Marine Weather and Tide Forecast for Stock Island, FL
 | Sunrise 7:25 AM Sunset 6:59 PM Moonrise 11:51 AM Moonset 10:21 PM |
Marine Forecasts
NOTE: Zones updated 4/16/2026. Some zones changed. Use Edit if needed.
GMZ044 Expires:202610162030;;185218 Fzus52 Kkey 160826 Cwfkey
coastal waters forecast for the florida keys national weather service key west fl 426 am edt Fri oct 16 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.
gmz042>044-162030- 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- 426 am edt Fri oct 16 2026
Today - East to southeast winds 10 to 15 knots, decreasing to 5 to 10 knots in the afternoon. Seas 1 to 2 feet. NEarshore waters a light to moderate chop, becoming smooth to a light chop. A chance of showers with a slight chance of Thunderstorms.
Tonight - East winds 5 to 10 knots. Seas 1 to 2 feet. NEarshore waters smooth to a light chop. A chance of showers with a slight chance of Thunderstorms.
Saturday - North to northeast winds 5 to 10 knots, becoming north near 10 knots. Seas around 1 foot. NEarshore waters smooth to a light chop, becoming a light chop. Showers likely with a chance of Thunderstorms.
Saturday night - North to northeast winds 10 to 15 knots, becoming northeast near 20 knots after midnight. Seas 1 to 2 feet. West of cosgrove shoal light, seas 1 to 2 feet, building to 2 to 4 feet, occasionally to 5 feet. NEarshore waters a light to moderate chop, becoming rough. Showers with a chance of Thunderstorms.
Sunday - Northeast winds 20 to 25 knots. Seas 2 to 4 feet, occasionally to 5 feet, except 4 to 6 feet, occasionally to 8 feet west of cosgrove shoal light. NEarshore waters very rough. Showers with a chance of Thunderstorms.
Sunday night - Northeast winds 20 to 25 knots. Seas 3 to 5 feet, occasionally to 6 feet, except 5 to 7 feet, occasionally to 9 feet west of cosgrove shoal light. NEarshore waters very rough. Showers likely with a chance of Thunderstorms.
Monday - Northeast winds 20 to 25 knots. Seas 3 to 5 feet, occasionally to 6 feet, except 5 to 7 feet, occasionally to 9 feet west of cosgrove shoal light. NEarshore waters very rough. Showers likely with a slight chance of Thunderstorms.
Monday night - Northeast winds 20 to 25 knots. Seas 3 to 5 feet, occasionally to 6 feet, except 5 to 6 feet, occasionally to 8 feet west of cosgrove shoal light. NEarshore waters very rough. A chance of showers and Thunderstorms.
Tuesday - Northeast winds 20 to 25 knots. Seas 3 to 5 feet, occasionally to 6 feet, except 5 to 7 feet, occasionally to 9 feet west of cosgrove shoal light. NEarshore waters very rough. A chance of showers with a slight chance of Thunderstorms.
Tuesday night - Northeast winds 20 to 25 knots. Seas 3 to 5 feet, occasionally to 6 feet. NEarshore waters very rough. A chance of showers with a slight chance of Thunderstorms.
coastal waters forecast for the florida keys national weather service key west fl 426 am edt Fri oct 16 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.
gmz042>044-162030- 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- 426 am edt Fri oct 16 2026
GMZ005 Synopsis For Keys Coastal Waters From Ocean Reef To Dry Tortugas 426 Am Edt Fri Oct 16 2026
Synopsis - High pressure over the southeastern united states and atlantic will shift eastward while a frontal system develops and sweeps southeastward across the country. Breezes are on track to slacken from gentle to moderate to light to gentle, possibly variable, tonight. While breezes slacken and veer northeasterly, shower coverage is expected to increase across the nearshore and offshore waters. The cold front associated with this frontal system is forecast to reach our gulf waters on Saturday night. Breezes are on track to freshen rapidly alongside squally conditions. A small craft advisory will likely be required for part of or all the florida keys waters by late in the weekend. Fresh, occasionally strong, northeasterly breezes are expected to persist through the start of the week.
the approximate shoreward edge of the gulf stream as of october 9, 2026 - .
