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Brownsville, TX Local Forecast Office

4NM NE Port Isabel TX

Marine Point Forecast

[NOTICE]
    • Today

      Today:N wind around 8 kt becoming ENE in the afternoon. Sunny. Seas around 1 ft.

      High: 77 °F

      N 8kt
      1ft

    • Tonight

      Tonight:E wind 7 to 13 kt becoming SE after midnight. Increasing clouds. Seas around 1 ft.

      Low: 74 °F

      SE 13kt
      1ft

    • Saturday

      Saturday:SE wind 13 to 16 kt. Mostly sunny. Seas 1 to 2 ft.

      High: 78 °F

      SE 16kt
      1-2ft

    • Saturday Night

      Saturday Night:SE wind 15 to 19 kt. A slight chance of showers after midnight.   Seas 2 to 3 ft.

      Low: 75 °F

      SE 19kt
      2-3ft

    • Sunday

      Sunday:SE wind 12 to 18 kt. A chance of showers after noon.   Seas around 3 ft.

      High: 79 °F

      SE 18kt
      3ft

    • Sunday Night

      Sunday Night:SE wind 8 to 17 kt becoming N after midnight. A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after midnight.   Seas 2 to 3 ft.

      Low: 69 °F

      N 17kt
      2-3ft

    • Monday

      Monday:N wind 20 to 24 kt. A chance of showers and thunderstorms, mainly before noon.   Seas 2 to 3 ft.

      High: 74 °F

      N 24kt
      2-3ft

    • Monday Night

      Monday Night:N wind 18 to 20 kt. A slight chance of showers and thunderstorms.   Seas around 3 ft.

      Low: 68 °F

      N 20kt
      3ft

    • Tuesday

      Tuesday:N wind 14 to 18 kt. A slight chance of showers.   Seas 3 to 4 ft.

      High: 73 °F

      N 18kt
      3-4ft


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 11:15 am CST Nov 13, 2026
Forecast Valid: 11am CST Nov 13, 2026-6pm CST Nov 19, 2026

View Nearby Observations

Detailed Forecast


Today
N wind around 8 kt becoming ENE in the afternoon. Sunny. Seas around 1 ft.
Tonight
E wind 7 to 13 kt becoming SE after midnight. Increasing clouds. Seas around 1 ft.
Saturday
SE wind 13 to 16 kt. Mostly sunny. Seas 1 to 2 ft.
Saturday Night
SE wind 15 to 19 kt. A slight chance of showers after midnight. Seas 2 to 3 ft.
Sunday
SE wind 12 to 18 kt. A chance of showers after noon. Seas around 3 ft.
Sunday Night
SE wind 8 to 17 kt becoming N after midnight. A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after midnight. Seas 2 to 3 ft.
Monday
N wind 20 to 24 kt. A chance of showers and thunderstorms, mainly before noon. Seas 2 to 3 ft.
Monday Night
N wind 18 to 20 kt. A slight chance of showers and thunderstorms. Seas around 3 ft.
Tuesday
N wind 14 to 18 kt. A slight chance of showers. Seas 3 to 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: 11:15 am CST Nov 13, 2026
Forecast Valid: 11am CST Nov 13, 2026-6pm CST Nov 19, 2026
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