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Brownsville, TX Local Forecast Office

4NM ENE Port Isabel TX

Marine Point Forecast

[NOTICE]
    • Tonight

      Tonight:NNW wind 13 to 18 kt. A chance of showers and thunderstorms, mainly after 7pm.   Seas around 2 ft.

      Low: 50 °F

      NNW 18kt
      2ft

    • Sunday

      Sunday:NNW wind 18 to 23 kt. Mostly cloudy. Seas 3 to 4 ft.

      High: 54 °F

      NNW 23kt
      3-4ft

    • Sunday Night

      Sunday Night:NNW wind around 24 kt. Mostly cloudy. Seas 4 to 6 ft.

      Low: 38 °F

      NNW 24kt
      4-6ft

    • Monday

      Monday:NNW wind 20 to 24 kt. A slight chance of showers.   Seas 6 ft subsiding to 3 ft.

      High: 49 °F

      NNW 24kt
      6ftWaves Subsiding

    • Monday Night

      Monday Night:N wind 11 to 19 kt. Mostly cloudy. Seas 3 to 4 ft.

      Low: 45 °F

      N 19kt
      3-4ft

    • Tuesday

      Tuesday:N wind 9 to 11 kt becoming E in the afternoon. Partly sunny. Seas 1 to 3 ft.

      High: 60 °F

      N 11kt
      1-3ft

    • Tuesday Night

      Tuesday Night:ESE wind 7 to 9 kt. A slight chance of showers after midnight.   Seas 1 to 2 ft.

      Low: 57 °F

      ESE 9kt
      1-2ft

    • Wednesday

      Wednesday:E wind 8 to 13 kt becoming N in the afternoon. A chance of showers.   Seas 1 to 2 ft.

      High: 62 °F

      N 13kt
      1-2ft

    • Wednesday Night

      Wednesday Night:NNE wind 10 to 12 kt. A slight chance of showers.   Seas around 2 ft.

      Low: 57 °F

      NNE 12kt
      2ft


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 6:18 pm CST Jan 24, 2026
Forecast Valid: 6pm CST Jan 24, 2026-6pm CST Jan 31, 2026

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Detailed Forecast


Tonight
NNW wind 13 to 18 kt. A chance of showers and thunderstorms, mainly after 7pm. Seas around 2 ft.
Sunday
NNW wind 18 to 23 kt. Mostly cloudy. Seas 3 to 4 ft.
Sunday Night
NNW wind around 24 kt. Mostly cloudy. Seas 4 to 6 ft.
Monday
NNW wind 20 to 24 kt. A slight chance of showers. Seas 6 ft subsiding to 3 ft.
Monday Night
N wind 11 to 19 kt. Mostly cloudy. Seas 3 to 4 ft.
Tuesday
N wind 9 to 11 kt becoming E in the afternoon. Partly sunny. Seas 1 to 3 ft.
Tuesday Night
ESE wind 7 to 9 kt. A slight chance of showers after midnight. Seas 1 to 2 ft.
Wednesday
E wind 8 to 13 kt becoming N in the afternoon. A chance of showers. Seas 1 to 2 ft.
Wednesday Night
NNE wind 10 to 12 kt. A slight chance of showers. 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: 6:18 pm CST Jan 24, 2026
Forecast Valid: 6pm CST Jan 24, 2026-6pm CST Jan 31, 2026
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