53 nm south-southeast of dry tortugas light, on loggerhead key 33 nm south-southeast of cosgrove shoal light, off the marquesas keys 24 nm south-southeast of sand key light, off key west 19 nm south-southeast of looe key, off big pine key 13 nm south-southeast of sombrero key light, off marathon 5 nm south-southeast of alligator reef light, off islamorada 2 nm east of molasses reef light, off key largo 2 nm east of carysfort reef light, off ocean reef
gulf stream information courtesy of the naval oceanographic office.
the approximate shoreward edge of the gulf stream as of october 9, 2026 - .
53 nm south-southeast of dry tortugas light, on loggerhead key 33 nm south-southeast of cosgrove shoal light, off the marquesas keys 24 nm south-southeast of sand key light, off key west 19 nm south-southeast of looe key, off big pine key 13 nm south-southeast of sombrero key light, off marathon 5 nm south-southeast of alligator reef light, off islamorada 2 nm east of molasses reef light, off key largo 2 nm east of carysfort reef light, off ocean reef
gulf stream information courtesy of the naval oceanographic office.
7 Day Forecast for Marine Location Near Stock Island, FL
NEW! Add second zone forecast
| Cow Key Channel Click for Map Fri -- 03:09 AM EDT 1.39 feet High Tide Fri -- 07:25 AM EDT Sunrise Fri -- 10:30 AM EDT 0.38 feet Low Tide Fri -- 12:50 PM EDT Moonrise Fri -- 04:47 PM EDT 0.85 feet High Tide Fri -- 06:59 PM EDT Sunset Fri -- 08:48 PM EDT 0.80 feet Low Tide Fri -- 11:21 PM EDT Moonset Tide / Current data from XTide NOT FOR NAVIGATION |
Cow Key Channel, Florida, Tide feet
| 12 am |
| 1.1 |
| 1 am |
| 1.2 |
| 2 am |
| 1.3 |
| 3 am |
| 1.4 |
| 4 am |
| 1.4 |
| 5 am |
| 1.2 |
| 6 am |
| 1.1 |
| 7 am |
| 0.8 |
| 8 am |
| 0.6 |
| 9 am |
| 0.5 |
| 10 am |
| 0.4 |
| 11 am |
| 0.4 |
| 12 pm |
| 0.5 |
| 1 pm |
| 0.6 |
| 2 pm |
| 0.7 |
| 3 pm |
| 0.8 |
| 4 pm |
| 0.8 |
| 5 pm |
| 0.8 |
| 6 pm |
| 0.8 |
| 7 pm |
| 0.8 |
| 8 pm |
| 0.8 |
| 9 pm |
| 0.8 |
| 10 pm |
| 0.8 |
| 11 pm |
| 0.9 |
| Key West Click for Map Fri -- 01:14 AM EDT 2.14 feet High Tide Fri -- 07:25 AM EDT Sunrise Fri -- 08:25 AM EDT 0.54 feet Low Tide Fri -- 12:50 PM EDT Moonrise Fri -- 02:52 PM EDT 1.31 feet High Tide Fri -- 06:43 PM EDT 1.13 feet Low Tide Fri -- 06:59 PM EDT Sunset Fri -- 11:21 PM EDT Moonset Tide / Current data from XTide NOT FOR NAVIGATION |
Key West, Florida, Tide feet
| 12 am |
| 2 |
| 1 am |
| 2.1 |
| 2 am |
| 2.1 |
| 3 am |
| 1.9 |
| 4 am |
| 1.6 |
| 5 am |
| 1.2 |
| 6 am |
| 0.9 |
| 7 am |
| 0.7 |
| 8 am |
| 0.5 |
| 9 am |
| 0.6 |
| 10 am |
| 0.7 |
| 11 am |
| 0.8 |
| 12 pm |
| 1 |
| 1 pm |
| 1.2 |
| 2 pm |
| 1.3 |
| 3 pm |
| 1.3 |
| 4 pm |
| 1.3 |
| 5 pm |
| 1.2 |
| 6 pm |
| 1.1 |
| 7 pm |
| 1.1 |
| 8 pm |
| 1.2 |
| 9 pm |
| 1.3 |
| 10 pm |
| 1.5 |
| 11 pm |
| 1.6 |
FXUS62 KKEY 160911 AFDKEY
Area Forecast Discussion National Weather Service Key West FL 511 AM EDT Fri Oct 16 2026
New DISCUSSION, MARINE, AVIATION
KEY MESSAGES
- Confidence is increasing for an extended period of wet and windy conditions across the Florida Keys this weekend, and possibly into early next week.
