Florida Keys Marine Forecast Interactive Clickable Zone Map

Marine forecast zone from the state of Florida, Florida Keys NOAA office which includes the Gulf of America, Atlantic, coastal waters, bays and offshore. Marine forecast areas included are Key Largo, Tavernier, Islamorada, Layton, Matecumbe Key, Conch Key, Duck Key, Grass Key, Marathon, Big Pine Key, Cudjoe Key, Ramrod Key, Little Torch Key, Summerland Key, Big Coppitt Key, Rockland Key, Sugarloaf Key, Stock Island, Key West and the Dry Tortugas

Florida Keys Marine Zone Map

Click highlighted zone for marine zone link

Marine Weather Warnings Map

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Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas

Expires:202609042045;;880848
FZUS52 KKEY 040832
CWFKEY

Coastal Waters Forecast for the Florida Keys
National Weather Service Key West FL
432 AM EDT Fri Sep 4 2026

Florida Bay, Hawk Channel and Straits of Florida from Ocean Reef
to south of Dry Tortugas, and the extreme southeastern Gulf of
America, including The Florida Keys National Marine Sanctuary

Seas are given as significant wave height, which is the average
height of the highest 1/3 of the waves. Individual waves may be
more than twice the significant wave height.

The Wave Detail section highlights the period and direction of
origin for the highest-energy waves, as well as any long-period
swells moving in a different direction than the wind.


GMZ005-042045-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
432 AM EDT Fri Sep 4 2026

.SYNOPSIS...
The western periphery of a weak North Atlantic high will remain 
in loose control of the Keys coastal waters for the next few 
days. Light to gentle, occasionally moderate, east to southeast 
breezes overnight through morning will become light and variable 
at times during the afternoon and evenings. In addition, the 
overall flow will keep low-level moisture in place across the 
region, with seasonally normal rain and thunder chances.

The Approximate Shoreward Edge of the Gulf Stream as of September 2, 2026...

34 NM south-southwest of Dry Tortugas Light, on Loggerhead Key
34 NM south-southeast of Cosgrove Shoal Light, off the Marquesas Keys
26 NM south-southeast of Sand Key Light, off Key West
21 NM south-southeast of Looe Key, off Big Pine Key
17 NM southeast of Sombrero Key Light, off Marathon
10 NM southeast of Alligator Reef Light, off Islamorada
 6 NM east-southeast of Molasses Reef Light, off Key Largo
 1 NM east-southeast of Carysfort Reef Light, off Ocean Reef

This data courtesy of the Naval Oceanographic Office.

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Coastal marine forecasts from NOAA National Weather Service. Marine forecasts are issued at least four times a day. Advisories, watches and warnings for marine areas are issued as required. Internet forecasts should never be relied upon to obtain the latest forecast and warning data. Use other means such as NOAA Weather Radio to obtain the latest forecasts and warnings.

For more marine forecast information for the Florida Keys zone visit the following office website:

NOAA Florida Keys Marine Office website