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Miami Harbor Entrance, FL Coastal Forecast

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Coastal Waters Forecast for Florida
National Weather Service Miami FL
1036 AM EST Sun Dec 21 2025

Atlantic coastal waters from Jupiter Inlet to Ocean Reef out to
60 nm and Gulf coastal waters from East Cape Sable to Chokoloskee
out 20 nm and Chokoloskee to Bonita Beach out 60 nm...including the
waters of Biscayne Bay and Lake Okeechobee.

Seas are provided as a range of the average height of the highest
1/3 of the waves...along with the occasional height of the average
highest 10 percent of the waves.

AMZ600-GMZ606-220400-
1036 AM EST Sun Dec 21 2025

.Synopsis for Jupiter Inlet to Ocean Reef FL out to 60 nm and for
East Cape Sable to Bonita Beach FL out to 60 nm...

Light northeasterly to easterly surface winds will prevail across
much of the local waters for much of today, with winds veering
northwesterly across the local Gulf waters this afternoon. The
enhancement of surface winds across the Atlantic waters late today
into Monday morning will result in a gradual increase in wave
heights across the Gulf stream waters to 4-6 feet by early Monday.
Higher wave heights (7-9 + feet) and sustained winds of 20 to
25 knots are possible Monday into Tuesday across the Atlantic waters
as winds will continue to enhance and northeasterly swell increases.
Based on this forecast, a Small Craft Advisory will go into effect
for the local Atlantic waters at 4am on Monday and the Biscayne Bay
waters at 7am on Monday. A few showers are possible across the
Atlantic waters at times, today into Monday.

Gulf Stream Hazards: Seas building to 7+ feet by early Monday
morning with sustained winds of 20-25 knots possible by mid Monday
morning.

The approximate location of the west wall of the Gulf Stream as of
Dec 06, 2025.

1 nautical miles north northeast of Fowey Rocks.
1 nautical miles east of Port Everglades.
3 nautical miles east northeast of Lake Worth.
6 nautical miles east northeast of Jupiter Inlet.

This data courtesy of the Naval Oceanographic Office.

$$

AMZ650-670-220400-
Coastal waters from Jupiter Inlet to Deerfield Beach FL out 20 NM-
Waters from Jupiter Inlet to Deerfield Beach FL from 20 to 60 NM-
1036 AM EST Sun Dec 21 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH TUESDAY
MORNING...

.REST OF TODAY...E winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: E
2 ft at 3 seconds and N 2 ft at 6 seconds. Intracoastal waters a
moderate chop. A slight chance of showers.
.TONIGHT...NE winds 10 to 15 kt, increasing to 15 to 20 kt after
midnight. Seas 2 to 3 ft, building to 3 to 5 ft, occasionally to
6 ft after midnight. Wave Detail: N 3 ft at 5 seconds, becoming NE
5 ft at 5 seconds. Intracoastal waters choppy in exposed areas.
.MON...NE winds 20 to 25 kt with gusts up to 30 kt. Seas 5 to 8 ft,
occasionally to 10 ft. Wave Detail: NE 7 ft at 6 seconds.
Intracoastal waters rough in exposed areas.
.MON NIGHT...E winds 25 to 30 kt. Seas 6 to 9 ft, occasionally to
11 ft. Wave Detail: E 8 ft at 7 seconds and NW 2 ft at 7 seconds.
Intracoastal waters very rough in exposed areas.
.TUE...E winds 20 to 25 kt, diminishing to 15 to 20 kt in the
afternoon. Seas 6 to 9 ft, occasionally to 11 ft, subsiding to 5 to
7 ft, occasionally to 9 ft in the afternoon. Wave Detail: E 8 ft at
7 seconds and NW 3 ft at 8 seconds, becoming E 7 ft at 7 seconds and
NW 3 ft at 8 seconds. Intracoastal waters rough in exposed areas.
.TUE NIGHT...E winds 15 to 20 kt, becoming NE 10 to 15 kt after
midnight. Seas 4 to 6 ft, occasionally to 8 ft. Wave Detail: NE 5 ft
at 8 seconds and NE 4 ft at 5 seconds. Intracoastal waters choppy in
exposed areas.
.WED...NE winds 10 to 15 kt, increasing to 15 to 20 kt. Seas 3 to
5 ft, occasionally to 6 ft. Intracoastal waters choppy in exposed
areas.
.THU...NE winds 10 to 15 kt, becoming E 5 to 10 kt after midnight.
Seas 2 to 4 ft, occasionally to 5 ft. Intracoastal waters a moderate
chop.

$$

AMZ651-671-220400-
Coastal waters from Deerfield Beach to Ocean Reef FL out 20 NM-
Waters from Deerfield Beach to Ocean Reef FL from 20 to 60 NM
excluding the territorial waters of Bahamas-
1036 AM EST Sun Dec 21 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM LATE TONIGHT THROUGH TUESDAY
MORNING...

