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Brownsville, TX Local Forecast Office

5NM NW Port Isabel TX

Marine Point Forecast

[NOTICE]
    • Today

      Today:Variable winds less than 5 kt becoming N 5 to 8 kt in the morning. Areas of dense fog before 10am.  Seas 1 ft or less.

      High: 78 °F

      ⇑N 8kt
      < 1ft

    • Tonight

      Tonight:N wind 9 to 15 kt, with gusts as high as 25 kt. Partly cloudy. Seas 1 ft or less.

      Low: 58 °F

      N 15kt
      < 1ft

      Small Craft Advisory
      Small Craft Advisory

    • Monday

      Monday:N wind 13 to 16 kt, with gusts as high as 24 kt. Mostly sunny. Seas 1 ft or less.

      High: 65 °F

      N 16kt
      < 1ft

      Small Craft Advisory
      Small Craft Advisory

    • Monday Night

      Monday Night:NNE wind 5 to 11 kt. Mostly clear. Seas 1 ft or less.

      Low: 55 °F

      NNE 11kt
      < 1ft

    • Tuesday

      Tuesday:NE wind 5 to 8 kt becoming ESE in the afternoon. Sunny. Seas 1 ft or less.

      High: 70 °F

      ESE 8kt
      < 1ft

    • Tuesday Night

      Tuesday Night:ESE wind around 9 kt becoming S after midnight. Mostly clear. Seas 1 ft or less.

      Low: 62 °F

      S 9kt
      < 1ft

    • Wednesday

      Wednesday:S wind 9 to 13 kt. Sunny. Seas 1 ft or less.

      High: 77 °F

      S 13kt
      < 1ft

    • Wednesday Night

      Wednesday Night:S wind 11 to 13 kt. Mostly clear. Seas 1 ft or less.

      Low: 68 °F

      S 13kt
      < 1ft

    • Thursday

      Thursday:S wind 11 to 14 kt. Sunny. Seas 1 ft or less.

      High: 79 °F

      S 14kt
      < 1ft


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 8:30 am CST Dec 7, 2025
Forecast Valid: 8am CST Dec 7, 2025-6pm CST Dec 13, 2025

View Nearby Observations

Detailed Forecast


Today
Variable winds less than 5 kt becoming N 5 to 8 kt in the morning. Areas of dense fog before 10am. Seas 1 ft or less.
Tonight
N wind 9 to 15 kt, with gusts as high as 25 kt. Partly cloudy. Seas 1 ft or less.
Monday
N wind 13 to 16 kt, with gusts as high as 24 kt. Mostly sunny. Seas 1 ft or less.
Monday Night
NNE wind 5 to 11 kt. Mostly clear. Seas 1 ft or less.
Tuesday
NE wind 5 to 8 kt becoming ESE in the afternoon. Sunny. Seas 1 ft or less.
Tuesday Night
ESE wind around 9 kt becoming S after midnight. Mostly clear. Seas 1 ft or less.
Wednesday
S wind 9 to 13 kt. Sunny. Seas 1 ft or less.
Wednesday Night
S wind 11 to 13 kt. Mostly clear. Seas 1 ft or less.
Thursday
S wind 11 to 14 kt. Sunny. Seas 1 ft or less.

*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: 8:30 am CST Dec 7, 2025
Forecast Valid: 8am CST Dec 7, 2025-6pm CST Dec 13, 2025
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