Last Update: 202 AM CDT Sat May 16 2026

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Brownsville, TX Local Forecast Office

17NM NE Port Isabel TX

Marine Zone Forecast


Today
Southeast winds 15 to 20 knots. Seas 3 to 5 feet. Wave detail: southeast 4 feet at 6 seconds.
Tonight
Southeast winds 15 to 20 knots. Seas 3 to 5 feet. Wave detail: southeast 4 feet at 6 seconds.
Sunday
Southeast winds 15 to 20 knots. Seas 4 to 5 feet. Wave detail: southeast 5 feet at 7 seconds.
Sunday Night
Southeast winds 15 to 20 knots. Seas 4 to 5 feet, building to 5 to 7 feet, occasionally to 9 feet after midnight. Wave detail: southeast 5 feet at 7 seconds, becoming southeast 6 feet at 7 seconds.
Monday
Southeast winds 15 to 20 knots. Gusts to 30 knots late in the afternoon. Seas 5 to 7 feet, occasionally to 9 feet. Wave detail: southeast 6 feet at 8 seconds.
Monday Night
Southeast winds 15 to 20 knots. Gusts to 30 knots early in the evening. Seas 5 to 7 feet, occasionally to 9 feet. Wave detail: southeast 7 feet at 8 seconds.
Tuesday
Southeast winds 10 to 15 knots. Seas 5 to 7 feet, occasionally to 9 feet, subsiding to 4 to 5 feet in the afternoon.
Tuesday Night
Southeast winds around 15 knots. Seas 4 to 5 feet. A slight chance of showers and thunderstorms in the evening, then a chance of showers and thunderstorms after midnight.
Wednesday
Southeast winds 10 to 15 knots. Seas 4 to 5 feet. A chance of showers and thunderstorms early in the morning.
Wednesday Night
Southeast winds 10 to 15 knots. Seas 4 to 5 feet. A slight chance of showers and thunderstorms after midnight.

winds and seas higher in and near thunderstorms.



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202 AM CDT Sat May 16 2026
 
 

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