For More Weather Information:

Brownsville, TX Local Forecast Office

5NM NW Port Isabel TX

Marine Point Forecast

[NOTICE]
    • This Afternoon

      This Afternoon:ESE wind 13 to 15 kt. Sunny. Seas 1 ft or less.

      High: 88 °F

      ESE 15kt
      < 1ft

    • Tonight

      Tonight:SE wind 6 to 12 kt. Mostly clear. Seas 1 ft or less.

      Low: 81 °F

      SE 12kt
      < 1ft

    • Sunday

      Sunday:SSE wind 5 to 14 kt becoming ESE in the afternoon. Sunny. Seas 1 ft or less.

      High: 88 °F

      ESE 14kt
      < 1ft

    • Sunday Night

      Sunday Night:ESE wind 5 to 11 kt becoming S after midnight. Mostly clear. Seas 1 ft or less.

      Low: 81 °F

      ESE 11kt
      < 1ft

    • Labor Day

      Labor Day:Variable winds less than 5 kt becoming ESE 9 to 14 kt in the morning. Sunny. Seas 1 ft or less.

      High: 88 °F

      ⇑ESE 14kt
      < 1ft

    • Monday Night

      Monday Night:SE wind 6 to 12 kt. Mostly clear. Seas 1 ft or less.

      Low: 81 °F

      SE 12kt
      < 1ft

    • Tuesday

      Tuesday:SE wind 5 to 14 kt. A slight chance of showers, with thunderstorms also possible after 10am.   Seas 1 ft or less.

      High: 88 °F

      SE 14kt
      < 1ft

    • Tuesday Night

      Tuesday Night:SE wind 5 to 12 kt. Partly cloudy. Seas 1 ft or less.

      Low: 81 °F

      SE 12kt
      < 1ft

    • Wednesday

      Wednesday:Variable winds less than 5 kt becoming ESE 6 to 11 kt in the morning. A chance of showers and thunderstorms.   Seas 1 ft or less.

      High: 90 °F

      ⇑ESE 11kt
      < 1ft


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 1:30 pm CDT Sep 5, 2026
Forecast Valid: 1pm CDT Sep 5, 2026-6pm CDT Sep 11, 2026

View Nearby Observations

Detailed Forecast


This Afternoon
ESE wind 13 to 15 kt. Sunny. Seas 1 ft or less.
Tonight
SE wind 6 to 12 kt. Mostly clear. Seas 1 ft or less.
Sunday
SSE wind 5 to 14 kt becoming ESE in the afternoon. Sunny. Seas 1 ft or less.
Sunday Night
ESE wind 5 to 11 kt becoming S after midnight. Mostly clear. Seas 1 ft or less.
Labor Day
Variable winds less than 5 kt becoming ESE 9 to 14 kt in the morning. Sunny. Seas 1 ft or less.
Monday Night
SE wind 6 to 12 kt. Mostly clear. Seas 1 ft or less.
Tuesday
SE wind 5 to 14 kt. A slight chance of showers, with thunderstorms also possible after 10am. Seas 1 ft or less.
Tuesday Night
SE wind 5 to 12 kt. Partly cloudy. Seas 1 ft or less.
Wednesday
Variable winds less than 5 kt becoming ESE 6 to 11 kt in the morning. A chance of showers and thunderstorms. 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.
Basemap Options
Click map to change the forecast location
Loading map...

ABOUT THIS FORECAST

Point Forecast: 26.15°N 97.29°W
Last Update: 1:30 pm CDT Sep 5, 2026
Forecast Valid: 1pm CDT Sep 5, 2026-6pm CDT Sep 11, 2026
  Forecast Discussion
  Get as KML Get as XML

RADAR & SATELLITE IMAGES

 Link to Satellite Data