HomeForecastsFlorida ForecastsKey West, FL - South Side, White Street Pier Coastal Forecast

Key West, FL - South Side, White Street Pier Coastal Forecast

FZUS52 KKEY 212024
CWFKEY

Coastal Waters Forecast for the Florida Keys
National Weather Service Key West FL
424 PM EDT Sat Jun 21 2025

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.

Wave Detail will include details about the period and direction
of origin for the highest energy waves. Long-period swells coming
from a different direction than the wind would be included in the
Wave Detail.

GMZ005-220830-
Synopsis for Keys coastal waters from Ocean Reef to Dry Tortugas
424 PM EDT Sat Jun 21 2025

.SYNOPSIS...High pressure over the eastern seaboard will gradually
build over the next few days. This will result in gentle to
moderate breezes today slowly freshening in response to the
tightening pressure gradient. By Monday and Monday night, breezes
will be fresh to occasionally strong, and Small Craft Should
Exercise Caution headlines may be needed at that time. Thereafter,
breezes will gradually slacken. Multiple pushes of enhanced
moisture will lead to fluctuations in shower activity over the
coming days, but thunderstorm coverage looks like it will remain
isolated.

The Approximate Shoreward Edge of the Gulf Stream as of June 13...

18 NM Southwest of Dry Tortugas Light...on Loggerhead Key.
36 NM South of Cosgrove Shoal Light...off the Marquesas Keys.
33 NM South of Sand Key Light...off Key West.
39 NM South of Looe Key...off Big Pine Key.
25 NM South of Sombrero Key Light...off Marathon.
11 NM Southeast of Alligator Reef Light...off Islamorada.
5 NM Southeast of Molasses Reef Light...off Key Largo.
5 NM East of Carysfort Reef Light...off Ocean Reef.

Gulf Stream Information Courtesy of the National Weather Service in
Key West based on products from NASA SPoRT.

$$

GMZ031-220830-
Florida Bay including Barnes Sound, Blackwater Sound, and
Buttonwood Sound-
424 PM EDT Sat Jun 21 2025

.TONIGHT...East winds near 10 knots, increasing to 10 to 15
knots. Bay waters a light chop, becoming a light to moderate
chop. Scattered showers and isolated thunderstorms.
.SUNDAY...East winds 10 to 15 knots. Bay waters a light to
moderate chop. Scattered showers and isolated thunderstorms.
.SUNDAY NIGHT...East winds 10 to 15 knots. Bay waters a light to
moderate chop. Scattered showers and isolated thunderstorms.
.MONDAY...East winds near 15 knots. Bay waters a moderate chop.
Scattered showers and isolated thunderstorms.
.MONDAY NIGHT...East winds near 15 knots. Bay waters a moderate
chop. Scattered showers and isolated thunderstorms.
.TUESDAY...East winds 10 to 15 knots. Bay waters a light to
moderate chop. Scattered showers and isolated thunderstorms.
.TUESDAY NIGHT THROUGH WEDNESDAY NIGHT...East winds 10 to 15
knots. Bay waters a light to moderate chop. Scattered showers and
isolated thunderstorms.
.THURSDAY...East to southeast winds 10 to 15 knots. Bay waters a
light to moderate chop. Scattered showers and isolated
thunderstorms.
.THURSDAY NIGHT...East to southeast winds 10 to 15 knots. Bay
waters a light to moderate chop. Scattered showers and isolated
thunderstorms.

$$

GMZ032-035-220830-
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-
424 PM EDT Sat Jun 21 2025

.TONIGHT...East winds near 10 knots, increasing to 10 to 15
knots. Seas 1 foot or less, building to around 1 foot. Nearshore
waters a light chop, becoming a light to moderate chop. Scattered
showers and isolated thunderstorms.
.SUNDAY...East winds 10 to 15 knots. Seas around 1 foot.
Nearshore waters a light to moderate chop. Scattered showers and
isolated thunderstorms.
.SUNDAY NIGHT...East winds increasing to near 15 knots. Seas
building to 1 to 2 feet. Nearshore waters becoming a moderate
chop. Scattered showers and isolated thunderstorms.
.MONDAY...East winds near 15 knots. Seas 1 to 2 feet. Nearshore
waters a moderate chop. Scattered showers and isolated
thunderstorms.
.MONDAY NIGHT...East winds near 15 knots, increasing to 15 to 20
knots. Seas 1 to 2 feet, except building to 2 to 3 feet west of
the Marquesas Keys. Nearshore waters a moderate chop, becoming
choppy. Scattered showers and isolated thunderstorms.
.TUESDAY...East winds decreasing to near 15 knots. Seas 1 to 2
feet, except subsiding to around 2 feet west of the Marquesas Keys.
Nearshore waters becoming a moderate chop. Scattered showers and
isolated thunderstorms.
.TUESDAY NIGHT...East winds near 15 knots. Seas 1 to 2 feet.
Nearshore waters a moderate chop. Scattered showers and isolated
thunderstorms.
.WEDNESDAY AND WEDNESDAY NIGHT...East winds 10 to 15 knots. Seas
1 to 2 feet. Nearshore waters a light to moderate chop. Scattered
showers and isolated thunderstorms.
.THURSDAY...East winds 10 to 15 knots. Seas 1 to 2 feet.
Nearshore waters a light to moderate chop. Scattered showers and
isolated thunderstorms.
.THURSDAY NIGHT...East to southeast winds 10 to 15 knots. Seas
1 to 2 feet. Nearshore waters a light to moderate chop. Scattered
showers and isolated thunderstorms.

$$

GMZ042>044-220830-
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-
424 PM EDT Sat Jun 21 2025

