Marine Weather and Tide Forecast for Key West, FL
April 23, 2025 11:19 PM EDT (03:19 UTC)
Change Location
Change Location
 | Sunrise 6:56 AM Sunset 7:54 PM Moonrise 3:05 AM Moonset 2:44 PM |
GMZ044 Expires:202504240845;;346252 Fzus52 Kkey 240236 Cwfkey
coastal waters forecast for the florida keys national weather service key west fl 1036 pm edt Wed apr 23 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.
gmz042>044-240845- 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- 1036 pm edt Wed apr 23 2025
.small craft should exercise caution - .
Overnight - East winds 15 to 20 knots. Seas 2 to 3 feet. NEarshore waters choppy.
Thursday - East winds 15 to 20 knots. Seas building to 2 to 4 feet, occasionally to 5 feet. NEarshore waters choppy. Isolated showers.
Thursday night - East winds near 20 knots. Seas 2 to 4 feet, occasionally to 5 feet. NEarshore waters rough. Isolated showers and Thunderstorms.
Friday - East winds 15 to 20 knots. Seas 2 to 4 feet, occasionally to 5 feet. NEarshore waters choppy. Isolated showers.
Friday night - East winds 15 to 20 knots, decreasing to near 15 knots. Seas 2 to 3 feet. NEarshore waters choppy, becoming a moderate chop. Isolated showers.
Saturday - East winds near 15 knots. Seas 2 to 3 feet. NEarshore waters a moderate chop. Isolated showers.
Saturday night - Northeast to east winds 10 to 15 knots. Seas 2 to 3 feet. NEarshore waters a light to moderate chop.
Sunday - Northeast to east winds near 10 knots. Seas 1 to 2 feet. NEarshore waters a light chop.
Sunday night - Northeast to east winds 10 to 15 knots. Seas 1 to 2 feet. NEarshore waters a light to moderate chop.
Monday - East winds 10 to 15 knots. Seas 1 to 2 feet. NEarshore waters a light to moderate chop. Isolated showers.
Monday night - East winds 15 to 20 knots. Seas 2 to 3 feet. NEarshore waters choppy. Isolated showers.
coastal waters forecast for the florida keys national weather service key west fl 1036 pm edt Wed apr 23 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.
gmz042>044-240845- 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- 1036 pm edt Wed apr 23 2025
GMZ005 Synopsis For Keys Coastal Waters From Ocean Reef To Dry Tortugas 1036 Pm Edt Wed Apr 23 2025
Synopsis - Breezes are expected to freshen and shift to the northeast to east tonight as high pressure shifts slightly west and subtly strengthens. Breezes modestly slacken one more time for overnight into Thursday morning before another prolonged surge in breezes is anticipated for Thursday afternoon through Friday night. Small craft advisories likely will be required as a result for this time frame. The high weakens over the weekend leading to slackening breezes.
the approximate shoreward edge of the gulf stream as of april 22nd - .
30 nm south of dry tortugas light - .on loggerhead key. 6 nm south of cosgrove shoal light - .off the marquesas keys. 2 nm south of sand key light - .off key west. 4 nm south of looe key - .off big pine key. 5 nm south of sombrero key light - .off marathon. 7 nm southeast of alligator reef light - .off islamorada. 5 nm southeast of molasses reef light - .off key largo. 4 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.
the approximate shoreward edge of the gulf stream as of april 22nd - .
30 nm south of dry tortugas light - .on loggerhead key. 6 nm south of cosgrove shoal light - .off the marquesas keys. 2 nm south of sand key light - .off key west. 4 nm south of looe key - .off big pine key. 5 nm south of sombrero key light - .off marathon. 7 nm southeast of alligator reef light - .off islamorada. 5 nm southeast of molasses reef light - .off key largo. 4 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.
7 Day Forecast for Marine Location Near Key West, FL
NEW! Add second zone forecast
| Sand Key Lighthouse Click for Map Wed -- 12:09 AM EDT 0.00 feet Low Tide Wed -- 04:03 AM EDT Moonrise Wed -- 06:40 AM EDT 1.03 feet High Tide Wed -- 06:58 AM EDT Sunrise Wed -- 12:04 PM EDT 0.32 feet Low Tide Wed -- 03:43 PM EDT Moonset Wed -- 06:23 PM EDT 1.37 feet High Tide Wed -- 07:53 PM EDT Sunset Tide / Current data from XTide NOT FOR NAVIGATION |
Sand Key Lighthouse, Sand Key Channel, Florida, Tide feet
| 12 am |
| 0 |
| 1 am |
| 0.1 |
| 2 am |
| 0.2 |
| 3 am |
| 0.5 |
| 4 am |
| 0.7 |
| 5 am |
| 0.9 |
| 6 am |
| 1 |
| 7 am |
| 1 |
| 8 am |
| 0.9 |
| 9 am |
| 0.8 |
| 10 am |
| 0.6 |
| 11 am |
| 0.4 |
| 12 pm |
| 0.3 |
| 1 pm |
| 0.4 |
| 2 pm |
| 0.6 |
| 3 pm |
| 0.8 |
| 4 pm |
| 1.1 |
| 5 pm |
| 1.2 |
| 6 pm |
| 1.4 |
| 7 pm |
| 1.3 |
| 8 pm |
| 1.2 |
| 9 pm |
| 0.9 |
| 10 pm |
| 0.6 |
| 11 pm |
| 0.3 |
| Boca Grande Channel Click for Map Wed -- 01:08 AM EDT 0.00 knots Slack Wed -- 03:55 AM EDT 1.01 knots Max Flood Wed -- 04:04 AM EDT Moonrise Wed -- 06:59 AM EDT Sunrise Wed -- 07:26 AM EDT -0.00 knots Slack Wed -- 10:38 AM EDT -1.17 knots Max Ebb Wed -- 01:31 PM EDT 0.00 knots Slack Wed -- 03:43 PM EDT Moonset Wed -- 04:20 PM EDT 1.10 knots Max Flood Wed -- 07:45 PM EDT -0.00 knots Slack Wed -- 07:54 PM EDT Sunset Wed -- 11:03 PM EDT -1.36 knots Max Ebb Tide / Current data from XTide NOT FOR NAVIGATION |
