Spearfishing Mackerel Runs Along the San Diego Coast: Peak Months and Locations

Pacific mackerel runs are one of San Diego’s most predictable and rewarding spearfishing opportunities. These fast, aggressive fish school in massive numbers along our coast during specific windows, and understanding when and where they show up is the difference between a productive day and going home empty-handed.

When Mackerel Run in San Diego

Mackerel runs follow water temperature and baitfish availability. In San Diego, expect two distinct seasons:

Spring Run (March–May): This is the primary mackerel season. As water temperatures warm from winter lows and kelp beds green up, mackerel migrate north along the coast in pursuit of small baitfish. April and May are typically the strongest months, with consistent schools pushing through local breaks and kelp forests. Water visibility is often 20–35 feet during this window, making visibility ideal for spearfishing.

Fall Run (September–November): A secondary but often less crowded opportunity. Mackerel return as water temperatures stabilize in the mid-60s and forage fish concentrate near shore. October is usually the sweet spot, though the run can extend into November if conditions hold.

Winter and early summer typically see fewer mackerel, though scattered fish remain year-round in deeper water. Avoid the peak summer months (June–August) when water warms above 70°F and most mackerel move offshore.

Best Spearfishing Locations

La Jolla Kelp: The gold standard for mackerel. The dense kelp forest off La Jolla Shores and Children’s Pool holds schools during runs. Mackerel cruise the kelp edges and open pockets where visibility is excellent. This is intermediate-to-advanced terrain—respect the kelp and watch for surge.

Pacific Beach Reef: The shallow reefs and structure near Pacific Beach Pier attract mackerel, especially during spring runs. Access is easier than La Jolla, and the smaller fish often found here are less line-shy than larger specimens.

Bird Rock (La Jolla): The rocky pinnacle and surrounding water column hold mackerel during peak months. This is an advanced location with significant surge and current, but the reward is large, aggressive fish in open water.

Mission Bay Kelp (South End): The kelp beds south of Sunset Cliffs offer a more protected option with consistent mackerel during spring runs. Visibility is often slightly lower than La Jolla, but the kelp is less chaotic, making it ideal for newer spearos.

Sunset Cliffs to Point Loma: The rocky coast and small reefs along Sunset Cliffs and the Point Loma area hold mackerel, particularly in April and May. Less crowded than La Jolla and good for targeting individual fish.

Coronado Islands (advanced): For boat-based spearos, the waters around the Coronado Islands and nearby pinnacles hold large schools during peak runs. This requires boat access and advanced skills, but the fishing can be exceptional.

Reading the Conditions

Water Temperature: Mackerel move into San Diego waters when temperatures hit 58–62°F. Monitor Element’s water temperature data—a rapid warming trend often triggers a run.

Visibility: Mackerel can be speared in 15+ feet of visibility, but 20–30 feet is optimal. Clarity typically improves in spring as kelp growth filters particulates.

Swell and Surge: Moderate swell (2–4 feet) often improves mackerel feeding. Avoid days with heavy surge that make targeting difficult. Early morning, before wind picks up, is usually best.

Baitfish Activity: Watch for bait balls and surface activity. Mackerel follow baitfish schools, so if you see nervous bait or diving birds, mackerel are likely nearby.

Spearfishing Tactics

Mackerel are aggressive but line-shy. Use a 6–7mm speargun with good range—mackerel move fast and you’ll often have only one shot. Aim for the gills or head; body shots often result in lost fish.

Hunt the edges of kelp, the transition zones where structure meets open water. Mackerel patrol these boundaries hunting for bait. Move slowly and avoid silhouetting yourself against lighter water.

Schools can be massive. Once you locate fish, stay calm and deliberate. Greedy spearos often miss multiple opportunities by rushing. One well-placed shot beats a dozen panicked attempts.

Spring runs in April and May offer the most consistent opportunity. If you’re new to spearfishing mackerel, start at Pacific Beach Reef or Mission Bay Kelp before tackling La Jolla’s more challenging conditions.

Wrapping Up

San Diego’s mackerel runs are a highlight of the spring spearfishing calendar. Mark April and May on your calendar, check Element for real-time visibility and temperature data, and get underwater during the peak window. The schools are there—you just need to be ready when they arrive.

Use Element to track visibility, swell, and water temperature forecasts so you never miss a mackerel run.