Islamorada Marine ForecastThe Hump
Updated Fri Sep 4, 2026
Calm Fri-Sat boating; Sunday's showers bring afternoon caution
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Marine Forecast for Islamorada Hump Sep 4–6, 2026
📋 Calm Fri-Sat boating; Sunday's showers bring afternoon caution
Light 6-12 knots southeast winds and calm 1-1.6 feet seas make for a great boating day, with the smoothest conditions from mid-morning through afternoon.
Excellent conditions with light 4-10 knots winds and 1-2 feet seas at 3-second periods. Midday to late afternoon is the calmest window of the whole forecast.
Winds and seas stay light and manageable, but showers bringing about half an inch of rain call for caution - watch visibility and time your trip around the wet weather.
Friday and Saturday offer excellent light-wind, calm-sea conditions ideal for boating, while Sunday sees similar wind and wave conditions but scattered showers totaling about half an inch of rain warrant extra caution. Wave heights stay small (under 2 feet) with short 3-second periods throughout, and winds remain light across all three days.
Recent days at Islamorada Hump
Today’s Water at Islamorada Hump
Sea surface temperature and chlorophyll around Islamorada Hump, imaged fresh every morning. Water at the star is 87.9°F today, and chlorophyll of 0.12 mg/m³ reads as blue-green transition water at the spot.
Imagery: Sep 4, 2026 · rebuilt every morning
These charts show you the breaks. DeepCast reads them. A zone-by-zone AI fishing report for these exact waters — temperature edges, color changes, and structure, analyzed together — for $4.99.
Get the AI fishing reportSST and chlorophyll from the SeaLegs AI DeepCast satellite pipeline. Charts are a planning aid — always check the official marine forecast before making the run.
About the Islamorada Hump
“The Hump” off Islamorada is an underwater seamount that rises sharply into the Gulf Stream — the Florida Keys' signature offshore spot, stacking up blackfin tuna, amberjack, and pelagics where the current piles into the structure. Strong current over a steep bottom means sea state and wind direction make the difference between a comfortable troll and a rough, wet ride.
The outlook below updates every morning from the latest marine model data, with a plain GO / CAUTION / NO-GO call for each day — the same AI rating used in the SeaLegs AI app.
Reading conditions at the Islamorada Hump
The Hump's chop is current-made as much as wind-made. When a fresh breeze opposes the north-flowing Gulf Stream over the seamount, seas stand up steeper than the raw wave height suggests — so treat a wind-against-current day with more respect than the numbers alone would earn. Wind with the current, by contrast, can make a moderate forecast fish comfortably.
The run from Islamorada is short compared to a Northeast canyon trip, which makes the Hump forgiving on timing — but afternoon sea-breeze build is a daily rhythm in the Keys, and the calmest water is usually the early window. Check the day cards above for when each day's window opens and closes.
Islamorada Hump forecast FAQ
How is the sea at Islamorada Hump today?
As of Sep 4, 2026, the SeaLegs AI verdict for Islamorada Hump is GO. A great day for boating with light 6-12 knots southeast winds and small, well-organized 0.3-1.6 feet seas at 2-3-second periods from the east-southeast to southeast. Winds build gently through the morning, peak near midday at 12 knots with gusts to 17 knots, then ease back to near-calm by late afternoon. Visibility is excellent all day, making this one of the best days in the forecast for recreational boating.
Where is the Islamorada Hump?
The Hump is an underwater seamount offshore of Islamorada in the Florida Keys, where the bottom rises steeply into the path of the Gulf Stream. The strong current over the structure concentrates bait and pelagic fish.
How often is this Islamorada forecast updated?
The forecast on this page is rebuilt every morning from the latest marine model data, and the SpotCast card refreshes live in your browser. The date stamp above the outlook shows when it was last generated.
What do GO, CAUTION, and NO-GO mean?
GO means conditions are favorable for most recreational boats. CAUTION means marginal — manageable for experienced crews, but check wind direction against the current before committing. NO-GO means conditions are hazardous for small craft and the trip is best postponed.
Can I get a forecast like this for my own spot?
Yes. In the free SeaLegs AI app you can drop a pin anywhere — a patch reef, a wreck, or your dock — and get the same AI-rated marine forecast, plus fishing reports and trip planning.
What is the water temperature at Islamorada Hump today?
As of Sep 4, 2026, the satellite-derived sea surface temperature at Islamorada Hump is about 87.9°F, with chlorophyll around 0.12 mg/m³ (blue-green transition water). The SST and chlorophyll charts on this page are rebuilt every morning from the SeaLegs AI DeepCast satellite pipeline.
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