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Brownsville, TX Local Forecast Office

5NM NW Port Isabel TX

Marine Point Forecast

[NOTICE]
    • This Afternoon

      This Afternoon:NE wind around 10 kt. Partly sunny. Seas 1 to 2 ft.

      High: 75 °F

      NE 10kt
      1-2ft

    • Tonight

      Tonight:NE wind 5 to 9 kt becoming variable and less than 5 kt after midnight. Mostly cloudy. Seas 1 ft or less building to 4 ft.

      Low: 66 °F

      NE 9kt⇓
      Waves Building4ft

    • Saturday

      Saturday:Variable winds less than 5 kt becoming E 7 to 12 kt in the morning. Mostly cloudy, then gradually becoming sunny. Seas 1 to 2 ft.

      High: 75 °F

      ⇑E 12kt
      1-2ft

    • Saturday Night

      Saturday Night:E wind 7 to 11 kt becoming SSE after midnight. Partly cloudy. Seas 1 ft or less building to 3 ft.

      Low: 67 °F

      E 11kt
      Waves Building3ft

    • Sunday

      Sunday:SE wind 7 to 14 kt. Sunny. Seas 3 ft subsiding to 1 ft or less.

      High: 76 °F

      SE 14kt
      3ftWaves Subsiding

    • Sunday Night

      Sunday Night:SE wind 9 to 12 kt. Mostly clear. Seas 1 ft or less building to 3 ft.

      Low: 67 °F

      SE 12kt
      Waves Building3ft

    • Monday

      Monday:SE wind 9 to 14 kt. Sunny. Seas 5 ft subsiding to 1 ft or less.

      High: 77 °F

      SE 14kt
      5ftWaves Subsiding

    • Monday Night

      Monday Night:SE wind 10 to 12 kt. Mostly clear. Seas 1 ft or less building to 4 ft.

      Low: 68 °F

      SE 12kt
      Waves Building4ft

    • Tuesday

      Tuesday:SSE wind 10 to 17 kt. Mostly sunny. Seas 5 ft subsiding to 1 ft or less.

      High: 78 °F

      SSE 17kt
      5ftWaves Subsiding


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 4:45 pm CST Feb 27, 2026
Forecast Valid: 4pm CST Feb 27, 2026-6pm CST Mar 5, 2026

View Nearby Observations

Detailed Forecast


This Afternoon
NE wind around 10 kt. Partly sunny. Seas 1 to 2 ft.
Tonight
NE wind 5 to 9 kt becoming variable and less than 5 kt after midnight. Mostly cloudy. Seas 1 ft or less building to 4 ft.
Saturday
Variable winds less than 5 kt becoming E 7 to 12 kt in the morning. Mostly cloudy, then gradually becoming sunny. Seas 1 to 2 ft.
Saturday Night
E wind 7 to 11 kt becoming SSE after midnight. Partly cloudy. Seas 1 ft or less building to 3 ft.
Sunday
SE wind 7 to 14 kt. Sunny. Seas 3 ft subsiding to 1 ft or less.
Sunday Night
SE wind 9 to 12 kt. Mostly clear. Seas 1 ft or less building to 3 ft.
Monday
SE wind 9 to 14 kt. Sunny. Seas 5 ft subsiding to 1 ft or less.
Monday Night
SE wind 10 to 12 kt. Mostly clear. Seas 1 ft or less building to 4 ft.
Tuesday
SSE wind 10 to 17 kt. Mostly sunny. Seas 5 ft subsiding to 1 ft or less.

*Notices:

  1. This forecast is for a single location. For safety concerns, mariners should be aware of the weather over a larger area. Forecast information for a larger area can be found within the zone forecast and the NDFD graphics.
  2. The forecast conditions at a particular point may not exceed the criteria of a Small Craft Advisory, Gale, Storm etc. These watches/warnings/advisories are issued for the entire zone in which the point resides and mariners should act accordingly.
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ABOUT THIS FORECAST

Point Forecast: 26.15°N 97.29°W
Last Update: 4:45 pm CST Feb 27, 2026
Forecast Valid: 4pm CST Feb 27, 2026-6pm CST Mar 5, 2026
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