Coastal Waters Forecast for Florida Bay including Barnes Sound, Blackwater Sound, and Buttonwood Sound (GMZ031) (Text-Only)
NWS Forecast for: Florida Bay including Barnes Sound, Blackwater Sound, and Buttonwood Sound (GMZ031)
Issued by: National Weather Service Key West, FL
Last Update: 1029 PM EDT Tue Aug 19 2025
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Overnight: North to northeast winds near 10 knots, becoming northwest to north. Bay waters a light chop. Scattered showers and isolated thunderstorms.

Wednesday: West to northwest winds near 10 knots, becoming west and increasing to 15 to 20 knots. Bay waters a light chop, becoming choppy. Scattered showers and thunderstorms.

Wednesday Night: West winds 15 to 20 knots, becoming southwest to west and decreasing to 10 to 15 knots. Bay waters choppy, becoming a light to moderate chop. Scattered showers and thunderstorms.

Thursday: Southwest to west winds 10 to 15 knots, decreasing to near 10 knots. Bay waters a light to moderate chop, becoming a light chop. Scattered showers and isolated thunderstorms.

Thursday Night: West winds decreasing to 5 to 10 knots. Bay waters becoming smooth to a light chop. Scattered showers and isolated thunderstorms.

Friday: Southwest to west winds 5 to 10 knots. Bay waters smooth to a light chop. Scattered showers and isolated thunderstorms.

Friday Night: West to northwest winds near 5 knots. Bay waters smooth. Scattered showers and isolated thunderstorms.

Saturday: Southwest to west winds near 5 knots, becoming variable. Bay waters smooth. Scattered showers and isolated thunderstorms.

Saturday Night: Variable winds near 5 knots. Bay waters smooth. Scattered showers and isolated thunderstorms.

Sunday: South winds 5 to 10 knots. Bay waters smooth to a light chop. Scattered showers and isolated thunderstorms.

Sunday Night: Northeast to east winds 5 to 10 knots. Bay waters smooth to a light chop. Scattered showers and isolated thunderstorms.







Zone Forecast: Florida Bay including Barnes Sound, Blackwater Sound, and Buttonwood Sound (GMZ031)

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