On This Water
Join

Florida · Miami / Biscayne Bay

Mahi-mahi are the hunt — wait for the next incoming; they will not eat a bad presentation here. Heat is the clock — first light or last light.

North end of the grand-slam stage. Bones and permit on the oceanside flats and ocean banks, baby tarpon and snook in the west-side mangroves. Educated fish, short windows, boat traffic.

  • ⚠ Extreme water temperature. Fish stress quickly — keep them wet, or don't boat them.
  • ⚠ Snook are typically closed to harvest on the SE/Atlantic coast in this window. Verify FWC.
6.4OF 10

Today

high confidence

Morning line

Biscayne 6.4 this morning. 4 mph SE. Clear · 1%. Wind versus the table: +0.3 ft. YOLO day is Monday, August 31. Scores are 1–10, not a bite.

Mail it
-0.20.61.32.02.8LHLHLHLHNOWSun 8 PMMon 8 PMTue 8 PMWed 8 PMThu 8 PM
low slack · 0.64 ftNOAA hourly · ft MLLW

Wind

NOAA

NESW4MPH

From SE · gust 6

Sky

1% rain

Clear

Clear · 1%

A 20% shower chance is not a cancel. A soaker is.

Moon

91% lit

Waxing gibbous

mid range · 91%

Water

NOAA 8723214

Water

90.1°

48°92°

Today’s range 2.0 ft

low slack

0.64 ft MLLW

Wind vs table

Observed − predicted

+0.26 ft

Observed minus predicted. Read the water, not just the printout.

Clock

NOAA 8723214

  • LowTue 1:27 AM · 0.61
  • HighTue 7:36 AM · 2.10
  • LowTue 1:51 PM · 0.29
  • HighTue 8:12 PM · 2.24
  • LowWed 2:14 AM · 0.52

Monthly YOLO day

Monday, August 31 · 9.3

Best remaining dry day this month with a real wind forecast. waning gibbous · mid · tide range ~2.3 ft · wind to 14 mph · Clouds · 45%

Stay or drive · Biscayne vs Key LargoOpen the calendarMorning dispatch

Next two weeks

Pulling the 14-day strip…

Where

No marks match this method on this water.

When

  • Incoming water

    10.0

    Tue 3:00 AM → Tue 9:00 AM

    Moving water in the right part of the day.

  • Outgoing water

    9.1

    Tue 9:00 AM → Tue 4:00 PM

    Water is moving, but the clock is against you — heat or dark.

  • Incoming water

    10.0

    Tue 3:00 PM → Tue 10:00 PM

    Water is moving, but the clock is against you — heat or dark.

  • Outgoing water

    10.0

    Tue 9:00 PM → Wed 4:00 AM

    Moving water in the right part of the day.

  • Incoming water

    10.0

    Wed 3:00 AM → Wed 10:00 AM

    Moving water in the right part of the day.

Launch and beach access

County and state ramps near this water. FKNMS no-take is Keys-only, on the legal list.

  • Matheson Hammock Park

    Miami-Dade Parks

    West-side mangrove and basin launch. Baby tarpon and snook water, not the oceanside slam.

    Official source

  • Crandon Marina

    Miami-Dade Parks

    Key Biscayne. Oceanside banks and Stiltsville from here. Park fee.

    Official source

  • Black Point Marina

    Miami-Dade Parks

    South Biscayne. Featherbed and the Safety Valve are the run.

    Official source

Legal water

NOAA FKNMS management zones — Sanctuary Preservation Areas, Ecological Reserves, Research-Only.

No FKNMS polygon in this box. Mainland Florida, Louisiana, Texas, Mexico, and the Bahamas are not Keys sanctuary closures.

Why — and who

  • — Tide is low slack from NOAA.
  • — Observed water is close to the astronomical prediction — the table is telling the truth today.
  • — Water 90.1°F. Heat is the locator: early, late, deeper.
  • — Clear · 1%. Sky is workable.
  • — Wind 4 mph SE. Troll and jig are on.
  • — Waxing gibbous moon — mid tide range. Sight water often prefers a moderate range and clean water over a huge spring.

