For More Weather Information:

Brownsville, TX Local Forecast Office

4NM ENE Port Isabel TX

Marine Point Forecast

[NOTICE]
    • Today

      Today:E wind 9 to 12 kt. A slight chance of showers before 11am.   Seas around 2 ft.

      High: 69 °F

      E 12kt
      2ft

    • Tonight

      Tonight:ESE wind 9 to 12 kt becoming S after midnight. A chance of showers before 3am, then a slight chance of showers after 4am.   Seas 1 to 2 ft.

      Low: 66 °F

      ESE 12kt
      1-2ft

    • Wednesday

      Wednesday:S wind around 9 kt becoming SE in the afternoon. A chance of showers.   Seas 2 to 3 ft.

      High: 71 °F

      S 9kt
      2-3ft

    • Wednesday Night

      Wednesday Night:SSE wind 5 to 7 kt. A chance of showers, mainly before midnight.   Seas around 2 ft.

      Low: 66 °F

      SSE 7kt
      2ft

    • Thursday

      Thursday:ESE wind 5 to 9 kt. Mostly sunny. Seas 2 to 3 ft.

      High: 71 °F

      ESE 9kt
      2-3ft

    • Thursday Night

      Thursday Night:ESE wind around 9 kt becoming SSE after midnight. Partly cloudy. Seas around 2 ft.

      Low: 68 °F

      ESE 9kt
      2ft

    • Friday

      Friday:SSE wind 9 to 13 kt. Mostly sunny. Seas around 2 ft.

      High: 73 °F

      SSE 13kt
      2ft

    • Friday Night

      Friday Night:SE wind around 12 kt. A slight chance of showers and thunderstorms after midnight.   Seas around 2 ft.

      Low: 67 °F

      SE 12kt
      2ft

    • Saturday

      Saturday:SSE wind 12 to 17 kt becoming NNW in the afternoon. A chance of showers and thunderstorms.   Seas 2 to 3 ft.

      High: 70 °F

      W 17kt
      2-3ft


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 8:45 am CST Jan 20, 2026
Forecast Valid: 8am CST Jan 20, 2026-6pm CST Jan 26, 2026

View Nearby Observations

Detailed Forecast


Today
E wind 9 to 12 kt. A slight chance of showers before 11am. Seas around 2 ft.
Tonight
ESE wind 9 to 12 kt becoming S after midnight. A chance of showers before 3am, then a slight chance of showers after 4am. Seas 1 to 2 ft.
Wednesday
S wind around 9 kt becoming SE in the afternoon. A chance of showers. Seas 2 to 3 ft.
Wednesday Night
SSE wind 5 to 7 kt. A chance of showers, mainly before midnight. Seas around 2 ft.
Thursday
ESE wind 5 to 9 kt. Mostly sunny. Seas 2 to 3 ft.
Thursday Night
ESE wind around 9 kt becoming SSE after midnight. Partly cloudy. Seas around 2 ft.
Friday
SSE wind 9 to 13 kt. Mostly sunny. Seas around 2 ft.
Friday Night
SE wind around 12 kt. A slight chance of showers and thunderstorms after midnight. Seas around 2 ft.
Saturday
SSE wind 12 to 17 kt becoming NNW in the afternoon. A chance of showers and thunderstorms. Seas 2 to 3 ft.

Winds and seas 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: 26.11°N 97.16°W
Last Update: 8:45 am CST Jan 20, 2026
Forecast Valid: 8am CST Jan 20, 2026-6pm CST Jan 26, 2026
  Forecast Discussion
  Get as KML Get as XML

RADAR & SATELLITE IMAGES

 Link to Satellite Data