Most fishing guides to Costa Rica give you one season: December through April, book early. That advice is correct for half the country and actively wrong for the other half. Costa Rica has two Pacific fishing coasts and their seasons run almost exactly opposite each other, which means there is no bad month to fish here. There are only wrong places in a given month. Here is which is which.
The inversion, in one paragraph
The central and southern Pacific, out of Quepos and Los Sueños, peaks in the dry season, December through April. That is when the sailfish arrive in numbers, the marlin run, and the tournaments fill the marinas.
Guanacaste, in the north, does the opposite. Its offshore season peaks May through August, and its worst months are the ones everyone assumes are best. The reason is wind. From around December through March the Papagayo winds blow twenty to thirty miles an hour across the northern Pacific most days, which makes rough water and pushes the warm blue water offshore and south. When those winds drop in May, Guanacaste turns on: the best sailfish numbers in the country, with blue and black marlin from June through August.
So the same week in July that has Quepos captains talking about dorado and tuna has Flamingo captains raising five to ten sailfish a day.
The calendar, by zone
| Month | Best zone | What is biting | Worth knowing |
|---|---|---|---|
| January to March | Quepos, Los Sueños | Sailfish at peak, blue and black marlin | The busiest stretch of the year. Book weeks or months ahead. |
| April | Quepos, Los Sueños | Sailfish tailing off, marlin still running | The last of the dry-season peak, and slightly easier to book. |
| May | Either coast | Central: dorado and tuna start. North: sailfish switch on | The crossover month, and the best value on the central coast. |
| June to August | Guanacaste | Sailfish at their best, blue and black marlin | The finding most people miss. Winds gone, water clean. |
| September | Guanacaste, Golfo Dulce | Dorado, tuna, wahoo, roosterfish | Quietest month on the central coast, rates bottom out. |
| October | Golfo Dulce | Inshore roosterfish, cubera snapper | Wettest month. The fjord fishes when the open coast will not. |
| November | Quepos, Los Sueños | Marlin numbers building, dorado still around | Dries out, and beats the December rush by a few weeks. |
| December | Quepos, Los Sueños | Sailfish arriving, marlin | Season opens on the central coast, closes offshore in the north. |
The four zones, and what each is actually for
Quepos and Manuel Antonio
The central Pacific's main fishery, out of Marina Pez Vela, twenty minutes from Manuel Antonio. Sailfish are the reason people come and they peak January through March. Inshore, roosterfish, snapper and grouper are catchable every month of the year, which matters when you have a mixed group and not everyone wants eight hours offshore. Green season, May through September, brings dorado, tuna and wahoo along with cheaper rates and an emptier town.
Our Quepos fishing seasons guide breaks this zone down species by species.
Los Sueños and Herradura
Same season as Quepos, different pitch. Los Sueños is about ninety minutes from San José airport, which makes it the practical choice for a short trip or a first day in the country. It is also the home of the biggest tournament series in Central America, so the fleet skews large and well equipped. If you are fishing one day on either end of a trip rather than building a week around it, this is the zone.
Guanacaste
The second-season destination, and the one that turns Costa Rica into a year-round fishery. Marina Flamingo is the only proper charter marina up there, so it is the only place you walk down a dock and step aboard; Playas del Coco and Tamarindo are beach departures where you board by tender. Worth knowing if you are bringing grandparents or small kids.
In the windy months the inshore fishing stays good even when offshore is a write-off: roosterfish along the rocky points all year, plus cubera snapper, grouper, jack crevalle and amberjack. If you have booked Guanacaste in January and the forecast is ugly, that is the day to take, not a cancellation.
The Guanacaste boats we track are all owner-operated or fleet operations with their own sites, not booking agencies.
Golfo Dulce
The wildcard, and the one that surprises people. It is a deep tropical fjord, one of only a handful on earth, which means it is sheltered and fishes on days when the open Pacific is rough. Roosterfish along the shoreline here are genuinely world class, there is cubera snapper in the rocks, and blue water off Matapalo and Zancudo is a short run for sailfish and tuna. It is also the least crowded fishery in the country.
Access is the trade: a short domestic flight from San José, or roughly six hours by road from Manuel Antonio. Most anglers fly, and it is worth it.
How to actually use this
- Trip already booked? Tell us the month and where you are staying, and we will tell you whether to fish locally or make a day of driving to a better coast.
- Trip not booked and fishing is the point? Let the season pick the coast. January means Quepos, July means Guanacaste, and you will have a better week for it.
- Mixed group where only some fish? Los Sueños and Quepos both have marinas with restaurants and things for the non-fishing half to do. Golfo Dulce does not, really.
- Weather looks bad? Ask before you cancel. Inshore usually still fishes, and the fjord almost always does.
Whichever month you are coming, there is a good day on the water somewhere in this country. The trick is being on the right coast when you take it.
