188
FZUS52 KKEY 030833
CWFKEY

Coastal Waters Forecast for the Florida Keys
National Weather Service Key West FL
433 AM EDT Sat Oct 3 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.

GMZ005-032045-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
433 AM EDT Sat Oct 3 2026

.SYNOPSIS...
Atlantic high pressure offshore of the southeastern U.S. will
remain in place. This feature will maintain moderate east to
southeasterly breezes initially across the local waters, but a
gradual slackening trend will occur overnight and Saturday. In
addition, relatively drier conditions will settle in for the
weekend. However, an additional push of moisture may come by the
middle of next week. Either way, some showers and thunderstorms
will be possible through the forecast period.

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

39 NM south-southeast of Dry Tortugas Light, on Loggerhead Key
14 NM south-southeast of Cosgrove Shoal Light, off the Marquesas Keys
 8 NM south-southeast of Sand Key Light, off Key West
 2 NM south-southeast of Looe Key, off Big Pine Key
 1 NM south-southeast of Sombrero Key Light, off Marathon
 0 NM south-southeast of Alligator Reef Light, off Islamorada
 2 NM northwest of Molasses Reef Light, off Key Largo
 2 NM northwest of Carysfort Reef Light, off Ocean Reef

Gulf Stream Information Courtesy of the Naval Oceanographic Office.

$$

GMZ031-032045-
Florida Bay including Barnes Sound, Blackwater Sound, and
Buttonwood Sound-
433 AM EDT Sat Oct 3 2026

.TODAY...East to southeast winds 10 to 15 knots. Bay waters a
light to moderate chop. A chance of showers and thunderstorms.
.TONIGHT...East winds 10 to 15 knots. Bay waters a light to
moderate chop. A chance of showers and thunderstorms.
.SUNDAY...East to southeast winds near 10 knots. Bay waters
a light chop. A slight chance of showers and thunderstorms.
.SUNDAY NIGHT...East to southeast winds 5 to 10 knots. Bay waters
smooth to a light chop.
.MONDAY...Southeast winds 5 to 10 knots. Bay waters smooth to a
light chop. A slight chance of showers and thunderstorms.
.MONDAY NIGHT...East to southeast winds near 5 knots. Bay waters
smooth. A slight chance of showers and thunderstorms.
.TUESDAY...South winds near 5 knots. Bay waters smooth. A chance
of showers and thunderstorms.
.TUESDAY NIGHT...South to southwest winds near 5 knots. Bay
waters smooth. A chance of showers and thunderstorms.
.WEDNESDAY...South to southwest winds 5 to 10 knots. Bay waters
smooth to a light chop. A chance of showers and thunderstorms.
.WEDNESDAY NIGHT...Southwest to west winds near 5 knots, becoming
south. Bay waters smooth. A chance of showers and thunderstorms.

$$

GMZ032-035-032045-
Bayside and Gulfside from Craig Key to west end of Seven Mile
Bridge-
Gulf of America from west end of Seven Mile Bridge to Halfmoon
Shoal out to 5 Fathoms-
433 AM EDT Sat Oct 3 2026

.TODAY...East to southeast winds 10 to 15 knots. Seas 1 to 2 feet.
Nearshore waters a light to moderate chop. A chance of showers
and thunderstorms.
.TONIGHT...East winds 10 to 15 knots. Seas 1 to 2 feet. Nearshore
waters a light to moderate chop. A chance of showers and
thunderstorms.
.SUNDAY...East to southeast winds near 10 knots. Seas around 1
foot. Nearshore waters a light chop. A slight chance of showers
and thunderstorms.
.SUNDAY NIGHT...East to southeast winds 5 to 10 knots. Seas
1 foot or less. Nearshore waters smooth to a light chop. A slight
chance of showers.
.MONDAY...Southeast winds 5 to 10 knots. Seas 1 foot or less.
Nearshore waters smooth to a light chop. A slight chance of
showers and thunderstorms.
.MONDAY NIGHT...East to southeast winds near 5 knots. Seas 1 foot
or less. Nearshore waters smooth. A slight chance of showers and
thunderstorms.
.TUESDAY...Southeast to south winds near 5 knots. Seas 1 foot or
less. Nearshore waters smooth. A chance of showers and
thunderstorms.
.TUESDAY NIGHT...Southeast to south winds near 5 knots. Seas
1 foot or less. Nearshore waters smooth. A chance of showers and
thunderstorms.
.WEDNESDAY...South to southwest winds 5 to 10 knots. Seas 1 foot
or less. Nearshore waters smooth to a light chop. A chance of
showers and thunderstorms.
.WEDNESDAY NIGHT...South winds 5 to 10 knots. Seas 1 foot or
less. Nearshore waters smooth to a light chop. A chance of
showers and thunderstorms.

$$

GMZ042>044-032045-
Hawk Channel from Ocean Reef to Craig Key out to the reef-
Hawk Channel from Craig Key to west end of Seven Mile Bridge out
to the reef-
Hawk Channel from west end of Seven Mile Bridge to Halfmoon Shoal
out to the reef-
433 AM EDT Sat Oct 3 2026

