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Brownsville, TX Local Forecast Office

4NM ENE Port Isabel TX

Marine Point Forecast

[NOTICE]
    • This Afternoon

      This Afternoon:N wind around 16 kt. Mostly sunny. Seas 1 to 2 ft.

      High: 72 °F

      N 16kt
      1-2ft

    • Tonight

      Tonight:N wind 17 to 22 kt. Mostly cloudy, then gradually becoming clear. Seas 2 ft building to 5 ft.

      Low: 59 °F

      N 22kt
      Waves Building5ft

    • Thursday

      Thursday:N wind 9 to 19 kt. Sunny. Seas 5 ft subsiding to 2 ft.

      High: 63 °F

      N 19kt
      5ftWaves Subsiding

    • Thursday Night

      Thursday Night:NNE wind 5 to 9 kt becoming S after midnight. Clear. Seas 1 to 2 ft.

      Low: 58 °F

      S 9kt
      1-2ft

    • Friday

      Friday:S wind 9 to 13 kt. Sunny. Seas 1 to 2 ft.

      High: 71 °F

      S 13kt
      1-2ft

    • Friday Night

      Friday Night:SSE wind 7 to 10 kt becoming ENE after midnight. Partly cloudy. Seas around 1 ft.

      Low: 64 °F

      SSE 10kt
      1ft

    • Saturday

      Saturday:NE wind 10 to 15 kt. A slight chance of showers after noon.   Seas 1 to 2 ft.

      High: 68 °F

      NE 15kt
      1-2ft

    • Saturday Night

      Saturday Night:NNE wind 12 to 14 kt. A slight chance of showers.   Seas 1 to 3 ft.

      Low: 59 °F

      NNE 14kt
      1-3ft

    • Sunday

      Sunday:NNE wind around 12 kt becoming E in the afternoon. Mostly sunny. Seas 2 to 3 ft.

      High: 64 °F

      NNE 12kt
      2-3ft


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 4:45 pm CST Jan 14, 2026
Forecast Valid: 4pm CST Jan 14, 2026-6pm CST Jan 20, 2026

View Nearby Observations

Detailed Forecast


This Afternoon
N wind around 16 kt. Mostly sunny. Seas 1 to 2 ft.
Tonight
N wind 17 to 22 kt. Mostly cloudy, then gradually becoming clear. Seas 2 ft building to 5 ft.
Thursday
N wind 9 to 19 kt. Sunny. Seas 5 ft subsiding to 2 ft.
Thursday Night
NNE wind 5 to 9 kt becoming S after midnight. Clear. Seas 1 to 2 ft.
Friday
S wind 9 to 13 kt. Sunny. Seas 1 to 2 ft.
Friday Night
SSE wind 7 to 10 kt becoming ENE after midnight. Partly cloudy. Seas around 1 ft.
Saturday
NE wind 10 to 15 kt. A slight chance of showers after noon. Seas 1 to 2 ft.
Saturday Night
NNE wind 12 to 14 kt. A slight chance of showers. Seas 1 to 3 ft.
Sunday
NNE wind around 12 kt becoming E in the afternoon. 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.
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ABOUT THIS FORECAST

Point Forecast: 26.11°N 97.16°W
Last Update: 4:45 pm CST Jan 14, 2026
Forecast Valid: 4pm CST Jan 14, 2026-6pm CST Jan 20, 2026
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