Northern California bluefin bite hits historic highs off Half Moon Bay

What's biting

What's next

The offshore story right now is bluefin, and per Western Outdoor News — Saltwater the trend line has been straight up for weeks — what was a notable five-fish day recently has become commonplace out of Half Moon Bay, with boats like Tanker City Sport Fishing posting mixed-size bluefin well into the 130-170 pound class. Absent contradicting signals, that kind of run typically holds as long as warm water and bait stay stacked in range, so anglers planning an offshore trip in the next few days should expect the bite to still be live, with the best window likely early morning before wind builds over the afternoon.

We don't have current buoy or nearshore gauge data for SF Bay or Bodega this cycle, which limits how precisely we can call sea state or water temp trend — check a local marine forecast before committing to an offshore run, especially given how far some of these bluefin trips are pushing to reach fish.

Inshore, early September is a transition period for the Bay's bread-and-butter fisheries. Salmon typically remain catchable into the month before effort tapers, rockfish and lingcod stay a reliable year-round backup over structure when weather keeps boats closer to the beach, and striped bass fishing in the Bay's shallows and sloughs usually starts building again as water begins to cool into fall. None of these have fresh source reports this week, so treat that as the seasonal expectation rather than a confirmed bite.

The waning gibbous moon this week means moderate tidal swings rather than the extremes of a full or new moon — worth factoring into slack-tide planning for structure fishing, but not a major driver either way. Weekend anglers should prioritize the offshore tuna grounds while the bluefin run holds, and keep an eye out for updated local reports on salmon and striper activity as the water cools through September.

Context

Western Outdoor News — Saltwater frames the current Half Moon Bay bluefin action as genuinely unusual, not a typical seasonal event — the report explicitly notes that a five-fish day, 'previously unheard of,' has become 'increasingly commonplace,' with boats now landing half a dozen fish well over 100 pounds in a single trip. That reads as an above-average, possibly historic year for Northern California bluefin specifically, rather than the norm for this fishery.

Outside of that offshore signal, we don't have comparative data in this cycle's angler intel for how the Bay's usual saltwater staples — salmon, rockfish, striped bass — are tracking against a typical early September in the SF Bay and Bodega region. Historically this is a shoulder-season stretch: summer salmon effort is winding down, groundfish stays a steady year-round option, and striper fishing in the Bay traditionally starts to pick back up as water temperatures ease into fall. Whether this year is running early, late, or on schedule for those fisheries isn't something the current sources speak to, and it would be padding to guess further. The one clear, source-backed takeaway is that the offshore tuna grounds are having a standout year, and that's worth planning around if a longer-range trip is on the table.