Spring salmon action building along Indiana's Lake Michigan shore

What's Biting

What's Next

Without current buoy temperature readings or a weather forecast in hand, day-by-day projections aren't possible — but mid-May follows a reliable seasonal rhythm on the Indiana side of Lake Michigan.

Chinook salmon should be the primary offshore target through the end of the month. Lake Michigan's mid-May thermal structure typically puts cool-water fish in the 35–70 foot range, with the bite concentrated where temperature breaks form. The Michigan Sportsman Forum's early May reports from the eastern Lake Michigan shoreline found kings stacking in the 40–50 foot band, with riggers and divers near bottom outperforming the upper column, and glow frog and flounder pounder patterns leading the scorecard. As surface temperatures warm toward June, fish tend to push slightly deeper to track the thermocline — anglers who aren't marking fish in the 40–55 range should work down toward 65–80 feet before giving up on an area.

Coho salmon typically run shallower than kings and can mix into the nearshore zone throughout May. The WI DNR Lake Michigan Fishing Report documented a record coho return in 2024 (210,000-plus fish), and those well-fed, forage-conditioned survivors represent a strong multi-year class still working through the system. Expect coho in 20–40 feet on smaller spoons and diving plugs. The waning crescent window this week keeps surface light low at first light — an often-productive early-morning slot for shallower coho before the sun climbs and fish drop.

Nearshore smallmouth bass should be entering the pre-spawn staging window along rocky points, riprap, and gravel transitions in 8–20 feet. Fishing the Midwest highlights the drop-shot rig as a reliable finesse approach for transitional bass — slow presentations along bottom structure tend to outperform reaction baits when fish are not yet locked onto beds.

Weekend anglers should pull IL/IN Sea Grant buoy data for wave height before committing to an offshore run. Lake Michigan builds quickly with southwest winds across a long fetch, and exposed Indiana launch ramps can see significant chop by mid-morning. Early departures — before 7 a.m. where conditions permit — typically offer the calmest window in May before afternoon thermal breezes develop.

Context

Mid-May on the Indiana side of Lake Michigan sits squarely in the peak window for spring salmon trolling. Chinook typically stage in nearshore waters through May before dispersing to deeper offshore thermal lanes by June; coho follow a slightly shallower and more erratic path from April through late May. The two-week window around Mother's Day is historically when salmon charter traffic on the southern end of the lake runs at or near its annual high — so timing an outing this week is on-schedule by any standard measure.

The WI DNR Lake Michigan Fishing Report's 2024 harvest data provides important multi-year context. That season produced over 160,000 Chinook — the best single-season haul since 2012 — alongside a record-breaking coho class exceeding 210,000 fish. WI DNR attributed both totals to increased alewife forage survival, meaning the food chain was healthy enough to support exceptional smolt growth and return rates. Strong forage in one year generally underwrites good survival of the following season's stocked fish, making 2026 a reasonable beneficiary of that carry-forward effect.

No buoy temperature data is available to confirm whether the spring thermal progression is running ahead of or behind the historical average this year. IL/IN Sea Grant's three nearshore Lake Michigan sensors are the best real-time reference for tracking where the seasonal curve sits. If surface temperatures are still in the low-to-mid 50s°F — typical for mid-May at this latitude — the salmon bite pattern described in this report should be well in play. If an early warming has pushed surface temps above 60°F ahead of schedule, fish may already be running deeper than the historical norm, and adjusting presentations down toward the 65–80 foot range would be the straightforward correction.