Yellowtail snapper

Ocyurus chrysurus

5.9

Thermal window

90.1°

66°90°

In peak season for this water. Water 90°F is the hot edge for this fish.

Florida: typically 12 in total length, inside the snapper aggregate. Verify FWC.

Black grouper

Mycteroperca bonaci

4.1

Thermal window

90.1°

66°90°

Present, not peak. Water 90°F is the hot edge for this fish.

Florida: typically a high minimum and a tight bag. Verify FWC. Monroe and FKNMS still apply.

Mahi-mahi

Coryphaena hippurus

5.9

Thermal window

90.1°

66°92°

Bluewater. Weedlines, humps, and the edge — this is the method. In peak season for this water. Water 90°F is the hot edge for this fish.

Florida: typically 10/person, 60/vessel, 20 in fork. Texas: 3/day in federal waters under HMS/coastal rules — verify NOAA HMS and TPWD. Mexico: verify CONAPESCA. Bahamas: check current bag.

Tuna (blackfin / yellowfin)

Thunnus atlanticus / Thunnus albacares

5.9

Thermal window

90.1°

66°92°

Bluewater. Weedlines, humps, and the edge — this is the method. In peak season for this water. Water 90°F is the hot edge for this fish.

Federal HMS rules. Yellowfin typically 27 in curved fork. Blackfin often more liberal — verify NOAA HMS and FWC/TPWD the morning you leave the inlet.

Blue marlin

Makaira nigricans

5.9

Thermal window

90.1°

68°90°

Bluewater. Weedlines, humps, and the edge — this is the method. In peak season for this water. Water 90°F is the hot edge for this fish.

Federal HMS. Treat as catch-and-release unless a lawful tag says otherwise. Verify NOAA HMS.

White marlin

Kajikia albida

5.9

Thermal window

90.1°

66°88°

Bluewater. Weedlines, humps, and the edge — this is the method. In peak season for this water. Water 90°F is the hot edge for this fish.

Federal HMS. Treat as catch-and-release. Verify NOAA HMS.

Swordfish

Xiphias gladius

4.1

Thermal window

90.1°

60°84°

Bluewater. Weedlines, humps, and the edge — this is the method. Present, not peak. Water 90°F is the hot edge for this fish.

Federal HMS. Typically one per person with a minimum length. Night gear rules matter. Verify NOAA HMS and FWC.

Sailfish

Istiophorus platypterus

2.3

Thermal window

90.1°

66°90°

Bluewater. Weedlines, humps, and the edge — this is the method. Off-season here. Water 90°F is the hot edge for this fish.

Florida: catch-and-release for Atlantic sail except a rare harvest tag. Federal HMS permit in federal waters. Texas/Bahamas: treat as C&R.

Wahoo

Acanthocybium solandri

2.3

Thermal window

90.1°

66°88°

Bluewater. Weedlines, humps, and the edge — this is the method. Off-season here. Water 90°F is the hot edge for this fish.

Florida: typically 2/person, 10/vessel. Verify FWC.

Jack crevalle

Caranx hippos

5.8

Thermal window

90.1°

64°94°

Bycatch and beach noise — not the reason you came. In peak season for this water. Water 90°F is the hot edge for this fish.

Generally unregulated. Still, do not leave a pile.

Great barracuda

Sphyraena barracuda

5.8

Thermal window

90.1°

66°92°

Bycatch and beach noise — not the reason you came. In peak season for this water. Water 90°F is the hot edge for this fish.

Generally unregulated. Ciguatera risk rises with size. Do not keep a big one for the table.

Regs citedFWC saltwater recreational · current FWC regional rules · rolls in 8 days. Snook closures are regional. Boca Grande is not Jupiter. Verify FWC before you keep one.