What Deer Island Offers Anglers

Deer Island sits about 12 miles south of Biloxi in Mississippi Sound, a 160-acre barrier island that holds some of the most consistent redfish and spotted seatrout water in the state. The island itself is a wildlife refuge closed to public landing, but the surrounding waters—the shallow flats on the sound side and the deeper channels on the gulf side—are open to fishing year-round. Most anglers fish from boats anchored in the shallows or work the deeper water along the island's eastern and western edges where the bottom drops off.

The appeal of Deer Island is straightforward: the shallow, protected waters around it warm quickly in spring and hold baitfish and crustaceans that draw redfish and trout. The island also creates a current break that concentrates fish, especially during tidal movement. Unlike the open gulf, the sound-side flats stay fishable in moderate wind because the island blocks the worst chop. The water clarity varies with season and recent weather—clearer in fall and winter, murkier after heavy rain or strong wind—but the bottom structure stays consistent enough that fish return to the same feeding zones.

Key Takeaways

  • Deer Island's shallow flats on the sound side hold redfish and spotted seatrout year-round, with spring and fall offering the most predictable action.
  • You must fish from a boat; the island itself is a wildlife refuge and closed to public landing.
  • Tidal movement around the island concentrates fish along the deeper edges and channels, making slack tide and the first hour of incoming tide productive windows.
  • The water around Deer Island is part of Mississippi Sound and requires a valid Mississippi saltwater fishing license, available online or at tackle shops in Biloxi.

Best Times to Fish Deer Island

Spring (March through May) brings the most reliable redfish bite as water temperatures climb and fish move into the shallows to feed. Spotted seatrout also become active during this window, especially around the deeper channels where the island's edges drop off. Early morning and late afternoon are most productive, though overcast days often produce all day.

Fall (September through November) offers a second strong season. Water temperatures cool, baitfish concentrate, and both redfish and trout feed aggressively. The water clarity also improves after summer heat and rain, making sight-fishing possible on calm mornings. Winter (December through February) slows the action but does not shut it down; fish move to the deeper channels and holes, and a warm day can still produce if you fish the right structure.

Summer (June through August) is the slowest season. Heat pushes fish into deeper water and the sound becomes murky from runoff and algae blooms. Early morning trips targeting the deeper edges can work, but most anglers shift focus to other areas during these months.

How to Reach Deer Island and Where to Launch

Deer Island is accessible only by boat. The closest public boat ramps are in Biloxi itself: the Biloxi Small Craft Harbor (near the lighthouse), the Broadwater Marina, and several private marinas along the Back Bay. The run from Biloxi to Deer Island takes 20 to 30 minutes depending on your boat speed and which part of the island you target. The sound-side flats are shallower and require a skiff or shallow-draft boat; the gulf side can handle deeper-draft vessels but is more exposed to wind and swell.

Navigation is straightforward—the island is visible from Biloxi on clear days, and GPS coordinates are widely available. The water depth around the island ranges from 2 to 8 feet on the sound side and 15 to 25 feet on the gulf side. Anchoring is common practice; most anglers set up on the flats and wade or cast from the boat. The island itself has no facilities, no fuel, and no fresh water, so plan accordingly and bring everything you need.

What Fish Live Around Deer Island

Redfish are the primary target. They patrol the shallow flats year-round, feeding on mullet, shrimp, and crabs. Reds around Deer Island run 18 to 28 inches on average, with larger fish (30+ inches) present but less common. They respond to live shrimp, mullet, and artificial lures that mimic baitfish or crustaceans.

Spotted seatrout (speckled trout) are equally abundant, especially in spring and fall. They school in the deeper channels and along the island's edges, feeding on small baitfish. Trout around Deer Island typically run 12 to 18 inches, with occasional fish exceeding 20 inches. They hit small shrimp, live mullet, and topwater lures during low-light periods.

Other species present include Spanish mackerel (spring and fall), king mackerel (summer and fall, mostly on the gulf side), flounder (year-round in deeper holes), and black drum (fall and winter). Tarpon occasionally move through the deeper channels in summer, though they are not a reliable target. Sharks are common but rarely sought by sound-side anglers.

