Florida Keys · named fishing ground

The Islamorada Hump

A seamount rising into the current off Islamorada — blackfin tuna, amberjack and bonito stacked on the upwelling.

SST 87°F · charted 400 ft · NOAA-designated EFH here
NOAA ENC + BlueTopo seafloor relief — the same layers as pressing Fish in the app. Toggle layers above; tap the map to pan.
Open on the live nautical chart →

What's biting here — right now

Mahi-Mahi identification illustration
Mahi-Mahi99
In season (Jul)
SST 87°F workable (75–86°F prime)
Charted 400 ft suits this species (131–6560 ft ideal)
Temperature break nearby (1.4°C across ~15 nm)
Better near weedlines and floating debris, not bottom structure if you can find it
Run and gun to weedlines, boards and birds; pitch ballyhoo or jigs.
Sailfish identification illustration
Sailfish99
In season (Jul)
SST 87°F workable (75–86°F prime)
Charted 400 ft suits this species (98–656 ft ideal)
Temperature break nearby (1.4°C across ~15 nm)
In NOAA-designated Essential Fish Habitat
Kite-fish live baits on color changes and showering ballyhoo.
Yellowfin Tuna identification illustration
Yellowfin Tuna68
In season (Jul)
SST 87°F workable (72–84°F prime)
Charted 400 ft suits this species (197–4920 ft ideal)
Temperature break nearby (1.4°C across ~15 nm)
Troll skirted lures on blue-water edges, rips and canyon walls; chunk at night.
Wahoo identification illustration
Wahoo58
In season (Jul)
SST 87°F workable (73–84°F prime)
Charted 400 ft suits this species (197–6560 ft ideal)
Temperature break nearby (1.4°C across ~15 nm)
High-speed troll (12-16 kt) with weighted lures over ledges and color changes.
Blackfin Tuna identification illustration
Blackfin Tuna58
In season (Jul)
SST 87°F workable (72–84°F prime)
Charted 400 ft suits this species (131–984 ft ideal)
Temperature break nearby (1.4°C across ~15 nm)
Better near humps, wrecks and shrimp-boat culling grounds if you can find it
Small jigs or live pilchards over humps at dawn; chum behind shrimpers.
White Marlin identification illustration
White Marlin31
In season (Jul)
SST 87°F outside preference (75–82°F prime)
Charted 400 ft suits this species (328–6560 ft ideal)
Temperature break nearby (1.4°C across ~15 nm)
Troll naked ballyhoo with dredges over 50-100 fathom lumps and edges.
Blue Marlin identification illustration
Blue Marlin25
In season (Jul)
SST 87°F workable (77–86°F prime)
Charted 400 ft marginal for this species (656–9840 ft ideal)
Temperature break nearby (1.4°C across ~15 nm)
In NOAA-designated Essential Fish Habitat
Large trolled lures over canyons, seamounts and the continental shelf edge.
Common Snook identification illustration
Common Snook5
In season (Jul)
SST 87°F in the prime band (73–88°F prime)
Charted 400 ft marginal for this species (2–20 ft ideal)
No charted structure within 250 m — scored cautiously (charts don't mark all hard bottom)
Live bait or swimbaits on mangrove edges, dock lights and pass current seams.
Tarpon identification illustration
Tarpon5
In season (Jul)
SST 87°F in the prime band (75–88°F prime)
Charted 400 ft marginal for this species (3–39 ft ideal)
Live crabs or mullet drifted through passes and along beaches on moving tide.
Permit identification illustration
Permit5
In season (Jul)
SST 87°F in the prime band (75–88°F prime)
Charted 400 ft marginal for this species (2–20 ft ideal)
Better near structure or edges if you can find it
Live crabs sight-cast on flats; over wrecks in summer.
Bonefish identification illustration
Bonefish5
In season (Jul)
SST 87°F in the prime band (75–88°F prime)
Charted 400 ft marginal for this species (1–7 ft ideal)
Shrimp or small crab flies led ahead of tailing fish on incoming flats.
Mangrove Snapper identification illustration
Mangrove Snapper4
In season (Jul)
SST 87°F workable (72–86°F prime)
Charted 400 ft marginal for this species (10–131 ft ideal)
No charted structure within 250 m — scored cautiously (charts don't mark all hard bottom)
Light fluorocarbon and small live baits around any structure; chum heavily.
Live habitat-envelope scoring at this exact cell — SST, charted depth, charted structure and seabed, NOAA-designated habitat. The same engine and cards as tapping the spot in Fish mode.

Water temperature — last 10 weeks

2026-05-13 → 2026-07-22 · 83–87°F

Best months here

J
F
M
A
M
J
J
A
S
O
N
D
Species in season by month for Florida Keys (from the knowledge base). In season now: Mahi-Mahi, Wahoo, Swordfish, Blue Marlin, Red Drum (Redfish), Common Snook, Tarpon, Greater Amberjack, Red Grouper, Mangrove Snapper.
Other grounds in Florida Keys
Marathon (West) Hump
Blackfin Tuna · Sailfish · Mahi-Mahi
Key West / The Wall
Sailfish · Mahi-Mahi · Blackfin Tuna
Dry Tortugas
Mangrove Snapper · Red Grouper · Permit
Reuse welcome with attribution. Weekly regional report: Florida Keys · Feed: RSS · all US grounds: /fishing.