Fall Pelagic Spearfishing Off San Diego: Bonito and Wahoo Season

September through November marks the most productive window for pelagic spearfishing off San Diego. Bonito and wahoo push inshore as water temperatures drop and baitfish concentrate along the coast, creating ideal conditions for hunters willing to venture beyond the kelp line.

Why Fall Matters for Bonito and Wahoo

San Diego’s pelagic season peaks when two factors align: warm water from summer lingers in the 68–72°F range, and the fall transition triggers baitfish migrations. Bonito (Sarda chiliensis) and wahoo (Acanthocybium solandri) follow these forage fish aggressively during this window. By November, water temperatures drop toward 65°F, and both species remain active but increasingly scattered.

Bonito are year-round residents off San Diego, but fall abundance reaches its peak. Wahoo are less predictable—some years they’re abundant from September onward; other years the window closes by early October. Check Element’s water temperature and swell forecasts to time your trips when conditions align.

Prime Locations Off San Diego

The Coronado Islands (Los Coronados) remain the most reliable fall destination. The deep water north and east of North Island holds bonito and wahoo in 150–300 feet of water. Current breaks and rocky terrain concentrate baitfish, making these zones consistent producers even when onshore conditions deteriorate.

Point Loma to the Kelp Forest offers closer-to-shore opportunity. The rocky reefs and kelp edges from Point Loma south toward the Kelp Forest attract bonito in September and early October when water is still warm. This zone is more accessible on marginal swell days and works well when offshore winds are weak.

The Coronado Bank (further south toward Mexico) produces larger wahoo in September, but requires a longer boat ride and reliable weather. Fall swells can make this zone sketchy; reserve it for stable high-pressure systems with light winds.

San Clemente Island waters occasionally see wahoo pushes in early fall, but they’re more reliable as a secondary option than a primary target.

Gear and Technique

Pelagic spearfishing off San Diego demands streamlined gear. Use a 5–7 mm thick wetsuit through October; water temperature drops quickly and you’ll spend 3–4 hours in the water. A 5mm hood is standard—bonito and wahoo have excellent vision, and silhouetting your head against the surface spooks fish.

Carry a 130–160 cm speargun (rail or roller) for bonito and small wahoo. If targeting larger wahoo (15+ lbs), step up to a 160+ cm gun with heavy bands. Bonito rarely exceed 10 lbs in San Diego waters, but they’re explosive and fast—a 130 cm gun with good band tension gives you accuracy and reload speed.

Use dark-colored spearguns and avoid chrome or polished surfaces that flash in sunlight. Bonito and wahoo hunt by sight; they’ll avoid anything that looks unnatural.

Freedive with a float and line in open water. Stay 100+ feet from the boat (where legal) and cover ground by moving along current breaks and rocky terrain. Bonito hunt in small groups; if you spot one, others are nearby. Wahoo are more solitary but follow the same baitfish concentrations.

Reading the Conditions

Swell and Wind: Fall swells from the south and southwest are normal. Bonito and wahoo aren’t deterred by moderate swell, but visibility suffers in rough water. Target days with under 4 feet of swell and light winds (under 10 knots) for best water clarity.

Current and Temperature: Strong northwesterly current off San Diego concentrates baitfish at the Coronado Islands. Check Element for current direction—bonito and wahoo position themselves at current breaks where forage stalls. Temperature drops of even 1–2°F can trigger feeding binges.

Clarity: Fall brings occasional murky water from upwelling and runoff, especially near river mouths and after rain. Stick to offshore zones (Los Coronados, the Kelp Forest) where clarity is more consistent. Aim for 40+ feet of visibility; anything less makes spotting pelagic fish difficult.

Time of Day: Early morning (6–8 AM) and late afternoon (3–5 PM) produce the most consistent action. Midday hunting is slower but still viable on clear days.

Seasonal Timeline

September: Peak bonito season. Water is warm, visibility is excellent, and fish are aggressive. Wahoo appear, but abundance varies year to year. This is your best bet for consistent action.

October: Bonito remain strong through mid-October; wahoo window narrows. Water cools to 67–68°F. Conditions are still excellent, but the season is shortening.

November: Bonito slow down noticeably. Wahoo are rare. Water drops to 64–65°F. Shift focus to kelp-based hunting or suspend pelagic trips until spring.

Safety and Logistics

Always hunt with a buddy and a dedicated boat operator. Pelagic zones off San Diego are exposed; weather can shift quickly. File a float plan and carry a VHF radio. Check Element’s wind and swell forecasts before committing to a Los Coronados run—swells can build fast, and the ride out can be rough.

Bonito and wahoo are aggressive predators. Stay alert for sharks and maintain situational awareness. Don’t hunt alone, and know your limits in open water.

Timing Your Season

Fall pelagic hunting off San Diego is a narrow window. By mid-November, the season effectively closes for bonito and wahoo. If you’re planning a trip, prioritize September and early October. Use Element to monitor water temperature, swell, wind, and current—these factors determine success more than any other variable.

Get on the water while conditions align, and you’ll connect with some of San Diego’s most aggressive gamefish. Track water conditions in real-time with Element to nail your timing and maximize your chances this fall.