Every day we analyze satellite sea surface temperature imagery, chlorophyll and bait productivity data, surface current charts, and live NOAA marine forecasts to produce this report. The goal is to give you the clearest possible picture of what’s happening on the water before you book a trip or leave the dock.

Conditions move fast in the Keys. Currents shift, bait schools move, and thermal breaks appear and disappear overnight. A report from two days ago isn’t worth much. We try to update this report daily to make sure you have the most up to date info.

Book a Fishing Charter in Marathon with Captain Hook’s!

How to read this report

Sea surface temperature (SST): Warmer water along the reef corridor (76–80°F) keeps reef fish active and feeding. Cold intrusions from the Gulf side can slow shallow-water species like tarpon early in the morning.
Chlorophyll / bait productivity: High chlorophyll readings along the reef line mean bait is stacked. This often means yellowtail, mangrove snapper, cobia and others are close behind.
Surface currents: Moderate Gulf Stream flow past the 408 Hump and Marathon West Hump creates ideal conditions for mahi, blackfin tuna, and wahoo. Slack current along the reef is better for anchoring and chumming.
Wind and seas: Under 15 knots and seas under 3 feet puts all our trips in play. Anything above that and we focus on protected reef and backcountry options.

Upcoming Fishing Conditions

6/22/2026

Overview

Marathon Fishing Prediction — Monday, June 22, 2026

Overall Fishing Grade: 77/100 (Very Good) — A clean offshore edge and a loaded reef line carry the day; light winds and calm seas open the water up, but a weak neap tide means timing your moving-water windows matters.

CONDITIONS SNAPSHOT (peak hours 6 AM–6 PM EDT)

Sunrise 6:36 AM / Sunset 8:16 PM.
Wind: SE/E 5–10 kt nearshore, light early and building to a moderate easterly breeze offshore by late afternoon. Morning is the calmer offshore window.
Seas: Hawk Channel ~1 ft, smooth to light chop; Straits 1–2 ft, building toward 2 ft late in the day.
Water temp: 88–89°F over the shallows and reef; 84–85°F out along the offshore edge.
Tides (Vaca Cut): Low 12:32 AM (0.2′) · High 7:40 AM (0.7′) · Low 1:46 PM (0.2′) · High 10:13 PM (0.5′). Range about half a foot — a weak neap.
Moon: Waxing gibbous, ~55% lit. Moonrise ~12:56 PM.
Solunar: Major 6:07–8:07 AM and 6:22–8:22 PM; minors 12:26–1:26 AM and 12:48–1:48 PM. The evening major rides into sunset.
Barometer: ~30.04″ and slowly rising — stable and fair, no front in play.

Why this grade

The differentiator today is the offshore edge. The clean blue water of the Stream is holding a defined color change just outside the reef line, roughly 13 miles southeast of Marathon, and the water out there is sitting in the low-to-mid 80s — right in the wheelhouse for dolphin and blackfin. There’s a green plume of nutrient-rich water trailing off to the southwest that’s worth checking on the run out. Moderate current is pressing along that edge, which is exactly what stacks bait and predators against a weedline.

Closer in, the reef line is showing a strong band of green, bait-rich water concentrated right along the structure — that’s a yellowtail and mangrove setup, and the calm seas make for easy anchoring and a clean chum slick. The hold-back is the tide: this is a neap, with only about a half-foot of range, so the moving water is soft. That’s not a closed door, it’s a timing instruction — work the outgoing through the midday low and you’ll get the most honest current the day offers.

The backcountry is the soft spot. The shallows are hot at 88–89°F, the tarpon migration is winding down to resident fish, and there’s cloud cover sitting over the bay. Light wind still gives the permit crowd a sight-fishing chance, but the neap tide and warm water keep the flats off the top of the card.

Zone-by-zone game plan

Reef & Structure (30–90 ft): Anchor up-current and chum the reef line where the green water concentrates. Yellowtail on light fluoro back in the slick; drop heavier for mangroves and muttons tight to structure. Mornings before the breeze fills in are cleanest.
Backcountry & Bridges: Resident tarpon around the bridges and channel edges on the moving water; ease off the hottest, stillest shallows. Permit on the light-wind flats for anyone willing to hunt them.
Offshore (run ~13 NM SE to the edge): Run early before the easterly builds. Work the color break and any weed or debris with a mixed trolling spread; keep tuna gear rigged for blackfin along the same edge. The southwest plume is a secondary look on a slow troll.

Recent local catch signal

Signal is light-to-moderate this run with no fresh own-boat reports in hand, so this leans on regional reports and season. Those point the same direction the water does: dolphin holding offshore around weed and debris with blackfin mixed in, and steady yellowtail and mangrove action on the reef, plus grouper on structure. Charter reports skew offshore by nature, so the absence of flats chatter isn’t evidence the backcountry is dead — just unseen today.

