What Green Bay offers and when to fish it

Green Bay is the largest freshwater estuary in North America and one of the most productive walleye fisheries in the Great Lakes system. The bay spans roughly 1,100 square miles across northeastern Wisconsin, with depths ranging from shallow nearshore flats to deeper channels that exceed 100 feet. You will find walleye, yellow perch, smallmouth bass, and lake sturgeon here, with walleye and perch supporting the most consistent year-round fishing.

The bay's productivity comes from its shallow average depth and nutrient-rich water flowing from the Fox River and other tributaries. This combination creates ideal conditions for forage fish and the predators that hunt them. Spring and fall are peak seasons for walleye, though summer and winter both hold fish if you know where to look. The bay's size means conditions vary dramatically between the northern arm (closer to Lake Michigan), the central basin, and the southern shallows near the Fox River mouth.

Key Takeaways

  • Walleye fishing peaks in spring (April through May) and fall (September through October), with summer and winter requiring deeper structure and specific timing.
  • Yellow perch are available year-round in the bay's shallower areas, particularly around weed beds and rocky structure in 15 to 30 feet of water.
  • Wisconsin fishing licenses are required; nonresident licenses cost more than resident licenses and are sold by the day, season, or year.
  • Access points include public boat launches at Ashwaubenon, Suamico, and Oconto, plus shore fishing opportunities along the bay's eastern and western shorelines.
  • Walleye have a 15-inch minimum size limit with a daily bag limit of five fish; perch have no minimum size but a 25-fish daily limit.

Walleye fishing by season

Spring walleye (April through May) congregate in shallow water as they move toward spawning grounds. Target depths of 8 to 15 feet along the shoreline, particularly near river mouths and rocky structure. Jigs tipped with live minnows or crawlers work consistently; cast parallel to shore and work the jig slowly along the bottom. Early morning and evening produce better than midday, though overcast days can extend the bite throughout the day.

Summer walleye retreat to deeper water and structure as the bay warms. Fish the deeper channels and holes in the central basin, typically 30 to 50 feet deep. Live bait rigs drifted over structure or vertical jigging in the deepest holes produces fish, though the bite is often slower than spring. Night fishing under lights at shallow structure can be productive if you have access to a boat equipped for it.

Fall (September through October) mirrors spring conditions as walleye move shallow again. The same shallow-water tactics that work in spring apply here, and the bite is often more aggressive than spring. October can be excellent if weather permits; many anglers consider it the best walleye month on the bay.

Winter fishing requires a different approach. Jigging live minnows vertically through the ice in 25 to 40 feet of water produces walleye, though you will need an ice fishing setup and shelter. The bite is typically slower than open-water seasons, and ice thickness and safety vary year to year—check current conditions before heading out.

Yellow perch and other species

Yellow perch are the most accessible fish in Green Bay and available year-round. They school heavily around weed beds, rocky reefs, and structure in 15 to 30 feet of water. Small jigs (1/16 to 1/8 ounce) tipped with minnow heads or small live minnows catch perch consistently. You can also use small spinners or spoons. Perch often bite aggressively and school densely, so when you find one, you usually find many.

Smallmouth bass inhabit rocky structure and deeper weed beds throughout the bay. They are most active in summer and fall, with peak fishing in July and August. Largemouth bass are present but less common than smallmouth. Both species respond to soft plastics, crankbaits, and live crawfish.

Lake sturgeon inhabit Green Bay and are a catch-and-release fishery. They are long-lived, slow-growing fish protected by strict regulations. If you hook one, handle it carefully and return it immediately. Sturgeon fishing requires patience and specialized knowledge; most anglers targeting them focus on spring and fall in deeper channels.

Access points and boat launches

Public boat launches are scattered around the bay's perimeter. The Ashwaubenon launch (near Green Bay city) provides easy access to the central and southern bay. Suamico (north of Green Bay) accesses the northern arm and shallower structure. Oconto (west side) serves anglers targeting the western shoreline and Fox River influence zone. All three have parking and facilities, though they can be crowded on weekends during peak season.

