Last Update: 214 PM CDT Mon May 18 2026

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Brownsville, TX Local Forecast Office

10NM N Port Isabel TX

Marine Zone Forecast


Tonight
Southeast winds 15 to 20 knots. Choppy on the bay.
Tuesday
Southeast winds around 15 knots. A moderate chop on the bay.
Tuesday Night
Southeast winds 10 to 15 knots. A moderate chop on the bay. A chance of showers and thunderstorms after midnight.
Wednesday
Southeast winds 10 to 15 knots. A moderate chop on the bay. A chance of showers with a slight chance of thunderstorms early in the morning.
Wednesday Night
Southeast winds 10 to 15 knots. A moderate chop on the bay.
Thursday
Southeast winds 10 to 15 knots. A moderate chop on the bay. A chance of showers. A slight chance of thunderstorms early in the morning, then a chance of thunderstorms in the afternoon.
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. A slight chance of showers in the evening. A chance of thunderstorms. A chance of showers after midnight.
Friday
South winds 5 to 10 knots, becoming southeast 10 to 15 knots in the afternoon. Light chop on the bay, increasing to a moderate chop in the afternoon. A chance of showers and thunderstorms.
Friday Night
Southeast winds 10 to 15 knots. A moderate chop on the bay. A chance of showers. A chance of thunderstorms until early morning, then a slight chance of thunderstorms early in the morning.
Saturday
Southeast winds 5 to 10 knots, increasing to 10 to 15 knots in the afternoon. A moderate chop on the bay. Showers likely with a slight chance of thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon.
Saturday Night
Southeast winds 10 to 15 knots, diminishing to 5 to 10 knots after midnight. Light chop on the bay. A chance of thunderstorms. A chance of showers in the evening, then showers likely after midnight.

winds and waves higher in and near thunderstorms.




Winds and waves higher in and near thunderstorms.
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214 PM CDT Mon May 18 2026
 
 

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