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Brownsville, TX Local Forecast Office

5NM NW Port Isabel TX

Marine Point Forecast

[NOTICE]
    • Today

      Today:ESE wind 9 to 14 kt. Sunny. Seas 1 ft or less.

      High: 88 °F

      ESE 14kt
      < 1ft

    • Tonight

      Tonight:ESE wind 5 to 12 kt. Mostly clear. Seas 1 ft or less.

      Low: 81 °F

      ESE 12kt
      < 1ft

    • Wednesday

      Wednesday:Variable winds less than 5 kt becoming E 7 to 12 kt in the afternoon. A slight chance of showers and thunderstorms, mainly between 3pm and 4pm.   Seas 1 ft or less.

      High: 87 °F

      ⇑E 12kt
      < 1ft

    • Wednesday Night

      Wednesday Night:ESE wind 5 to 10 kt becoming S after midnight. Mostly clear. Seas 1 ft or less.

      Low: 81 °F

      ESE 10kt
      < 1ft

    • Thursday

      Thursday:Variable winds less than 5 kt becoming SE 9 to 14 kt in the afternoon. A slight chance of showers and thunderstorms after 1pm.   Seas 1 ft or less.

      High: 88 °F

      ⇑SE 14kt
      < 1ft

    • Thursday Night

      Thursday Night:SE wind 9 to 13 kt. Mostly clear. Seas 1 ft or less.

      Low: 82 °F

      SE 13kt
      < 1ft

    • Friday

      Friday:SSE wind 9 to 17 kt. Sunny. Seas 1 ft or less.

      High: 89 °F

      SSE 17kt
      < 1ft

    • Friday Night

      Friday Night:SSE wind 12 to 16 kt. Mostly clear. Seas 1 ft or less.

      Low: 82 °F

      SSE 16kt
      < 1ft

    • Saturday

      Saturday:SSE wind 11 to 18 kt. Sunny. Seas 1 ft or less.

      High: 91 °F

      SSE 18kt
      < 1ft


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 11:18 am CDT Sep 8, 2026
Forecast Valid: 11am CDT Sep 8, 2026-6pm CDT Sep 14, 2026

View Nearby Observations

Detailed Forecast


Today
ESE wind 9 to 14 kt. Sunny. Seas 1 ft or less.
Tonight
ESE wind 5 to 12 kt. Mostly clear. Seas 1 ft or less.
Wednesday
Variable winds less than 5 kt becoming E 7 to 12 kt in the afternoon. A slight chance of showers and thunderstorms, mainly between 3pm and 4pm. Seas 1 ft or less.
Wednesday Night
ESE wind 5 to 10 kt becoming S after midnight. Mostly clear. Seas 1 ft or less.
Thursday
Variable winds less than 5 kt becoming SE 9 to 14 kt in the afternoon. A slight chance of showers and thunderstorms after 1pm. Seas 1 ft or less.
Thursday Night
SE wind 9 to 13 kt. Mostly clear. Seas 1 ft or less.
Friday
SSE wind 9 to 17 kt. Sunny. Seas 1 ft or less.
Friday Night
SSE wind 12 to 16 kt. Mostly clear. Seas 1 ft or less.
Saturday
SSE wind 11 to 18 kt. Sunny. 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: 11:18 am CDT Sep 8, 2026
Forecast Valid: 11am CDT Sep 8, 2026-6pm CDT Sep 14, 2026
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