When mahi are off Fernandina Beach
Mahi-mahi fishing out of Fernandina Beach runs from late April through October. The fish sit 50 to 70-plus miles out at the Gulf Stream temperature break. Boats leave from Fernandina Beach, and every distance on this page is measured from the Fernandina Beach inlet. For biology and behavior, see the mahi-mahi species guide.
The table gives the local timing at a glance:
| Window | Months |
|---|---|
| Season | Late April through October |
| Heart of the bite | Late May through September |
Season
The season opens in late April and closes in October (Pipe Dream). For the coastwide picture of how fish move north, see the guide to mahi along the Atlantic Southeast (see also the wider Atlantic Southeast guide).
Heart of the bite
The best fishing runs late May through September (Pipe Dream), so that is the window to plan around.
Where boats run
Boats run out the Fernandina Beach inlet to the Gulf Stream temperature break, then work the sargassum weed lines and floating debris inside it. The Ledge and a set of artificial reefs lie along the way.
Three depth figures come up for this run, and each describes something different:
- 100 to 1000 ft: the span of the break zone (Pipe Dream).
- 100-plus ft: the water Big Fin fishes.
- About 120 to 200 ft: the depth target for mahi.
The Gulf Stream temperature break
The run is 50 to 70-plus miles each way out of the Fernandina Beach inlet (Pipe Dream). Before leaving the dock, check the official National Weather Service marine forecast for wind, wave height and period.
OBS SST shows where the temperature break sets up, and Chart Contours shows the 100 to 1000 ft span beneath it. Chart layers are not for navigation.
Weed lines and floating debris
Sargassum weed lines and floating debris inside the break zone hold the fish (Pipe Dream). Mahi gather under floating sargassum, and boats work each line and floater they find.
The Ledge
The Ledge is a named ground on the run out, and boats fish it on the way to the break.
Reefs on the way out
The artificial reef sites at 60 to 83 ft are structure you pass on the run out, and they are not the main mahi water. FWC’s dolphinfish species profile covers how dolphinfish cruise weed lines offshore.
| Site | Depth | Position |
|---|---|---|
| Captain Daddy (CD-06-#01) artificial reef | 67 ft | 30 25.920 N, 81 15.953 W (FWC guide) |
| Fernandina Snapper Banks culverts (FC sites, 1988 to 1991) | 70-83 ft | About 30 36 to 30 38.7 N, 81 11 W |
| Fernandina Banks Barbett (wooden boat) and 1989 culverts | 70 ft | About 30 36.6 N, 81 10.6 W |
| FB-6 culverts site | 60 ft | About 30 39.9 N, 81 11.0 W |
The Captain Daddy (CD-06-#02) reef sits at 67 ft. The BA reef sites (BA Reef, BA Site) lie at 60-65 ft. Chart layers are not for navigation.
How mahi are fished locally
The local sequence is to troll to find fish, then work them with light tackle (Pipe Dream).
Trolling to find fish
Boats troll ballyhoo and skirted lures to locate fish. Rigging and spreads are covered across the offshore gamefish guides.
Light spinning and pitched baits
Once fish are found, anglers switch to light spinning tackle with bucktails, or pitch ballyhoo at weed lines and floaters. The lighter gear makes it possible to work each line and floater without overrunning it.
Who fishes for mahi out of this port
These Fernandina Beach charters list mahi-mahi:
- Pipe Dream Charters: Captain Scott Thompson
- HooDoo Sportfishing Charters: Captains Tim Altman and Chris Altman, father and son
- Big Fin Charters
- Crawfish Charters: Captain Kenny Crawford
- Reel Dream Fishing Charters: based in St. Augustine, runs a Fernandina trip
The method on this page is the one Pipe Dream describes.
FAQ: mahi-mahi fishing out of Fernandina Beach
What are the best months for mahi out of Fernandina Beach?
Late April through October, with the heart of the bite from late May through September (Pipe Dream).
How far do boats run to find mahi?
Boats run 50 to 70-plus miles each way out of the Fernandina Beach inlet, to the Gulf Stream temperature break (Pipe Dream).
What depth of water holds mahi here?
The depth target is about 120 to 200 ft. The break zone spans 100 to 1000 ft, and Big Fin fishes 100-plus feet of water.
What should I look for at the break?
Sargassum weed lines and floating debris (Pipe Dream). Troll ballyhoo and skirted lures to find fish, then pitch bucktails or ballyhoo on light spinning tackle.
What structure is closer to the inlet?
FWC artificial reef sites at 60 to 83 ft, including the Captain Daddy reef and the Fernandina Snapper Banks culverts. These are structure you pass on the run out, and they are not the main mahi water.
