What Deer Island Offers and How to Fish It

Deer Island sits in the Mississippi Sound about 12 miles south of Biloxi, a small barrier island that draws anglers for inshore and nearshore fishing. The island itself is a wildlife refuge closed to public landing, but the waters surrounding it—particularly the shallow flats and deeper channels on the sound side—hold redfish, spotted seatrout, flounder, and Spanish mackerel depending on season. Most fishing happens from boats anchored in the nearby shallows or from charter operations based in Biloxi and Gulfport that run trips to the area.

Access is boat-only. There is no public dock or pier on the island. Anglers either launch from public ramps in Biloxi or Gulfport, or book a charter that departs from those ports. The island's refuge status means you cannot land on it, but you can fish the surrounding waters legally year-round within Mississippi's saltwater regulations.

Key Takeaways

  • Deer Island is accessible only by boat from Biloxi or Gulfport, roughly a 30-minute run depending on your launch point and target depth.
  • The shallow flats around the island hold redfish and spotted seatrout in spring and fall, while summer brings Spanish mackerel and flounder to deeper channels.
  • You must follow Mississippi saltwater fishing regulations, including licensing requirements and species-specific bag and size limits that change seasonally.
  • Charter boats operating out of Biloxi offer guided trips to Deer Island and nearby structure, which is often easier than navigating and anchoring on your own.

Seasons and What Fish Are Present

Spring (March through May) is prime time for redfish and spotted seatrout on the shallow flats surrounding the island. Water temperatures climb into the 60s and 70s, and fish move into shallower feeding zones. Sight-casting to tailing redfish is possible on calm mornings, and seatrout respond to live shrimp and small soft plastics. Flounder also begin moving into the area as water warms.

Summer (June through August) shifts the bite deeper. Spanish mackerel arrive and school in the channels and drop-offs around the island, particularly on the sound-facing side. Flounder hold in deeper holes and along structure. Redfish and seatrout are still present but less predictable in the heat. Early morning and late afternoon trips tend to produce better than midday.

Fall (September through November) brings another strong bite as water cools and fish move back into shallower feeding zones. Redfish and seatrout return to the flats, and Spanish mackerel remain active. October and early November are often considered the most consistent months for numbers and size.

Winter (December through February) slows the action. Fish move to deeper channels and holes. Redfish and seatrout are still catchable but require patience and slower presentations. Many charter operations reduce trips or focus on other nearby locations during this period.

Launching and Navigation

The closest public boat ramps are in Biloxi. The Biloxi Small Craft Harbor offers multiple ramps and is the most direct launch for Deer Island trips—the island is roughly 12 miles south, a 30-minute run in calm conditions. Gulfport also has public ramps, though the run is slightly longer. Both facilities charge a launch fee (typically $5 to $10 per day) and offer parking.

Navigation to Deer Island is straightforward in good visibility. The island is marked on GPS and charts, and the surrounding waters are well-traveled. However, the Mississippi Sound can develop chop quickly, and shallow areas require attention to tide and depth. If you are unfamiliar with the area, a chartplotter and updated charts are essential. Fog and poor visibility are common in early morning and during winter, so plan accordingly.

Anchoring is the standard approach. The shallow flats on the north and west sides of the island hold 3 to 6 feet of water and are where most sight-fishing for redfish happens. Deeper channels on the sound side run 8 to 15 feet and hold Spanish mackerel and flounder. Holding ground is generally soft mud, and anchors set reliably.

Regulations and Licensing

Mississippi requires a saltwater fishing license for anyone 16 and older who is not a resident of the state fishing with a resident. Residents can fish without a license but must still follow bag and size limits. Licenses are available online through the Mississippi Department of Marine Resources website, at tackle shops in Biloxi and Gulfport, or at the ramp facilities themselves.

Redfish have a 18-inch minimum size and a 2-fish daily bag limit. Spotted seatrout are 12 inches minimum with a 10-fish bag limit. Flounder are 12 inches minimum with a 10-fish bag limit. Spanish mackerel are 12 inches minimum with a 15-fish bag limit. These limits can change, so check the current regulations before you fish. The Mississippi Department of Marine Resources publishes updates on their website and at ramp facilities.

