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Brownsville, TX Local Forecast Office

5NM NNE Port Isabel TX

Marine Point Forecast

[NOTICE]
    • This Afternoon

      This Afternoon:SSE wind around 17 kt. Sunny. Seas 1 ft or less.

      High: 87 °F

      SSE 17kt
      < 1ft

    • Tonight

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

      Low: 82 °F

      SSE 15kt
      < 1ft

    • Wednesday

      Wednesday:SE wind 13 to 19 kt. Mostly sunny. Seas 1 ft or less.

      High: 86 °F

      SE 19kt
      < 1ft

    • Wednesday Night

      Wednesday Night:SE wind 14 to 17 kt. Partly cloudy. Seas 1 ft or less.

      Low: 80 °F

      SE 17kt
      < 1ft

    • Thursday

      Thursday:SE wind 11 to 13 kt. Sunny. Seas 1 ft or less.

      High: 85 °F

      SE 13kt
      < 1ft

    • Thursday Night

      Thursday Night:E wind 5 to 10 kt. Mostly clear. Seas 1 ft or less.

      Low: 79 °F

      E 10kt
      < 1ft

    • Friday

      Friday:NNE wind 7 to 12 kt increasing to 16 to 21 kt in the afternoon. A slight chance of showers, then showers likely and possibly a thunderstorm after 1pm.   Seas 1 ft or less.

      High: 84 °F

      ⇑NNE 21kt
      < 1ft

    • Friday Night

      Friday Night:NNE wind 21 to 27 kt. Showers likely and possibly a thunderstorm.   Seas 1 ft or less.

      Low: 74 °F

      NNE 27kt
      < 1ft

    • Saturday

      Saturday:N wind 25 to 29 kt, with gusts as high as 37 kt. Showers likely and possibly a thunderstorm before 1pm, then a chance of showers.   Seas 1 ft or less.

      High: 78 °F

      N 29kt
      < 1ft


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 4:45 pm CDT Oct 13, 2026
Forecast Valid: 4pm CDT Oct 13, 2026-6pm CDT Oct 19, 2026

View Nearby Observations

Detailed Forecast


This Afternoon
SSE wind around 17 kt. Sunny. Seas 1 ft or less.
Tonight
SSE wind around 15 kt. Mostly clear. Seas 1 ft or less.
Wednesday
SE wind 13 to 19 kt. Mostly sunny. Seas 1 ft or less.
Wednesday Night
SE wind 14 to 17 kt. Partly cloudy. Seas 1 ft or less.
Thursday
SE wind 11 to 13 kt. Sunny. Seas 1 ft or less.
Thursday Night
E wind 5 to 10 kt. Mostly clear. Seas 1 ft or less.
Friday
NNE wind 7 to 12 kt increasing to 16 to 21 kt in the afternoon. A slight chance of showers, then showers likely and possibly a thunderstorm after 1pm. Seas 1 ft or less.
Friday Night
NNE wind 21 to 27 kt. Showers likely and possibly a thunderstorm. Seas 1 ft or less.
Saturday
N wind 25 to 29 kt, with gusts as high as 37 kt. Showers likely and possibly a thunderstorm before 1pm, then a chance of showers. 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 97.19°W
Last Update: 4:45 pm CDT Oct 13, 2026
Forecast Valid: 4pm CDT Oct 13, 2026-6pm CDT Oct 19, 2026
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