October 2025 — Jacksonville: Peak Flounder Season — Mayport Jetties at Their Best. October is a fall month with water in the 72–80°F range — peak fall pattern; mullet run; flounder migrate; inshore bite excellent. Here’s the full breakdown of what’s biting, where to fish, and the most productive tactics for this month.
What’s Biting — October 2025
Primary targets this month: Flounder, Redfish, Seatrout.
Flounder
Peak flounder migration. Fish are staging at Mayport jetties, the rock piles inside the St. Johns River mouth, the train trestle, and Sisters Creek before pushing out to spawn. Bucktail jigs (1/2 oz, white, chartreuse) tipped with Berkley Gulp! 4″ swimming mullet or live mud minnows are deadly. Drag baits SLOW along the bottom with frequent pauses. Inlet and pass mouths during outgoing tides are prime ambush points.
Redfish
Peak fall redfish action — schools push the flats and oyster bars. Target the marshes of Pumpkin Hill Creek, Sisters Creek, Browns Creek, Cedar Point flats, and the docks of Black Hammock Island. Bull reds (28+ inches) often show in the passes and inlets during the fall mullet run. Cut mullet, live finger mullet, and topwater plugs at dawn all produce. Slot reds (18–27″) chew weedless gold spoons (Johnson) and soft plastics on jigheads in pothole-rich grass.
Seatrout
Seatrout are gathering in Sister’s Creek, the ICW north of the Mayport ferry, the deeper holes off Heckscher Drive, and Black Hammock Island. Larger fish (gator trout 20″+) hold in deeper potholes in 4–6 feet. Soft plastic paddletails (DOA CAL, MirrOlure Lil John) on 1/4 oz jigheads, MirrOdine suspending baits, and live shrimp under popping corks are the standard producers. Slow your retrieve as water cools.
Water Conditions & Patterns
Water temperatures are running 72–80°F. Peak fall pattern; mullet run; flounder migrate; inshore bite excellent. Falling tides through the Mayport jetties create the best bite windows; sheepshead and redfish position behind structure where current breaks. Two hours before to two hours after low tide is prime.
Check the NOAA marine forecast and tide charts before launching. Wind direction matters more than wind speed for inshore fishing — east winds tend to push clean water in, while strong westerlies can muddy the bays.
Tactics & Tackle for This Month
- Mullet run. Massive bait migrations south along the coast trigger feeding frenzies — every predator follows. Target inlets, passes, and beach troughs.
- Topwater dawn. The fall coolness extends the topwater window — walk-the-dog baits (Heddon Spook, MirrOlure Top Dog) produce explosive strikes.
- Front timing. The 24 hours before a cold front pushes through are typically lights-out; the day after is often slow as fish reset.
October Outlook
Peak fall fishing across the board — flounder migration intensifies, redfish school up, the mullet run is in full swing. One of the best months of the year.
Regulations Reminder
Redfish: 18–27″ slot, one per angler per day (verify current FWC zone-specific rules). Seatrout: 15–19″ slot, three per day in most zones (verify current FWC zone rules). Flounder: 14″ minimum, five per day (Florida). Always verify the current FWC regulations at myfwc.com before your trip — sizes, bag limits, and season dates change.
Local Resources
Bait & Tackle: B&M Bait & Tackle (Mayport, 904-246-6969); Strike-Zone Fishing (Jacksonville, 904-641-2433); Fishin’ Hole (Atlantic Beach, 904-757-7550).
Public Boat Ramps: Mayport (free, fast access to jetties), Sisters Creek (deep-water access to north river), Goodbys Creek (south side ICW), Wayne B. Stevens (Heckscher Drive).
Charter Fishing: $400–$650 inshore (Mayport, St. Johns); $750–$1,400 offshore (Elton Bottom, Hangover). Book ahead during cobia migration (March–April), red snapper opener (June), and the fall run (October–November).
More Jacksonville Resources
Jacksonville Fishing Guide · Jacksonville Seasonal Calendar · All Jacksonville reports →
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