Last Update: 104 AM CDT Tue Oct 7 2025

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Brownsville, TX Local Forecast Office

46NM ENE Port Isabel TX

Marine Zone Forecast


Today
Southeast winds 5 to 10 knots, becoming east this afternoon. Seas 2 to 3 feet. Wave detail: southeast 2 feet at 4 seconds and east 2 feet at 7 seconds. A chance of showers. A slight chance of thunderstorms this morning, then a chance of thunderstorms this afternoon.
Tonight
East winds around 10 knots. Seas 2 to 3 feet. Wave detail: east 2 feet at 4 seconds and east 2 feet at 7 seconds. A slight chance of showers. A slight chance of thunderstorms early in the evening. A slight chance of thunderstorms after midnight.
Wednesday
Northeast winds 10 to 15 knots. Seas 2 to 4 feet. Wave detail: east 3 feet at 6 seconds. A slight chance of thunderstorms until late afternoon. A chance of showers.
Wednesday Night
Northeast winds 10 to 15 knots. Seas 3 to 4 feet. Wave detail: east 4 feet at 5 seconds. A chance of showers.
Thursday
Northeast winds 15 to 20 knots. Seas 4 to 5 feet. Wave detail: east 4 feet at 6 seconds. Showers likely with a slight chance of thunderstorms.
Thursday Night
Northeast winds 15 to 20 knots. Seas 4 to 5 feet. Wave detail: east 4 feet at 6 seconds. Showers likely early in the evening, then a chance of showers in the late evening and early morning. A slight chance of showers early in the morning.
Friday
Northeast winds 15 to 20 knots, diminishing to 10 to 15 knots in the afternoon. Seas 4 to 5 feet. A chance of showers with a slight chance of thunderstorms in the morning, then a slight chance of showers in the afternoon.
Friday Night
Northeast winds 10 to 15 knots. Seas 3 to 4 feet. A slight chance of showers.
Saturday
Northeast winds 10 to 15 knots. Seas 3 to 4 feet. A slight chance of showers.
Saturday Night
East winds around 10 knots. Seas 3 to 4 feet. A slight chance of showers in the evening.

winds and seas higher in and near thunderstorms.




Winds and seas higher in and near thunderstorms.
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104 AM CDT Tue Oct 7 2025
 
 

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