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Brownsville, TX Local Forecast Office

4NM ENE Port Isabel TX

Marine Point Forecast

[NOTICE]
    • This Afternoon

      This Afternoon:ESE wind around 9 kt. Sunny. Seas around 1 ft.

      High: 88 °F

      ESE 9kt
      1ft

    • Tonight

      Tonight:ESE wind 5 to 9 kt becoming S after midnight. Mostly clear. Seas around 1 ft.

      Low: 83 °F

      ESE 9kt
      1ft

    • Labor Day

      Labor Day:Variable winds less than 5 kt becoming E 5 to 9 kt in the afternoon. A chance of showers and thunderstorms, mainly before 2pm.   Seas around 1 ft.

      High: 86 °F

      ⇑E 9kt
      1ft

    • Monday Night

      Monday Night:E wind 5 to 9 kt becoming variable and less than 5 kt after midnight. A chance of showers and thunderstorms after 1am.   Seas around 1 ft.

      Low: 82 °F

      E 9kt⇓
      1ft

    • Tuesday

      Tuesday:W wind 5 to 10 kt becoming NNE in the afternoon. A chance of showers and thunderstorms.   Seas 1 to 2 ft.

      High: 86 °F

      NNE 10kt
      1-2ft

    • Tuesday Night

      Tuesday Night:NE wind 5 to 9 kt becoming SW after midnight. A slight chance of showers, with thunderstorms also possible after 4am.   Seas 1 to 2 ft.

      Low: 82 °F

      NE 9kt
      1-2ft

    • Wednesday

      Wednesday:NW wind 6 to 9 kt becoming NE in the afternoon. A slight chance of thunderstorms before 7am.   Seas 1 to 2 ft.

      High: 86 °F

      NNE 9kt
      1-2ft

    • Wednesday Night

      Wednesday Night:E wind 5 to 8 kt becoming S after midnight. Mostly clear. Seas around 1 ft.

      Low: 81 °F

      E 8kt
      1ft

    • Thursday

      Thursday:Variable winds less than 5 kt becoming E 5 to 9 kt in the afternoon. Sunny. Seas around 1 ft.

      High: 87 °F

      ⇑E 9kt
      1ft


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 1:45 pm CDT Aug 31, 2025
Forecast Valid: 2pm CDT Aug 31, 2025-6pm CDT Sep 6, 2025

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Detailed Forecast


This Afternoon
ESE wind around 9 kt. Sunny. Seas around 1 ft.
Tonight
ESE wind 5 to 9 kt becoming S after midnight. Mostly clear. Seas around 1 ft.
Labor Day
Variable winds less than 5 kt becoming E 5 to 9 kt in the afternoon. A chance of showers and thunderstorms, mainly before 2pm. Seas around 1 ft.
Monday Night
E wind 5 to 9 kt becoming variable and less than 5 kt after midnight. A chance of showers and thunderstorms after 1am. Seas around 1 ft.
Tuesday
W wind 5 to 10 kt becoming NNE in the afternoon. A chance of showers and thunderstorms. Seas 1 to 2 ft.
Tuesday Night
NE wind 5 to 9 kt becoming SW after midnight. A slight chance of showers, with thunderstorms also possible after 4am. Seas 1 to 2 ft.
Wednesday
NW wind 6 to 9 kt becoming NE in the afternoon. A slight chance of thunderstorms before 7am. Seas 1 to 2 ft.
Wednesday Night
E wind 5 to 8 kt becoming S after midnight. Mostly clear. Seas around 1 ft.
Thursday
Variable winds less than 5 kt becoming E 5 to 9 kt in the afternoon. Sunny. Seas around 1 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: 1:45 pm CDT Aug 31, 2025
Forecast Valid: 2pm CDT Aug 31, 2025-6pm CDT Sep 6, 2025
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