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Brownsville, TX Local Forecast Office

4NM ENE Port Isabel TX

Marine Point Forecast

[NOTICE]
    • Memorial Day

      Memorial Day:ENE wind 9 to 11 kt. Sunny. Seas around 1 ft.

      High: 81 °F

      ENE 11kt
      1ft

    • Tonight

      Tonight:E wind 8 to 10 kt becoming SE after midnight. Partly cloudy. Seas around 1 ft.

      Low: 79 °F

      E 10kt
      1ft

    • Tuesday

      Tuesday:SE wind 8 to 14 kt. Partly sunny. Seas around 1 ft.

      High: 83 °F

      SE 14kt
      1ft

    • Tuesday Night

      Tuesday Night:SE wind 14 to 18 kt. A chance of showers and thunderstorms after 1am.   Seas around 2 ft.

      Low: 81 °F

      SE 18kt
      2ft

    • Wednesday

      Wednesday:SSE wind 16 to 19 kt. A chance of showers and thunderstorms.   Seas 2 to 3 ft.

      High: 83 °F

      SSE 19kt
      2-3ft

    • Wednesday Night

      Wednesday Night:SE wind 11 to 15 kt. A chance of showers and thunderstorms, mainly after 1am.   Seas 2 to 3 ft.

      Low: 81 °F

      SE 15kt
      2-3ft

    • Thursday

      Thursday:ESE wind 9 to 12 kt. Mostly sunny. Seas around 2 ft.

      High: 83 °F

      ESE 12kt
      2ft

    • Thursday Night

      Thursday Night:ESE wind 7 to 11 kt. Mostly clear. Seas 2 to 3 ft.

      Low: 79 °F

      ESE 11kt
      2-3ft

    • Friday

      Friday:ESE wind 6 to 11 kt. Mostly sunny. Seas around 2 ft.

      High: 82 °F

      ESE 11kt
      2ft


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 1:18 pm CDT May 25, 2026
Forecast Valid: 1pm CDT May 25, 2026-6pm CDT May 31, 2026

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Detailed Forecast


Memorial Day
ENE wind 9 to 11 kt. Sunny. Seas around 1 ft.
Tonight
E wind 8 to 10 kt becoming SE after midnight. Partly cloudy. Seas around 1 ft.
Tuesday
SE wind 8 to 14 kt. Partly sunny. Seas around 1 ft.
Tuesday Night
SE wind 14 to 18 kt. A chance of showers and thunderstorms after 1am. Seas around 2 ft.
Wednesday
SSE wind 16 to 19 kt. A chance of showers and thunderstorms. Seas 2 to 3 ft.
Wednesday Night
SE wind 11 to 15 kt. A chance of showers and thunderstorms, mainly after 1am. Seas 2 to 3 ft.
Thursday
ESE wind 9 to 12 kt. Mostly sunny. Seas around 2 ft.
Thursday Night
ESE wind 7 to 11 kt. Mostly clear. Seas 2 to 3 ft.
Friday
ESE wind 6 to 11 kt. Mostly sunny. 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: 1:18 pm CDT May 25, 2026
Forecast Valid: 1pm CDT May 25, 2026-6pm CDT May 31, 2026
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