Coho salmon prime window opens on Chicago's Lake Michigan lakefront

What's Biting

What's Next

Without current buoy readings for the Chicago nearshore zone, precise water temperature and surface conditions for the coming days aren't available in this update. Historically, Lake Michigan surface temps at the Chicago lakefront work from the upper 40s into the mid-50s°F through the first two weeks of May — a range that keeps coho actively feeding in the top 20–30 feet of the water column. If temps have already reached the low-to-mid 50s range, expect coho to hold shallow on overcast days and ease slightly deeper on bright, calm afternoons when surface light penetration is high.

Through the rest of May, trolling with spoons and stickbaits on planer boards is the standard Chicago lakefront approach for coho. Presentations run 10–40 feet down — shallower early in the month, gradually deeper as surface temps climb toward the upper 50s. The WI DNR Lake Michigan Fishing Report's record 2024 coho harvest, powered by strong alewife forage, suggests well-conditioned fish should be available to reward consistent effort this spring.

Northeast winds are a consistent challenge on the Chicago lakefront in May — they pile fetch against the shore, create short steep chop, and can shut down small-boat access with little warning. Watch for southwest or south wind windows, which typically flatten conditions and allow productive morning trolling runs along the breakwalls and offshore drop-offs. The last-quarter moon this weekend concentrates prime feeding activity in the early morning and late evening hours; planning a pre-dawn launch around a favorable wind break is the best play.

Chinook salmon typically become the primary target as May deepens and surface temps push into the upper 50s and low 60s. Rigger depths and trolling speeds will need adjustment as the thermal gradient sharpens. Yellow perch and smallmouth bass round out the nearshore picture — perch on rocky structure and pier pilings, bass increasingly active on breakwall edges and submerged reefs. Once IL/IN Sea Grant's three nearshore buoy stations are fully deployed and reporting, those real-time temperature and wave readings will sharpen depth selection and trip timing considerably for the weeks ahead.

Context

The record 2024 coho and Chinook harvest numbers cited by the WI DNR Lake Michigan Fishing Report provide the clearest available benchmark for how the Lake Michigan salmon population has been trending. Over 210,000 coho and 160,000 Chinook harvested in a single season — the latter the best since 2012 — signals a lake in strong productive shape heading into 2026. The report attributes both benchmarks directly to healthy alewife cohorts in recent years, and alewife abundance typically operates on a multi-year cycle that doesn't reset in a single off-season.

For the Chicago portion of Lake Michigan specifically, no comparative current-season data from local charter captains or tackle shops came through our available feeds for this update. That limits a direct week-over-week or year-over-year comparison for the immediate area. Anglers with prior seasons on the Chicago lakefront know that the early-May coho window is well-established — the species has been a cornerstone of the city's charter fleet and pier fishery for decades, supported by cooperative stocking programs between Illinois and Wisconsin.

IL/IN Sea Grant's confirmation that spring buoy deployment is underway is a useful seasonal marker: it means the infrastructure underpinning real-time Lake Michigan conditions reporting is being activated on schedule, consistent with a normal spring progression. If current conditions feel early or late compared to past seasons, the best comparative tools are the WI DNR's creel surveys and any Illinois DNR spring stocking announcements — neither of which fell within our current data window. Treat the 2024 harvest benchmarks as a positive backdrop rather than a direct current-week conditions read; for same-week comparisons in prior years, check the WI DNR Lake Michigan Fishing Report archive directly.