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| NWS Forecast for: Coastal waters from Port Mansfield TX to the Rio Grande River out 20 NM (GMZ150) Issued by: National Weather Service Brownsville, TX Last Update: 1251 AM CDT Sun Aug 31 2025 | |
| Today: South winds 5 to 10 knots, becoming southeast this afternoon. Seas 2 to 3 feet. Wave detail: southeast 1 foot at 4 seconds and east 1 foot at 8 seconds. Tonight: Southeast winds 5 to 10 knots, becoming south early in the morning. Seas 2 to 3 feet. Wave detail: southeast 2 feet at 4 seconds and east 1 foot at 8 seconds. A slight chance of showers and thunderstorms early in the morning. Monday: South winds around 5 knots, becoming northeast in the afternoon, then becoming 5 to 10 knots late in the afternoon. Seas 1 to 2 feet. Wave detail: east 1 foot at 3 seconds and east 1 foot at 8 seconds. A chance of thunderstorms in the morning. A chance of showers. A slight chance of thunderstorms in the afternoon. Monday Night: East winds 5 to 10 knots, becoming southeast early in the morning. Seas 1 to 2 feet. Wave detail: east 1 foot at 4 seconds and east 1 foot at 8 seconds. A slight chance of showers and thunderstorms in the evening, then showers likely with a chance of thunderstorms after midnight. Tuesday: Northwest winds 5 to 10 knots, becoming northeast in the afternoon. Seas 2 to 3 feet. Wave detail: northeast 2 feet at 4 seconds and southeast 1 foot at 5 seconds. A chance of thunderstorms. Showers likely, mainly in the morning. Tuesday Night: East winds 5 to 10 knots, becoming south early in the morning. Seas 2 to 3 feet. Wave detail: east 2 feet at 5 seconds and east 1 foot at 8 seconds. A chance of showers with a slight chance of thunderstorms early in the evening. A slight chance of showers in the late evening and overnight. A slight chance of thunderstorms after midnight. Wednesday: Northwest winds 5 to 10 knots, becoming northeast late in the afternoon. Seas 2 to 3 feet. A slight chance of showers and thunderstorms early in the morning. Wednesday Night: East winds 5 to 10 knots, becoming south early in the morning. Seas 2 to 3 feet. Thursday: Southwest winds around 5 knots, becoming east in the afternoon. Seas 1 to 2 feet. Thursday Night: Southeast winds 5 to 10 knots. Seas 1 to 2 feet. winds and seas higher in and near thunderstorms. | |
| Zone Forecast: Coastal waters from Port Mansfield TX to the Rio Grande River out 20 NM (GMZ150) | |
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