- A Small Craft Advisory likely will be required by Sunday for portions or all of the Keys coastal waters.
- Uncertainty remains very high regarding rain chances for next week.
DISCUSSION
Issued at 510 AM EDT Fri Oct 16 2026 Satellite imagery from GOES East indicates the Florida Keys remains under an area of deep layer moisture this morning. GOES East Total Precipitable Water products estimated around 2 inches of PWAT across the Keys and South Florida. Surface dew points in the upper 70s across the Keys highlights how this feels to the average person, it is warm and muggy. Breezes have been gentle to moderate along the reef with occasional fresh gusts. Shower coverage has remained isolated to scattered given the amount of moisture and minimal inhibition. Stray thunderstorms are possible, but the absence of a synoptic scale source of lift means the convective bursts have been short lived. Today, expect muggy conditions to continue across the Keys.
Conditions are on track to change tonight. The broad high pressure system that maintained the gentle to moderate breezes is forecast to move east towards the Atlantic. Meanwhile, a cold front seen developing over the southern Plains will sweep southeast towards the Gulf. The mid latitude system associated with the front will force the high further away from the Keys and weaken it, allowing breezes to slacken to light to gentle across our waters tonight.
While this occurs, the amount of moisture will persist over the Keys. Shower coverage is expected to increase while winds slacken.
The main story for the forecast continues to be the aforementioned cold front. Models still show the frontal boundary nearing the Outer Gulf waters late Saturday night. There is a high likelihood of considerable shower coverage and a chance of thunderstorms tomorrow night, so make sure to keep an eye on the radar.
MARINE
Issued at 510 AM EDT Fri Oct 16 2026 No watches, warnings, or advisories are in effect for the waters surrounding the Florida Keys. Gentle to moderate breezes along the reef this morning are on track to slacken as the Atlantic high weakens. Guidance suggests a strong cold front will advance into the Gulf late tonight and stall near the Keys this weekend.
Breezes are on track to freshen alongside an increase in shower coverage. Exact details about where the front stalls and the duration of peak winds remains uncertain. Small Craft Advisories will likely be required for some or all of our waters once the front nears the Keys.
AVIATION
(06Z TAFS)
Issued at 510 AM EDT Fri Oct 16 2026 VFR conditions will prevail for both EYW and MTH. Sub VFR conditions are possible near isolated showers. Surface winds are on track to decrease late in the day, and VCSH conditions become more likely near the late afternoon. Thunderstorm chances cannot be ruled out while shower coverage increases. MVFR conditions become more likely after sunset, but confidence in timing the showers remains low.
PRELIMINARY POINT TEMPS/POPS
Key West 89 79 87 77 / 30 60 60 90 Marathon 88 80 86 78 / 30 50 50 80
KEY WATCHES/WARNINGS/ADVISORIES
FL...None.
GM...None.
Area Forecast Discussion National Weather Service Key West FL 511 AM EDT Fri Oct 16 2026
New DISCUSSION, MARINE, AVIATION
KEY MESSAGES
- Confidence is increasing for an extended period of wet and windy conditions across the Florida Keys this weekend, and possibly into early next week.
- A Small Craft Advisory likely will be required by Sunday for portions or all of the Keys coastal waters.
