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Brownsville, TX Local Forecast Office

5NM NW Port Isabel TX

Marine Point Forecast

[NOTICE]
    • Today

      Today:N wind 8 to 16 kt. Showers and possibly a thunderstorm, mainly before 5pm, then a chance of showers and thunderstorms after 5pm.   Seas 1 ft or less.

      High: 84 °F

      N 16kt
      < 1ft

    • Tonight

      Tonight:NE wind 9 to 13 kt becoming NNW after midnight. Showers and thunderstorms before 1am, then showers and possibly a thunderstorm, mainly after 1am.   Seas 1 ft or less.

      Low: 78 °F

      NE 13kt
      < 1ft

    • Sunday

      Sunday:N wind 11 to 17 kt. Showers and possibly a thunderstorm.   Seas 1 ft or less.

      High: 82 °F

      N 17kt
      < 1ft

    • Sunday Night

      Sunday Night:NNE wind 10 to 14 kt. Showers and possibly a thunderstorm.   Seas 1 ft or less.

      Low: 78 °F

      NNE 14kt
      < 1ft

    • Monday

      Monday:N wind 14 to 19 kt. Showers and possibly a thunderstorm.   Seas 1 ft or less.

      High: 82 °F

      N 19kt
      < 1ft

    • Monday Night

      Monday Night:NNE wind 11 to 16 kt. Showers and possibly a thunderstorm.   Seas 1 ft or less.

      Low: 77 °F

      NNE 16kt
      < 1ft

    • Tuesday

      Tuesday:N wind 14 to 18 kt. Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm.   Seas 1 ft or less.

      High: 83 °F

      N 18kt
      < 1ft

    • Tuesday Night

      Tuesday Night:NNE wind 7 to 13 kt. A slight chance of showers and thunderstorms after 1am.   Seas 1 ft or less.

      Low: 77 °F

      NNE 13kt
      < 1ft

    • Wednesday

      Wednesday:N wind 10 to 17 kt. A slight chance of showers and thunderstorms.   Seas 1 ft or less.

      High: 86 °F

      N 17kt
      < 1ft


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 5:18 am CDT Oct 3, 2026
Forecast Valid: 5am CDT Oct 3, 2026-6pm CDT Oct 9, 2026

View Nearby Observations

Detailed Forecast


Today
N wind 8 to 16 kt. Showers and possibly a thunderstorm, mainly before 5pm, then a chance of showers and thunderstorms after 5pm. Seas 1 ft or less.
Tonight
NE wind 9 to 13 kt becoming NNW after midnight. Showers and thunderstorms before 1am, then showers and possibly a thunderstorm, mainly after 1am. Seas 1 ft or less.
Sunday
N wind 11 to 17 kt. Showers and possibly a thunderstorm. Seas 1 ft or less.
Sunday Night
NNE wind 10 to 14 kt. Showers and possibly a thunderstorm. Seas 1 ft or less.
Monday
N wind 14 to 19 kt. Showers and possibly a thunderstorm. Seas 1 ft or less.
Monday Night
NNE wind 11 to 16 kt. Showers and possibly a thunderstorm. Seas 1 ft or less.
Tuesday
N wind 14 to 18 kt. Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Seas 1 ft or less.
Tuesday Night
NNE wind 7 to 13 kt. A slight chance of showers and thunderstorms after 1am. Seas 1 ft or less.
Wednesday
N wind 10 to 17 kt. A slight chance of showers and thunderstorms. 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: 5:18 am CDT Oct 3, 2026
Forecast Valid: 5am CDT Oct 3, 2026-6pm CDT Oct 9, 2026
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