lined in the inlet current. Beach anglers should walk the shoreline at dawn and dusk and cast big poppers or pencil poppers into the bait — when a tarpon crashes a 7-inch popper in skinny water, it’s the most memorable moment of the year.
Offshore in September
Offshore action is decent but inconsistent in September. Bottom fishing for muttons, mangroves, and yellowtail snapper is solid in 80–150 feet of water. Dolphin (mahi) are thinning but still present along the weed lines and color changes. Wahoo bite picks up later in the month as water temps start to ease. Most offshore captains use September to chase whichever pelagic bites best on any given day.
Conditions to Watch
Water temps stay in the mid-to-upper 80s. The tropics are at peak active — track the NHC outlook religiously and stay alert for systems within five days of any planned trip. The full and new moon spring tides intensify the mullet run and the snook bite — try to align trips with those lunar windows. Storms that brush the coast often improve post-storm conditions by chopping up the water and triggering aggressive feeding.
Captain’s Tip
The window from 30 minutes before dawn to 30 minutes after is the highest-percentage hour of the day in September. The bait is thick, the water is cool from overnight, and the predators are crashing the surface. Make this hour your priority — getting there an hour earlier than you’d like is worth more than three hours of mid-morning effort.