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.
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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
6/24/2026
Overview
Marathon Fishing Prediction — Wednesday, June 24, 2026
Overall Fishing Grade: 78/100 (Very Good)
Flat-calm seas and clean blue water off the edge make this an offshore-and-reef day — the only thing holding it back from great is a soft, neap tide.
CONDITIONS SNAPSHOT (peak hours 6 AM–6 PM EDT)
- Sunrise 6:36 AM • Sunset 8:17 PM
- Wind: E–SE 5–10 kt, easing through the day; light all day
- Seas: ~1 ft or less, smooth — both Hawk Channel and the Straits
- Water temp: reef ~87–88°F • backcountry ~90°F • offshore Straits ~85–86°F
- Tides ( Vaca Cut ): Low 2:07 AM (0.4 ft) • High 8:53 AM (0.9 ft) • Low 4:49 PM (0.0 ft) — range ~0.9 ft, neap/soft
- Moon: Waxing gibbous ~76%, moonrise mid-afternoon, building toward the full
- Solunar: low overall activity — best practical windows ride the tide changes
- Barometer: ~30.13–30.14 inHg, steady to slightly rising — favorable
- Sky: mostly sunny to partly cloudy, hot (mid-80s to ~89°F), isolated late-day shower/storm chance
WHY THIS GRADE
The water did the talking today. Past the reef edge, the blue cleans up fast and a defined color change sets up roughly 10–12 NM to the southeast, with the offshore current organized and pushing northeast along the edge. That’s a textbook summer mahi-and-tuna setup, and with the seas laying down to a foot or less, the long run out is easy to justify. Clean water plus a hard color line plus moving offshore current is where the weed lines and bait stack — work the change, the birds, and any floating debris.
The reef tract is carrying a strong band of productive, off-color water right along the line, and water temperature is sitting in the high 80s — bait is there and the snapper want to eat. The catch is the tide: this is a soft, neap range, so the moving water that switches a reef bite on is in short supply. Fish quality over quantity of effort here, and time your drops to the morning high and the long afternoon outgoing.
In the backcountry, the limiter isn’t dirty water — it’s heat. Bank temps are pushing 90°F, which shoves the flats fish off the shallowest, hottest water during the middle of the day. The flat, calm surface is a real gift for sight-fishing, so get your looks in early before the glare builds, and lean on the deeper edges, channels, and bridges through the heat of the afternoon.
ZONE-BY-ZONE GAME PLAN
- Reef & Structure (30–120 ft): Anchor up-current and stretch a chum slick on the morning high; light fluorocarbon earns more bites in the clean, calm water. Yellowtail and mangroves are the bread and butter; drop deeper on the structure for grouper and muttons on the moving-water windows.
- Backcountry & Bridges: A dawn-and-dusk game. Sight-fish the flats edges early while it’s calm and cool; work bridges and channels for resident tarpon and snook around the tide changes. Release fishery — handle and let them go.
- Offshore (run ~10–12 NM SE to the edge): The headline. Troll and run-and-gun the color change and weed lines for mahi; watch the humps and any current seam for blackfin, best at first light. Flat seas make it the easy call.
RECENT LOCAL CATCH SIGNAL
Moderate, and skewed offshore. The strongest recent signal is offshore — mahi in good numbers along the weed lines, with blackfin mixing in — and that lines up with the season and today’s water. Reef reports are steady but lighter in detail; that’s a reflection of what’s posted publicly, not a sign the reef has slowed. Treat the offshore-heavy picture as a function of who’s reporting, not the whole story.
SPECIES FORECAST
| Species | Score | Technique | Location | Notes |
|---|---|---|---|---|
| Mahi-mahi | 84 | Troll / run-and-gun | Offshore edge, ~10–12 NM SE, blue water past the reef | The clean blue past the reef edge holds the weed lines — run the color change and work birds and debris; flat seas make the long look worth it. |
| Yellowtail snapper | 80 | Chum / light leader | Reef line, 30–90 ft | Flat-calm is ideal for a long slick, but the soft tide means the better bite rides the morning high and the late-afternoon outgoing — fish the moving water. |
| Blackfin tuna | 77 | Vertical jigs / live bait | Offshore humps & edge | Run the same edge as the mahi and watch the humps; low-light and any current seam is where the tuna stack, so first light earns the most. |
| Mangrove snapper | 77 | Live bait / structure | Reef & wrecks, 40–80 ft | Summer structure fish are honest, but the neap current keeps them tight — downsize leader and lean on the tide-change windows and after dark. |
| Permit | 66 | Sight-fish / crabs | Wrecks & flats edges | Light wind opens the sight game — get the look in before midday glare, and the wrecks often fish better than the hottest flats. Release. |
| Grouper (OPEN!) | 65 | Live/dead bait | Deeper reef structure, 80–120 ft | Open and fishable on deeper structure — drop on the moving-water windows and expect to work for the quality fish on soft current. |
| Mutton snapper | 64 | Live bait / long leader | Reef edges & humps | Not the prime moon-and-current setup for muttons, so fish the tide changes hard and put a bait on the cleaner edges. |
| Bonefish | 56 | Sight-fish / shrimp | Flats | Calm clarity helps, but 90-degree bank water pushes fish off the hottest flats — work dawn, dusk, and the deeper edges. Release. |
| Tarpon | 55 | Live bait / fly | Bridges & channels | Resident bridge-and-channel pattern with the run fading; the soft tide isn’t ideal, so fish the low-light edges of the moving water. Release. |
| Snook | 52 | Live bait / structure | Bridges & backcountry | Warm structure bite around the bridges at first light and dusk — a release fishery worth a shot on the moving water. Release. |
| King/Spanish mackerel | 52 | Flash / troll | Nearshore & reef edge | Run a flashy bait along the reef edge and over bait pods — a secondary option that rewards covering water. |
| Wahoo | 38 | High-speed troll | Offshore edge | Off-peak and incidental, but a fast bait on the deep edge can still draw a strike on the run out. |
| Sailfish | 26 | Live bait | Offshore | Wrong season — strictly an incidental flag while you work the edge for mahi and tuna. |
BEST BITE WINDOWS (6 AM–6 PM focus)
- First light–9:30 AM — the day’s best all-around window: morning high (~8:53), cooler air, calm glare-free water for reef chum, flats sight-casting, and the early offshore run.
- 2:30–4:49 PM — afternoon outgoing into the low reanimates the reef and backcountry; the moving water is when the soft tide finally works for you.
- Midday offshore — flat seas make the edge run easy; the weed-line bite can pop any time clean water and a debris line stack up.
SAFETY & NOTES
- No Small Craft Advisory and no marine warnings.
- Seas a foot or less — comfortable for all sizes.
- Watch an isolated shower/thunderstorm chance late in the day (around the dinner hour); keep an eye on building afternoon clouds and have an exit plan.
- Sun and heat are the real hazard — water, shade, and protection.
LINKS & DEALS
- Daily conditions page: https://captainhooks.com/daily-fishing-conditions-marathon-fl/
- Book a charter: https://captainhooks.rezdy.com/catalog/66597/fishing-charters
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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
Ready to Fish?
Charters run daily. Reef, offshore, and flats. Book online or give us a call.