Year-round big game fishing is what you can expect here. Costa Rica is considered by many to be one of the top fishing destinations in the world. Pacific Sailfish (much larger than their Atlantic cousins), Marlin, Dorado, and 200lb. Tuna abound in these waters. The wind patterns blow to the Northern part of Costa Rica, so we usually enjoy flat seas.
It's common to hook and release a dozen or more sails and even a marlin or two in a single day. The all-time tournament record of 1,691 billfish released by four anglers in 120 days was established in Costa Rica a few years ago during the International Sailfish Tournament. At last count, there were more than 70 current IGFA world record fish from Costa Rican waters including 17 all-tackle marks. It's also not uncommon to hear about a couple Super Grand Slams (sailfish, blue, black and striped marlin released on the same day) each year, and during the peak season its routine to get a Grand Slam (three of the four billfish species released on the same day).
Marlin: October is normally the top month for marlin in this area, but action is also good in September and November. Occasional blues and rare blacks are likely to be found anytime of the year.
Sailfish: These fish are taken here all year long, and many captains don’t believe the action really changes throughout the year except for a slow week here and there. Others believe the middle of December to the end of April is the best time with the biggest schools moving in about February.
Tuna: Found throughout the year as they are all along the Pacific coast, but most abundant from about June through September. They range from 10-300 pounds!.
Dorado: Best action begins with the winter rains that start in late May and wash debris from the river mouths creating the inshore trash lines that these dolphin favor. But again, this is another fish that is taken year around as well.
Roosterfish: Fishing for this hard hitting inshore species is incredible, with the best spots off the river mouths and the rocky drop offs. Best fishing is from December through early May.
Snook: Favored spots are just off the many river mouths all along the coast, up the Sierpe River and the big lagoon on the Sierpe. The IGFA World Record Pacific Black Snook was taken in the month of July at the mouth the Rio Naranjo on a boat trolling just outside the breaker line. The best months seem to be from July through November during the rainy season. But snook are heavily caught in the dry season as well.