887
FZUS52 KKEY 072313
CWFKEY

Coastal Waters Forecast for the Florida Keys
National Weather Service Key West FL
713 PM EDT Fri Aug 7 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.

GMZ005-081115-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
713 PM EDT Fri Aug 7 2026

...Updated to reflect lower rain chances this evening increasing
overnight...

.SYNOPSIS...An Atlantic ridge off the mid Atlantic coast will
retain a ridge across northern Florida and the Gulf coast. This
will hold gentle to moderate easterly breezes on our waters
through the remainder of the week and into early next week. Expect
swings in wind speeds, lulling during the day and peaking
overnight. Periodic cautions cannot be ruled out. Rain and thunder
chances will remain elevated into tonight, but trend down towards
normal over the ensuing days. Higher winds and seas should be
expected near stronger showers and thunderstorm.

The Approximate Shoreward Edge of the Gulf Stream as of
August 7, 2026...

25 NM South of Dry Tortugas Light...on Loggerhead Key.
15 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
19 NM South of Sand Key Light...off Key West.
29 NM South of Looe Key...off Big Pine Key.
16 NM Southeast of Sombrero Key Light...off Marathon.
 4 NM Southeast of Alligator Reef Light...off Islamorada.
 2 NM Southeast of Molasses Reef Light...off Key Largo.
 1 NM Southeast of Carysfort Reef Light...off Ocean Reef.

Gulf Stream Information Courtesy of the National Weather Service in
Key West, using data from RTOFS and NASA SPoRT SST.

$$

GMZ031-081115-
Florida Bay including Barnes Sound, Blackwater Sound, and
Buttonwood Sound-
713 PM EDT Fri Aug 7 2026

.TONIGHT...East to southeast winds near 10 knots, increasing to
near 15 knots. Bay waters a light chop, becoming a moderate chop.
A slight chance of showers and thunderstorms this evening, then a
chance of showers and thunderstorms after midnight.
.SATURDAY...East to southeast winds near 15 knots early,
decreasing to near 10 knots. Bay waters a moderate chop, becoming
a light chop. A chance of showers and thunderstorms.
.SATURDAY NIGHT...East winds near 10 knots, increasing to 10 to 15
knots. Bay waters a light chop, becoming a light to moderate
chop. A chance of showers and thunderstorms.
.SUNDAY...East to southeast winds 10 to 15 knots, decreasing to
near 10 knots. Bay waters a light to moderate chop, becoming a
light chop. A chance of showers and thunderstorms.
.SUNDAY NIGHT...East winds increasing to near 15 knots. Bay
waters becoming a moderate chop. A slight chance of showers and
thunderstorms.
.MONDAY...East to southeast winds 10 to 15 knots. Bay waters a
light to moderate chop. A slight chance of showers and
thunderstorms.
.MONDAY NIGHT...East winds 10 to 15 knots. Bay waters a light to
moderate chop.
.TUESDAY...East winds 10 to 15 knots. Bay waters a light to
moderate chop. A slight chance of showers.
.TUESDAY NIGHT...East winds near 10 knots. Bay waters a light
chop.
.WEDNESDAY...East to southeast winds 5 to 10 knots. Bay waters
smooth to a light chop. A slight chance of showers and
thunderstorms.
.WEDNESDAY NIGHT...East to southeast winds 5 to 10 knots. Bay
waters smooth to a light chop.

$$

GMZ032-035-081115-
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-
713 PM EDT Fri Aug 7 2026

.TONIGHT...East to southeast winds near 10 knots, becoming
southeast 10 to 15 knots. Seas 1 to 2 feet. Nearshore waters a
light chop, becoming a light to moderate chop. A slight chance of
showers and thunderstorms this evening, then a chance of showers
and thunderstorms after midnight.
.SATURDAY...East to southeast winds 10 to 15 knots, decreasing to
near 10 knots. Seas around 1 foot. Nearshore waters a light to
moderate chop, becoming a light chop. A chance of showers and
thunderstorms.
.SATURDAY NIGHT...East winds near 10 knots, increasing to near 15
knots. Seas building to 1 to 2 feet. Nearshore waters a light
chop, becoming 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 chance of showers
and thunderstorms.
.SUNDAY NIGHT...East winds near 15 knots. Seas 1 to 2 feet, except
building to 2 to 3 feet west of the Marquesas Keys. Nearshore
waters a moderate chop. A slight chance of showers and
thunderstorms.
.MONDAY...East to southeast winds 10 to 15 knots. Seas 1 to 2
feet. West of the Marquesas Keys, seas 2 to 3 feet, subsiding to
around 2 feet. Nearshore waters a light to moderate chop. A slight
chance of showers and thunderstorms.
.MONDAY NIGHT...East winds 10 to 15 knots, increasing to near 15
knots. Seas 1 to 2 feet. Nearshore waters a light to moderate
chop, becoming a moderate chop. A slight chance of showers.
.TUESDAY...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.
.TUESDAY NIGHT...East to southeast winds decreasing to near 10
knots. Seas 1 to 2 feet. Nearshore waters becoming a light chop.
.WEDNESDAY...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 and thunderstorms.
.WEDNESDAY NIGHT...East to southeast winds 5 to 10 knots. Seas
1 to 2 feet. Nearshore waters smooth to a light chop.

$$

GMZ042>044-081115-
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-
713 PM EDT Fri Aug 7 2026

