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Hazardous Weather Conditions

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Brownsville, TX Local Forecast Office

4NM ENE Port Isabel TX

Marine Point Forecast

[NOTICE]

    • Sunday

      Sunday:S wind 9 to 14 kt becoming N 15 to 20 kt in the afternoon. Showers and possibly a thunderstorm. Seas 1 to 2 ft.

      High: 75 °FFalling Temperatures

      ⇑N 20kt
      1-2ft

    • Sunday Night

      Sunday Night:NNW wind 18 to 20 kt. A chance of showers and thunderstorms before 7pm, then showers likely and possibly a thunderstorm between 7pm and 3am, then showers likely after 3am. Seas around 2 ft.

      Low: 57 °F

      NNW 20kt
      2ft

    • Monday

      Monday:NW wind 11 to 17 kt. A chance of showers, mainly before noon. Seas around 2 ft.

      High: 64 °F

      NW 17kt
      2ft

    • Monday Night

      Monday Night:NNW wind 11 to 18 kt. A chance of showers, mainly after midnight. Seas 2 to 3 ft.

      Low: 63 °F

      NNW 18kt
      2-3ft

    • Tuesday

      Tuesday:N wind 13 to 19 kt. A chance of showers, mainly before noon. Seas 2 to 4 ft.

      High: 68 °F

      N 19kt
      2-4ft

    • Tuesday Night

      Tuesday Night:N wind 9 to 12 kt becoming E after midnight. A slight chance of showers. Seas around 2 ft.

      Low: 66 °F

      N 12kt
      2ft

    • Wednesday

      Wednesday:E wind 9 to 12 kt becoming S in the afternoon. A chance of showers after noon. Seas around 2 ft.

      High: 76 °F

      SSE 12kt
      2ft

    • Wednesday Night

      Wednesday Night:SSE wind around 11 kt. A chance of showers. Seas around 2 ft.

      Low: 73 °F

      SSE 11kt
      2ft

    • Thursday

      Thursday:S wind 10 to 12 kt becoming NE in the afternoon. A chance of showers, with thunderstorms also possible after noon. Seas around 2 ft.

      High: 78 °F

      S 12kt
      2ft


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 4:18 am CST Nov 30, 2025
Forecast Valid: 4am CST Nov 30, 2025-6pm CST Dec 6, 2025

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Detailed Forecast


Sunday
S wind 9 to 14 kt becoming N 15 to 20 kt in the afternoon. Showers and possibly a thunderstorm. Seas 1 to 2 ft.
Sunday Night
NNW wind 18 to 20 kt. A chance of showers and thunderstorms before 7pm, then showers likely and possibly a thunderstorm between 7pm and 3am, then showers likely after 3am. Seas around 2 ft.
Monday
NW wind 11 to 17 kt. A chance of showers, mainly before noon. Seas around 2 ft.
Monday Night
NNW wind 11 to 18 kt. A chance of showers, mainly after midnight. Seas 2 to 3 ft.
Tuesday
N wind 13 to 19 kt. A chance of showers, mainly before noon. Seas 2 to 4 ft.
Tuesday Night
N wind 9 to 12 kt becoming E after midnight. A slight chance of showers. Seas around 2 ft.
Wednesday
E wind 9 to 12 kt becoming S in the afternoon. A chance of showers after noon. Seas around 2 ft.
Wednesday Night
SSE wind around 11 kt. A chance of showers. Seas around 2 ft.
Thursday
S wind 10 to 12 kt becoming NE in the afternoon. A chance of showers, with thunderstorms also possible after noon. Seas around 2 ft.

*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: 4:18 am CST Nov 30, 2025
Forecast Valid: 4am CST Nov 30, 2025-6pm CST Dec 6, 2025
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