Coastal Waters Forecast for Coastal waters from Port Mansfield TX to the Rio Grande River out 20 NM (GMZ150) (Text-Only)
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: 1126 AM CST Thu Feb 12 2026


Rest Of Today: Southeast winds around 5 knots, increasing to 5 to 10 knots late this afternoon. Seas 2 to 3 feet. Wave detail: southeast 2 feet at 5 seconds.

Tonight: Southeast winds 5 to 10 knots. Seas 2 to 3 feet. Wave detail: southeast 2 feet at 6 seconds.

Friday: Southeast winds 5 to 10 knots, increasing to 10 to 15 knots late in the afternoon. Seas 2 to 3 feet. Wave detail: southeast 2 feet at 5 seconds.

Friday Night: Southeast winds 10 to 15 knots. Seas 2 to 4 feet. Wave detail: southeast 4 feet at 6 seconds. A chance of showers after midnight.

Saturday: South winds 15 to 20 knots. Seas 3 to 5 feet. Wave detail: southeast 5 feet at 7 seconds. A chance of showers.

Saturday Night: South winds 10 to 15 knots, becoming southwest 5 to 10 knots after midnight, then becoming west early in the morning. Seas 3 to 5 feet. Wave detail: southeast 4 feet at 7 seconds. A slight chance of showers and thunderstorms in the evening.

Sunday: Northwest winds 10 to 15 knots, becoming north late in the afternoon. Seas 3 to 5 feet.

Sunday Night: Northeast winds 5 to 10 knots. Seas 2 to 4 feet.

Monday: Northeast winds around 5 knots, becoming east late in the afternoon. Seas 2 to 3 feet.

Monday Night: Southeast winds around 10 knots. Seas 2 to 3 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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