Closed seasons apply to some species. Redfish have a closed season from December 15 to January 15 in state waters, though this can vary by zone. Always verify current dates before planning a winter trip. Charter captains are familiar with all regulations and will ensure your catch complies.

Tackle and Bait

For redfish and seatrout on the flats, light to medium spinning tackle works well. A 6 to 7-foot rod with 15 to 20-pound braided line and a fluorocarbon leader handles most situations. Live shrimp under a popping cork is a classic setup, as is a 3 to 4-inch soft plastic on a jig head. Topwater plugs can produce explosive strikes on calm mornings.

For Spanish mackerel and deeper structure, step up to medium tackle. A 6.5 to 7-foot rod with 20-pound braided line and a wire or heavy fluorocarbon leader prevents bite-offs. Small spoons, shad-pattern plugs, and live mullet all work. Flounder respond to live baitfish and soft plastics fished on the bottom near structure.

Bait shops in Biloxi and Gulfport stock live shrimp, mullet, and pinfish. If you prefer to bring your own, cast nets are legal in Mississippi, though they require practice. Most anglers simply purchase bait at the ramp or from a shop the morning of the trip.

Charter Boats and Guided Trips

Charter captains operating out of Biloxi and Gulfport regularly run trips to Deer Island and the surrounding sound. A typical half-day trip (4 to 5 hours) costs between $400 and $600 for a boat, while full-day trips run $700 to $1,000 or more. Prices vary by captain, boat size, and season. Most charters include tackle and bait, though some charge extra for premium options.

Booking through a charter is often the best choice if you do not own a boat or are unfamiliar with the area. Captains know the current bite, handle navigation and anchoring, and ensure you stay within regulations. They can also adapt the trip if conditions change—moving to a different location or adjusting tactics based on what is working that day.

Search for charters through the Biloxi Convention and Visitors Bureau website or by calling tackle shops in the area. Read recent reviews and ask about what species are biting and what the captain's experience is with your target fish.

Weather and Safety Considerations

The Mississippi Sound is exposed to the Gulf of Mexico, and conditions can change rapidly. Afternoon thunderstorms are common in summer and early fall. Check the marine forecast before launching, and do not hesitate to head back early if the weather deteriorates. A sudden wind shift can turn a calm morning into a rough afternoon.

Wear a life jacket at all times, especially if you are fishing alone or in a small boat. The sound is busy with commercial traffic and other recreational boats, so stay alert and keep a lookout. Shallow areas can hide sandbars and debris, so run at idle speed in unfamiliar water.

Bring plenty of fresh water, sunscreen, and a hat. The sun reflects off the water and intensifies exposure. Dehydration and heat exhaustion are real risks on a long day on the water. A first aid kit and a working radio or cell phone are also essential.

Frequently Asked Questions

Can I land on Deer Island itself?

No. Deer Island is a wildlife refuge and is closed to public landing. You can fish the surrounding waters, but you cannot go ashore on the island. Violating this restriction can result in fines and confiscation of gear.

What is the best time of year to fish Deer Island?

Spring (March to May) and fall (September to November) are most consistent. Water temperatures are moderate, fish are actively feeding on the flats, and weather is generally more stable than in summer. October is often considered the peak month for both numbers and size.

Do I need a boat to fish Deer Island?

Yes. There is no shore access or pier. You must launch a private boat from Biloxi or Gulfport, or book a charter. If you do not own a boat, a charter is the most practical option.

What size redfish can I keep?

Redfish must be at least 18 inches long, and you can keep a maximum of 2 per day in Mississippi state waters. Verify current regulations before your trip, as rules can change seasonally.

How far is Deer Island from the Biloxi boat ramp?

Approximately 12 miles south. In calm conditions with a typical recreational boat, the run takes 25 to 35 minutes. Rough water or a slower boat may take longer.