Last Update: 1250 AM CST Wed Jan 21 2026

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Brownsville, TX Local Forecast Office

10NM N Port Isabel TX

Marine Zone Forecast


Today
South winds 5 to 10 knots, becoming southeast late this afternoon. Light chop on the bay. Showers likely, mainly this morning.
Tonight
East winds around 5 knots. Smooth on the bay. A slight chance of showers in the evening.
Thursday
East winds around 5 knots, increasing to 5 to 10 knots in the afternoon. Light chop on the bay.
Thursday Night
Southeast winds 5 to 10 knots. Light chop on the bay.
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. A moderate chop on the bay. A slight chance of showers in the evening, then a chance of showers and thunderstorms after midnight.
Saturday
Northeast winds 10 to 15 knots, becoming northwest in the afternoon, then becoming north 15 to 20 knots late in the afternoon. A moderate chop on the bay, increasing to choppy late in the afternoon. A chance of showers.
Saturday Night
North winds 15 to 20 knots. Choppy on the bay. A chance of showers.
Sunday
North winds 15 to 20 knots. Choppy on the bay. A chance of drizzle, showers with a slight chance of freezing drizzle in the morning, then a slight chance of showers in the afternoon.
Sunday Night
North winds 15 to 20 knots. Choppy on the bay. A slight chance of showers and drizzle.

winds and waves higher in and near thunderstorms.




Winds and waves higher in and near thunderstorms.
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1250 AM CST Wed Jan 21 2026
 
 

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