If you are looking for an unforgettable offshore fishing experience, chasing yellowfin tuna (also known as ahi) off the Fish Aggregating Device (FAD) buoys around Kauai is one of the best ways to land these powerful pelagic predators. Whether you are a seasoned angler or a first-timer, targeting ahi in the deep blue waters of Hawaii is a thrilling challenge that often leads to some of the most rewarding catches.
What Are FAD Buoys and Why Do They Attract Tuna?
FAD buoys are floating devices strategically placed offshore to create artificial fish habitats. These buoys attract baitfish, which in turn draw in larger predators like yellowfin tuna, mahi-mahi, wahoo (ono), and marlin. Kauai’s FADs, located several miles off the coast, are prime fishing hotspots where tuna frequently school up, making them a top destination for anglers targeting ahi.
Best Time to Catch Yellowfin Tuna in Kauai
While yellowfin tuna can be caught year-round in Hawaii, the peak season runs from May through September, when larger ahi in the 100–200+ pound range are more common. During this time, the waters around Kauai heat up with action, and anglers have a great chance of hooking into these powerful fish.
Techniques for Catching Yellowfin Tuna off FADs
1. Trolling with Artificial Lures
One of the most effective methods for catching ahi around FADs is trolling with high-speed lures such as:
Skirted trolling lures (Yozuri, Mold Craft, or C&H lures)
Cedar plugs (a favorite for yellowfin tuna)
Diving plugs (such as Rapala X-Rap Magnums)
Trolling at speeds of 6 to 10 knots with these lures mimics the movement of fleeing baitfish, enticing strikes from hungry tuna.
2. Live Baiting
Once you locate a school of ahi near a FAD, live bait fishing can be highly productive. Using small baitfish like:
Opelu (mackerel scad)
Aku (skipjack tuna)
Live bait is dropped down near the buoy, where it swims naturally, triggering aggressive bites from lurking yellowfin tuna. This method works well when trolling slows down or if tuna are schooling but not actively hitting lures.
3. Chunking & Chumming
For an extra advantage, some captains use chunking and chumming, which involves cutting up baitfish and tossing pieces into the water to create a feeding frenzy. This technique can keep tuna near the boat and increase your chances of multiple hookups.
4. Jigging for Tuna
Vertical jigging with heavy metal jigs (150g to 300g) is another effective technique, especially when tuna are holding deeper in the water column. Dropping a jig and working it aggressively through the water mimics a distressed baitfish, often triggering strikes from lurking ahi.
Tackle & Gear for Fighting Yellowfin Tuna
Since yellowfin tuna are strong, fast-swimming fish, you’ll need the right gear to handle their power:
Rods: Heavy-action trolling or stand-up rods (50-130 lb class)
Reels: Conventional reels like Shimano Tiagra or Penn International, spooled with 80–130 lb test line
Leaders: 80-150 lb fluorocarbon leaders for abrasion resistance
Hooks: Circle hooks (for live bait) or J-hooks for trolling
What to Expect on a Kauai Deep Sea Fishing Trip
A charter fishing trip in Kauai usually starts early in the morning, heading 3-4 miles offshore to target FAD buoys. The boat ride alone is an adventure, offering breathtaking views of Kauai and the deep Pacific waters. Once at the buoys, expect adrenaline-pumping action, as yellowfin tuna can strike at any moment.
Ahi are known for their powerful runs, often peeling off hundreds of yards of line in seconds. A battle with a large yellowfin can last anywhere from 30 minutes to over an hour, testing your endurance and skill.
The Reward: Fresh Ahi Tuna
One of the best parts of catching yellowfin tuna in Kauai? The reward of fresh ahi sashimi, poke, or grilled steaks after a successful day on the water. Many local charters will clean and filet your catch so you can enjoy the freshest seafood possible.
Final Tips for a Successful Ahi Fishing Trip
Book with an experienced charter: Local captains know the best FADs and techniques for targeting yellowfin.
Be patient: Sometimes the bite is slow, but when tuna show up, the action can be non-stop.
Stay hydrated: Deep sea fishing can be physically demanding, especially in the Hawaiian sun.
Bring a cooler: If you land a big ahi, you’ll want to keep your fish fresh for the trip home.
Fishing for yellowfin tuna off Kauai’s FAD buoys is an exhilarating experience that every angler should try. Whether you’re trolling, live baiting, or jigging, the thrill of hooking into an ahi in the deep blue waters of Hawaii is unbeatable. If you’re planning a fishing trip to Kauai, be ready for an adventure because once a yellowfin strikes, you’re in for the fight of a lifetime.
Tight lines and good luck on your Kauai deep sea fishing trip!
