Fall Bonefish in the Florida Keys: A Flats Guide for October

Ryley Monaghan · October 26, 2026 · 5 min read · Florida Keys, FL

Fall is when the Keys flats come back to life. The summer heat breaks, the water on the shallow flats cools down, and bonefish push back up onto the banks to feed. Some of the biggest bonefish of the year show up in October and November, and they tend to be hungrier and less spooky than they were in August.

Here's how to fish it.

Why fall is so good

A few things line up this time of year:

• Cooler water on the flats. In the dead of summer the shallow water gets too hot by midday and the fish slide off to deeper edges. Once it cools, they stay up on the flats longer and feed through more of the tide.
• Bigger fish. The Keys are known for big bonefish, and fall is when a lot of them show up on the oceanside flats.
• The last warm stretch before fronts. Once the cold fronts start rolling through, a hard front can push fish off the flats for a day or two. The stable weather between fronts is the best fishing of the fall.

Where to look

Bonefish spread out across the whole chain, from Key Largo to Key West. You don't need a secret spot. You need the right kind of water on the right tide.

Oceanside flats

The Atlantic side of the Keys has hard sand and turtle grass flats that run out toward the reef. These are classic bonefish water.

• What to look for: a flat with a deeper channel or basin next to it. Fish move up from the deep water as the tide rises and drop back to it as the tide falls.
• Best areas to start: the flats around Islamorada and the Upper Keys have a long reputation for big fish. Marathon and the Lower Keys have miles of flats too.

Bayside and the backcountry

The Gulf and Florida Bay side has softer bottom, more mangrove islands and more protection from the wind.

• What to look for: banks along channel edges, points on mangrove islands and the edges where a flat drops into a basin.
• When to go bayside: on windy days, when the oceanside is rough and hard to see into.

Edges and mud

When the water is cool, cloudy or the tide is too low to cover the flat, bonefish feed along the edges and in slightly deeper water. You'll often find them by the "mud" they kick up — milky clouds in the water where a fish or a school is rooting in the bottom. Cast just ahead of the fresh mud, not into the old cloud.

Reading the tide

Bonefish follow moving water. A slack tide is usually a slow tide.

• Rising tide: the best time on most flats. Fish come up out of the deep water and move onto the flat to feed. Set up on the edge where they push up.
• High tide: fish spread out and can get into very skinny water near the mangroves. They're harder to find but often easy to feed.
• Falling tide: fish drop back off the flat toward the edges and channels. Work the drop-off.
• Low tide: concentrate on the deeper edges and basins next to the flats. Look for mud and tails.

Every flat is different. Note the stage of the tide when a flat comes alive and go back on that stage.

Wind and sun

Seeing the fish is half the game.

• Sun: the best visibility is from mid-morning to mid-afternoon, when the sun is high. Polarized sunglasses are not optional.
• Wind: a little breeze is good — it breaks up the surface and makes fish less spooky. Too much wind makes seeing and casting tough. Put the wind at your back or over your shoulder and the sun behind you when you can.

What to throw

Bonefish eat shrimp, small crabs and little fish off the bottom. Keep it simple.

• Live shrimp: the easiest way to catch your first bonefish. Hook it through the tail, cast well ahead of the fish and let it sit on the bottom. When the fish tips down on it, wait a second, then come tight.
• Skimmer jigs: small, flat-headed jigs in tan, white or pink. Light enough to land soft and not spook the fish. Hop it once or twice when the fish gets close, then let it fall.
• Flies: small shrimp and crab patterns in tan and brown. Weight the fly to match the depth — lighter in skinny water, heavier on the edges.

The most common mistake is casting too close. Lead the fish by several feet and let it find the bait.

Simple tackle for Keys bonefish

A 7 to 7.5-foot light spinning rod, a 2500-size reel with a smooth drag, 8 to 10 lb braid and a fluorocarbon leader will cover it. Set the drag light. A bonefish's first run is the fastest thing you'll feel on the flats, and a tight drag will break you off.

If you fly fish, an 8-weight with a floating line is the standard Keys bonefish setup.

Handle them right

Bonefish are a release fish, and how you let them go matters. Keep the fight short, keep the fish in the water and support it until it swims off strong. Sharks key in on tired bonefish on the flats, so if a shark shows up, move before you release the fish.

Before you go

The Keys flats sit inside the Florida Keys National Marine Sanctuary, and parts of Florida Bay are inside Everglades National Park. Both have their own zones — including idle, no-motor and closed areas — on top of state rules. Check the current FWC rules for bonefish and the sanctuary and park rules for wherever you plan to fish before you go. Pole or idle off the shallow flats and stay off the seagrass with your prop.

Get today's plan

The tide, the wind and the sun decide which flats are fishing on any given day. Pull up the Islamorada fishing report for today's tides and conditions, or check Key Largo, Marathon and Key West if you're fishing farther up or down the chain. Fishing out of the Upper Keys? Grab a bite after at Habanos on the Creek. For the spots, the bite window on today's tide and the plan for your whole day — get the full report in NGN.