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Brownsville, TX Local Forecast Office

4NM ENE Port Isabel TX

Marine Point Forecast

[NOTICE]
    • Thursday

      Thursday:Variable winds less than 5 kt becoming E 5 to 9 kt in the afternoon. Patchy fog before 10am.  Seas around 1 ft.

      High: 71 °F

      ⇑E 9kt
      1ft

    • Thursday Night

      Thursday Night:ESE wind 7 to 9 kt. Mostly cloudy. Seas 1 to 2 ft.

      Low: 67 °F

      ESE 9kt
      1-2ft

    • Friday

      Friday:SE wind 7 to 15 kt. Mostly sunny. Seas 1 to 2 ft.

      High: 72 °F

      SE 15kt
      1-2ft

    • Friday Night

      Friday Night:SE wind 14 to 16 kt. Partly cloudy. Seas 1 to 3 ft.

      Low: 68 °F

      SE 16kt
      1-3ft

    • Saturday

      Saturday:S wind 14 to 19 kt. Mostly sunny. Seas 2 to 3 ft.

      High: 74 °F

      S 19kt
      2-3ft

    • Saturday Night

      Saturday Night:S wind 7 to 12 kt becoming WNW after midnight. Mostly clear. Seas around 2 ft.

      Low: 65 °F

      S 12kt
      2ft

    • Sunday

      Sunday:WNW wind 9 to 14 kt becoming NNE in the afternoon. Sunny. Seas 2 to 3 ft.

      High: 72 °F

      NNW 14kt
      2-3ft

    • Sunday Night

      Sunday Night:NE wind 5 to 9 kt becoming variable and less than 5 kt after midnight. Clear. Seas 1 to 2 ft.

      Low: 63 °F

      NE 9kt⇓
      1-2ft

    • Washington's Birthday

      Washington's Birthday:Variable winds less than 5 kt becoming E 6 to 11 kt in the morning. Sunny. Seas 1 to 2 ft.

      High: 70 °F

      ⇑E 11kt
      1-2ft


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 2:30 am CST Feb 12, 2026
Forecast Valid: 2am CST Feb 12, 2026-6pm CST Feb 18, 2026

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Detailed Forecast


Thursday
Variable winds less than 5 kt becoming E 5 to 9 kt in the afternoon. Patchy fog before 10am. Seas around 1 ft.
Thursday Night
ESE wind 7 to 9 kt. Mostly cloudy. Seas 1 to 2 ft.
Friday
SE wind 7 to 15 kt. Mostly sunny. Seas 1 to 2 ft.
Friday Night
SE wind 14 to 16 kt. Partly cloudy. Seas 1 to 3 ft.
Saturday
S wind 14 to 19 kt. Mostly sunny. Seas 2 to 3 ft.
Saturday Night
S wind 7 to 12 kt becoming WNW after midnight. Mostly clear. Seas around 2 ft.
Sunday
WNW wind 9 to 14 kt becoming NNE in the afternoon. Sunny. Seas 2 to 3 ft.
Sunday Night
NE wind 5 to 9 kt becoming variable and less than 5 kt after midnight. Clear. Seas 1 to 2 ft.
Washington's Birthday
Variable winds less than 5 kt becoming E 6 to 11 kt in the morning. Sunny. Seas 1 to 2 ft.

Winds and seas higher in and near thunderstorms.

*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: 26.11°N 97.16°W
Last Update: 2:30 am CST Feb 12, 2026
Forecast Valid: 2am CST Feb 12, 2026-6pm CST Feb 18, 2026
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