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Brownsville, TX Local Forecast Office

5NM NW Port Isabel TX

Marine Point Forecast

[NOTICE]
    • Tonight

      Tonight:NE wind 7 to 12 kt becoming variable and less than 5 kt after midnight. Partly cloudy. Seas 1 ft or less.

      Low: 77 °F

      NE 12kt⇓
      < 1ft

    • Memorial Day

      Memorial Day:Variable winds less than 5 kt becoming ENE 7 to 12 kt in the morning. Sunny. Seas 1 ft or less.

      High: 82 °F

      ⇑ENE 12kt
      < 1ft

    • Monday Night

      Monday Night:E wind 5 to 10 kt becoming SSE after midnight. Partly cloudy. Seas 1 ft or less.

      Low: 78 °F

      E 10kt
      < 1ft

    • Tuesday

      Tuesday:SE wind 5 to 14 kt. Mostly sunny. Seas 1 ft or less.

      High: 84 °F

      SE 14kt
      < 1ft

    • Tuesday Night

      Tuesday Night:SSE wind around 15 kt. A chance of showers and thunderstorms after 1am.   Seas 1 ft or less.

      Low: 81 °F

      SSE 15kt
      < 1ft

    • Wednesday

      Wednesday:SSE wind 14 to 17 kt. Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm.   Seas 1 ft or less.

      High: 84 °F

      SSE 17kt
      < 1ft

    • Wednesday Night

      Wednesday Night:SE wind 9 to 13 kt. A slight chance of showers and thunderstorms before 1am.   Seas 1 ft or less.

      Low: 78 °F

      SE 13kt
      < 1ft

    • Thursday

      Thursday:SE wind 8 to 12 kt. Mostly sunny. Seas 1 ft or less.

      High: 85 °F

      SE 12kt
      < 1ft

    • Thursday Night

      Thursday Night:SE wind 5 to 11 kt. Mostly clear. Seas 1 ft or less.

      Low: 77 °F

      SE 11kt
      < 1ft


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 6:18 pm CDT May 24, 2026
Forecast Valid: 6pm CDT May 24, 2026-6pm CDT May 31, 2026

View Nearby Observations

Detailed Forecast


Tonight
NE wind 7 to 12 kt becoming variable and less than 5 kt after midnight. Partly cloudy. Seas 1 ft or less.
Memorial Day
Variable winds less than 5 kt becoming ENE 7 to 12 kt in the morning. Sunny. Seas 1 ft or less.
Monday Night
E wind 5 to 10 kt becoming SSE after midnight. Partly cloudy. Seas 1 ft or less.
Tuesday
SE wind 5 to 14 kt. Mostly sunny. Seas 1 ft or less.
Tuesday Night
SSE wind around 15 kt. A chance of showers and thunderstorms after 1am. Seas 1 ft or less.
Wednesday
SSE wind 14 to 17 kt. Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Seas 1 ft or less.
Wednesday Night
SE wind 9 to 13 kt. A slight chance of showers and thunderstorms before 1am. Seas 1 ft or less.
Thursday
SE wind 8 to 12 kt. Mostly sunny. Seas 1 ft or less.
Thursday Night
SE wind 5 to 11 kt. Mostly clear. 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: 6:18 pm CDT May 24, 2026
Forecast Valid: 6pm CDT May 24, 2026-6pm CDT May 31, 2026
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