Northern Michigan Smallmouth Bass Fishing Report

Late August / Looking Ahead to September on Grand Traverse Bay

Smallmouth bass fishing in Northern Michigan is moving through the late-summer pattern, and Grand Traverse Bay continues to offer some of the best smallmouth opportunities of the season. Water temperatures are still warm, the fish are largely past the scattered post-spawn and early-summer transition, and many of the better groups of smallmouth are now relating to deeper structure, bait, and bottom composition.

Both Grand Traverse Bay and several inland lakes in the area are producing fish, but the most consistent bite has been coming from deeper water. Smallmouth are using rock points, boulder fields, sand-to-gravel transitions, offshore breaks, and areas with quick access to depth. There are still windows where fish slide shallower, especially during low light, wind, cloud cover, or active feeding periods, but the dependable pattern has been focused around deeper structure.

As we move toward September, this is one of the most exciting times of year to target smallmouth on Grand Traverse Bay. Fish begin to feed more aggressively as late-summer conditions slowly transition toward fall, and quality bass often group up around bait and structure. September can be an excellent month for both numbers and size, especially when conditions line up with wind, stable weather, and active bait movement.

Current Smallmouth Fishing on Grand Traverse Bay

Grand Traverse Bay is currently in a strong late-summer smallmouth pattern. Many fish are holding on deeper rock, breaks, offshore structure, and clean edges where gobies, crayfish, and baitfish are available. Electronics have been very important for locating fish, bait, and the best pieces of structure. Covering water until you find the right group has been key, but once fish are located, it is common to find multiple quality smallmouth using the same area.

Depths can vary depending on wind, light, and bait movement, but the better fish have generally been more consistent off the bank and around deeper structure. Some bass will still move up onto shallower flats, rock edges, and feeding areas early and late in the day, or when wind creates better conditions in the clear water. However, during calm and sunny periods, deeper finesse presentations have been the most reliable.

Drop shot fishing continues to be one of the most productive techniques on the bay. With many smallmouth holding tight to bottom, a drop shot allows anglers to stay in the strike zone and present baits naturally. Goby-style plastics, small minnow profiles, and natural-colored finesse baits have all been effective. A Z-Man 3.5″ in Shiner,  the Great Lakes Finesse Flat Cat has been money too. 

Long casts, light line, and clean presentations remain important in the clear water of Grand Traverse Bay. On calm days, fish can be wary, so downsizing line and slowing down can make a big difference. When the wind picks up, the bite often improves as the broken surface helps fish feed more confidently.

Fly Fishing Opportunities

Fly anglers can still find good opportunities for smallmouth on Grand Traverse Bay, but the fishing has become more structure-oriented as fish hold deeper. Crayfish patterns, goby imitations, and baitfish-style streamers are the best options right now. Presentations that get down near bottom are important, especially around deeper rock points, breaks, and boulder fields.

Intermediate and sinking lines are helpful depending on the depth and wind conditions. A slow strip, pause, or subtle jigging retrieve has been more effective than fast retrieves when fish are not actively chasing. Windy days can create better fly fishing windows by pushing bait and making fish less cautious in the clear water.

As September approaches, fly fishing can improve when smallmouth begin feeding more aggressively. Baitfish-style streamers, crayfish patterns, and goby flies can all be effective as fish start to put on weight before fall.

Looking Ahead to September Smallmouth Fishing

September is one of the best months of the year to fish Grand Traverse Bay for smallmouth bass. The late-summer pattern often remains strong, but fish begin to show signs of fall behavior as daylight shortens and water temperatures slowly cool. Smallmouth often group up more consistently around bait, rock, and offshore structure, creating opportunities for excellent fishing.

The first part of September usually continues to fish much like late August, with drop shots, tubes, Ned rigs, hair jigs, and swimbaits producing around deeper structure. As the month progresses, fish may become more aggressive and willing to chase, especially during wind, cloud cover, or pre-front conditions.

Anglers planning a September trip to Grand Traverse Bay should be prepared to fish both finesse and moving presentations. Some days require slow, precise bottom contact, while others allow for covering water with swimbaits, streamers, and reaction-style baits. The key is staying mobile, watching conditions, and adjusting to the depth and activity level of the fish.

New Summer Hats

Stay cool and covered this summer with our new Mangled Fly Richardson Performance hats. Lightweight, breathable, and built with Stay-Dri comfort, these caps handle hot days on the water or around town. Available in clean light blue and sleek grey, they feature sharp embroidery and an easy everyday fit style.  Perfect hat for fishing in the summer.

Booking a Smallmouth Trip

Interested in booking a Smallmouth Bass Trip on light tackle or fly gear, drop us a message via email, or text/call us directly 231-631-5701.

Jon Ray