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Brownsville, TX Local Forecast Office

5NM NW Port Isabel TX

Marine Point Forecast

[NOTICE]
    • This Afternoon

      This Afternoon:ESE wind 15 to 17 kt. Sunny. Seas 1 ft or less.

      High: 88 °F

      ESE 17kt
      < 1ft

    • Tonight

      Tonight:SSE wind 8 to 15 kt. Mostly clear. Seas 1 ft or less.

      Low: 82 °F

      SSE 15kt
      < 1ft

    • Tuesday

      Tuesday:SSE wind 7 to 16 kt. Sunny. Seas 1 ft or less.

      High: 89 °F

      SSE 16kt
      < 1ft

    • Tuesday Night

      Tuesday Night:SE wind 8 to 13 kt becoming variable and less than 5 kt after midnight. Mostly clear. Seas 1 ft or less.

      Low: 81 °F

      SE 13kt⇓
      < 1ft

    • Wednesday

      Wednesday:Variable winds less than 5 kt becoming E 8 to 13 kt in the afternoon. Sunny. Seas 1 ft or less.

      High: 88 °F

      ⇑E 13kt
      < 1ft

    • Wednesday Night

      Wednesday Night:E wind 5 to 10 kt becoming variable and less than 5 kt after midnight. A slight chance of showers and thunderstorms after 1am.   Seas 1 ft or less.

      Low: 80 °F

      E 10kt⇓
      < 1ft

    • Thursday

      Thursday:Variable winds less than 5 kt becoming ENE 7 to 12 kt in the afternoon. A chance of showers and thunderstorms.   Seas 1 ft or less.

      High: 87 °F

      ⇑ENE 12kt
      < 1ft

    • Thursday Night

      Thursday Night:ENE wind 5 to 9 kt becoming variable and less than 5 kt after midnight. A chance of showers and thunderstorms, mainly after 1am.   Seas 1 ft or less.

      Low: 80 °F

      ENE 9kt⇓
      < 1ft

    • Friday

      Friday:Variable winds less than 5 kt becoming ENE 7 to 12 kt in the morning. A chance of showers and thunderstorms before 1pm.   Seas 1 ft or less.

      High: 89 °F

      ⇑ENE 12kt
      < 1ft


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 1:26 pm CDT Sep 14, 2026
Forecast Valid: 1pm CDT Sep 14, 2026-6pm CDT Sep 20, 2026

View Nearby Observations

Detailed Forecast


This Afternoon
ESE wind 15 to 17 kt. Sunny. Seas 1 ft or less.
Tonight
SSE wind 8 to 15 kt. Mostly clear. Seas 1 ft or less.
Tuesday
SSE wind 7 to 16 kt. Sunny. Seas 1 ft or less.
Tuesday Night
SE wind 8 to 13 kt becoming variable and less than 5 kt after midnight. Mostly clear. Seas 1 ft or less.
Wednesday
Variable winds less than 5 kt becoming E 8 to 13 kt in the afternoon. Sunny. Seas 1 ft or less.
Wednesday Night
E wind 5 to 10 kt becoming variable and less than 5 kt after midnight. A slight chance of showers and thunderstorms after 1am. Seas 1 ft or less.
Thursday
Variable winds less than 5 kt becoming ENE 7 to 12 kt in the afternoon. A chance of showers and thunderstorms. Seas 1 ft or less.
Thursday Night
ENE wind 5 to 9 kt becoming variable and less than 5 kt after midnight. A chance of showers and thunderstorms, mainly after 1am. Seas 1 ft or less.
Friday
Variable winds less than 5 kt becoming ENE 7 to 12 kt in the morning. A chance of showers and thunderstorms before 1pm. 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: 1:26 pm CDT Sep 14, 2026
Forecast Valid: 1pm CDT Sep 14, 2026-6pm CDT Sep 20, 2026
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