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Brownsville, TX Local Forecast Office

5NM NW Port Isabel TX

Marine Point Forecast

[NOTICE]
    • Tonight

      Tonight:E wind 6 to 11 kt becoming variable and less than 5 kt after midnight. Partly cloudy. Seas 1 ft or less.

      Low: 80 °F

      E 11kt⇓
      < 1ft

    • Sunday

      Sunday:Variable winds less than 5 kt becoming E 7 to 12 kt in the afternoon. Mostly sunny. Seas 1 ft or less.

      High: 87 °F

      ⇑E 12kt
      < 1ft

    • Sunday Night

      Sunday Night:ESE wind 5 to 10 kt becoming variable and less than 5 kt after midnight. Partly cloudy. Seas 1 ft or less.

      Low: 80 °F

      ESE 10kt⇓
      < 1ft

    • Monday

      Monday:Variable winds less than 5 kt becoming ESE 8 to 13 kt in the afternoon. Sunny. Seas 1 ft or less.

      High: 87 °F

      ⇑ESE 13kt
      < 1ft

    • Monday Night

      Monday Night:ESE wind 8 to 12 kt. Partly cloudy. Seas 1 ft or less.

      Low: 81 °F

      ESE 12kt
      < 1ft

    • Tuesday

      Tuesday:SSE wind 7 to 17 kt. A slight chance of showers and thunderstorms after 1pm.   Seas 1 ft or less.

      High: 89 °F

      SSE 17kt
      < 1ft

    • Tuesday Night

      Tuesday Night:SSE wind around 16 kt. A slight chance of showers and thunderstorms before 1am.   Seas 1 ft or less.

      Low: 83 °F

      SSE 16kt
      < 1ft

    • Wednesday

      Wednesday:SSE wind 16 to 21 kt. Mostly sunny. Seas 1 ft or less.

      High: 92 °F

      SSE 21kt
      < 1ft

    • Wednesday Night

      Wednesday Night:SE wind 15 to 18 kt. A chance of showers and thunderstorms, mainly after 1am.   Seas 1 ft or less.

      Low: 82 °F

      SE 18kt
      < 1ft


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 6:45 pm CDT Sep 26, 2026
Forecast Valid: 6pm CDT Sep 26, 2026-6pm CDT Oct 3, 2026

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Detailed Forecast


Tonight
E wind 6 to 11 kt becoming variable and less than 5 kt after midnight. Partly cloudy. Seas 1 ft or less.
Sunday
Variable winds less than 5 kt becoming E 7 to 12 kt in the afternoon. Mostly sunny. Seas 1 ft or less.
Sunday Night
ESE wind 5 to 10 kt becoming variable and less than 5 kt after midnight. Partly cloudy. Seas 1 ft or less.
Monday
Variable winds less than 5 kt becoming ESE 8 to 13 kt in the afternoon. Sunny. Seas 1 ft or less.
Monday Night
ESE wind 8 to 12 kt. Partly cloudy. Seas 1 ft or less.
Tuesday
SSE wind 7 to 17 kt. A slight chance of showers and thunderstorms after 1pm. Seas 1 ft or less.
Tuesday Night
SSE wind around 16 kt. A slight chance of showers and thunderstorms before 1am. Seas 1 ft or less.
Wednesday
SSE wind 16 to 21 kt. Mostly sunny. Seas 1 ft or less.
Wednesday Night
SE wind 15 to 18 kt. A chance of showers and thunderstorms, mainly after 1am. Seas 1 ft or less.

Winds and waves 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: 26.15°N 97.29°W
Last Update: 6:45 pm CDT Sep 26, 2026
Forecast Valid: 6pm CDT Sep 26, 2026-6pm CDT Oct 3, 2026
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