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Brownsville, TX Local Forecast Office

5NM NW Port Isabel TX

Marine Point Forecast

[NOTICE]
    • This Afternoon

      This Afternoon:SE wind around 19 kt. Mostly cloudy. Seas 1 ft or less.

      High: 75 °F

      SE 19kt
      < 1ft

      Small Craft Advisory
      Small Craft Advisory

    • Tonight

      Tonight:SSE wind 18 to 21 kt. Cloudy, then gradually becoming partly cloudy. Seas 1 ft or less.

      Low: 72 °F

      SSE 21kt
      < 1ft

      Small Craft Advisory
      Small Craft Advisory

    • Saturday

      Saturday:SSE wind 18 to 22 kt. Mostly sunny. Seas 1 ft or less.

      High: 79 °F

      SSE 22kt
      < 1ft

      Small Craft Advisory
      Small Craft Advisory

    • Saturday Night

      Saturday Night:S wind 9 to 17 kt. A chance of showers, with thunderstorms also possible after 3am.   Seas 1 ft or less.

      Low: 72 °F

      S 17kt
      < 1ft

    • Sunday

      Sunday:Variable winds less than 5 kt becoming N 12 to 17 kt in the morning. Showers likely and possibly a thunderstorm.   Seas 1 ft or less.

      High: 72 °FFalling Temperatures

      ⇑N 17kt
      < 1ft

    • Sunday Night

      Sunday Night:N wind around 16 kt becoming NW after midnight. Showers likely.   Seas 1 ft or less.

      Low: 59 °F

      N 16kt
      < 1ft

    • Monday

      Monday:NW wind 11 to 14 kt. A chance of showers before noon.   Seas 1 ft or less.

      High: 63 °F

      NW 14kt
      < 1ft

    • Monday Night

      Monday Night:NNW wind 10 to 14 kt. A slight chance of showers.   Seas 1 ft or less.

      Low: 62 °F

      NNW 14kt
      < 1ft

    • Tuesday

      Tuesday:N wind 11 to 16 kt. Mostly cloudy. Seas 1 ft or less.

      High: 65 °F

      N 16kt
      < 1ft


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 5:18 pm CST Nov 28, 2025
Forecast Valid: 5pm CST Nov 28, 2025-6pm CST Dec 5, 2025

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Detailed Forecast


This Afternoon
SE wind around 19 kt. Mostly cloudy. Seas 1 ft or less.
Tonight
SSE wind 18 to 21 kt. Cloudy, then gradually becoming partly cloudy. Seas 1 ft or less.
Saturday
SSE wind 18 to 22 kt. Mostly sunny. Seas 1 ft or less.
Saturday Night
S wind 9 to 17 kt. A chance of showers, with thunderstorms also possible after 3am. Seas 1 ft or less.
Sunday
Variable winds less than 5 kt becoming N 12 to 17 kt in the morning. Showers likely and possibly a thunderstorm. Seas 1 ft or less.
Sunday Night
N wind around 16 kt becoming NW after midnight. Showers likely. Seas 1 ft or less.
Monday
NW wind 11 to 14 kt. A chance of showers before noon. Seas 1 ft or less.
Monday Night
NNW wind 10 to 14 kt. A slight chance of showers. Seas 1 ft or less.
Tuesday
N wind 11 to 16 kt. Mostly cloudy. Seas 1 ft or less.

Winds and waves 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: 26.15°N 97.29°W
Last Update: 5:18 pm CST Nov 28, 2025
Forecast Valid: 5pm CST Nov 28, 2025-6pm CST Dec 5, 2025
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