Chart / Forecasts

Gulf of America from East Cape Sable to Chokoloskee 20 to 60 NM out and beyond 5 fathoms

GMZ033 · Coastal Waters Forecast · National Weather Service Key West FL · Issued 421 PM EDT Sat Oct 3 2026
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Forecast
Tonight
East to southeast winds near 15 knots. Seas 2 to 3 feet. Wave Detail: East 2 feet at 4 seconds. A chance of showers and thunderstorms.
Sunday
East to southeast winds 10 to 15 knots. Seas 2 to 3 feet, subsiding 1 to 2 feet. Wave Detail: East to southeast 2 feet at 4 seconds. A chance of showers with a slight chance of thunderstorms.
Sunday Night
East to southeast winds near 10 knots. Seas 1 to 2 feet. Wave Detail: East to southeast 1 foot at 3 seconds. A slight chance of showers and thunderstorms.
Monday
Southeast winds 5 to 10 knots. Seas 1 to 2 feet. A slight chance of showers and thunderstorms.
Monday Night
Southeast winds 5 to 10 knots. Seas around 1 foot. A slight chance of showers and thunderstorms.
Tuesday
Southeast to south winds near 5 knots. Seas 1 foot or less. A chance of showers and thunderstorms.
Tuesday Night
Southeast to south winds 5 to 10 knots. Seas around 1 foot. A chance of showers with a slight chance of thunderstorms.
Wednesday
South to southwest winds 5 to 10 knots. Seas around 1 foot. Showers likely with a chance of thunderstorms.
Wednesday Night
South winds 5 to 10 knots. Seas around 1 foot. A chance of showers and thunderstorms.
Thursday
Southeast to south winds 5 to 10 knots. Seas around 1 foot. A chance of showers and thunderstorms.
Thursday Night
East winds near 5 knots, becoming east to southeast. Seas building 1 to 2 feet due to increasing southeasterly swell. A chance of showers and thunderstorms.
Synopsis
Atlantic high pressure offshore of the southeastern U.S. will remain in place throughout the remainder of the weekend. This feature will maintain moderate east to southeasterly breezes through tonight. However, a gradual slackening trend will occur during the remainder the weekend and into early next week. In addition, relatively drier weather conditions will settle in for the weekend, though isolated to scattered showers and occasional thunderstorms could still occur at times. A cold front then stalls across northern Florida into the new work week with highest rain chances remaining north of the Florida Keys but, precipitation chances will still remain around 20 to 30 percent daily into next week. The Approximate Shoreward Edge of the Gulf Stream as of October 2, 2026... 39 NM south-southeast of Dry Tortugas Light, on Loggerhead Key 14 NM south-southeast of Cosgrove Shoal Light, off the Marquesas Keys 8 NM south-southeast of Sand Key Light, off Key West 2 NM south-southeast of Looe Key, off Big Pine Key 1 NM south-southeast of Sombrero Key Light, off Marathon 0 NM south-southeast of Alligator Reef Light, off Islamorada 2 NM northwest of Molasses Reef Light, off Key Largo 2 NM northwest of Carysfort Reef Light, off Ocean Reef Gulf Stream Information Courtesy of the Naval Oceanographic Office.
Source: National Weather Service Coastal Waters Forecast (CWF), issued 421 PM EDT Sat Oct 3 2026, valid until Sun, 04 Oct 2026 08:30 UTC. Original text · All zones