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Brownsville, TX Local Forecast Office

4NM ENE Port Isabel TX

Marine Point Forecast

[NOTICE]
    • Overnight

      Overnight:SE wind 14 to 16 kt. A slight chance of showers and thunderstorms after 4am.   Seas around 4 ft.

      Low: 81 °F

      SE 16kt
      4ft

    • Wednesday

      Wednesday:SE wind 13 to 16 kt. Partly sunny. Seas around 2 ft.

      High: 83 °F

      SE 16kt
      2ft

    • Wednesday Night

      Wednesday Night:ESE wind around 13 kt. Mostly cloudy. Seas 2 to 3 ft.

      Low: 80 °F

      ESE 13kt
      2-3ft

    • Thursday

      Thursday:SSE wind 11 to 15 kt. A chance of showers and thunderstorms.   Seas around 2 ft.

      High: 82 °F

      SSE 15kt
      2ft

    • Thursday Night

      Thursday Night:SSE wind 10 to 14 kt. A chance of showers and thunderstorms after 1am.   Seas 2 to 3 ft.

      Low: 80 °F

      SSE 14kt
      2-3ft

    • Friday

      Friday:SSE wind 10 to 17 kt. A slight chance of showers and thunderstorms before 1pm.   Seas around 2 ft.

      High: 83 °F

      SSE 17kt
      2ft

    • Friday Night

      Friday Night:SE wind 11 to 14 kt. A chance of showers and thunderstorms, mainly after 1am.   Seas around 2 ft.

      Low: 81 °F

      SE 14kt
      2ft

    • Saturday

      Saturday:SSE wind 11 to 16 kt. A chance of showers and thunderstorms, mainly before 1pm.   Seas around 2 ft.

      High: 83 °F

      SSE 16kt
      2ft

    • Saturday Night

      Saturday Night:SE wind 10 to 12 kt. A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am.   Seas around 2 ft.

      Low: 80 °F

      SE 12kt
      2ft


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 11:00 pm CDT May 19, 2026
Forecast Valid: 11pm CDT May 19, 2026-6pm CDT May 26, 2026

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Detailed Forecast


Overnight
SE wind 14 to 16 kt. A slight chance of showers and thunderstorms after 4am. Seas around 4 ft.
Wednesday
SE wind 13 to 16 kt. Partly sunny. Seas around 2 ft.
Wednesday Night
ESE wind around 13 kt. Mostly cloudy. Seas 2 to 3 ft.
Thursday
SSE wind 11 to 15 kt. A chance of showers and thunderstorms. Seas around 2 ft.
Thursday Night
SSE wind 10 to 14 kt. A chance of showers and thunderstorms after 1am. Seas 2 to 3 ft.
Friday
SSE wind 10 to 17 kt. A slight chance of showers and thunderstorms before 1pm. Seas around 2 ft.
Friday Night
SE wind 11 to 14 kt. A chance of showers and thunderstorms, mainly after 1am. Seas around 2 ft.
Saturday
SSE wind 11 to 16 kt. A chance of showers and thunderstorms, mainly before 1pm. Seas around 2 ft.
Saturday Night
SE wind 10 to 12 kt. A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Seas around 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: 11:00 pm CDT May 19, 2026
Forecast Valid: 11pm CDT May 19, 2026-6pm CDT May 26, 2026
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