Last Update: 159 PM CDT Tue Sep 15 2026

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Brownsville, TX Local Forecast Office

10NM N Port Isabel TX

Marine Zone Forecast


Tonight
Southeast winds 10 to 15 knots, diminishing to 5 to 10 knots after midnight. A moderate chop on the bay, diminishing to light chop after midnight.
Wednesday
Southeast winds around 5 knots, becoming east in the afternoon. Light chop on the bay.
Wednesday Night
East winds 5 to 10 knots. Light chop on the bay. A chance of showers with a slight chance of thunderstorms after midnight.
Thursday
Northeast winds around 5 knots, becoming east in the afternoon. Light chop on the bay. A chance of showers and thunderstorms.
Thursday Night
East winds 5 to 10 knots. Light chop on the bay. A slight chance of thunderstorms. A slight chance of showers in the evening, then a chance of showers after midnight.
Friday
East winds 5 to 10 knots. Light chop on the bay. A chance of showers with a slight chance of thunderstorms early in the morning, then a chance of showers and thunderstorms in the afternoon.
Friday Night
East winds 5 to 10 knots, becoming southeast after midnight. Light chop on the bay, diminishing to smooth after midnight.
Saturday
East winds around 5 knots, increasing to 5 to 10 knots in the afternoon. Light chop on the bay.
Saturday Night
East winds 5 to 10 knots, becoming southeast after midnight. Light chop on the bay.
Sunday
Southeast winds around 5 knots, becoming east in the afternoon. Light chop on the bay.
Sunday Night
Southeast winds 5 to 10 knots. Light chop on the bay.

winds and waves higher in and near thunderstorms.




Winds and waves higher in and near thunderstorms.
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159 PM CDT Tue Sep 15 2026
 
 

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