For More Weather Information:

Brownsville, TX Local Forecast Office

4NM ENE Port Isabel TX

Marine Point Forecast

[NOTICE]
    • Today

      Today:NW wind 9 to 15 kt becoming N in the afternoon. Mostly sunny. Seas 1 to 2 ft.

      High: 72 °F

      N 15kt
      1-2ft

    • Tonight

      Tonight:N wind 16 to 23 kt. Mostly cloudy, then gradually becoming clear. Seas 1 ft building to 5 ft.

      Low: 59 °F

      N 23kt
      Waves Building5ft

    • Thursday

      Thursday:N wind 15 to 20 kt decreasing to 9 to 14 kt in the afternoon. Sunny. Seas 5 ft subsiding to 2 ft.

      High: 63 °F

      N 20kt⇓
      5ftWaves Subsiding

    • Thursday Night

      Thursday Night:NNE wind 5 to 8 kt becoming S after midnight. Clear. Seas around 2 ft.

      Low: 57 °F

      NNE 8kt
      2ft

    • Friday

      Friday:S wind 9 to 11 kt. Sunny. Seas 1 to 2 ft.

      High: 70 °F

      S 11kt
      1-2ft

    • Friday Night

      Friday Night:SSE wind 7 to 9 kt becoming ENE after midnight. Partly cloudy. Seas 1 to 2 ft.

      Low: 64 °F

      SSE 9kt
      1-2ft

    • Saturday

      Saturday:ENE wind 9 to 13 kt. Mostly sunny. Seas 1 to 2 ft.

      High: 68 °F

      ENE 13kt
      1-2ft

    • Saturday Night

      Saturday Night:NE wind 9 to 12 kt. Partly cloudy. Seas 1 to 2 ft.

      Low: 61 °F

      NE 12kt
      1-2ft

    • Sunday

      Sunday:NE wind 10 to 12 kt. Mostly sunny. Seas 1 to 2 ft.

      High: 66 °F

      NE 12kt
      1-2ft


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 10:00 am CST Jan 14, 2026
Forecast Valid: 10am CST Jan 14, 2026-6pm CST Jan 20, 2026

View Nearby Observations

Detailed Forecast


Today
NW wind 9 to 15 kt becoming N in the afternoon. Mostly sunny. Seas 1 to 2 ft.
Tonight
N wind 16 to 23 kt. Mostly cloudy, then gradually becoming clear. Seas 1 ft building to 5 ft.
Thursday
N wind 15 to 20 kt decreasing to 9 to 14 kt in the afternoon. Sunny. Seas 5 ft subsiding to 2 ft.
Thursday Night
NNE wind 5 to 8 kt becoming S after midnight. Clear. Seas around 2 ft.
Friday
S wind 9 to 11 kt. Sunny. Seas 1 to 2 ft.
Friday Night
SSE wind 7 to 9 kt becoming ENE after midnight. Partly cloudy. Seas 1 to 2 ft.
Saturday
ENE wind 9 to 13 kt. Mostly sunny. Seas 1 to 2 ft.
Saturday Night
NE wind 9 to 12 kt. Partly cloudy. Seas 1 to 2 ft.
Sunday
NE wind 10 to 12 kt. Mostly sunny. Seas 1 to 2 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: 10:00 am CST Jan 14, 2026
Forecast Valid: 10am CST Jan 14, 2026-6pm CST Jan 20, 2026
  Forecast Discussion
  Get as KML Get as XML

RADAR & SATELLITE IMAGES

 Link to Satellite Data