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Brownsville, TX Local Forecast Office

5NM NW Port Isabel TX

Marine Point Forecast

[NOTICE]
    • Tonight

      Tonight:NE wind 5 to 9 kt becoming E after midnight. Mostly cloudy. Seas 1 ft or less.

      Low: 59 °F

      NE 9kt
      < 1ft

    • Tuesday

      Tuesday:SE wind 7 to 13 kt. Mostly cloudy. Seas 1 ft or less.

      High: 72 °F

      SE 13kt
      < 1ft

    • Tuesday Night

      Tuesday Night:SSE wind 8 to 12 kt. A chance of showers and thunderstorms after midnight.   Seas 1 ft or less.

      Low: 67 °F

      SSE 12kt
      < 1ft

    • Wednesday

      Wednesday:SSE wind 8 to 11 kt. A chance of showers and thunderstorms.   Seas 1 ft or less.

      High: 74 °F

      SSE 11kt
      < 1ft

    • Wednesday Night

      Wednesday Night:S wind around 9 kt. A slight chance of showers before midnight.   Seas 1 ft or less.

      Low: 68 °F

      S 9kt
      < 1ft

    • Thursday

      Thursday:S wind 8 to 10 kt. Sunny. Seas 1 ft or less.

      High: 78 °F

      S 10kt
      < 1ft

    • Thursday Night

      Thursday Night:SE wind around 8 kt becoming NE after midnight. A slight chance of showers and thunderstorms after midnight.   Seas 1 ft or less.

      Low: 67 °F

      SE 8kt
      < 1ft

    • Friday

      Friday:NE wind 7 to 9 kt. Mostly sunny. Seas 1 ft or less.

      High: 73 °F

      NE 9kt
      < 1ft

    • Friday Night

      Friday Night:E wind 6 to 8 kt becoming SSE after midnight. Partly cloudy. Seas 1 ft or less.

      Low: 67 °F

      E 8kt
      < 1ft


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 7:30 pm CST Dec 15, 2025
Forecast Valid: 7pm CST Dec 15, 2025-6pm CST Dec 22, 2025

View Nearby Observations

Detailed Forecast


Tonight
NE wind 5 to 9 kt becoming E after midnight. Mostly cloudy. Seas 1 ft or less.
Tuesday
SE wind 7 to 13 kt. Mostly cloudy. Seas 1 ft or less.
Tuesday Night
SSE wind 8 to 12 kt. A chance of showers and thunderstorms after midnight. Seas 1 ft or less.
Wednesday
SSE wind 8 to 11 kt. A chance of showers and thunderstorms. Seas 1 ft or less.
Wednesday Night
S wind around 9 kt. A slight chance of showers before midnight. Seas 1 ft or less.
Thursday
S wind 8 to 10 kt. Sunny. Seas 1 ft or less.
Thursday Night
SE wind around 8 kt becoming NE after midnight. A slight chance of showers and thunderstorms after midnight. Seas 1 ft or less.
Friday
NE wind 7 to 9 kt. Mostly sunny. Seas 1 ft or less.
Friday Night
E wind 6 to 8 kt becoming SSE after midnight. Partly cloudy. 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: 7:30 pm CST Dec 15, 2025
Forecast Valid: 7pm CST Dec 15, 2025-6pm CST Dec 22, 2025
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