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- New: October-December2026 Outlook - After a brutally hot and dry September, October brings the pattern change to wetter and less hot, with above average rainfall to close out 2026; flash flooding, water supply, & hazardous marine conditions in focus
Hazardous Weather Conditions
Last Update: 333 AM CDT Sat Oct 17 2026
For More Weather Information:
46NM ENE Port Isabel TX
Marine Zone Forecast
Today
North winds 20 to 25 knots. Seas 11 to 14 feet, occasionally to 18 feet, subsiding to 9 to 12 feet, occasionally to 15 feet this afternoon. Wave detail: northeast 14 feet at 9 seconds, becoming northeast 12 feet at 9 seconds and north 6 feet at 7 seconds. A slight chance of showers this afternoon.
Tonight
North winds 20 to 25 knots, becoming northeast 15 to 20 knots in the late evening and overnight. Seas 7 to 10 feet, occasionally to 13 feet, subsiding to 4 to 6 feet, occasionally to 7 feet after midnight. Wave detail: northeast 8 feet at 8 seconds, becoming northeast 6 feet at 8 seconds.
Sunday
Northeast winds around 15 knots. Seas 4 to 6 feet, occasionally to 7 feet. Wave detail: northeast 6 feet at 8 seconds and north 2 feet at 5 seconds. A slight chance of showers in the afternoon.
Sunday Night
Northeast winds 10 to 15 knots. Seas 4 to 6 feet, occasionally to 8 feet. Wave detail: east 5 feet at 9 seconds and north 2 feet at 5 seconds. A slight chance of showers early in the morning.
Monday
Northeast winds 10 to 15 knots. Seas 4 to 5 feet. Wave detail: east 5 feet at 8 seconds. A chance of showers.
Monday Night
East winds 10 to 15 knots. Seas 4 to 6 feet, occasionally to 8 feet. Wave detail: east 5 feet at 8 seconds. A chance of showers early in the evening. A slight chance of showers in the late evening and early morning, then a chance of showers early in the morning.
Tuesday
Northeast winds 10 to 15 knots. Seas 4 to 5 feet. A chance of showers with a slight chance of thunderstorms.
Tuesday Night
East winds 10 to 15 knots. Seas 5 to 7 feet, occasionally to 9 feet. A chance of showers. A slight chance of thunderstorms in the evening, then a chance of thunderstorms after midnight.
Wednesday
East winds 10 to 15 knots. Seas 4 to 5 feet. A chance of showers and thunderstorms early in the morning, then a slight chance of thunderstorms in the afternoon. A slight chance of showers in the afternoon.
Wednesday Night
East winds 10 to 15 knots. Seas 4 to 5 feet. A slight chance of showers early in the evening.
winds and seas higher in and near thunderstorms.
winds and seas higher in and near thunderstorms.
Winds and seas higher in and near thunderstorms.
Additional Forecasts and Information
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