.TODAY...East to southeast winds near 15 knots, . Seas around 2
feet. Nearshore waters a light to moderate chop. A chance of
showers and thunderstorms.
.TONIGHT...East to southeast winds near 15 knots. Seas around
2 feet. Nearshore waters a moderate chop. A chance of showers and
thunderstorms.
.SUNDAY...East to southeast winds 10 to 15 knots. Seas 1 to
2 feet. Nearshore waters a light to moderate chop. A slight
chance of showers and thunderstorms.
.SUNDAY NIGHT...East to southeast winds 5 to 10 knots. Seas 1 to
2 feet. Nearshore waters smooth to a light chop. A slight chance
of showers and thunderstorms.
.MONDAY...Southeast winds 5 to 10 knots. Seas 1 to 2 feet.
Nearshore waters smooth to a light chop. A slight chance of
showers and thunderstorms.
.MONDAY NIGHT...Southeast winds 5 to 10 knots. Seas 1 to 2 feet.
Nearshore waters smooth to a light chop. A slight chance of
showers and thunderstorms.
.TUESDAY...Southeast to south winds near 5 knots. Seas 1 to 2 feet.
Nearshore waters smooth. A chance of showers and thunderstorms.
.TUESDAY NIGHT...Southeast to south winds 5 to 10 knots. Seas
1 to 2 feet. Nearshore waters smooth to a light chop. A chance of
showers and thunderstorms.
.WEDNESDAY...South to southwest winds 5 to 10 knots. Seas 1 to 2
feet. Nearshore waters smooth to a light chop. A chance of
showers and thunderstorms.
.WEDNESDAY NIGHT...South winds 5 to 10 knots. Seas 1 to 2 feet.
Nearshore waters smooth to a light chop. A chance of showers and
thunderstorms.

$$

GMZ052>055-072>075-032045-
Straits of Florida from Ocean Reef to Craig Key out 20 NM-
Straits of Florida from Craig Key to west end of Seven Mile
Bridge out 20 NM-
Straits of Florida from west end of Seven Mile Bridge to south of
Halfmoon Shoal out 20 NM-
Straits of Florida from Halfmoon Shoal to 20 NM west of Dry
Tortugas out 20 NM-
Straits of Florida from Ocean Reef to Craig Key 20 to 60 NM out-
Straits of Florida from Craig Key to west end of Seven Mile
Bridge 20 to 60 NM out-
Straits of Florida from west end of Seven Mile Bridge to south of
Halfmoon Shoal 20 to 60 NM out-
Straits of Florida from Halfmoon Shoal to 20 NM west of Dry
Tortugas 20 to 60 NM out-
433 AM EDT Sat Oct 3 2026

.TODAY...East to southeast winds near 15 knots. Seas 2 to 3 feet.
Wave Detail: East to southeast 3 feet at 5 seconds. A chance of
showers and thunderstorms.
.TONIGHT...East to southeast winds near 15 knots. Seas 2 to
3 feet. Wave Detail: East 3 feet at 5 seconds. A chance of
showers and thunderstorms.
.SUNDAY...East to southeast winds 10 to 15 knots. Seas around
2 feet. Wave Detail: East to southeast 2 feet at 5 seconds. A
slight chance of showers and thunderstorms.
.SUNDAY NIGHT...East to southeast winds near 10 knots. Seas
around 2 feet. A chance of thunderstorms with a slight chance of
showers.
.MONDAY...East to southeast winds 5 to 10 knots. Seas 1 to
2 feet. A slight chance of showers and thunderstorms.
.MONDAY NIGHT...East to southeast winds 5 to 10 knots. Seas
1 to 2 feet. A slight chance of showers and thunderstorms.
.TUESDAY...Southeast to south winds 5 to 10 knots. Seas 1 to 2
feet. A slight chance of showers and thunderstorms.
.TUESDAY NIGHT...Southeast to south winds 5 to 10 knots. Seas
1 to 2 feet. A chance of showers and thunderstorms.
.WEDNESDAY...South to southwest winds 5 to 10 knots. Seas 1 to 2
feet. A chance of showers and thunderstorms.
.WEDNESDAY NIGHT...Southeast to south winds 5 to 10 knots. Seas
1 to 2 feet. A chance of showers and thunderstorms.

$$

GMZ033-034-032045-
Gulf of America from East Cape Sable to Chokoloskee 20 to 60 NM
out and beyond 5 fathoms-
Gulf of America including Dry Tortugas and Rebecca Shoal Channel-
433 AM EDT Sat Oct 3 2026

.TODAY...East to southeast winds 10 to 15 knots. Seas 2 to
3 feet. Wave Detail: East to southeast 2 feet at 4 seconds. A
chance of showers and thunderstorms.
.TONIGHT...East to southeast winds near 15 knots. Seas 2 to
3 feet. Wave Detail: East 2 feet at 4 seconds. A chance of
showers and thunderstorms.
.SUNDAY...East to southeast winds 10 to 15 knots. Seas 1 to
2 feet. Wave Detail: East to southeast 2 feet at 4 seconds. A
chance of showers with a slight chance of thunderstorms.
.SUNDAY NIGHT...East to southeast winds near 10 knots. Seas 1 to
2 feet. A slight chance of showers and thunderstorms.
.MONDAY...Southeast winds 5 to 10 knots. Seas 1 to 2 feet. A
slight chance of showers and thunderstorms.
.MONDAY NIGHT...Southeast winds 5 to 10 knots. Seas around 1
foot. A slight chance of showers and thunderstorms.
.TUESDAY...Southeast to south winds near 5 knots. Seas around 1
foot. A chance of showers and thunderstorms.
.TUESDAY NIGHT...Southeast to south winds 5 to 10 knots. Seas
around 1 foot. A chance of showers with a slight chance of
thunderstorms.
.WEDNESDAY...South to southwest winds 5 to 10 knots. Seas around 1
foot. Showers likely with a chance of thunderstorms.
.WEDNESDAY NIGHT...South winds 5 to 10 knots. Seas around 1 foot.
A chance of showers and thunderstorms.

$$