Tackle and Bait Recommendations

For redfish and trout, a 6.5 to 7-foot medium-power spinning rod with 15 to 20-pound braided line works well. Pair it with a 12 to 15-pound fluorocarbon leader to reduce visibility in clear water. Artificial lures—soft plastics rigged on 1/8 to 1/4-ounce jig heads, topwater plugs, and shallow-running crankbaits—are effective and allow you to cover water quickly. Live shrimp and mullet are equally productive, especially when fish are less aggressive.

For larger redfish or king mackerel, step up to a 7 to 8-foot medium-heavy rod with 20 to 30-pound braided line. Heavier jig heads (3/8 to 1/2 ounce) help you reach deeper channels and hold bottom in current. Tackle shops in Biloxi stock everything you need, and staff can advise on what is working that week. Bring extra leaders, hooks, and lures—the shallow flats around Deer Island are snaggy, and you will lose gear.

Tides, Currents, and Water Conditions

Tidal movement around Deer Island is moderate but noticeable. Incoming tide concentrates fish along the deeper edges and channels as water pushes baitfish toward structure. The first two hours of incoming tide are often the most productive. Slack tide (the period between outgoing and incoming) can be slow, as fish disperse across the flats. Outgoing tide pushes fish toward the deeper water on the gulf side, making the channels and drop-offs productive.

Wind direction affects water clarity and fish behavior. South and southeast wind pushes warmer, clearer water from the gulf into the sound, improving visibility and often triggering feeding. North and northeast wind stirs up sediment and can make the water murky, but it also cools the shallows and can concentrate fish in deeper holes. Strong wind (above 15 knots) makes the flats choppy and difficult to fish; the deeper channels on the gulf side are more protected but also more exposed to swell.

Water temperature drives seasonal patterns. In spring, water warming from 60 to 70 degrees triggers the redfish bite. By summer, temperatures exceed 85 degrees and fish move deep or become sluggish. Fall cooling from 75 to 65 degrees reactivates feeding. Winter temperatures below 60 degrees slow metabolism, but fish still feed during warm days or in deeper holes where water stays slightly warmer.

Regulations and Licensing

You need a valid Mississippi saltwater fishing license to fish around Deer Island. Licenses are available online through the Mississippi Department of Marine Resources website, at tackle shops in Biloxi, and at some marinas. A three-day license is cheaper than a full-year license if you are visiting. Licenses are required for anyone 16 and older; children under 16 can fish without one if supervised by a licensed adult.

Redfish have a slot limit: you may keep fish between 18 and 27 inches, with a daily limit of three per person. Spotted seatrout have a 12-inch minimum and a daily limit of 15 per person. King mackerel require a federal permit if you plan to keep them, and there are size and bag limits that vary by season. Check the current regulations before you fish—rules change, and ignorance is not a defense. The Mississippi Department of Marine Resources publishes a free saltwater fishing guide available online and at tackle shops.

Frequently Asked Questions

Can I land on Deer Island itself?

No. Deer Island is a wildlife refuge managed by the U.S. Fish and Wildlife Service and is closed to public landing year-round. You can fish the surrounding waters from a boat, but you cannot step foot on the island.

What is the best month to fish Deer Island?

April and May offer the most consistent redfish action as water warms and fish move into the shallows. September and October are equally strong for both redfish and trout. June through August are the slowest months.

Do I need a guide to fish Deer Island?

No, but a guide can save you time if you are unfamiliar with the area. Guides know the current bite, the best spots for the season, and how to read the water. Several charter services operate out of Biloxi and offer half-day and full-day trips to Deer Island and nearby waters.

What happens if I catch a fish that is too small or too large to keep?

Release it immediately. Slot limits exist to protect breeding populations. Redfish between 18 and 27 inches are legal to keep; anything smaller or larger must go back. The same applies to all other species—know the limits before you fish.

Is Deer Island safe to fish in bad weather?

No. The sound-side flats are protected, but the gulf side is exposed. Strong wind, heavy rain, or lightning make the area dangerous. Check the forecast before you launch and do not hesitate to turn back if conditions worsen.