.REST OF TODAY...NE winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail:
E 2 ft at 3 seconds and N 2 ft at 6 seconds. Intracoastal waters a
moderate chop. A slight chance of showers.
.TONIGHT...NE winds 15 to 20 kt with gusts up to 25 kt. Seas 3 to
5 ft, occasionally to 6 ft. Wave Detail: N 4 ft at 6 seconds.
Intracoastal waters choppy in exposed areas.
.MON...NE winds 20 to 25 kt with gusts up to 30 kt. Seas 5 to 8 ft,
occasionally to 10 ft. Wave Detail: NE 8 ft at 6 seconds.
Intracoastal waters rough in exposed areas.
.MON NIGHT...NE winds 25 to 30 kt, becoming E 20 to 25 kt after
midnight. Seas 6 to 9 ft, occasionally to 11 ft. Wave Detail: NE
8 ft at 7 seconds and N 2 ft at 8 seconds. Intracoastal waters very
rough in exposed areas.
.TUE...E winds 20 to 25 kt. Seas 5 to 8 ft, occasionally to 10 ft.
Wave Detail: E 7 ft at 7 seconds and N 3 ft at 8 seconds.
Intracoastal waters rough in exposed areas.
.TUE NIGHT...E winds 15 to 20 kt. Seas 4 to 6 ft, occasionally to
8 ft. Wave Detail: E 4 ft at 5 seconds and N 3 ft at 8 seconds.
Intracoastal waters choppy in exposed areas.
.WED THROUGH THU...NE winds 15 to 20 kt. Seas 3 to 5 ft,
occasionally to 6 ft. Intracoastal waters choppy in exposed areas.
.THU NIGHT...E winds 10 to 15 kt. Seas 2 to 3 ft. Intracoastal
waters a moderate chop.

$$

GMZ656-657-676-220400-
Coastal waters from Chokoloskee to Bonita Beach FL out 20 NM-
Coastal waters from East Cape Sable to Chokoloskee FL out 20 NM-
Waters from Chokoloskee to Bonita Beach FL from 20 to 60 NM-
1036 AM EST Sun Dec 21 2025

.REST OF TODAY...NE winds around 5 kt, becoming N late. Seas less
than 2 ft or less. Wave Detail: NW 1 foot at 5 seconds. Bay and
inland waters light chop.
.TONIGHT...NE winds 10 to 15 kt. Seas less than 2 ft or less, then
around 2 ft after midnight. Wave Detail: NW 1 foot at 5 seconds,
becoming N 2 ft at 3 seconds. Bay and inland waters light chop.
.MON...NE winds 15 to 20 kt, diminishing to 10 to 15 kt in the
afternoon. Seas 2 to 3 ft. Wave Detail: NE 3 ft at 3 seconds. Bay
and inland waters a moderate chop.
.MON NIGHT...E winds 15 to 20 kt. Seas 2 to 3 ft. Wave Detail: E
3 ft at 4 seconds. Bay and inland waters a moderate chop.
.TUE AND TUE NIGHT...NE winds 10 to 15 kt with gusts up to 20 kt.
Seas 2 to 3 ft. Wave Detail: NE 3 ft at 4 seconds. Bay and inland
waters light chop.
.WED...NE winds 10 to 15 kt, diminishing to 5 to 10 kt in the
afternoon, then increasing to 10 to 15 kt. Seas 2 to 3 ft. Wave
Detail: NE 2 ft at 3 seconds. Bay and inland waters light chop.
.THU...NE winds 10 to 15 kt, diminishing to 5 to 10 kt. Seas 1 to
2 ft, then 1 foot or less. Bay and inland waters light chop.

$$

AMZ610-220400-
Lake Okeechobee-
1036 AM EST Sun Dec 21 2025

.REST OF TODAY...NE winds 5 to 10 kt. Lake waters light chop. A
slight chance of showers.
.TONIGHT...NE winds 10 to 15 kt. Lake waters a moderate chop.
.MON...NE winds 10 to 15 kt, increasing to 15 to 20 kt in the
afternoon. Lake waters choppy.
.MON NIGHT...E winds 10 to 15 kt with gusts up to 20 kt. Lake waters
a moderate chop.
.TUE AND TUE NIGHT...NE winds 10 to 15 kt. Lake waters a moderate
chop.
.WED THROUGH THU...NE winds 5 to 10 kt. Lake waters light chop.

$$

AMZ630-220400-
Biscayne Bay-
1036 AM EST Sun Dec 21 2025

...SMALL CRAFT ADVISORY IN EFFECT FROM MONDAY MORNING THROUGH
TUESDAY MORNING...

.REST OF TODAY...NE winds 5 to 10 kt. Light chop. A slight chance of
showers.
.TONIGHT...NE winds 10 to 15 kt. A moderate chop.
.MON...NE winds 15 to 20 kt, increasing to 20 to 25 kt in the
afternoon. Rough.
.MON NIGHT...E winds 20 to 25 kt with gusts up to 30 kt. Rough.
.TUE AND TUE NIGHT...NE winds 15 to 20 kt with gusts up to 25 kt.
Choppy.
.WED THROUGH THU...NE winds 15 to 20 kt. Choppy.

$$



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