Boca Grande Channel, Florida Current, knots
| 12 am |
| -0.7 |
| 1 am |
| -0.1 |
| 2 am |
| 0.5 |
| 3 am |
| 0.9 |
| 4 am |
| 1 |
| 5 am |
| 0.9 |
| 6 am |
| 0.7 |
| 7 am |
| 0.2 |
| 8 am |
| -0.3 |
| 9 am |
| -0.8 |
| 10 am |
| -1.1 |
| 11 am |
| -1.2 |
| 12 pm |
| -0.9 |
| 1 pm |
| -0.4 |
| 2 pm |
| 0.3 |
| 3 pm |
| 0.9 |
| 4 pm |
| 1.1 |
| 5 pm |
| 1.1 |
| 6 pm |
| 0.8 |
| 7 pm |
| 0.4 |
| 8 pm |
| -0.1 |
| 9 pm |
| -0.8 |
| 10 pm |
| -1.2 |
| 11 pm |
| -1.4 |
FXUS62 KKEY 240236 AFDKEY
Area Forecast Discussion National Weather Service Key West FL 1036 PM EDT Wed Apr 23 2025
New DISCUSSION, MARINE, AVIATION
DISCUSSION
Issued at 1008 PM EDT Wed Apr 23 2025
An Atlantic surface ridge reaches west southwestward across the southeastern United States and Florida. This along with the usual evening surge with this synoptic arrangement has resulted in moderate easterly breezes across the Keys this evening. Cautions remain in effect for most Keys waters. Deep layered ridging remains in control with the western flank of a lower to mid level ridge overhead and under the descending branch of a broad upper trough. This evenings sounding indicated the synoptically driven subsidence inversion has lowered further today and is now based around 915 mb. Precipitable water came in well below normal at .8 inches and surface dew points remain in the mid 60s.
Ridging will continue to dominate the local setup through the overnight period. Easterly breezes may pickup slightly but remain generally moderate and gusty. This healthy flow will minimize overnight cooling and overnight lows will range broadly in the mid 70s. Dew points will linger in the mid 60s and rain chances will be nil.
MARINE
Issued at 1008 PM EDT Wed Apr 23 2025
The western flank of an Atlantic surface ridge will extend west southwestward across the southeast and Florida through the overnight period. This will maintain moderate to fresh easterly breezes on Keys waters. Cautions remain in effect for most Keys waters and no changes made in the evening marine update.
AVIATION
(00Z TAFS)
Issued at 1008 PM EDT Wed Apr 23 2025
VFR conditions will prevail at the island terminals overnight.
Surface winds will remain moderate and gusty out of the east.
KEY WATCHES/WARNINGS/ADVISORIES
FL...None.
GM...None.
Area Forecast Discussion National Weather Service Key West FL 1036 PM EDT Wed Apr 23 2025
New DISCUSSION, MARINE, AVIATION
DISCUSSION
Issued at 1008 PM EDT Wed Apr 23 2025
An Atlantic surface ridge reaches west southwestward across the southeastern United States and Florida. This along with the usual evening surge with this synoptic arrangement has resulted in moderate easterly breezes across the Keys this evening. Cautions remain in effect for most Keys waters. Deep layered ridging remains in control with the western flank of a lower to mid level ridge overhead and under the descending branch of a broad upper trough. This evenings sounding indicated the synoptically driven subsidence inversion has lowered further today and is now based around 915 mb. Precipitable water came in well below normal at .8 inches and surface dew points remain in the mid 60s.
Ridging will continue to dominate the local setup through the overnight period. Easterly breezes may pickup slightly but remain generally moderate and gusty. This healthy flow will minimize overnight cooling and overnight lows will range broadly in the mid 70s. Dew points will linger in the mid 60s and rain chances will be nil.
MARINE
Issued at 1008 PM EDT Wed Apr 23 2025
The western flank of an Atlantic surface ridge will extend west southwestward across the southeast and Florida through the overnight period. This will maintain moderate to fresh easterly breezes on Keys waters. Cautions remain in effect for most Keys waters and no changes made in the evening marine update.
AVIATION
(00Z TAFS)
Issued at 1008 PM EDT Wed Apr 23 2025
VFR conditions will prevail at the island terminals overnight.
Surface winds will remain moderate and gusty out of the east.
KEY WATCHES/WARNINGS/ADVISORIES
FL...None.
GM...None.
| Stations | Dist | Age | Wind | Air | Water | Waves | inHg | DewPt |
| 42095 | 13 mi | 50 min | 78°F | 79°F | 4 ft | |||
| SANF1 - Sand Key, FL | 15 mi | 20 min | E 19G | 77°F | 30.05 | 66°F | ||
| KYWF1 - 8724580 - Key West, FL | 17 mi | 50 min | ESE 11G | 77°F | 79°F | 30.09 |
Wind History for Key West, FL
toggle option: (graph/table)
Link to 1 hour of 5 minute data for KEYW
Terminal Aerodrome Forecast (TAF) for KEYW
Wind History Graph: EYW
(wind in knots)
GEOS Local Image of gulf of mexico
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Key West, FL,
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