- Uncertainty remains very high regarding rain chances for next week.
DISCUSSION
Issued at 510 AM EDT Fri Oct 16 2026 Satellite imagery from GOES East indicates the Florida Keys remains under an area of deep layer moisture this morning. GOES East Total Precipitable Water products estimated around 2 inches of PWAT across the Keys and South Florida. Surface dew points in the upper 70s across the Keys highlights how this feels to the average person, it is warm and muggy. Breezes have been gentle to moderate along the reef with occasional fresh gusts. Shower coverage has remained isolated to scattered given the amount of moisture and minimal inhibition. Stray thunderstorms are possible, but the absence of a synoptic scale source of lift means the convective bursts have been short lived. Today, expect muggy conditions to continue across the Keys.
Conditions are on track to change tonight. The broad high pressure system that maintained the gentle to moderate breezes is forecast to move east towards the Atlantic. Meanwhile, a cold front seen developing over the southern Plains will sweep southeast towards the Gulf. The mid latitude system associated with the front will force the high further away from the Keys and weaken it, allowing breezes to slacken to light to gentle across our waters tonight.
While this occurs, the amount of moisture will persist over the Keys. Shower coverage is expected to increase while winds slacken.
The main story for the forecast continues to be the aforementioned cold front. Models still show the frontal boundary nearing the Outer Gulf waters late Saturday night. There is a high likelihood of considerable shower coverage and a chance of thunderstorms tomorrow night, so make sure to keep an eye on the radar.
MARINE
Issued at 510 AM EDT Fri Oct 16 2026 No watches, warnings, or advisories are in effect for the waters surrounding the Florida Keys. Gentle to moderate breezes along the reef this morning are on track to slacken as the Atlantic high weakens. Guidance suggests a strong cold front will advance into the Gulf late tonight and stall near the Keys this weekend.
Breezes are on track to freshen alongside an increase in shower coverage. Exact details about where the front stalls and the duration of peak winds remains uncertain. Small Craft Advisories will likely be required for some or all of our waters once the front nears the Keys.
AVIATION
(06Z TAFS)
Issued at 510 AM EDT Fri Oct 16 2026 VFR conditions will prevail for both EYW and MTH. Sub VFR conditions are possible near isolated showers. Surface winds are on track to decrease late in the day, and VCSH conditions become more likely near the late afternoon. Thunderstorm chances cannot be ruled out while shower coverage increases. MVFR conditions become more likely after sunset, but confidence in timing the showers remains low.
PRELIMINARY POINT TEMPS/POPS
Key West 89 79 87 77 / 30 60 60 90 Marathon 88 80 86 78 / 30 50 50 80
KEY WATCHES/WARNINGS/ADVISORIES
FL...None.
GM...None.
| Stations | Dist | Age | Wind | Air | Water | Waves | inHg | DewPt |
| KYWF1 - 8724580 - Key West, FL | 3 mi | 46 min | E 4.1G | 83°F | 86°F | 30.01 | ||
| SANF1 - Sand Key, FL | 10 mi | 26 min | E 11G | 84°F | 30.00 | 76°F | ||
| 42095 | 16 mi | 46 min | 84°F | 86°F | 2 ft | |||
| SMKF1 - Sombrero Key, FL | 34 mi | 26 min | E 8G | 84°F | 30.01 | 80°F | ||
| VCAF1 - 8723970 - Vaca Key, FL | 35 mi | 46 min | E 2.9G | 84°F | 86°F | 30.00 |
Wind History for Key West, FL
toggle option: (graph/table)
Link to 5 hour of 5 minute data for KEYW
Terminal Aerodrome Forecast (TAF) for KEYW
Wind History Graph: EYW
(wind in knots)
GEOS Local Image of Southeast
Edit Hide
Key West, FL,
NOTICE: Some pages have affiliate links to Amazon. As an Amazon Associate, I earn from qualifying purchases. Please read website Cookie, Privacy, and Disclamers by clicking HERE. To contact me click HERE. For my YouTube page click HERE
X