For More Weather Information:

Brownsville, TX Local Forecast Office

4NM ENE Port Isabel TX

Marine Point Forecast

[NOTICE]
    • Today

      Today:W wind 8 to 15 kt becoming NNE in the afternoon. Sunny. Seas 2 to 4 ft.

      High: 72 °F

      NNW 15kt
      2-4ft

    • Tonight

      Tonight:NE wind 5 to 10 kt becoming variable and less than 5 kt after midnight. Mostly clear. Seas 1 to 3 ft.

      Low: 64 °F

      NE 10kt⇓
      1-3ft

    • Washington's Birthday

      Washington's Birthday:Variable winds less than 5 kt becoming E 5 to 9 kt in the afternoon. Mostly cloudy, then gradually becoming sunny. Seas 1 to 2 ft.

      High: 70 °F

      ⇑E 9kt
      1-2ft

    • Monday Night

      Monday Night:ESE wind around 9 kt becoming SSE after midnight. Mostly clear. Seas 1 to 2 ft.

      Low: 66 °F

      ESE 9kt
      1-2ft

    • Tuesday

      Tuesday:SSE wind 9 to 16 kt. Sunny. Seas 1 to 2 ft.

      High: 72 °F

      SSE 16kt
      1-2ft

    • Tuesday Night

      Tuesday Night:SSE wind around 15 kt. Mostly clear. Seas 1 ft building to 4 ft.

      Low: 68 °F

      SSE 15kt
      Waves Building4ft

    • Wednesday

      Wednesday:SSE wind around 15 kt. Sunny. Seas 2 to 4 ft.

      High: 74 °F

      SSE 15kt
      2-4ft

    • Wednesday Night

      Wednesday Night:S wind 13 to 15 kt. Mostly clear. Seas 4 ft subsiding to 1 ft.

      Low: 69 °F

      S 15kt
      4ftWaves Subsiding

    • Thursday

      Thursday:S wind 15 to 17 kt, with gusts as high as 23 kt. Mostly sunny. Seas 2 to 4 ft.

      High: 76 °F

      S 17kt
      2-4ft


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 5:45 am CST Feb 15, 2026
Forecast Valid: 5am CST Feb 15, 2026-6pm CST Feb 21, 2026

View Nearby Observations

Detailed Forecast


Today
W wind 8 to 15 kt becoming NNE in the afternoon. Sunny. Seas 2 to 4 ft.
Tonight
NE wind 5 to 10 kt becoming variable and less than 5 kt after midnight. Mostly clear. Seas 1 to 3 ft.
Washington's Birthday
Variable winds less than 5 kt becoming E 5 to 9 kt in the afternoon. Mostly cloudy, then gradually becoming sunny. Seas 1 to 2 ft.
Monday Night
ESE wind around 9 kt becoming SSE after midnight. Mostly clear. Seas 1 to 2 ft.
Tuesday
SSE wind 9 to 16 kt. Sunny. Seas 1 to 2 ft.
Tuesday Night
SSE wind around 15 kt. Mostly clear. Seas 1 ft building to 4 ft.
Wednesday
SSE wind around 15 kt. Sunny. Seas 2 to 4 ft.
Wednesday Night
S wind 13 to 15 kt. Mostly clear. Seas 4 ft subsiding to 1 ft.
Thursday
S wind 15 to 17 kt, with gusts as high as 23 kt. Mostly sunny. Seas 2 to 4 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...

ABOUT THIS FORECAST

Point Forecast: 26.11°N 97.16°W
Last Update: 5:45 am CST Feb 15, 2026
Forecast Valid: 5am CST Feb 15, 2026-6pm CST Feb 21, 2026
  Forecast Discussion
  Get as KML Get as XML

RADAR & SATELLITE IMAGES

 Link to Satellite Data