Last Update: 135 PM CDT Sat Aug 1 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 after midnight, then diminishing to 5 to 10 knots early this morning. A moderate chop on the bay, diminishing to light chop early this morning.
Sunday
South winds 5 to 10 knots, becoming southeast late in the morning, then increasing to 10 to 15 knots in the afternoon. Light chop on the bay, diminishing to smooth late in the morning, then increasing to a moderate chop in the afternoon.
Sunday Night
Southeast winds 10 to 15 knots, becoming south 5 to 10 knots after midnight. A moderate chop on the bay, diminishing to light chop early in the morning.
Monday
South winds 5 to 10 knots, becoming southeast 10 to 15 knots early in the afternoon, then increasing to 15 to 20 knots late in the afternoon. Light chop on the bay, increasing to a moderate chop early in the afternoon, then increasing to choppy late in the afternoon.
Monday Night
Southeast winds 15 to 20 knots, becoming south 10 to 15 knots in the late evening and overnight. Choppy on the bay, diminishing to a moderate chop in the late evening and overnight.
Tuesday
Southeast winds 10 to 15 knots, increasing to 15 to 20 knots in the afternoon. Choppy on the bay.
Tuesday Night
Southeast winds 15 to 20 knots, diminishing to 10 to 15 knots in the late evening and overnight. Choppy on the bay, diminishing to a moderate chop in the late evening and overnight.
Wednesday
Southeast winds 10 to 15 knots. A moderate chop on the bay.
Wednesday 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.
Thursday
Southeast winds 5 to 10 knots, increasing to 10 to 15 knots in the afternoon. A moderate chop on the bay.
Thursday Night
Southeast winds 10 to 15 knots, diminishing to 5 to 10 knots after midnight. Light chop on the bay.



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135 PM CDT Sat Aug 1 2026
 
 

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