Bluefin tuna firing off Half Moon Bay as El Niño sets the stage

What's Biting

What's Next

With the Last Quarter moon in play this week, tidal swings run moderate, a workable window for anglers targeting reef edges and kelp structure nearshore. Dawn and the early morning flood tide, as well as the evening ebb, typically produce the most consistent bite for rockfish and lingcod on the Central Coast. Midday and slack-water windows tend to slow, so plan your bottom time accordingly.

The more compelling story is offshore. The bluefin that showed near the Half Moon Bay Weather Buoy last week were found by the Codfather via trolling, per Western Outdoor News, and if bait concentrations hold in that zone, conditions through midweek could be favorable for similar approaches by six-pack and sport boats running out of Half Moon Bay and Monterey. Trolling remains the primary search tool when tuna are scattered and chumming has not yet been established. Once a school is located, transitioning to live bait or fly-lining sardines into a chum line typically improves hookup rates significantly.

Western Outdoor News is bullish on the broader El Niño picture through late June, with a June 28 charter aboard Sea Adventure 80 out of Point Loma set explicitly for tuna, yellowtail, and dorado. That program runs further south, but it reflects the same warm-water pattern affecting California coastal waters generally. Anglers planning an overnight or long-range trip in the final week of June should watch for yellowtail to enter the picture as surface temps continue to climb and northern anchovy schools push offshore along the Central Coast corridor.

Nearshore, track the Sargassum horneri situation before committing to a specific reef or kelp-edge spot. CCA California's new campaign highlights how quickly Devil Weed can displace productive kelp structure. If the weed has pushed through a familiar mark, fish may have relocated to adjacent areas with intact canopy, so it is worth checking current conditions before anchoring up.

Weekend timing: plan for the classic Central Coast June pattern of morning fog burning off by late morning, with light northwest winds building through the afternoon. Early departures are standard for offshore tuna runs. Nearshore bottomfish anglers can work the flood tide into midday before winds pick up and chop builds over the outer reefs.

Context

Early June sits at the hinge point of the Central Coast season. Spring upwelling, which pushes cold nutrient-rich water to the surface from roughly February through May, typically begins to ease as summer high pressure takes hold and surface winds relax. In most years this transition coincides with improved sea conditions and the start of the best nearshore rockfish and lingcod fishing of the year, with longer days allowing more productive bottom time on the outer reefs.

What distinguishes the current season is the El Niño signal noted by Western Outdoor News. In warm-water years, bluefin tuna push farther north along the California coast than they do during neutral or La Niña cycles. The Half Moon Bay sighting is consistent with that pattern: historically, meaningful Central Coast tuna fishing during El Niño events has produced action well north of the typical summer grounds, occasionally reaching Morro Bay latitude and beyond. Anglers who fished the 2014 to 2016 El Niño period will recognize the setup.

For nearshore species, June is typically on schedule for halibut over sand edges and inshore structure, with peak activity often running through July. Salmon season timing and open zones vary each year under state management; check current regulations before targeting Chinook in Central Coast waters.

No historical buoy data or season-over-season water temperature comparisons were available for this cycle, so it is not possible to quantify how current temps compare to prior years. The honest read: the El Niño pattern, if it holds, suggests above-average pelagic access and the potential for an extended tuna window into late summer.