Night Jigging for Bluefin Tuna in San Diego: The Complete Guide

Last updated: September 2026

Night bluefin hold 30–60 fathoms down (180–360 ft) off San Diego, feeding on squid and forage rising with the deep scattering layer after dark. Drop a 250–400g jig to that zone and crank as soon as it hits bottom — big bluefin get noticeably less wary once the sun is down, which is why the night bite can out-produce the same boat's daytime stop on the same school.

What's below is grounded in the same design thinking behind the Torpedo and Moon Drop — built specifically to stay vertical and hold a jig in the strike zone instead of scoping out on the drop, the same failure mode that ruins more night drops than any other single mistake.

What depth do bluefin hold at during night jigging in San Diego?

Thirty to 60 fathoms — 180 to 360 feet — is the prime night zone, though fish marked above 50 fathoms (300 ft) tend to bite better than fish sitting deeper than that. Bluefin retreat to depth during the day and rise at night to intercept the deep scattering layer: the mass of squid and small forage that migrates up from the deep water after dark. That vertical migration is the whole reason night jigging works — you're not searching for fish, you're meeting a shift change that happens on a schedule.

What jig weight and style works for night bluefin?

Match weight to the mark at roughly a gram per foot, the same rule that governs daytime jigging: 250g for marks around 100–250 ft, 300g for 150–300 ft, 400g once the captain calls a deeper stop or current picks up. The full breakdown of how current and line diameter shift that number is in the gram-to-foot rule. At night, carry the heavier half of your range — 380–400g and up — since the deep scattering layer often sits at the bottom edge of the 60-fathom window, and you won't have daylight to read your line angle and correct a jig that's scoping out.

Jig material matters more at night, not less: tungsten holds a smaller profile at the same weight, which stays vertical in current with less bulk to feel, while a flat-back lead design fights scope-out through shape instead of density. Neither is wrong, but they solve the same problem differently — see tungsten vs. lead tuna jigs for the full trade-off.

Whether the jig needs to glow is genuinely unsettled among experienced night anglers. Some fish glow patterns exclusively after dark and swear by recharging them under a dive light between drops; others fish the exact same profile in a non-glow colorway all night and do just as well, arguing the flash and fall action matter more than the glow itself. Until there's a controlled side-by-side, treat it as angler preference rather than a settled rule — rig what you have confidence in and let the depth and the drop do the work.

Why do bluefin bite better at night than during the day?

Reduced wariness, not a different fish. The same bluefin that ignores a jig at noon in gin-clear water will eat aggressively at 1am in the same spot, because low light strips away the visual caution that makes big fish inspect a bait before committing. Boats that mark uncooperative fish on the sounder all afternoon will frequently anchor on the exact same school after dark and load the deck.

What gear do you actually need?

Heavy conventional or spinning gear built for fish you can't size up before they eat — when the boat stops on a school at night, you don't know if you're dropping into 30-pound football fish or a 200-plus-pound cow until it's hooked. That uncertainty is why the gear skews heavier than daytime jigging tackle across the board: heavier braid, a reel with enough drag to stop a big fish from spooling you in the dark, and a rod with the backbone to lift instead of just bend.

Two mechanical problems show up more at night than during the day. First, line twist — hours of straight up-and-down cranking without the visual feedback of daylight lets braid coil on itself, and a twisted line loses hookup ratio long before it looks obviously bad. Check it every few drops, not just when a backlash forces the issue. Second, leader choice flips from the daytime default: go heavier after dark, not lighter, since low-light bites are more committed and a fish that's already eating aggressively doesn't need a finesse leader — it needs one that survives the fight.

What mistakes cost anglers the most fish at night?

Two show up over and over. The first is fishing the wrong depth — dropping on the captain's called mark instead of watching your own line angle, so a jig that's scoping out in current quietly fishes 50 feet above where the captain thinks it is. The fix is the same day or night: if the line isn't dropping close to vertical, it's a weight problem, not a patience problem. The second is physical — arms give out from constant heavy cranking well before the bite actually turns on, since the best window is often well after midnight. Pace the retrieve instead of burning out in the first hour, and you'll still have something left when the school actually commits.

FAQ

What's the bag limit for bluefin tuna out of San Diego?

California's special limit is 2 bluefin tuna per angler per day, on top of the general 20-finfish bag. Multi-day trips allow more: 4 fish on a 2-day trip, 6 fish on a trip of 3 or more days. Confirmed against the CDFW Marine Region FAQ.

Do you need a glow jig for night jigging bluefin?

It's genuinely debated. Some anglers fish glow exclusively at night and recharge between drops; others do just as well on non-glow colorways in the same conditions. No controlled comparison settles it either way — fish what you trust.

What size jig should I bring for a night trip?

Carry the same gram-to-foot range you'd fish during the day, but weighted toward the heavier end — 250–400g, leaning on 350–400g since the deep scattering layer often sits near the bottom of the 30–60 fathom window.

What's the best time of night to jig for bluefin?

There's no fixed clock time — it tracks the deep scattering layer's rise, which shifts with moon phase and location. Many of the best bites land well after midnight, which is also why pacing your retrieve matters more than an early burst of energy.

Can you fish lighter tackle for bluefin at night?

Not recommended. You can't size up the fish before it eats in the dark, and a 200-pound-plus cow on gear built for 30-pounders ends in a lost fish and a spooled reel, not a landed one.

The jig I'd tie on for a night trip in that depth window is the Torpedo — 300g for 250–300 ft, 400g once the mark or the current calls for more. Non-glow, built to hold vertical on the drop through shape rather than density; glow debate aside, staying vertical is what actually keeps a jig in the strike zone. Shop the Torpedo Duo.