Bayside and Gulf side from Craig Key to West End of Seven Mile Bridge Marine Forecast
| Overnight...Southeast To South Winds 10 To 15 Knots. Seas Around 1 Foot, Except Building To 1 To 2 Feet West Of The Marquesas Keys. Nearshore Waters A Light To Moderate Chop. Showers Likely With A Chance Of Thunderstorms. |
| Tuesday...South To Southwest Winds 10 To 15 Knots, Decreasing To 5 To 10 Knots In The Afternoon. Seas Around 1 Foot, Subsiding To 1 Foot Or Less. West Of The Marquesas Keys, Seas 1 To 2 Feet, Subsiding To Around 1 Foot. Nearshore Waters A Light To Moderate Chop, Becoming Smooth To A Light Chop. Showers Likely With A Chance Of Thunderstorms. |
| Tuesday Night...Southeast To South Winds 5 To 10 Knots, Increasing To Near 10 Knots. Seas 1 Foot Or Less, Except Around 1 Foot West Of The Marquesas Keys. Nearshore Waters Smooth To A Light Chop, Becoming A Light Chop. Showers Likely With A Chance Of Thunderstorms. |
| Wednesday...South Winds 5 To 10 Knots. Seas 1 Foot Or Less. Nearshore Waters Smooth To A Light Chop. Showers With A Chance Of Thunderstorms. |
| Wednesday Night...Southeast To South Winds Near 5 Knots. Seas 1 Foot Or Less. Nearshore Waters Smooth. Showers Likely With A Chance Of Thunderstorms. |
| Thursday...Southeast To South Winds Near 5 Knots. Seas 1 Foot Or Less. Nearshore Waters Smooth. Showers Likely With A Chance Of Thunderstorms. |
| Thursday Night...Southeast Winds Near 5 Knots, Becoming Northeast To East. Seas 1 Foot Or Less. Nearshore Waters Smooth. A Chance Of Showers And Thunderstorms. |
| Friday...Northeast Winds Near 5 Knots. Seas 1 Foot Or Less. Nearshore Waters Smooth. A Chance Of Showers And Thunderstorms. |
| Friday Night...Northeast Winds 5 To 10 Knots. Seas 1 Foot Or Less. Nearshore Waters Smooth To A Light Chop. A Chance Of Showers And Thunderstorms. |
| Saturday...Northeast Winds 5 To 10 Knots, Becoming Northeast To East. Seas 1 Foot Or Less. Nearshore Waters Smooth To A Light Chop, Becoming Smooth. Showers Likely With A Chance Of Thunderstorms. |
| Saturday Night...Northeast To East Winds 5 To 10 Knots. Seas 1 Foot Or Less. Nearshore Waters Smooth To A Light Chop. A Chance Of Showers And Thunderstorms. |
| Area Forecast Discussion National Weather Service Key West FL 1021pm EDT Monday September 21 2026 Issued at 926pm EDT Monday September 21 2026 An unusual broad upper trough blankets the Gulf of America, while a surface through lower level trough is aligned in the southeastern Gulf, across the Florida Peninsula and out into the Atlantic. This is making for an overall wetter than normal pattern as it has planted a wide band of increased lower level moisture across the Keys. This evenings sounding indicated precipitable water of around 2.1 inches modest CAPE, and minimal inhibition. A number of clusters of showers and thunderstorms have worked their way across the Keys and its waters through the afternoon and evening. No significant shift in the synoptic setup is expected through the overnight period. As a result, the Keys will remain with a broad zone conducive for shower and thunderstorm formation. Will maintain likely PoPs. The surface trough aligned to our northwest will maintain light to gentle southeast to southerly breezes. Expect overnight lows to be broadly near 80 with dew points remaining in the mid 70s. Marine Issued at 926pm EDT Monday September 21 2026 Broad troughing across the far southeastern Gulf and across the Florida Peninsula will result in gentle southeast to southeasterly breezes across Keys waters overnight. This trough will contribute to increased shower and thunderstorm coverage across the broader area. NOAA Key West FL Office: Watches - Warnings - Advisories FL...None. GM...None. |
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