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Brownsville, TX Local Forecast Office

5NM NW Port Isabel TX

Marine Point Forecast

[NOTICE]
    • Monday

      Monday:NW wind 11 to 16 kt. A chance of showers, mainly before 8am.   Seas 1 ft or less.

      High: 61 °F

      NW 16kt
      < 1ft

      Small Craft Advisory
      Small Craft Advisory

    • Monday Night

      Monday Night:NNW wind 10 to 17 kt. A chance of showers, mainly after midnight.   Seas 1 ft or less.

      Low: 57 °F

      NNW 17kt
      < 1ft

    • Tuesday

      Tuesday:N wind 12 to 17 kt. A slight chance of showers before noon.   Seas 1 ft or less.

      High: 63 °F

      N 17kt
      < 1ft

    • Tuesday Night

      Tuesday Night:NNE wind 5 to 10 kt becoming SSE after midnight. Mostly cloudy. Seas 1 ft or less.

      Low: 62 °F

      NNE 10kt
      < 1ft

    • Wednesday

      Wednesday:SSE wind 6 to 12 kt. A slight chance of showers after noon.   Seas 1 ft or less.

      High: 77 °F

      SSE 12kt
      < 1ft

    • Wednesday Night

      Wednesday Night:S wind around 10 kt. A slight chance of showers before midnight, then a slight chance of showers and thunderstorms between midnight and 3am, then a slight chance of showers after 3am.   Seas 1 ft or less.

      Low: 71 °F

      S 10kt
      < 1ft

    • Thursday

      Thursday:S wind 9 to 13 kt. A chance of showers, with thunderstorms also possible after noon.   Seas 1 ft or less.

      High: 78 °F

      S 13kt
      < 1ft

    • Thursday Night

      Thursday Night:SSE wind around 13 kt becoming NNW in the evening. Showers likely and possibly a thunderstorm.   Seas 1 ft or less.

      Low: 60 °F

      NNW 13kt
      < 1ft

    • Friday

      Friday:NNW wind 11 to 13 kt. A chance of showers.   Seas 1 ft or less.

      High: 67 °F

      NNW 13kt
      < 1ft


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 1:30 am CST Dec 1, 2025
Forecast Valid: 1am CST Dec 1, 2025-6pm CST Dec 7, 2025

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Detailed Forecast


Monday
NW wind 11 to 16 kt. A chance of showers, mainly before 8am. Seas 1 ft or less.
Monday Night
NNW wind 10 to 17 kt. A chance of showers, mainly after midnight. Seas 1 ft or less.
Tuesday
N wind 12 to 17 kt. A slight chance of showers before noon. Seas 1 ft or less.
Tuesday Night
NNE wind 5 to 10 kt becoming SSE after midnight. Mostly cloudy. Seas 1 ft or less.
Wednesday
SSE wind 6 to 12 kt. A slight chance of showers after noon. Seas 1 ft or less.
Wednesday Night
S wind around 10 kt. A slight chance of showers before midnight, then a slight chance of showers and thunderstorms between midnight and 3am, then a slight chance of showers after 3am. Seas 1 ft or less.
Thursday
S wind 9 to 13 kt. A chance of showers, with thunderstorms also possible after noon. Seas 1 ft or less.
Thursday Night
SSE wind around 13 kt becoming NNW in the evening. Showers likely and possibly a thunderstorm. Seas 1 ft or less.
Friday
NNW wind 11 to 13 kt. A chance of showers. 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: 1:30 am CST Dec 1, 2025
Forecast Valid: 1am CST Dec 1, 2025-6pm CST Dec 7, 2025
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