Last Update: 218 PM CDT Mon Aug 31 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, becoming south 5 to 10 knots after midnight. Light chop on the bay.
Tuesday
South winds 5 to 10 knots, becoming southeast 10 to 15 knots in the afternoon. Smooth on the bay, increasing to light chop late in the morning, then increasing to a moderate chop in the afternoon.
Tuesday Night
Southeast winds 10 to 15 knots, becoming south after midnight. A moderate chop on the bay.
Wednesday
South winds around 10 knots, becoming southeast in the afternoon. A moderate chop on the bay.
Wednesday Night
Southeast winds 10 to 15 knots, becoming south early in the morning. A moderate chop on the bay, diminishing to light chop early in the morning.
Thursday
South winds around 10 knots, becoming southeast in the afternoon. A moderate chop on the bay.
Thursday Night
Southeast winds 10 to 15 knots, becoming south 5 to 10 knots early in the morning. A moderate chop on the bay, diminishing to light chop early in the morning.
Friday
Southeast winds 5 to 10 knots, increasing to 10 to 15 knots in the afternoon. A moderate chop on the bay.
Friday Night
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.
Saturday
Southeast winds around 5 knots, becoming 5 to 10 knots early in the afternoon, then becoming east 10 to 15 knots late in the afternoon. Smooth on the bay, increasing to light chop early in the afternoon, then increasing to a moderate chop late in the afternoon.
Saturday Night
Southeast winds 10 to 15 knots, diminishing to 5 to 10 knots in the late evening and overnight. A moderate chop on the bay, diminishing to light chop in the late evening and overnight.



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218 PM CDT Mon Aug 31 2026
 
 

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