When Blackfin Are Around Key West
Blackfin tuna fishing out of Key West is a cool-season fishery: blackfin appear on the port’s autumn, winter and spring species lists and drop off the summer list. This guide covers when to look, where boats run, what holds fish, how blackfin are fished and who fishes for them from this port.
For ramps, channels and port detail, see the Key West port page. For the general species picture, read the blackfin tuna species guide. The seasonal pattern is framed in the regional picture across the Atlantic Southeast (see also the wider Atlantic Southeast guide).
| Season | Blackfin on the Key West species list |
|---|---|
| Autumn | Yes |
| Winter | Yes |
| Spring | Yes |
| Summer | No |
Autumn to Spring
Blackfin are on the local lists for autumn, winter and spring, so a trip in those seasons falls inside the window. The lists say when to look, not what you will catch.
The Summer Gap
Blackfin are absent from the summer list. If blackfin are the goal, plan the trip outside summer.
Where Boats Run
Boats run offshore to the Gulf Stream edge, or west toward the Marquesas Keys and Dry Tortugas National Park.
The Gulf Stream Run
The Gulf Stream is about 20 minutes away for the Dream Catcher charter’s deep-sea boat. That is one boat’s figure rather than a general run time. Hull, load and sea state all change it, so take it as a sign that the Stream is a short run from this port, not as your ETA.
Plan from the numbers in the official NOAA marine forecast: wind, wave height and period.
West Toward the Marquesas and Tortugas
The Marquesas Keys and Dry Tortugas National Park lie to the west, both longer-range options than the Gulf Stream. They sit on the same westward line, with the Marquesas first and the Tortugas beyond them.
Grounds and Structure
Four grounds anchor blackfin fishing out of Key West: the Gulf Stream edge, the Marquesas Keys, Dry Tortugas National Park (Fort Jefferson and Garden Key) and the Garden Key Historic Use Area.
| Ground | Direction from port | What is specific |
|---|---|---|
| Gulf Stream edge | Offshore | About 20 minutes for the Dream Catcher charter’s deep-sea boat |
| Marquesas Keys | West | Named ground on the westward run |
| Dry Tortugas National Park | West, beyond the Marquesas | Fort Jefferson and Garden Key; national park waters |
| Garden Key Historic Use Area | Around Garden Key | One-mile boat fishing zone |
You can watch the Gulf Stream edge on OBS SST and Chlorophyll, and read the bottom with Chart Contours. Chart layers are not for navigation.
Gulf Stream Edge
This is the offshore ground and the shortest run from port, the closest named ground on the list.
Marquesas Keys
The Marquesas are a named ground to the west and the first stop on the westward line.
Dry Tortugas and Garden Key
Dry Tortugas National Park includes Fort Jefferson on Garden Key. The Garden Key Historic Use Area is a one-mile boat fishing zone around Garden Key. Mark the zone before the trip and find out which water around the fort it covers. The rules are in the Regulations section below.
How Blackfin Are Fished Out of Key West
The local methods are trolling the edge, chunking or live bait, and jigging. For depths and gear, see the tackle and rigging detail in the species guide.
Trolling
Trolling covers water along the Gulf Stream edge and is how boats find fish before stopping.
Chunking and Bait
Chunking or live bait holds fish behind the boat once they are found.
Jigging
Jigging is a vertical method. The species guide has the specifics.
Who Fishes for Them From This Port
Private boats and local charters both target blackfin from Key West. For other options, see other tuna species and ports.
Private Boats
Private boats choose between the Gulf Stream run and the westward grounds above. Match the ground to the range the day allows.
Eva Marie Fishing Charters
Eva Marie Fishing Charters lists blackfin tuna. The boat is the Eva Marie, 43 ft. A Key West tuna charter is one way to see the water on a first day before running your own boat.
FAQ About Blackfin Tuna Fishing Out of Key West
When are blackfin around Key West?
Blackfin are on the port’s species lists for autumn, winter and spring, and absent from the summer list. Plan a dedicated blackfin trip outside summer.
How long is the run to the Gulf Stream?
It is about 20 minutes for the Dream Catcher charter’s deep-sea boat. Hull, load and sea state change that, so check the NOAA marine forecast numbers before you go.
Can you fish near Garden Key?
The Garden Key Historic Use Area is a one-mile boat fishing zone around Garden Key in Dry Tortugas National Park. Park rules apply there, so check them before the trip.
Is there a Key West charter that targets blackfin?
Yes. Eva Marie Fishing Charters lists blackfin tuna aboard the Eva Marie, 43 ft.
Where are the rules for blackfin at Key West?
The FWC sets state rules, and the Florida regulations page above summarizes them. Check both before fishing. Park rules apply near Garden Key.
