Louisiana · Southeast Louisiana
BLACKFIN TUNA FISHING
IN GRAND ISLE
Grand Isle is a solid destination for blackfin tuna fishing, with peak season in April and good catches in February, March, May. Book a charter and target blackfin tuna with local experts.
About Blackfin Tuna Fishing in Grand Isle
Smaller cousin of the yellowfin but excellent eating and great light-tackle sport.
Grand Isle is a solid destination for blackfin tuna fishing, offering peak season in April and good catches in February, March, May. The best months to target blackfin tuna here are April.
Scientific name: Thunnus atlanticus
Blackfin Tuna Seasonal Calendar — Grand Isle
Month-by-month availability for blackfin tuna in Grand Isle, LA.
How to Catch Blackfin Tuna in Grand Isle
Techniques & Bait
Consult your local charter captain for the most effective baits and techniques in the area.
Recommended Tackle
Your captain will provide all tackle and gear suited to the target species and local conditions.
Best Deep Sea Fishing Fishing Spots in Grand Isle
Top spots where local captains target blackfin tuna and other deep sea fishing species.
Grand Isle Offshore Platforms
The offshore oil and gas platforms south of Grand Isle in 100-300 feet of water create some of the most productive artificial reef habitat in the Gulf. Yellowfin tuna, wahoo, cobia, amberjack, and red snapper hold around the platform structures in impressive numbers. Jigging and live-baiting around the rigs produces consistent offshore catches on full-day trips.
Midnight Lump (from Grand Isle)
The Midnight Lump seamount is accessible on long-range trips from Grand Isle, approximately 70 miles offshore where the ocean floor rises dramatically. Yellowfin tuna, blue marlin, wahoo, and mahi-mahi concentrate over the lump in extraordinary numbers. It is one of the premier bluewater destinations in the entire Gulf of Mexico for trophy-class pelagic fishing.
Grand Isle Lumps
A series of natural bottom features and lumps south of Grand Isle in 150-400 feet of water create concentrated feeding zones for pelagic species. Yellowfin tuna, blackfin tuna, wahoo, and mahi-mahi patrol these underwater rises, especially when current lines and weed lines converge. The lumps are a cornerstone of Grand Isle's offshore charter fleet itinerary.
South Timbalier Block
The South Timbalier lease blocks southwest of Grand Isle feature a dense concentration of platforms and underwater infrastructure in 100-200 feet of water. Red snapper, amberjack, grouper, and cobia hold on the structure, while yellowfin tuna and wahoo cruise between platforms. The area provides both excellent bottom fishing and productive trolling routes for bluewater species.
Other Species in Grand Isle
More fish you can target while visiting Grand Isle.
Blackfin Tuna Fishing in Grand Isle — FAQ
The peak months for Blackfin Tuna fishing in Grand Isle are April. During these months, Blackfin Tuna are most active and abundant in the Grand Isle area.
Blackfin Tuna fishing charters in Grand Isle are typically deep sea fishing trips. Prices vary by trip duration and group size. Most charters include all gear, bait, licenses, and fish cleaning.
Consult your local charter captain for the most effective baits and techniques in the area.
No — when you book a charter in Grand Isle, your captain provides all required Louisiana fishing licenses as part of the trip.
Blackfin Tuna regulations in Louisiana include minimum size limits and bag limits that vary by season. Your captain will know the current regulations and ensure compliance.
While targeting Blackfin Tuna in Grand Isle, you may also catch Redfish, Speckled Trout, Sheepshead, Black Drum, Vermilion Snapper. Many charter trips target multiple species for the best action.
Ready to Catch Blackfin Tuna in Grand Isle?
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