Salmon and smallmouth in season as Chicago's Lake Michigan enters late May

What's Biting

What's Next

Memorial Day weekend (May 24–25) draws more boats onto Lake Michigan than almost any other stretch of the year, and late May tends to be one of the more productive windows for Chicago-area anglers before summer stratification pushes salmon to harder-to-reach depths.

For Chinook and coho, the window is right. The WI DNR Lake Michigan Fishing Report's 2024 numbers — record coho returns and the best Chinook showing since 2012 — reflect healthy year-classes working through the system. With strong alewife recruitment sustaining stocked fish lake-wide, offshore trollers working the nearshore and mid-lake zones should find willing Chinook staged anywhere from 30 to 80 feet down, with coho often running shallower. Standard spoon and body-bait rigs trolled at 2.0–3.0 mph remain the go-to presentation. Downriggers or diving planers let you dial into the temperature breaks that concentrate both species during this period.

Smallmouth bass are the nearshore story. Late May puts most fish at or just past the peak of spawn, and post-spawn smallies moving off beds onto adjacent rocky structure become increasingly aggressive. Tube baits, drop-shots, and small swimbaits worked along breakwalls, pier faces, and submerged gravel runs in 5–15 feet are the textbook approach for the Chicago lakefront — a presentation Tactical Bassin consistently highlights for Great Lakes smallmouth in clear-water settings. Check Illinois regulations before keeping fish, as smallmouth season timing and size limits can shift.

Yellow perch at piers and breakwalls round out the inshore options. Late May typically has them active over sand-gravel bottom in 10–25 feet, a pattern typical of the southern basin through late spring. Small jigging spoons tipped with minnow heads or waxworms are the classic approach at Chicago-area piers.

Wind remains the dominant variable on open Lake Michigan. A southwest breeze calms the surface and concentrates baitfish on north-facing structure; a northeast wind produces chop and can pull cold water up from depth, sometimes triggering aggressive nearshore feeding. Check a marine forecast before trailering — moderate 15-knot winds build uncomfortable 3–4 foot swells on open water quickly. The first-quarter moon on May 24 sets up productive low-light windows at dawn and dusk across the coming days, worth planning around for both salmon and bass.

Context

Late May on Lake Michigan's southern basin is historically one of the most dynamic stretches of the fishing calendar. The salmon season is in full swing, smallmouth are completing their spawn, and yellow perch move into accessible nearshore depths — a convergence that has made Memorial Day weekend a milestone opener for Chicago-area anglers across generations.

The WI DNR Lake Michigan Fishing Report provides the strongest comparative context available this cycle. The 2024 Chinook harvest exceeded 160,000 fish — the highest since 2012 — and coho topped 210,000, a lake-wide record. The DNR attributed both milestones to strong alewife year-classes, the baitfish that underpins most of the salmonid food web in Lake Michigan. For perspective, the mid-2010s saw alewife populations depressed enough to noticeably dampen stocked-salmon survival; the recent reversal means anglers fishing the southern basin in 2026 are working against a healthier population backdrop than a decade ago.

Management attention on the lake remains active. The WI DNR has proposed new total allowable catch targets for lake whitefish in Lake Michigan and Green Bay for 2026, and held public meetings on smallmouth bass management in northern Lake Michigan and Green Bay — signals that fishery managers are watching population dynamics closely. Ongoing net pen discussions for salmon rearing, per the WI DNR, reflect continued investment in the stocking program Chicago-area trollers depend on.

Illinois-Indiana Sea Grant notes that its three nearshore Lake Michigan buoys are a popular seasonal resource for anglers and mariners checking real-time conditions, though no data was available for this report window. Historically, surface temperatures at the Chicago lakefront in late May can span a wide range — from the upper 40s during northerly winds that draw cold hypolimnion water upward, to the low-to-mid 50s during extended southerly flow. That variability makes real-time buoy checks a worthwhile habit before any open-water trip, particularly during the spring transition period.