National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

For More Weather Information:

Brownsville, TX Local Forecast Office

4NM ENE Port Isabel TX

Marine Point Forecast

[NOTICE]

    • Today

      Today:S wind 9 to 18 kt becoming N in the afternoon. A chance of showers and thunderstorms before noon, then showers likely and possibly a thunderstorm between noon and 3pm, then a chance of showers and thunderstorms after 3pm. Seas 1 to 2 ft.

      High: 74 °F

      N 18kt
      1-2ft

    • Tonight

      Tonight:NNW wind 20 to 22 kt. A chance of showers and thunderstorms. Seas 2 to 3 ft.

      Low: 59 °F

      NNW 22kt
      2-3ft

    • Friday

      Friday:NNW wind 11 to 20 kt. A chance of showers, mainly before noon. Seas 2 to 4 ft.

      High: 68 °F

      NNW 20kt
      2-4ft

    • Friday Night

      Friday Night:N wind 8 to 10 kt. A chance of showers. Seas 1 to 2 ft.

      Low: 67 °F

      N 10kt
      1-2ft

    • Saturday

      Saturday:NNW wind 7 to 9 kt becoming NE in the afternoon. Mostly cloudy. Seas 1 to 2 ft.

      High: 72 °F

      NNW 9kt
      1-2ft

    • Saturday Night

      Saturday Night:NE wind 5 to 7 kt becoming SW after midnight. Mostly cloudy. Seas around 1 ft.

      Low: 70 °F

      NE 7kt
      1ft

    • Sunday

      Sunday:W wind 5 to 12 kt becoming NNE in the afternoon. Mostly sunny. Seas 1 to 2 ft.

      High: 75 °F

      NNE 12kt
      1-2ft

    • Sunday Night

      Sunday Night:N wind 12 to 18 kt. Partly cloudy. Seas 1 to 2 ft.

      Low: 63 °F

      N 18kt
      1-2ft

    • Monday

      Monday:N wind 11 to 17 kt. Mostly sunny. Seas 2 to 3 ft.

      High: 66 °F

      N 17kt
      2-3ft


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 5:36 am CST Dec 4, 2025
Forecast Valid: 5am CST Dec 4, 2025-6pm CST Dec 10, 2025

View Nearby Observations

Detailed Forecast


Today
S wind 9 to 18 kt becoming N in the afternoon. A chance of showers and thunderstorms before noon, then showers likely and possibly a thunderstorm between noon and 3pm, then a chance of showers and thunderstorms after 3pm. Seas 1 to 2 ft.
Tonight
NNW wind 20 to 22 kt. A chance of showers and thunderstorms. Seas 2 to 3 ft.
Friday
NNW wind 11 to 20 kt. A chance of showers, mainly before noon. Seas 2 to 4 ft.
Friday Night
N wind 8 to 10 kt. A chance of showers. Seas 1 to 2 ft.
Saturday
NNW wind 7 to 9 kt becoming NE in the afternoon. Mostly cloudy. Seas 1 to 2 ft.
Saturday Night
NE wind 5 to 7 kt becoming SW after midnight. Mostly cloudy. Seas around 1 ft.
Sunday
W wind 5 to 12 kt becoming NNE in the afternoon. Mostly sunny. Seas 1 to 2 ft.
Sunday Night
N wind 12 to 18 kt. Partly cloudy. Seas 1 to 2 ft.
Monday
N wind 11 to 17 kt. Mostly sunny. Seas 2 to 3 ft.

*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...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

Point Forecast: 26.11°N 97.16°W
Last Update: 5:36 am CST Dec 4, 2025
Forecast Valid: 5am CST Dec 4, 2025-6pm CST Dec 10, 2025
  Forecast Discussion
  Get as KML Get as XML

RADAR & SATELLITE IMAGES

 Link to Satellite Data