When anglers ask about the peak of summer sportfishing, one destination always stands out—August fishing in Los Cabos. This month is when the warm Pacific currents and the nutrient-rich Sea of Cortez collide, creating perfect conditions for some of the most exciting offshore and inshore fishing action of the year. Whether you’re after legendary billfish, tasty dorado, or powerful tuna, August sets the stage for unforgettable adventures on the water.
Why August Fishing in Los Cabos Is Special
August fishing in Los Cabos is different from other times of the year because the seas are at their warmest and the migratory species are fully present. Offshore, deep blue waters attract marlin, sailfish, and yellowfin tuna in abundance. Inshore, roosterfish, snapper, and jack crevalle remain active along the sandy beaches and rocky drop-offs. This unique overlap makes August one of the most versatile fishing months in Cabo.
Blue Marlin and Black Marlin Dominate
One of the major highlights of August fishing in Los Cabos is the arrival of larger marlin species. Blue marlin and black marlin reach their seasonal peak, with many fish ranging from 200 to 600 pounds, and the occasional monster exceeding 1,000 pounds. Anglers often troll with large artificial lures, teasers, or live skipjack to tempt these predators. August is considered one of the top months if your dream is to hook into a “grander” marlin.
Striped Marlin Remain Available
While blue and black marlin grab the spotlight, striped marlin continue to be caught during August fishing in Los Cabos. Although not as dense as in the spring months, enough stripers stick around to give anglers a shot at a mixed-billfish day. This creates opportunities for the coveted Los Cabos Billfish Grand Slam, where a striped, blue, and black marlin can all be caught in one trip.
Yellowfin Tuna Peak in August
For many anglers, the biggest thrill of August fishing in Los Cabos is chasing yellowfin tuna. Schools of “football-sized” tuna in the 20- to 40-pound range provide plenty of action, but this is also the time when 100- to 200-pound cow tuna show up at famous offshore banks like the Gordo Banks, San Jaime, and the 1150 Spot. Tactics like kite fishing, trolling flying fish lures, and chunking live bait often produce spectacular hookups.
Dorado Bring Color and Flavor
August is also one of the best months for dorado (mahi-mahi). These brilliantly colored fish are plentiful near floating debris, weed lines, and offshore currents. August fishing in Los Cabos means plenty of fast dorado action, often in pairs or small schools. Not only are dorado exciting to catch with their leaping fights, but they’re also a favorite for fresh Cabo dinners, grilled or prepared Mexican-style at local restaurants.
Sailfish in the Mix
Another exciting aspect of August fishing in Los Cabos is the increased presence of sailfish. These acrobatic billfish thrive in the warm water, often found around the same zones as marlin and tuna. Their lightning-fast runs and spectacular jumps make them a favorite among light-tackle anglers. Many boats hook both sailfish and marlin in the same day during August.
Wahoo Strike Hard in August

High-speed predators like wahoo are also a key feature of August fishing in Los Cabos. These razor-toothed fish strike hard and run fast, often caught while trolling lures or live bait at higher speeds. While wahoo aren’t as predictable as marlin or tuna, August gives anglers a much better shot at these prized fish, particularly around offshore structure and seamounts.
Inshore Opportunities Remain Strong
While much of the spotlight is on offshore giants, inshore species thrive during August fishing in Los Cabos. Roosterfish patrol the beaches and rocky shorelines, offering thrilling sight-casting opportunities. Snapper, grouper, and amberjack remain active around reefs and drop-offs. For those who prefer lighter tackle or shorter trips, August provides plenty of action close to shore.
Weather and Sea Conditions in August
Another factor making August fishing in Los Cabos attractive is the weather. Expect hot, sunny days with calm mornings and light afternoon breezes. Water temperatures often hover between 80–85°F, perfect for attracting warm-water pelagic species. While August is part of the tropical storm season, most days are ideal for fishing, with only occasional rain showers.
Planning Your August Fishing Trip
If you’re considering August fishing in Los Cabos, it’s wise to book your charter in advance. This is one of the most popular months of the year, especially for anglers chasing marlin and tuna. Choose from half-day inshore trips or full-day offshore adventures depending on your fishing goals. Bring lightweight clothing, sun protection, and be ready for high-energy action.
For reservations and more details, call +52 624 122 1648 to connect with the team at Fishing Cabo San Lucas.
Final Thoughts on August Fishing in Los Cabos
If you’re an angler looking for variety, intensity, and trophy-sized opportunities, August fishing in Los Cabos is hard to beat. With marlin, tuna, dorado, wahoo, and sailfish all available in abundance, this month offers the full package of offshore and inshore excitement. Every cast has the potential to deliver the fish of a lifetime.

