Late August Angling Report: Jaco and Los Sueños Waters
As August draws to a close, the Central Pacific waters off Jaco and Los Sueños are proving once again why this region is a world-class sportfishing destination. While the offshore bite has seen some changes compared to earlier in the year, anglers are still experiencing thrilling action both offshore and inshore. If you’re planning a fishing adventure before September rolls in, here’s what you can expect.
Offshore Fishing Report
Marlin
Late August has been quieter than usual for marlin hunters. Blue and black marlin have been rarely showing up over the past couple of weeks. While it’s still possible to raise one, the encounters have been scattered and far less frequent compared to peak marlin months like June or early July. For serious billfish anglers, patience is required right now — marlin are around, but they’re playing hard to get.
Sailfish
The sailfish bite has also slowed, though there are still a few sails around for those looking to check this acrobatic species off their list. Captains are reporting small packs of sailfish in deeper water, but it’s not a heavy bite. If you do raise a sailfish, the excitement of their jumps and speed makes the effort worthwhile.
Yellowfin Tuna
The real highlight offshore right now is yellowfin tuna. Schools of tuna, often traveling with pods of spinner dolphins, are putting on a show almost daily. Anglers have been landing plenty of fish, with sizes ranging from footballs to some very large tuna well over 100 pounds. These bruisers are testing anglers’ strength and endurance, creating unforgettable battles. For charters targeting meat fish, tuna provides non-stop action and a cooler full of fillets to take home.
It’s safe to say late August is shaping up to be one of the best tuna runs of the season so far.
Inshore Fishing Report
When the offshore bite slows for billfish, inshore waters around Jaco, Herradura, and the surrounding rocky points are delivering excellent action.
Roosterfish
The roosterfish bite has been excellent. Known for their striking appearance and powerful runs, roosters are one of Costa Rica’s most iconic inshore targets. Anglers are hooking into fish in the 20–40 lb range, with some even larger trophies making appearances. Popular spots near the river mouths and rocky ledges have been especially productive with live bait.
Snapper
Alongside roosters, snapper fishing has been fantastic. From cubera snapper in the deeper reefs to red snapper closer to shore, this month has been one of the best for anglers looking to take home fresh, delicious table fare. These powerful fish are not only fun to fight but also among the best-eating species in Costa Rica.
Other inshore catches include jacks and mackerel, rounding out what has been an action-packed inshore season.
Weather & Water Conditions
Late August brings the heart of the green season in Costa Rica, but fishing remains strong. Calm mornings are typical, with rain showers rolling through in the afternoons and evenings. Offshore waters have been generally calm, making it comfortable to run 20–40 miles out in search of tuna. Inshore, slightly stained water near river mouths has helped snapper and roosterfish feed aggressively.
Final Thoughts
If you’re chasing big marlin numbers, August may not be your month — but if you’re looking for action-packed days with hard-fighting tuna, trophy roosterfish, and plenty of snapper, this is the perfect time to fish Jaco and Los Sueños. The bite is red hot for tuna and inshore species, providing a mix of adrenaline and fresh fish for the table.
Whether you’re an experienced offshore angler or a family looking for steady rod-bending action inshore, late August has something special to offer.
Tip for Anglers: Bring a camera, because those big tuna and roosterfish will make for some brag-worthy photos. And don’t forget rain gear — the afternoon showers are part of the adventure this time of year.
