Cabo's April Tuna Season Rewards Anglers Who Read the Water

Mark enough fish on the sonar and refuse to get bit, and April at Cabo will teach you more about yellowfin tuna than a dozen July bluewater runs ever could. This is not a numbers month. The boats that come home heavy in April are the ones that committed to reading current edges, chose their bank deliberately, and knew exactly which three adjustments to ask the captain to make when the trolling spread stopped producing. Here is the on-the-water playbook.

Finding the Right Break Before You Ever Drop a Line

April water temperatures in Los Cabos run in the 70-75°F range offshore. That sits on the cooler end of what yellowfin prefer, which means bait aggregations and current interactions do most of the work of concentrating fish that raw temperature alone cannot. The break you are looking for is not just a temperature number; it is the visible seam where blue, clean water meets a greener, bait-laden color change. That transition line is where sardines, flying fish, and squid stack, and it is where yellowfin set up to feed.

The checklist for locating the break from the rail:

• Color changes: The shift from blue to green, or blue to a milky blue-green, marks the convergence zone. The cleaner the blue water, the better your lure presentation once you arrive.
• Bird life: Frigates and boobies working low and tight over a small area mean bait is being pushed to the surface. Scattered birds drifting high mean nothing specific.
• Dolphin pods: Yellowfin and dolphins share the same prey in April. A moving pod of spotted dolphins warrants an immediate course change. Position the boat ahead of their travel direction, not through the middle.
• Floating debris and weed lines: Current edges collect trash, kelp paddies, and foam lines. These concentrate baitfish, which in turn concentrate tuna. Never blow past a weed line in April without a slow pass.

Bank A vs Bank B: Gordo Banks vs 1150 Bank

These are the two primary April structures for Cabo yellowfin, and they are not interchangeable. Choosing wrong costs you three to four hours of fishing time.

The Gordo Banks sit 5-10 miles southeast of Cabo, divided into the Inner and Outer Banks. The Inner Gordo is panga range and holds roosterfish, snapper, and mixed reef species year-round, but the Outer Gordo at roughly 10 miles out is where the serious offshore fishing begins. Dorado, wahoo, yellowtail, amberjack, and tuna all converge on the Outer Gordo from April through November. The advantage here is fuel and time efficiency: a standard sportfisher can be on the Outer Gordo and fishing within 30 to 45 minutes of leaving the marina at Lands End. If live bait, specifically sardines or chiwilis, is available near the Inner Gordo on the way out, captains will often make bait there before pushing to the outer structure. The Gordo Banks reward anglers who want flexibility to adjust depth and drift angles quickly, and they are the right call on days when swell or wind makes a long offshore run uncomfortable.

The 1150 Bank is a different commitment entirely. Positioned 20-25 miles offshore between the San Lucas and San Jose del Cabo marinas, it blends deep-water Pacific structure with Sea of Cortez current characteristics, and that hybrid environment concentrates baitfish in a way the Gordo Banks cannot always match. Getting there requires a full-day trip of at least eight hours; a half-day charter will not give you enough time on the water to make the run worthwhile. The payoff is access to cow-class yellowfin that stage on deeper current edges and are less pressured than fish on the more accessible inner banks. April is when the 1150 Bank begins showing its season, as northbound migratory schools pile onto the structure.

The practical comparison: book the Gordo Banks when bait is available locally, swell is running above four feet, or your party includes anglers who struggle with long runs. Book the 1150 Bank when conditions are flat, your captain has recent intel showing clean blue water on the outer edge, and you are prepared to grind for a shot at a genuine trophy fish.

How Long to Commit to a Bank

This is the question that separates experienced captains from average ones, and it is worth asking directly before you leave the dock. A reasonable starting rule: give the troll 45 minutes to an hour on any new bank or temperature edge before making a judgment. If you are marking fish on the sonar but not generating strikes, that is not a signal to leave; it is a signal to change tactics on the spot. If the sonar is clean and birds are absent after a full hour, you move.

The mistake most first-timers make is pressuring the captain to leave a mark too early. Fish marked below the thermocline at 150-200 feet in April are not necessarily unwilling to eat. They may need the presentation changed, not the location. Hold your position when you are marking fish.

What to Do When Fish Mark But Won't Bite: The Three Adjustments

When the sonar is lit and the trolling spread is getting ignored, there is a specific sequence of adjustments that experienced Los Cabos captains run through. As a first-time charter angler, you can request all three.

Adjustment 1: Troll to Chum to Flyline

Pull the spread, set up a drift over the mark, and start a chum line. Cut sardines into chunks and throw a steady stream every 30 seconds downcurrent. Once tuna begin appearing in the slick, drop a freelined whole sardine back with the chum, no weight, no swivel, just hook and bait drifting naturally with the current. The flylined sardine in a live chum slick is the highest-percentage bite available when fish are visually present but not committing to trolled artificials.

Adjustment 2: Sardine to Squid

Sardines are the default bait in Los Cabos April fishing, and rightly so. But when fish are feeding selectively, which happens in the cooler 70-75°F water, a switch to squid can break the lock. Yellowfin that have seen a dozen sardines drift through the slick will often eat a squid on the first pass. Ask the captain to rig a whole squid on a short-shank circle hook and let it sink on a slow drift rather than presenting it at the surface.

Adjustment 3: Kite or Flat-Fall Jig at Dusk

The last 90 minutes of daylight in April trigger a predictable feeding window as yellowfin push bait to the surface in shallower water over the banks. Two presentations work especially well in this window. Kite fishing suspends live bait at the surface with no leader visible in the water, and the struggling action mimics a distressed fish perfectly. For larger fish staging below the school, a flat-fall vertical jig dropped to 150-200 feet and snapped upward erratically on the retrieve generates reaction strikes that nothing else will. Request at least one of these two setups during the final hour of your charter if the troll has been slow.

Putting It Together for a First-Time Charter Angler

April in Los Cabos is not a trip where you show up and let the boat do the work. The yellowfin are there. In good years, cow-class fish pushing 200 pounds have shown on the Gordo Banks in late March and held through April. But the fish that get caught are the ones that get found properly, on the right structure, with the right bait, after the right adjustment. Ask your captain where the most recent color change was sighted before you leave the dock. Confirm whether live bait is available for the morning departure. And if the trolling spread goes cold before noon, run through the three adjustments in sequence before you ever consider pulling off a mark.

The captains working the 1150 Bank and Outer Gordo in April are operating with hard-earned, ground-level knowledge of where current meets structure in this specific season. The anglers who listen, adapt, and stay patient on a productive mark are the ones who find out why April, despite its reputation for selectivity, can produce the most memorable yellowfin of the year.