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Brownsville, TX Local Forecast Office

5NM NW Port Isabel TX

Marine Point Forecast

[NOTICE]
    • Today

      Today:E wind 5 to 13 kt. A slight chance of showers and thunderstorms after 1pm.   Seas 1 ft or less.

      High: 77 °F

      E 13kt
      < 1ft

    • Tonight

      Tonight:E wind 7 to 12 kt. A chance of showers and thunderstorms.   Seas 1 ft or less.

      Low: 71 °F

      E 12kt
      < 1ft

    • Friday

      Friday:ESE wind 6 to 13 kt. Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm.   Seas 1 ft or less.

      High: 77 °F

      ESE 13kt
      < 1ft

    • Friday Night

      Friday Night:ESE wind 8 to 12 kt. A slight chance of thunderstorms before 7pm.   Seas 1 ft or less.

      Low: 72 °F

      ESE 12kt
      < 1ft

    • Saturday

      Saturday:ESE wind 8 to 16 kt. A chance of showers, mainly before 1pm.   Seas 1 ft or less.

      High: 78 °F

      ESE 16kt
      < 1ft

    • Saturday Night

      Saturday Night:SE wind 13 to 15 kt. Mostly cloudy. Seas 1 ft or less.

      Low: 73 °F

      SE 15kt
      < 1ft

    • Sunday

      Sunday:SE wind 12 to 18 kt. Partly sunny. Seas 1 ft or less.

      High: 79 °F

      SE 18kt
      < 1ft

    • Sunday Night

      Sunday Night:SE wind 14 to 17 kt. Mostly cloudy. Seas 1 ft or less.

      Low: 73 °F

      SE 17kt
      < 1ft

    • Monday

      Monday:SE wind 14 to 20 kt, with gusts as high as 26 kt. Partly sunny. Seas around 5 ft.

      High: 80 °F

      SE 20kt
      5ft


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 7:18 am CDT Apr 9, 2026
Forecast Valid: 7am CDT Apr 9, 2026-6pm CDT Apr 15, 2026

View Nearby Observations

Detailed Forecast


Today
E wind 5 to 13 kt. A slight chance of showers and thunderstorms after 1pm. Seas 1 ft or less.
Tonight
E wind 7 to 12 kt. A chance of showers and thunderstorms. Seas 1 ft or less.
Friday
ESE wind 6 to 13 kt. Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Seas 1 ft or less.
Friday Night
ESE wind 8 to 12 kt. A slight chance of thunderstorms before 7pm. Seas 1 ft or less.
Saturday
ESE wind 8 to 16 kt. A chance of showers, mainly before 1pm. Seas 1 ft or less.
Saturday Night
SE wind 13 to 15 kt. Mostly cloudy. Seas 1 ft or less.
Sunday
SE wind 12 to 18 kt. Partly sunny. Seas 1 ft or less.
Sunday Night
SE wind 14 to 17 kt. Mostly cloudy. Seas 1 ft or less.
Monday
SE wind 14 to 20 kt, with gusts as high as 26 kt. Partly sunny. Seas around 5 ft.

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: 7:18 am CDT Apr 9, 2026
Forecast Valid: 7am CDT Apr 9, 2026-6pm CDT Apr 15, 2026
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