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Brownsville, TX Local Forecast Office

5NM NW Port Isabel TX

Marine Point Forecast

[NOTICE]
    • Overnight

      Overnight:SSE wind 9 to 11 kt. Partly cloudy. Seas 1 ft or less.

      Low: 81 °F

      SSE 11kt
      < 1ft

    • Friday

      Friday:SE wind 8 to 16 kt. Mostly sunny. Seas 1 ft or less.

      High: 90 °F

      SE 16kt
      < 1ft

    • Friday Night

      Friday Night:S wind 8 to 13 kt. Partly cloudy. Seas 1 ft or less.

      Low: 80 °F

      S 13kt
      < 1ft

    • Saturday

      Saturday:S wind 7 to 15 kt becoming SE in the afternoon. Mostly sunny. Seas 1 ft or less.

      High: 90 °F

      SE 15kt
      < 1ft

    • Saturday Night

      Saturday Night:SSE wind 7 to 13 kt. Mostly clear. Seas 1 ft or less.

      Low: 80 °F

      SSE 13kt
      < 1ft

    • Sunday

      Sunday:SE wind 5 to 14 kt. Sunny. Seas 1 ft or less.

      High: 89 °F

      SE 14kt
      < 1ft

    • Sunday Night

      Sunday Night:SE wind 7 to 12 kt. Mostly clear. Seas 1 ft or less.

      Low: 80 °F

      SE 12kt
      < 1ft

    • Monday

      Monday:SE wind 5 to 14 kt. Sunny. Seas 1 ft or less.

      High: 89 °F

      SE 14kt
      < 1ft

    • Monday Night

      Monday Night:SE wind 8 to 12 kt. Mostly clear. Seas 1 ft or less.

      Low: 81 °F

      SE 12kt
      < 1ft


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 12:45 am CDT Aug 21, 2026
Forecast Valid: 12am CDT Aug 21, 2026-6pm CDT Aug 27, 2026

View Nearby Observations

Detailed Forecast


Overnight
SSE wind 9 to 11 kt. Partly cloudy. Seas 1 ft or less.
Friday
SE wind 8 to 16 kt. Mostly sunny. Seas 1 ft or less.
Friday Night
S wind 8 to 13 kt. Partly cloudy. Seas 1 ft or less.
Saturday
S wind 7 to 15 kt becoming SE in the afternoon. Mostly sunny. Seas 1 ft or less.
Saturday Night
SSE wind 7 to 13 kt. Mostly clear. Seas 1 ft or less.
Sunday
SE wind 5 to 14 kt. Sunny. Seas 1 ft or less.
Sunday Night
SE wind 7 to 12 kt. Mostly clear. Seas 1 ft or less.
Monday
SE wind 5 to 14 kt. Sunny. Seas 1 ft or less.
Monday Night
SE wind 8 to 12 kt. Mostly clear. 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: 12:45 am CDT Aug 21, 2026
Forecast Valid: 12am CDT Aug 21, 2026-6pm CDT Aug 27, 2026
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