Salmon bite heats up as cool upwelling water settles across the NorCal coast

What's Biting

What's Next

The current setup is textbook late-spring NorCal: cold upwelling water pushing in, northwest winds building in the afternoon, and Chinook congregating wherever temperature breaks meet bait. With buoy 46026 already at 50°F — colder than the 54°F Half Moon Bay area water where Captain Jared Davis of the Salty Lady reported 'vastly improved' salmon action per Western Outdoor News — Saltwater — expect the bite to hold or improve through the week if upwelling winds ease overnight. The key variable is whether this cooling trend stabilizes; if surface temps drop another degree near the Farallones or off Bodega, krill and bait schools may push shallower, pulling Chinook within reach of the inside fleet.

The waxing crescent moon through mid-week keeps nights dark, which tends to concentrate salmon in shallower feeding lanes near dawn. Plan first-light windows carefully. The two-hour window on either side of sunrise has historically produced the most consistent hook-ups in conditions like these — trolled anchovies and spoons in the top 30 feet can be the ticket before any surface warmth sends fish deeper into the column.

Afternoon winds at 9 m/s on buoy 46013 off Bodega are worth monitoring. If northwest flow stiffens through midweek, target the early morning slot and plan to be back at the dock before afternoon chop builds. Vessels running north of the Gate toward Bodega Bay can encounter rough conditions quickly once the sea breeze establishes — a morning-only strategy is the safer play for smaller boats.

Rockfish and lingcod should hold well on nearshore structure and reefs throughout this forecast window. In 50°F water these species are squarely in their comfort zone, and if northwest chop keeps the salmon fleet closer to shore, nearshore rockfish structure becomes the practical backup. Pacific halibut inside SF Bay typically picks up through May and into June as the season advances — watch for baitfish concentrations on the shallower bay flats as a leading indicator of where fish will be holding. Striped bass are classically active in SF Bay during May; current edges and rip lines on the incoming tide are the traditional approach. Check current state regulations before targeting any of these species, as bag limits and seasonal restrictions typically apply.

Context

May is historically one of the stronger months for Chinook salmon along the NorCal coast. The fleet out of Bodega Bay, San Francisco, and Half Moon Bay has long come to expect the best action once cold upwelling water pushes sea surface temperatures into the low-to-mid 50s — precisely the range the buoy network is now showing. The 50°F reading at buoy 46026 off the Farallones is consistent with what productive springs typically deliver for this region.

What stands out in this season's early arc, per Western Outdoor News — Saltwater, is the magnitude of the temperature swing from opener to now. Half Moon Bay-area waters started the salmon season at 58°F on April 11 — notably warm for early spring — and have since dropped to 54°F and below. Captain Davis described the cooler water as making a 'huge difference on the water,' with visible sea conditions shifting alongside the improved bite. This pattern is familiar to veteran NorCal captains: warm, flat, greenish water tends to scatter bait and hold fewer Chinook near the surface, while cold, turbid, upwelling-influenced water concentrates forage and pulls fish up from depth.

Without additional charter logs or tackle-shop intel in the current data, it is difficult to benchmark this season's Chinook density against prior years. What the available data confirms is that the temperature trajectory is heading in the right direction, and that conditions right now are squarely within the productive window that NorCal salmon anglers target every May.