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Brownsville, TX Local Forecast Office

5NM NW Port Isabel TX

Marine Point Forecast

[NOTICE]
    • Overnight

      Overnight:SSE wind 14 to 16 kt. Mostly cloudy. Seas 1 ft or less.

      Low: 71 °F

      SSE 16kt
      < 1ft

    • Saturday

      Saturday:SSE wind 13 to 16 kt. Cloudy through mid morning, then gradual clearing. Seas 1 ft or less.

      High: 80 °F

      SSE 16kt
      < 1ft

    • Saturday Night

      Saturday Night:SE wind 6 to 14 kt. A slight chance of showers and thunderstorms after 5am.   Seas 1 ft or less.

      Low: 72 °F

      SE 14kt
      < 1ft

    • Sunday

      Sunday:ESE wind 6 to 12 kt. A chance of showers.   Seas 1 ft or less.

      High: 78 °F

      ESE 12kt
      < 1ft

    • Sunday Night

      Sunday Night:ESE wind 7 to 10 kt becoming SSE after midnight. Increasing clouds. Seas 1 ft or less.

      Low: 71 °F

      ESE 10kt
      < 1ft

    • Monday

      Monday:SSE wind 8 to 17 kt. Cloudy, then gradually becoming mostly sunny. Seas 1 ft or less.

      High: 80 °F

      SSE 17kt
      < 1ft

    • Monday Night

      Monday Night:SSE wind around 16 kt. Mostly cloudy. Seas 1 ft or less.

      Low: 72 °F

      SSE 16kt
      < 1ft

    • Tuesday

      Tuesday:SSE wind 16 to 20 kt, with gusts as high as 26 kt. Mostly cloudy. Seas 1 ft or less.

      High: 80 °F

      SSE 20kt
      < 1ft

    • Tuesday Night

      Tuesday Night:SSE wind 10 to 18 kt. Mostly cloudy. Seas 1 ft or less.

      Low: 71 °F

      SSE 18kt
      < 1ft


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 11:31 pm CST Mar 6, 2026
Forecast Valid: 11pm CST Mar 6, 2026-6pm CDT Mar 13, 2026

View Nearby Observations

Detailed Forecast


Overnight
SSE wind 14 to 16 kt. Mostly cloudy. Seas 1 ft or less.
Saturday
SSE wind 13 to 16 kt. Cloudy through mid morning, then gradual clearing. Seas 1 ft or less.
Saturday Night
SE wind 6 to 14 kt. A slight chance of showers and thunderstorms after 5am. Seas 1 ft or less.
Sunday
ESE wind 6 to 12 kt. A chance of showers. Seas 1 ft or less.
Sunday Night
ESE wind 7 to 10 kt becoming SSE after midnight. Increasing clouds. Seas 1 ft or less.
Monday
SSE wind 8 to 17 kt. Cloudy, then gradually becoming mostly sunny. Seas 1 ft or less.
Monday Night
SSE wind around 16 kt. Mostly cloudy. Seas 1 ft or less.
Tuesday
SSE wind 16 to 20 kt, with gusts as high as 26 kt. Mostly cloudy. Seas 1 ft or less.
Tuesday Night
SSE wind 10 to 18 kt. Mostly 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: 11:31 pm CST Mar 6, 2026
Forecast Valid: 11pm CST Mar 6, 2026-6pm CDT Mar 13, 2026
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