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Brownsville, TX Local Forecast Office

4NM ENE Port Isabel TX

Marine Point Forecast

[NOTICE]
    • This Afternoon

      This Afternoon:SSE wind 10 to 12 kt. Mostly sunny. Seas 2 to 3 ft.

      High: 77 °F

      SSE 12kt
      2-3ft

    • Tonight

      Tonight:SSE wind 6 to 12 kt becoming NNW after midnight. A chance of showers and thunderstorms after 3am.  Patchy fog after 11pm.  Seas around 2 ft.

      Low: 63 °F

      N 12kt
      2ft

    • Saturday

      Saturday:N wind 17 to 22 kt increasing to 23 to 28 kt in the morning. A chance of showers and thunderstorms before 9am, then a slight chance of showers between 9am and 10am.  Patchy fog before 7am.  Seas 2 to 4 ft.

      High: 68 °FFalling Temperatures

      ⇑N 28kt
      2-4ft

    • Saturday Night

      Saturday Night:N wind 24 to 26 kt. Cloudy. Seas 4 ft building to 7 ft.

      Low: 58 °F

      N 26kt
      Waves Building7ft

    • Sunday

      Sunday:N wind 18 to 23 kt. Mostly cloudy. Seas 6 ft subsiding to 3 ft.

      High: 62 °F

      N 23kt
      6ftWaves Subsiding

    • Sunday Night

      Sunday Night:N wind 13 to 17 kt. Cloudy. Seas 3 to 4 ft.

      Low: 59 °F

      N 17kt
      3-4ft

    • Monday

      Monday:N wind around 13 kt. A slight chance of showers.   Seas 2 to 4 ft.

      High: 64 °F

      N 13kt
      2-4ft

    • Monday Night

      Monday Night:NNE wind 7 to 12 kt. A slight chance of showers.   Seas 2 to 3 ft.

      Low: 59 °F

      NNE 12kt
      2-3ft

    • Tuesday

      Tuesday:NE wind 6 to 8 kt. Mostly cloudy. Seas 2 to 3 ft.

      High: 64 °F

      NE 8kt
      2-3ft


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 1:47 pm CST Jan 9, 2026
Forecast Valid: 1pm CST Jan 9, 2026-6pm CST Jan 15, 2026

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Detailed Forecast


This Afternoon
SSE wind 10 to 12 kt. Mostly sunny. Seas 2 to 3 ft.
Tonight
SSE wind 6 to 12 kt becoming NNW after midnight. A chance of showers and thunderstorms after 3am. Patchy fog after 11pm. Seas around 2 ft.
Saturday
N wind 17 to 22 kt increasing to 23 to 28 kt in the morning. A chance of showers and thunderstorms before 9am, then a slight chance of showers between 9am and 10am. Patchy fog before 7am. Seas 2 to 4 ft.
Saturday Night
N wind 24 to 26 kt. Cloudy. Seas 4 ft building to 7 ft.
Sunday
N wind 18 to 23 kt. Mostly cloudy. Seas 6 ft subsiding to 3 ft.
Sunday Night
N wind 13 to 17 kt. Cloudy. Seas 3 to 4 ft.
Monday
N wind around 13 kt. A slight chance of showers. Seas 2 to 4 ft.
Monday Night
NNE wind 7 to 12 kt. A slight chance of showers. Seas 2 to 3 ft.
Tuesday
NE wind 6 to 8 kt. Mostly cloudy. Seas 2 to 3 ft.

*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: 1:47 pm CST Jan 9, 2026
Forecast Valid: 1pm CST Jan 9, 2026-6pm CST Jan 15, 2026
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