Yellowfin Tuna Fishing in Tamarindo: When, Where & How to Catch Giants

Yellowfin Tuna: Tamarindo's Green Season Trophy

If marlin and sailfish rule the dry season, yellowfin tuna own the green season. From May through October, massive schools of yellowfin tuna sweep through Guanacaste's offshore waters, providing some of the most exciting and rewarding fishing Tamarindo has to offer. The combination of brute power, incredible speed, and world-class eating quality makes yellowfin the complete package for anglers.

Peak Season for Yellowfin in Tamarindo

Prime Months: May Through October

• May: First big schools arrive, following warm currents and baitfish. Fish average 30-60 lbs with scattered larger specimens.
• June: Numbers build significantly. Schools of 40-80 lb fish are common under bird flocks and dolphin pods.
• July: Often the peak month. Trophy potential increases with fish regularly exceeding 100 lbs. Schools are thick and aggressive.
• August: Continues strong. Consistent action with good size variety. Often the best value month for tuna trips.
• September: Schools remain. Slightly less predictable day-to-day but can produce the biggest individual fish of the season.
• October: Tuna taper as the season transitions, but solid fishing continues into mid-month.

Off-Season Tuna (November Through April)

Yellowfin do not completely disappear. Scattered fish, especially around the Catalina Islands and offshore seamounts, show up year-round. But for dedicated tuna targeting, May through October is when to come.

Where We Find Them

Following the Signs

Yellowfin tuna are schooling fish that travel in large groups. Our captains locate them using:

• Spinner dolphins — Tuna and dolphins feed on the same baitfish. A pod of spinning dolphins almost always means tuna below.
• Bird activity — Frigate birds, boobies, and terns diving on baitfish signal tuna pushing bait to the surface.
• Floating debris — Logs, debris lines, and FADs (fish aggregating devices) concentrate baitfish and tuna.
• Temperature breaks — Where warm and cool currents meet, baitfish stack up and tuna follow.
• Sonar and electronics — Modern fish finders show schools at depth that are not visible on the surface.

Key Locations

• 20-35 miles offshore — Over the continental shelf edge
• Catalina Islands area — Structure attracts baitfish year-round
• Offshore seamounts — Underwater mountains that concentrate marine life
• Current edges — Where different water temperatures and colors meet

Techniques That Produce

1. Running and Gunning (Most Exciting)

When we spot bird flocks or dolphin pods from a distance, we run at full speed toward the activity. As we approach, we can see tuna crashing on the surface. The crew deploys lures or live baits into the frenzy. Hookups are often instant and explosive.

2. Trolling

Covering water with a spread of:

• Cedar plugs — Classic tuna producers
• Jet heads — Run subsurface at speed
• Rapalas — Diving lures that mimic baitfish
• Feather jigs — Simple and deadly for tuna
• Skirted lures — Larger profiles for bigger fish

Trolling speed: 6-9 knots depending on lure type.

3. Chunking

When a school is located, we stop the boat and begin cutting baitfish (bonito, skipjack) into chunks, creating a "slick" that draws tuna to the boat. Then we drift a fresh chunk on a hook back into the slick. This method produces the biggest fish because you can select for size.

4. Popping and Jigging

• Topwater poppers — Large cup-face plugs cast into feeding schools. The strike on topwater is unforgettable.
• Vertical jigging — Heavy metal jigs dropped below the boat and worked with aggressive rod action. Deadly when tuna are deep.
• Stickbaits — Sinking lures walked through the water column.

5. Live Bait

Small skipjack tuna, bonito, or sardines fished on circle hooks produce consistent hookups. We often catch bait first, then target the bigger yellowfin.

Tackle for Yellowfin

All tackle is provided on our charters. We carry gear appropriate for everything from school-size 30 lb fish to trophy 200+ lb giants.

What the Fight is Like

Yellowfin tuna are pure power. Unlike billfish that jump and run, tuna fight dirty:

• Initial run: Screaming drag, 100+ yards of line disappearing in seconds
• Deep diving: Tuna head straight down, using their body shape to plane against the drag
• Circling: Large fish circle under the boat, making it feel like pulling up a Volkswagen
• Stamina: No quit. A 100 lb tuna can take 20-40 minutes of hard fighting
• Multiple runs: Just when you think they are done, they find another gear

The physical effort is significant. You will feel it in your arms, back, and legs. But the reward — landing a beautiful chrome-and-gold torpedo — is worth every ounce of effort.

Yellowfin on the Table

Yellowfin tuna is among the finest eating fish in the ocean:

• Sashimi and sushi — Restaurant-quality right off the boat
• Seared rare — Sesame-crusted with wasabi and soy
• Poke bowls — Cubed with avocado and soy
• Grilled steaks — Thick cuts cooked medium-rare
• Ceviche — Fresh and citrus-cured

Our crew fillets your tuna on the boat and bags it on ice. Take it to any Tamarindo restaurant for a "cook your catch" meal you will never forget.

Size Expectations

• Average catch: 40-80 lbs
• Good fish: 80-120 lbs
• Trophy: 150-200+ lbs
• Costa Rica record potential: 300+ lbs (rare but possible)
• Typical day: 3-8 yellowfin landed depending on school size and cooperation

Best Trip Type for Tuna

• Full-day offshore (7-8 hours): Ideal for dedicated tuna targeting
• Half-day offshore (5-6 hours): Can work if schools are close, but limits search time
• Best months to book: June, July, and August for most consistent action

Book Your Tuna Trip

Green season is tuna season, and it offers the best charter value of the year. Contact us with your dates and we will put you on the schools. Bring your appetite — you are going to want to eat what you catch.