Louisiana · Southeast Louisiana
DEEP SEA FISHING FISHING
IN GRAND ISLE
Explore the best deep sea fishing fishing charters in Grand Isle. Book verified captains, compare prices, and fish the legendary deep Gulf waters beyond the continental shelf, blue water, and offshore reefs.
About Deep Sea Fishing Fishing in Grand Isle
Grand Isle, Louisiana offers some of the finest deep sea fishing fishing on the Gulf Coast. Grand Isle is Louisiana's only inhabited barrier island and a legendary fishing destination that hosts some of the most prestigious fishing tournaments in the Gulf of Mexico. The offshore waters around the oil platforms and natural reefs produce exceptional catches of yellowfin tuna, red snapper, amberjack, cobia, mahi mahi, and wahoo. The famous Midnight Lump and other offshore structures are bucket-list destinations for serious offshore anglers. Inshore, the surrounding marshes, bays, and passes hold outstanding populations of redfish, speckled trout, flounder, and sheepshead. The island's jetties and the Caminada Pass are productive year-round fishing spots that concentrate baitfish and gamefish alike. Grand Isle's Cajun culture, legendary fish frys, and proximity to both incredible inshore marsh fishing and world-class offshore grounds make it a truly unique Gulf Coast fishing destination. The deep sea fishing waters here — deep Gulf waters beyond the continental shelf, blue water, and offshore reefs — provide world-class angling opportunities that draw fishermen from across the country.
Deep Sea Fishing anglers in Grand Isle target an impressive roster of species including Blackfin Tuna, Wahoo, Yellowfin Tuna, Swordfish, Mahi Mahi and more. Peak season runs through May, June, April, but productive deep sea fishing fishing is available year-round.
We're actively partnering with the best deep sea fishing fishing captains in Grand Isle. Request a quote and we'll connect you with a top-rated local captain. All charters include gear, bait, tackle, Louisiana fishing licenses, and fish cleaning — everything you need for an unforgettable day on the water.
What's Biting in Grand Isle This September
Deep Sea Fishing Fishing Calendar — Grand Isle
Month-by-month availability for deep sea fishing species. Plan your trip around peak season for the best action.
| Species | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Blackfin Tuna |
F
|
G
|
G
|
P
|
G
|
G
|
F
|
—
|
—
|
F
|
G
|
F
|
| Wahoo |
F
|
—
|
—
|
—
|
—
|
—
|
—
|
—
|
—
|
G
|
G
|
F
|
| Yellowfin Tuna |
—
|
F
|
G
|
G
|
P
|
G
|
G
|
F
|
F
|
G
|
F
|
—
|
| Swordfish |
—
|
—
|
F
|
G
|
G
|
G
|
F
|
F
|
F
|
G
|
—
|
—
|
| Mahi Mahi |
—
|
—
|
—
|
F
|
G
|
P
|
P
|
G
|
G
|
—
|
—
|
—
|
| Blue Marlin |
—
|
—
|
—
|
—
|
—
|
F
|
G
|
G
|
F
|
—
|
—
|
—
|
Best Deep Sea Fishing Fishing Spots in Grand Isle
From legendary bays to productive reefs, here are the top deep sea fishing fishing spots your captain will target in the Grand Isle area.
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.
Top Deep Sea Fishing Fish Species in Grand Isle
These are the primary deep sea fishing species you'll target on a Grand Isle charter. Click any species to learn more.
Blackfin Tuna
Thunnus atlanticus
Peak: Apr
Smaller cousin of the yellowfin but excellent eating and great light-tackle sport.
Wahoo
Acanthocybium solandri
One of the fastest fish in the ocean. Prized for firm, white flesh and blistering runs.
Yellowfin Tuna
Thunnus albacares
Peak: May
A powerful open-water predator prized for sashimi-grade flesh. Found in blue water near rips and structure.
Swordfish
Xiphias gladius
An iconic deep-water species prized for incredible fights and outstanding flesh.
Mahi Mahi
Coryphaena hippurus
Peak: Jun, Jul
Also called Dolphin or Dorado. Stunningly beautiful and acrobatic. Excellent eating.
Blue Marlin
Makaira nigricans
The ultimate big game fish. Spectacular fighters that can exceed 1,000 pounds.
Deep Sea Fishing Fishing Boats & Tackle in Grand Isle
Here's what to expect when you book a deep sea fishing charter in Grand Isle.
Boats
Deep Sea Fishing fishing in Grand Isle is typically done on center consoles, sportfishers, and offshore charter boats (28-65 ft).
Tackle & Gear
Deep Sea Fishing charters in Grand Isle typically use heavy conventional and trolling gear with 30-80 lb test line. Live bait, trolling lures, and heavy jigs are standard.
What to Bring
Motion sickness medication (if prone), sunscreen, hat, light rain jacket, non-marking shoes, food and drinks. All fishing gear and licenses provided by the captain.
Deep Sea Fishing Fishing Charters in Grand Isle
We're partnering with top deep sea fishing fishing captains in Grand Isle. Request a quote below and we'll match you with the best local experts.
Captains Coming Soon to Saltwater Pros
We're actively partnering with the best deep sea fishing fishing captains in Grand Isle. Request a quote and we'll connect you with a top-rated local captain within 24 hours.
Request a Free QuoteFrequently Asked Questions About Deep Sea Fishing Fishing in Grand Isle
Deep sea fishing 20+ miles out. Chase tuna, marlin, mahi mahi, wahoo and other pelagic gamefish in blue water.
The top deep sea fishing species in Grand Isle include Blackfin Tuna, Wahoo, Yellowfin Tuna, Swordfish, Mahi Mahi, Blue Marlin. Availability varies by season — check our seasonal calendar above for month-by-month details.
The peak months for deep sea fishing fishing in Grand Isle are May, June, April, when the most species are at peak availability. However, Grand Isle offers productive deep sea fishing fishing year-round.
Deep Sea Fishing fishing in Grand Isle is typically done on center consoles, sportfishers, and offshore charter boats (28-65 ft). These vessels are specifically designed for navigating the deep Gulf waters beyond the continental shelf, blue water, and offshore reefs.
No — when you book a charter in Grand Isle, your captain provides all required Louisiana fishing licenses as part of the trip. You don't need to purchase a separate license.
Motion sickness medication (if prone), sunscreen, hat, light rain jacket, non-marking shoes, food and drinks. All fishing gear and licenses provided by the captain.
Deep Sea Fishing fishing can be more challenging due to longer boat rides and heavier tackle, but experienced captains in Grand Isle welcome anglers of all skill levels. Let your captain know your experience level when booking so they can tailor the trip accordingly.
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