Shore fishing is possible along much of the bay's shoreline, particularly near river mouths and rocky points. The eastern shore near Oconto and the western shore near Suamico offer public access. Wading is limited due to soft bottom and depth, but casting from shore can produce perch and smaller walleye, especially in spring and fall.

If you do not have a boat, charter services operate out of Green Bay and nearby ports. Charters typically target walleye and perch and include tackle and instruction. They are more expensive than public access but eliminate the need to own or rent a boat.

Regulations and licensing

Wisconsin requires a fishing license for anyone 16 and older. Nonresident licenses are available by the day (around $10 to $15), by season (around $40 to $50), or by year (around $60 to $70); exact prices vary by year and license type. Resident licenses cost less. You can purchase licenses online through the Wisconsin Department of Natural Resources website or at bait shops and sporting goods stores near the bay.

Walleye have a 15-inch minimum size limit and a daily bag limit of five fish. Yellow perch have no minimum size but a 25-fish daily limit. Smallmouth bass have a 12-inch minimum and a five-fish daily limit. Lake sturgeon are catch-and-release only. Regulations can change, so check the current Wisconsin fishing guide before you fish.

Green Bay is part of the Great Lakes system, so some additional rules apply. For example, certain areas may have seasonal closures or gear restrictions. The Wisconsin DNR publishes detailed regulations specific to Green Bay; review them before your trip.

What to bring and what to expect

Green Bay's weather is unpredictable, especially in spring and fall. Bring layers, a waterproof jacket, and a hat. The bay can develop rough water quickly, so a personal flotation device is essential and legally required. Sunscreen and polarized sunglasses help you spot structure and fish in shallow water.

Tackle needs are straightforward: jigs (1/8 to 1/2 ounce depending on depth and season), live minnows or crawlers, and a few crankbaits or spinners. A depth finder is valuable for locating structure and fish, especially in deeper water. If you are new to the bay, hiring a guide for your first trip teaches you where fish hold and what tactics work in different seasons.

The bay can be crowded during peak season, particularly on weekends. Weekday fishing is often quieter and can be more productive. Early morning (first two hours after sunrise) and evening (last two hours before sunset) consistently outfish midday, especially in summer.

Frequently Asked Questions

Can I fish Green Bay from shore without a boat?

Yes. Shore fishing works best in spring and fall when walleye and perch move shallow. Fish near river mouths, rocky points, and structure. Perch are more accessible from shore than walleye, and you can catch them year-round in shallow areas. Wading is difficult due to soft bottom and depth, so casting from the bank is your best option.

What is the best time of year to fish Green Bay?

Spring (April and May) and fall (September and October) are peak seasons for walleye. Summer offers consistent perch fishing and smallmouth bass. Winter ice fishing is possible but requires specialized equipment and ice safety knowledge. If you can only visit once, late September through October offers the most reliable fishing across multiple species.

Do I need a guide to fish Green Bay successfully?

No, but a guide is helpful if you are unfamiliar with the bay. Green Bay is large and structure is not always obvious from the surface. A guide teaches you where fish hold in different seasons and what tactics work. If you fish independently, a depth finder and current Wisconsin fishing reports help you locate productive areas.

What size boat do I need?

A 16 to 20-foot boat with a motor is typical for Green Bay fishing. The bay can develop rough water, so a boat with good stability and freeboard is safer than a small open boat. If you do not own a boat, rentals are available in Green Bay, or you can hire a charter that provides the boat and captain.

Are there fish in Green Bay in winter?

Yes. Walleye, perch, and other species remain in the bay year-round. Winter fishing requires ice fishing equipment, an ice auger, and a shelter. Ice thickness varies by year and location; always check current conditions and ice safety before heading out. The bite is typically slower than open-water seasons, but winter can produce large walleye.