.TONIGHT...East winds near 10 knots, increasing to 10 to 15
knots. Seas around 1 foot, building to 1 to 2 feet. Nearshore
waters a light chop, becoming a light to moderate chop. Scattered
showers and isolated thunderstorms.
.SUNDAY...East winds 10 to 15 knots. Seas 1 to 2 feet. Nearshore
waters a light to moderate chop. Scattered showers and isolated
thunderstorms.
.SUNDAY 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. Scattered showers and isolated
thunderstorms.
.MONDAY...East winds near 15 knots, increasing to 15 to 20 knots.
Seas 1 to 2 feet, building to 2 to 3 feet. Nearshore waters a
moderate chop, becoming choppy. Scattered showers and isolated
thunderstorms.
.MONDAY NIGHT...East winds 15 to 20 knots, decreasing to near 15
knots. Seas 2 to 3 feet. Nearshore waters choppy, becoming a
moderate chop. Scattered showers and isolated thunderstorms.
.TUESDAY...East winds near 15 knots. Seas 2 to 3 feet. Nearshore
waters a moderate chop. Scattered showers and isolated
thunderstorms.
.TUESDAY NIGHT...East 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.
Scattered showers and isolated thunderstorms.
.WEDNESDAY AND WEDNESDAY NIGHT...East winds 10 to 15 knots. Seas
around 2 feet. Nearshore waters a light to moderate chop.
Scattered showers and isolated thunderstorms.
.THURSDAY...East winds 10 to 15 knots. Seas 2 to 3 feet.
Nearshore waters a light to moderate chop. Scattered showers and
isolated thunderstorms.
.THURSDAY NIGHT...East to southeast winds 10 to 15 knots. Seas
2 to 3 feet. Nearshore waters a light to moderate chop. Scattered
showers and isolated thunderstorms.

$$

GMZ052>055-072>075-220830-
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-
424 PM EDT Sat Jun 21 2025

.TONIGHT...East winds near 10 knots, increasing to 10 to 15
knots. Seas 1 to 2 feet, building to 2 to 3 feet. Wave Detail:
East 3 feet at 4 seconds. Scattered showers and isolated
thunderstorms.
.SUNDAY...East winds 10 to 15 knots. Seas 2 to 3 feet. Wave
Detail: East 2 feet at 4 seconds. Scattered showers and isolated
thunderstorms.
.SUNDAY NIGHT...East winds increasing to near 15 knots. Seas 2 to
3 feet. Wave Detail: East 3 feet at 4 seconds. Scattered showers
and isolated thunderstorms.
.MONDAY...East winds near 15 knots, increasing to 15 to 20 knots.
Seas 2 to 3 feet, building to 3 to 4 feet, occasionally to 5
feet. Scattered showers and isolated thunderstorms.
.MONDAY NIGHT...East winds 15 to 20 knots. Seas 3 to 5 feet,
occasionally to 6 feet. Scattered showers and isolated
thunderstorms.
.TUESDAY...East winds decreasing to near 15 knots. Seas subsiding
to 3 to 4 feet, occasionally to 5 feet. Scattered showers and
isolated thunderstorms.
.TUESDAY NIGHT...East winds near 15 knots, decreasing to 10 to 15
knots. Seas 3 to 4 feet, occasionally to 5 feet, subsiding to 2 to
4 feet. Scattered showers and isolated thunderstorms.
.WEDNESDAY AND WEDNESDAY NIGHT...East winds 10 to 15 knots. Seas
2 to 4 feet, occasionally to 5 feet. Scattered showers and
isolated thunderstorms.
.THURSDAY...East winds 10 to 15 knots. Seas 2 to 4 feet,
occasionally to 5 feet. Scattered showers and isolated
thunderstorms.
.THURSDAY NIGHT...East to southeast winds 10 to 15 knots. Seas
2 to 4 feet, occasionally to 5 feet. Scattered showers and
isolated thunderstorms.

$$

GMZ033-034-220830-
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-
424 PM EDT Sat Jun 21 2025

.TONIGHT...East winds near 10 knots, increasing to 10 to 15
knots. Seas 1 to 2 feet. Wave Detail: East 2 feet at 3 seconds.
Scattered showers and isolated thunderstorms.
.SUNDAY...East winds 10 to 15 knots. Seas 1 to 2 feet. Wave
Detail: East 1 foot at 3 seconds. Numerous showers and isolated
thunderstorms.
.SUNDAY NIGHT...East winds 10 to 15 knots. Seas 1 to 2 feet. Wave
Detail: East 2 feet at 3 seconds. Scattered showers and isolated
thunderstorms.
.MONDAY...East winds increasing to near 15 knots. Seas building to 2
to 3 feet. Numerous showers and isolated thunderstorms.
.MONDAY NIGHT...East winds near 15 knots. Seas 2 to 3 feet.
Scattered showers and isolated thunderstorms.
.TUESDAY...East winds decreasing to 10 to 15 knots. Seas subsiding
to 2 to 3 feet. Numerous showers and isolated thunderstorms.
.TUESDAY NIGHT...East winds 10 to 15 knots. Seas around 2 feet.
Scattered showers and isolated thunderstorms.
.WEDNESDAY AND WEDNESDAY NIGHT...East winds 10 to 15 knots. Seas
1 to 2 feet. Scattered showers and isolated thunderstorms.
.THURSDAY...East to southeast winds 10 to 15 knots. Seas 1 to 2
feet. Scattered showers and isolated thunderstorms.
.THURSDAY NIGHT...East to southeast winds 10 to 15 knots. Seas
building to 2 to 3 feet. Scattered showers and isolated
thunderstorms.

$$


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