Species forecast

Species	Score	Technique	Location	Notes
Mahi-mahi	84	Troll / pitch baits	Offshore edge, ~13 NM SE	Clean water and a defined break in the low-80s set this up — lean toward working weed and debris early before the easterly builds the surface.
Yellowtail snapper	82	Chum / light fluoro	Reef line, 30–70 ft	The green bait-band sits right on the reef, so a steady slick on the calm morning keeps fish back in the chum where long leaders earn more.
Mangrove snapper	78	Live/cut bait on structure	Reef & patches, 25–60 ft	Summer structure pattern is honest; the soft neap current means fishing tight to the rocks and a quieter approach matters more than usual.
Blackfin tuna	76	Troll / vertical jig	Offshore edge & humps	Same edge as the dolphin with moving water along it — watch for bait showers and keep a jig ready when the troll goes quiet.
Permit	64	Sight-fish crab/jig	Flats & wrecks (release)	Light wind opens up sight-fishing, but the weak tide and warm shallows cap it — the better window is the cleaner morning light.
Mutton snapper	64	Live bait on the drop	Deeper structure, 60–110 ft	Tide and moon timing aren’t ideal for a big mutton push, so favor the moving-water stretch and longer soaks on deeper edges.
Grouper (OPEN!)	62	Live/cut bait, bottom	Reef & wrecks, 60–120 ft	Quality-over-quantity on structure right now — drop heavier and hold bottom through the outgoing for the better shot.
Tarpon	55	Live bait / DOA (release)	Bridges & channels	Migration is thinning to resident fish and the neap doesn’t load the bridges — fish the strongest current you can find on the tide change.
Bonefish	54	Shrimp / fly (release)	Flats	Calm visibility helps the hunt, but hot shallow water keeps fish moving — early and late, off the warmest mid-day flats.
Snook	53	Live bait, structure (release)	Bridges & shorelines	A warm structure bite is there for the dedicated, just not a headline play — work shadow lines on the moving water.
King/Spanish mackerel	53	Flatline / flash	Nearshore reef edge	Possible where bait stacks on the reef edge — a flashy trailer and a wire bite matter if they show.
Wahoo	38	High-speed troll	Offshore edge	Off-season and no moon or current push to key them — an incidental shot at best on the run out.
Sailfish	26	Live bait / troll	Offshore	Summer off-peak; a bonus fish, not a target this time of year.

Best bite windows

Dawn 6:00–8:00 AM — solunar major + sunrise + the calmest offshore window; run the edge early and hit the reef at first light.
Midday outgoing ~10:00 AM–1:46 PM — the day’s best moving water for reef chumming; soft, but it’s the honest current.
Evening 6:20–8:20 PM — solunar major into sunset for the nearshore and backcountry; tide’s near slack, so lean on the solunar push.

Safety & notes

No Small Craft Advisory. Light, fishable conditions with a slight chance of afternoon showers or a thunderstorm — keep an eye to the sky on the offshore run.
Seas build modestly in the Straits late in the day.

Links & deals

Daily conditions: https://captainhooks.com/daily-fishing-conditions-marathon-fl/
Book a charter: https://captainhooks.rezdy.com/catalog/66597/fishing-charters
MFP Reel Deal: Gina and Ryan are working MFP Reel Deal this week. Check with them at the register, they may surprize you!

What to Expect When Fishing in Marathon, FL

Marathon sits at the heart of the Florida Keys, with easy access to the Atlantic reef tract to the south and Florida Bay to the north. That geography gives anglers access to three completely different fisheries within a short run of the dock. Try offshore bluewater, nearshore reef and wreck, and shallow backcountry flats.

Offshore fishing

The Gulf Stream runs close to the Keys year-round, pushing warm, clean bluewater within 15–20 miles of Marathon. Offshore structure like the 408 Hump and Marathon West Hump concentrate baitfish and attract pelagics in numbers that few places on the East Coast can match. Mahi-mahi are the bread-and-butter species spring through summer, with blackfin tuna and wahoo filling the box on the right day.

Reef and wreck fishing

The Florida Keys reef tract is one of the most productive fishing grounds in North America. Yellowtail snapper and mangrove snapper are on the reef virtually every day of the year. Mutton snapper and cobia show up in numbers during spring. Expect action from grouper (when in season), amberjack, cero mackerel, and barracuda.

Backcountry and flats fishing

Florida Bay and the grass flats north of Marathon are some of the best tarpon and bonefish water in the world. Tarpon migrate through the Keys from April through July in serious numbers. Permit, snook, and redfish round out the backcountry offering.

Seasonal fishing guide for Marathon, FL

Winter (Dec–Feb): Yellowtail and mangrove snapper fire up in cooler water. Sailfish peak offshore. Calm weather windows make for excellent bottom fishing days.
Spring (Mar–May): The best all-around season. Mahi arrive in force by March. Cobia move through the reef. Tarpon migration kicks off in April.
Summer (Jun–Aug): Mahi, tuna, and wahoo offshore. Consistent reef fishing. Morning trips are the move before afternoon thunderstorms build.
Fall (Sep–Nov): Kingfish move in. Reef fishing stays strong. Cooler temps and lighter crowds make fall an underrated time to fish the Keys.

Bait, tackle, and trip planning

Our Marathon bait and tackle shop carries fresh, live, and frozen bait along with everything you need for a day on the water. For a fully guided experience, our Marathon fishing charters cover all three fisheries. Also fishing out of Big Pine Key if that puts you closer to the action.

Marathon • Big
Pine Key • Key West

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Charters run daily. Reef, offshore, and flats. Book online or give us a call.

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Fishing Report for Marathon FL