.TONIGHT...East to southeast winds near 10 knots, increasing to
10 to 15 knots. Seas building to around 2 feet. Nearshore waters
a light chop, becoming a moderate chop. A slight chance of
showers and thunderstorms this evening, then a chance of showers
and thunderstorms after midnight.
.SATURDAY...East to southeast winds near 15 knots, decreasing to
near 10 knots. Seas 2 to 3 feet, subsiding to 1 to 2 feet.
Nearshore waters a moderate chop, becoming a light chop. A chance
of showers and thunderstorms.
.SATURDAY NIGHT...East winds near 10 knots, increasing to near
15 knots. Seas building to around 2 feet. Nearshore waters a
light chop becoming a moderate chop. A chance of showers and
thunderstorms.
.SUNDAY...East to southeast winds near 15 knots, decreasing to 10
to 15 knots. Seas 2 to 3 feet, subsiding to around 2 feet.
Nearshore waters a moderate chop, becoming a light to moderate
chop. A chance of showers and thunderstorms.
.SUNDAY NIGHT...East winds near 15 knots. Seas 2 to 3 feet.
Nearshore waters a moderate chop. A slight chance of showers and
thunderstorms.
.MONDAY...East to southeast winds 10 to 15 knots. Seas 2 to
3 feet. Nearshore waters a light to moderate chop. A slight
chance of showers and thunderstorms.
.MONDAY NIGHT...East winds near 15 knots. Seas 2 to 3 feet.
Nearshore waters a moderate chop.
.TUESDAY...East winds 10 to 15 knots. Seas 2 to 3 feet. Nearshore
waters a light to moderate chop.
.TUESDAY NIGHT...East winds 10 to 15 knots. Seas around 2 feet.
Nearshore waters a light to moderate chop.
.WEDNESDAY...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.
.WEDNESDAY NIGHT...East to southeast winds 5 to 10 knots. Seas
2 to 3 feet. Nearshore waters smooth to a light chop.

$$

GMZ052>055-072>075-081115-
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-
713 PM EDT Fri Aug 7 2026

.TONIGHT...East to southeast winds near 10 knots, increasing to 10
to 15 knots. Seas building to 2 to 3 feet. Wave Detail: East to
southeast 3 feet at 4 seconds. A slight chance of showers and
thunderstorms this evening, then a chance of showers and
thunderstorms after midnight.
.SATURDAY...East to southeast winds 10 to 15 knots. Seas 2 to 3
feet. Wave Detail: East to southeast 3 feet at 5 seconds. A chance
of showers and thunderstorms.
.SATURDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet.
Wave Detail: East 3 feet at 5 seconds. A chance of showers and
thunderstorms.
.SUNDAY...East winds 10 to 15 knots. Seas 2 to 3 feet. A chance
of showers and thunderstorms.
.SUNDAY NIGHT...East winds near 15 knots, increasing to 15 to 20
knots. Seas 2 to 4 feet, occasionally to 5 feet. A chance of
showers and thunderstorms.
.MONDAY...East winds near 15 knots, decreasing to 10 to 15 knots.
Seas 2 to 4 feet, occasionally to 5 feet, subsiding to 2 to 3 feet.
A slight chance of showers and thunderstorms.
.MONDAY NIGHT...East winds near 15 knots. Seas 2 to 4 feet,
occasionally to 5 feet. A slight chance of showers.
.TUESDAY...East winds 10 to 15 knots. Seas 2 to 4 feet,
occasionally to 5 feet. A slight chance of showers and
thunderstorms.
.TUESDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet. A
slight chance of showers.
.WEDNESDAY...East to southeast winds 10 to 15 knots. Seas 2 to
3 feet. A slight chance of showers.
.WEDNESDAY NIGHT...East winds 10 to 15 knots. Seas 2 to 3 feet.

$$

GMZ033-034-081115-
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-
713 PM EDT Fri Aug 7 2026

.TONIGHT...East winds 5 to 10 knots, becoming southeast 10 to
15 knots. Seas 1 to 2 feet. Wave Detail: Southeast 2 feet at 3
seconds. A slight chance of showers and thunderstorms this
evening, then a chance of showers and thunderstorms after
midnight.
.SATURDAY...Southeast winds near 10 knots, decreasing to 5 to 10
knots. Seas 1 to 2 feet, subsiding to around 1 foot. Wave Detail:
Southeast 2 feet at 4 seconds. A chance of showers and
thunderstorms.
.SATURDAY NIGHT...East to southeast winds 5 to 10 knots,
increasing to 10 to 15 knots. Seas building to around 2 feet. Wave
Detail: East to southeast 2 feet at 4 seconds. A chance of
showers and thunderstorms.
.SUNDAY...East to southeast winds near 10 knots. Seas 1 to
2 feet. A chance of showers and thunderstorms.
.SUNDAY NIGHT...East to southeast winds increasing to near 15
knots. Seas building to 2 to 3 feet. A chance of showers and
thunderstorms.
.MONDAY...East to southeast winds near 15 knots, decreasing to 10
to 15 knots. Seas 2 to 3 feet. A slight chance of showers and
thunderstorms.
.MONDAY NIGHT...East winds 10 to 15 knots. Seas 1 to 3 feet. A
slight chance of showers.
.TUESDAY...East to southeast winds 10 to 15 knots, becoming 5 to
10 knots in the afternoon. Seas 1 to 2 feet. A slight chance of
showers and thunderstorms.
.TUESDAY NIGHT...East to southeast winds increasing to near 10
knots. Seas 1 to 2 feet.
.WEDNESDAY...East to southeast winds 5 to 10 knots. Seas 1 to
2 feet. A slight chance of showers and thunderstorms.
.WEDNESDAY NIGHT...East to southeast winds 5 to 10 knots. Seas
1 to 2 feet. A slight chance of showers.

$$