Best Time to Fish Islamorada

Months come from each species' own season curve around Islamorada. A strong month is strong for that fish, not a ranking against the others. Time of day, when it is shown, is today's forecast and moves with the tide.

When to fish Islamorada

Each row is shaded against that species' own best month here, so a dark cell means a good month for that fish rather than a comparison between them.

Relative abundance by month for each species around Islamorada
Species	January	February	March	April	May	June	July	August	September	October	November	December
Tarpon
Bonefish
Permit
Dorado
Mutton Snapper
Yellowtail Snapper
Great Barracuda
Black Grouper

Tarpon. Resident tarpon hold in Florida Bay basins, backcountry channels and bridge shadows year-round, so winter numbers stay low but never zero. Abundance builds sharply as water passes about 75°F in March, and the migratory spring run peaks from mid-April through early June, when huge schools travel the oceanside flats and bridges and stage around the May–June palolo worm hatches. Numbers taper through the summer heat, then a modest fall bump occurs from September into October with mullet-run feeding before cold fronts push fish south or deep.
Bonefish. Bonefish are resident year-round on Islamorada flats, so the curve never drops to zero. Abundance rises in spring (April–May) as flats warm and pre-spawn fish school up. It peaks again in fall (September–October), when fish stage for offshore spawning aggregations and cooling water draws them shallow. Winter cold fronts push fish into deeper channels, and peak summer heat drives them off the shallowest flats, creating modest dips.
Permit. Permit are resident on Islamorada's flats and wrecks year-round. Abundance peaks from late March through May, when warming water pushes big schools onto the flats and fish aggregate on offshore wrecks and reefs ahead of the spring–summer spawn. Numbers stay solid through summer and fall, then dip in winter when cold fronts drive fish off the shallows to deeper water.
Dorado. Dorado off Islamorada build in spring as Gulf Stream waters warm and sargassum weedlines form. Abundance peaks from late April through June with the northbound migration, when big schools and bull fish move through. Numbers taper over summer into fall, leaving a thin but persistent winter presence of scattered fish in offshore Gulf Stream waters.
Mutton Snapper. Mutton snapper are resident on Islamorada reefs and patches year-round, so the baseline never drops near zero. Abundance builds through spring as fish move offshore and aggregate on reef edges and wrecks. It peaks from late April through June around the full moons, tied to the spawning aggregations near the Keys such as Western Dry Rocks, then eases through summer and fall to a modest winter low.
Yellowtail Snapper. Yellowtail are resident on Islamorada's reefs year-round, so the curve never drops to zero and stays fairly broad. Abundance builds through spring and peaks from late May to early July as fish aggregate on the outer reef for spawning in warm water. It tapers through late summer and fall, with a mild winter dip when cold fronts push fish deeper and scatter them.
Great Barracuda. Barracuda are resident in Islamorada waters year-round, so they never drop to zero. Numbers peak from December through February, when cold fronts push large fish onto the shallow flats and patch reefs from Florida Bay and offshore, with a small secondary bump in May around bait and spawning aggregations near the reef. Summer and early fall are lower: the biggest fish disperse to deeper, cooler reef edges, so presence dips modestly before building again with the first fall fronts in November.
Black Grouper. Black grouper are resident on Islamorada's reefs and patch reefs year-round, so the curve stays broad. Abundance on the reef tract rises from late fall through winter (peaking Jan–Feb) as cooling water pushes fish shallower and adults aggregate for spawning. It eases through spring and dips slightly in late summer, when fish spread out and move deeper as water temperatures peak.

Time of day on October 31, 2026

These are today's forecast windows, taken at the spot leading each species. They are not a standing schedule.

Permit5 AM to 6 AM · 1 fishable hour
Dorado5 AM to 7 AM · 4 fishable hours
Mutton Snapper5 AM to 7 AM · 6 fishable hours
Yellowtail Snapper1 PM to 4 PM · 5 fishable hours
Great Barracuda1 PM to 4 PM · 5 fishable hours
Black Grouper5 AM to 7 AM · 6 fishable hours

By species

Tarpon

Peaks in April, May and June.

