Expires:202608180830;;898189 FZUS52 KKEY 172019 CWFKEY Coastal Waters Forecast for the Florida Keys National Weather Service Key West FL 419 PM EDT Mon Aug 17 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. GMZ052>055-072>075-180830- 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- 419 PM EDT Mon Aug 17 2026 .TONIGHT...East winds 5 to 10 knots, becoming variable near 5 knots. Seas 1 to 2 feet. Wave Detail: East 2 feet at 4 seconds. .TUESDAY...Variable winds near 5 knots, becoming northwest to north. Seas around 1 foot. Wave Detail: East to southeast 1 foot at 4 seconds. .TUESDAY NIGHT...Northwest to north winds 5 to 10 knots. Seas 1 to 2 feet. Wave Detail: East 1 foot at 4 seconds. .WEDNESDAY...Northwest winds 5 to 10 knots. Seas 1 to 2 feet. .WEDNESDAY NIGHT...Northwest winds 5 to 10 knots, becoming south after midnight. Seas around 1 foot. .THURSDAY...Southeast to south winds near 5 knots. Seas around 1 foot. .THURSDAY NIGHT...East to southeast winds 5 to 10 knots. Seas 1 to 2 feet. A slight chance of showers. .FRIDAY...East to southeast winds 5 to 10 knots. Seas 1 to 2 feet. .FRIDAY NIGHT...East to southeast winds 5 to 10 knots. Seas 1 to 2 feet. A slight chance of showers. .SATURDAY...Southeast to south near 5 knots. Seas around 1 foot. .SATURDAY NIGHT...Southeast winds 5 to 10 knots. Seas 1 to 2 feet. A slight chance of showers. $$