Central PacificLuxury yachts
Los Sueños Marina
Air-conditioned sportfishing yachts from 36 to 52 ft — the same marina that hosts big-money billfish tournaments.
Private fishing charters • 7 Pacific coast locations
Fish species · Offshore
Blue Marlin Fishing in Costa Rica
The ultimate Pacific gamefish — explosive strikes, long runs and spectacular jumps. Learn when and where to find blue marlin in Costa Rica, how crews fish for them, and which charters give you the best shot.
- Peak: green season
- Catch & release
- Full-day & multi-day trips
- Los Sueños, Quepos, Golfito
Makaira nigricansScientific name
200–500 lbTypical Costa Rica fish
May – OctBest months
ReleasedCatch & release
Meet the fish
The king of the billfish
The blue marlin is the largest marlin in the Pacific and one of the most prized gamefish on earth. It has a cobalt-blue back, silver-white belly, faint vertical stripes and a long, rounded bill it uses to stun baitfish.
Females grow far larger than males — a big female can exceed 1,000 lb, while males rarely pass a few hundred pounds. Off Costa Rica, most blues hooked on charters fall in the 200–500 lb range, with bigger fish possible every season.
What makes a blue marlin special is the fight: a sudden strike in the spread, line screaming off the reel, and a fish that can leave the water again and again before it tires.
Explosive surface strikes
Long, powerful runs
Repeated jumps
Fights of 20 min to hours
When to go
Best time for blue marlin in Costa Rica
Blue marlin are caught year-round, but each region has its peak.
| Region | Best months | What to expect |
|---|---|---|
| North Pacific (Flamingo, Tamarindo, Papagayo) | May – October | Strong green-season marlin fishing, with blue, black and striped marlin possible. |
| Central Pacific (Los Sueños, Jacó, Quepos) | May – October, plus spells year-round | Blues mixed in with sailfish, tuna and mahi-mahi on full-day trips. |
| South Pacific (Golfito) | Green season and extended trips | Overnight and multi-day runs to offshore FADs and seamounts focused on blue marlin. |
| Offshore FADs & seamounts | Seasonal, multi-day | The best odds of multiple marlin shots per day, far from shore. |
Where to fish
Top blue marlin locations
Pick the port closest to your hotel — or the one that fits the kind of marlin trip you want.
Central Pacific
Central PacificBillfish capital
Quepos
One of the world’s best-known billfish ports. Full-day trips from Marina Pez Vela put you on marlin and sailfish water.
South PacificOvernight trips
Golfito
Multi-day expeditions to offshore FADs and seamounts — the choice for serious anglers chasing big blues.
North PacificGuanacaste
Flamingo
Quick access to deep water from Marina Flamingo, with strong green-season marlin fishing.
Central PacificMost boats
Jacó & Herradura
Offshore sportfishers and yachts close to Jacó hotels, 90 minutes from San José.
North PacificGuanacaste
Tamarindo
Full-day offshore trips from a favorite beach town — a great add-on to a Guanacaste vacation.
Want to target blue marlin?
Tell us your dates and where you’re staying — we’ll recommend the best port and boat for marlin.
How it’s done
How crews fish for blue marlin
Marlin fishing is a team effort between captain, mate and angler.
Covering water
Trolling Lures
The boat pulls a spread of large skirted lures and teasers at speed, covering miles of bluewater until a marlin rises behind the spread.
The classic
Bait & Switch
Hookless teasers raise the fish, then the mate pitches a rigged bait on a circle hook — giving the angler a clean, controlled bite.
Big fish
FADs & Seamounts
Far offshore, structure and bait concentrations hold marlin. Live baits and lures around FADs often mean several shots in a day.
Gear & conservation
Heavy tackle, gentle release
Charters targeting blue marlin carry stand-up and chair-rated tackle, typically 50 to 80-lb class reels, along with lighter outfits for sailfish and tuna. Circle hooks are standard, so fish are hooked in the corner of the mouth and released in good shape.
Billfish in Costa Rica are catch and release. Your crew will keep the marlin in the water, remove the hook or cut the leader close, and revive it before letting it go — and you’ll get your photos alongside the boat.
50–80 lb class tackle
Circle hooks
Fish kept in the water
Photos at the boat
Other marlin species
Blue, black and striped marlin
Costa Rica’s Pacific coast holds three marlin species — sometimes on the same trip.
Most sought
Blue Marlin
Big, fast and acrobatic. The main target of offshore and long-range marlin trips.
Heaviest fighters
Black Marlin
Stocky with rigid pectoral fins. Less common, but known for brute strength when hooked.
Smaller & agile
Striped Marlin
Slimmer with bold stripes and lots of jumps — a favorite on lighter tackle.
Marlin photos
Blue marlin in Costa Rica
More species
Other fish you can catch
Blue marlin FAQ
Questions about marlin fishing
When is the best time to catch blue marlin in Costa Rica?
Blue marlin are caught year-round, but the best fishing is usually from May to October, especially on the North and Central Pacific. Multi-day FAD trips from Golfito target marlin in their own seasons.
Where is the best place to fish for blue marlin?
Los Sueños and Quepos are top choices for day trips, Flamingo is excellent in the green season, and Golfito offers overnight trips to offshore FADs and seamounts for the best odds at big fish.
How big are blue marlin in Costa Rica?
Most blues hooked on charters weigh roughly 200 to 500 lb. Large females can exceed 1,000 lb, and fish of that size are possible every season.
Can I keep a blue marlin?
No. Billfish in Costa Rica are catch and release. The crew keeps the fish in the water, takes photos alongside the boat and releases it to fight again.
Do I need a full day to catch a marlin?
Yes, a full day is strongly recommended. Marlin water is usually well offshore, and the extra hours give the crew time to find fish and fight them properly.
Do I need experience to fight a blue marlin?
No. The crew coaches you through the whole fight — from the strike to the release. Beginners land marlin every season.
Ready to chase a blue marlin?
Send us your dates, group size and where you’re staying — we’ll match you with the best marlin boat and port.