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Brownsville, TX Local Forecast Office

4NM ENE Port Isabel TX

Marine Point Forecast

[NOTICE]
    • Tonight

      Tonight:ENE wind 5 to 10 kt becoming variable and less than 5 kt. Partly cloudy. Seas 1 to 2 ft.

      Low: 78 °F

      ENE 10kt⇓
      1-2ft

    • Memorial Day

      Memorial Day:N wind 6 to 11 kt becoming ENE in the afternoon. Sunny. Seas 1 to 2 ft.

      High: 81 °F

      ENE 11kt
      1-2ft

    • Monday Night

      Monday Night:E wind 7 to 10 kt becoming SE after midnight. Partly cloudy. Seas 1 to 2 ft.

      Low: 79 °F

      E 10kt
      1-2ft

    • Tuesday

      Tuesday:SE wind 7 to 14 kt. Mostly sunny. Seas 1 to 2 ft.

      High: 83 °F

      SE 14kt
      1-2ft

    • Tuesday Night

      Tuesday Night:SE wind around 16 kt. A chance of showers and thunderstorms after 1am.   Seas around 2 ft.

      Low: 81 °F

      SE 16kt
      2ft

    • Wednesday

      Wednesday:SSE wind 16 to 18 kt. Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm.   Seas 2 to 3 ft.

      High: 83 °F

      SSE 18kt
      2-3ft

    • Wednesday Night

      Wednesday Night:SE wind 12 to 14 kt. A slight chance of showers and thunderstorms.   Seas 2 to 3 ft.

      Low: 79 °F

      SE 14kt
      2-3ft

    • Thursday

      Thursday:SE wind around 11 kt. Mostly sunny. Seas around 2 ft.

      High: 82 °F

      SE 11kt
      2ft

    • Thursday Night

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

      Low: 78 °F

      ESE 11kt
      2-3ft


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 9:15 pm CDT May 24, 2026
Forecast Valid: 9pm CDT May 24, 2026-6pm CDT May 31, 2026

View Nearby Observations

Detailed Forecast


Tonight
ENE wind 5 to 10 kt becoming variable and less than 5 kt. Partly cloudy. Seas 1 to 2 ft.
Memorial Day
N wind 6 to 11 kt becoming ENE in the afternoon. Sunny. Seas 1 to 2 ft.
Monday Night
E wind 7 to 10 kt becoming SE after midnight. Partly cloudy. Seas 1 to 2 ft.
Tuesday
SE wind 7 to 14 kt. Mostly sunny. Seas 1 to 2 ft.
Tuesday Night
SE wind around 16 kt. A chance of showers and thunderstorms after 1am. Seas around 2 ft.
Wednesday
SSE wind 16 to 18 kt. Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Seas 2 to 3 ft.
Wednesday Night
SE wind 12 to 14 kt. A slight chance of showers and thunderstorms. Seas 2 to 3 ft.
Thursday
SE wind around 11 kt. Mostly sunny. Seas around 2 ft.
Thursday Night
ESE wind 7 to 11 kt. Mostly clear. Seas 2 to 3 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: 9:15 pm CDT May 24, 2026
Forecast Valid: 9pm CDT May 24, 2026-6pm CDT May 31, 2026
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