Resident tarpon hold in Florida Bay basins, backcountry channels and bridge shadows year-round, so winter numbers stay low but never zero. Abundance builds sharply as water passes about 75°F in March, and the migratory spring run peaks from mid-April through early June, when huge schools travel the oceanside flats and bridges and stage around the May–June palolo worm hatches. Numbers taper through the summer heat, then a modest fall bump occurs from September into October with mullet-run feeding before cold fronts push fish south or deep.

Bonefish

Excellent in April, May, September and October.

Bonefish are resident year-round on Islamorada flats, so the curve never drops to zero. Abundance rises in spring (April–May) as flats warm and pre-spawn fish school up. It peaks again in fall (September–October), when fish stage for offshore spawning aggregations and cooling water draws them shallow. Winter cold fronts push fish into deeper channels, and peak summer heat drives them off the shallowest flats, creating modest dips.

Permit

Peaks in April.

Permit are resident on Islamorada's flats and wrecks year-round. Abundance peaks from late March through May, when warming water pushes big schools onto the flats and fish aggregate on offshore wrecks and reefs ahead of the spring–summer spawn. Numbers stay solid through summer and fall, then dip in winter when cold fronts drive fish off the shallows to deeper water.

Dorado

Peaks in April, May, June and July.

Dorado off Islamorada build in spring as Gulf Stream waters warm and sargassum weedlines form. Abundance peaks from late April through June with the northbound migration, when big schools and bull fish move through. Numbers taper over summer into fall, leaving a thin but persistent winter presence of scattered fish in offshore Gulf Stream waters.

Mutton Snapper

Peaks in April, May and June.

Mutton snapper are resident on Islamorada reefs and patches year-round, so the baseline never drops near zero. Abundance builds through spring as fish move offshore and aggregate on reef edges and wrecks. It peaks from late April through June around the full moons, tied to the spawning aggregations near the Keys such as Western Dry Rocks, then eases through summer and fall to a modest winter low.

Yellowtail Snapper

Peaks in June.

Yellowtail are resident on Islamorada's reefs year-round, so the curve never drops to zero and stays fairly broad. Abundance builds through spring and peaks from late May to early July as fish aggregate on the outer reef for spawning in warm water. It tapers through late summer and fall, with a mild winter dip when cold fronts push fish deeper and scatter them.

Great Barracuda

Peaks in January.

Barracuda are resident in Islamorada waters year-round, so they never drop to zero. Numbers peak from December through February, when cold fronts push large fish onto the shallow flats and patch reefs from Florida Bay and offshore, with a small secondary bump in May around bait and spawning aggregations near the reef. Summer and early fall are lower: the biggest fish disperse to deeper, cooler reef edges, so presence dips modestly before building again with the first fall fronts in November.

Black Grouper

Excellent in January, February and December.

Black grouper are resident on Islamorada's reefs and patch reefs year-round, so the curve stays broad. Abundance on the reef tract rises from late fall through winter (peaking Jan–Feb) as cooling water pushes fish shallower and adults aggregate for spawning. It eases through spring and dips slightly in late summer, when fish spread out and move deeper as water temperatures peak.

Common questions about Islamorada

›What is the best time of year to fish Islamorada?

It depends on the species. Tarpon peaks in April, May and June. Bonefish is excellent in April, May, September and October. Permit peaks in April. Dorado peaks in April, May, June and July. Mutton Snapper peaks in April, May and June. Yellowtail Snapper peaks in June.

›What time of day is best to fish Islamorada?

On October 31, 2026, the forecast windows are Permit 5 AM to 6 AM, Dorado 5 AM to 7 AM, Mutton Snapper 5 AM to 7 AM, Yellowtail Snapper 1 PM to 4 PM, Great Barracuda 1 PM to 4 PM and Black Grouper 5 AM to 7 AM. These are today's model windows, not a standing schedule.