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: 150 PM CDT Tue Aug 25 2026
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Tonight: Southeast winds 10 to 15 knots, becoming south after midnight. Seas 2 to 3 feet. Wave detail: southeast 2 feet at 4 seconds.

Wednesday: South winds 5 to 10 knots, becoming southeast in the afternoon. Seas 1 to 2 feet. Wave detail: southeast 2 feet at 4 seconds.

Wednesday Night: Southeast winds around 10 knots, becoming south after midnight. Seas 2 to 3 feet. Wave detail: southeast 2 feet at 4 seconds.

Thursday: South winds 5 to 10 knots, diminishing to around 5 knots late in the morning, then becoming southeast early in the afternoon, increasing to 5 to 10 knots late in the afternoon. Seas 1 to 2 feet. Wave detail: southeast 1 foot at 4 seconds.

Thursday Night: Southeast winds around 10 knots, becoming south early in the morning. Seas 1 to 2 feet. Wave detail: southeast 2 feet at 4 seconds.

Friday: South winds 5 to 10 knots, diminishing to around 5 knots late in the morning, then becoming southeast in the afternoon. Seas 1 to 2 feet. Wave detail: southeast 2 feet at 4 seconds.

Friday Night: Southeast winds around 10 knots, becoming south after midnight. Seas 1 to 2 feet.

Saturday: South winds around 5 knots, becoming southeast late in the afternoon. Seas 1 to 2 feet.

Saturday Night: Southeast winds around 10 knots, becoming south after midnight. Seas 2 to 3 feet.

Sunday: South winds around 5 knots, becoming southeast in the afternoon. Seas 1 to 2 feet.

Sunday Night: Southeast winds 10 to 15 knots, becoming south early in the morning. Seas 2 to 3 feet.







Zone Forecast: Coastal waters from Port Mansfield TX to the Rio Grande River out 20 NM (GMZ150)

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