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Brownsville, TX Local Forecast Office

4NM ENE Port Isabel TX

Marine Point Forecast

[NOTICE]
    • This Afternoon

      This Afternoon:SE wind around 19 kt. Partly sunny. Seas around 2 ft.

      High: 78 °F

      SE 19kt
      2ft

    • Tonight

      Tonight:SSE wind 15 to 19 kt. A slight chance of showers after midnight.   Seas 2 to 4 ft.

      Low: 74 °F

      SSE 19kt
      2-4ft

    • Saturday

      Saturday:SE wind around 13 kt. Mostly sunny. Seas 2 to 3 ft.

      High: 78 °F

      SE 13kt
      2-3ft

    • Saturday Night

      Saturday Night:E wind 6 to 10 kt. A chance of showers, then showers and possibly a thunderstorm after 1am.   Seas 2 to 3 ft.

      Low: 72 °F

      E 10kt
      2-3ft

    • Sunday

      Sunday:NE wind 8 to 17 kt. Showers and possibly a thunderstorm.   Seas 2 to 4 ft.

      High: 74 °F

      NE 17kt
      2-4ft

    • Sunday Night

      Sunday Night:NNE wind 15 to 17 kt. Showers and possibly a thunderstorm.   Seas 3 to 5 ft.

      Low: 67 °F

      NNE 17kt
      3-5ft

    • Monday

      Monday:NNE wind 16 to 18 kt. Showers and possibly a thunderstorm before 1pm, then showers likely.   Seas around 3 ft.

      High: 70 °F

      NNE 18kt
      3ft

    • Monday Night

      Monday Night:NNE wind 9 to 17 kt. A chance of showers.   Seas 2 ft building to 5 ft.

      Low: 67 °F

      NNE 17kt
      Waves Building5ft

    • Tuesday

      Tuesday:NE wind 11 to 14 kt. A chance of showers.   Seas around 4 ft.

      High: 71 °F

      NE 14kt
      4ft


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 1:15 pm CDT Apr 3, 2026
Forecast Valid: 1pm CDT Apr 3, 2026-6pm CDT Apr 9, 2026

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Detailed Forecast


This Afternoon
SE wind around 19 kt. Partly sunny. Seas around 2 ft.
Tonight
SSE wind 15 to 19 kt. A slight chance of showers after midnight. Seas 2 to 4 ft.
Saturday
SE wind around 13 kt. Mostly sunny. Seas 2 to 3 ft.
Saturday Night
E wind 6 to 10 kt. A chance of showers, then showers and possibly a thunderstorm after 1am. Seas 2 to 3 ft.
Sunday
NE wind 8 to 17 kt. Showers and possibly a thunderstorm. Seas 2 to 4 ft.
Sunday Night
NNE wind 15 to 17 kt. Showers and possibly a thunderstorm. Seas 3 to 5 ft.
Monday
NNE wind 16 to 18 kt. Showers and possibly a thunderstorm before 1pm, then showers likely. Seas around 3 ft.
Monday Night
NNE wind 9 to 17 kt. A chance of showers. Seas 2 ft building to 5 ft.
Tuesday
NE wind 11 to 14 kt. A chance of showers. Seas around 4 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: 1:15 pm CDT Apr 3, 2026
Forecast Valid: 1pm CDT Apr 3, 2026-6pm CDT Apr 9, 2026
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