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Brownsville, TX Local Forecast Office

4NM ENE Port Isabel TX

Marine Point Forecast

[NOTICE]
    • This Afternoon

      This Afternoon:NNE wind 7 to 9 kt. Sunny. Seas around 2 ft.

      High: 63 °F

      NNE 9kt
      2ft

    • Tonight

      Tonight:ENE wind 5 to 12 kt becoming S after midnight. Clear. Seas around 2 ft.

      Low: 58 °F

      S 12kt
      2ft

    • Friday

      Friday:S wind 12 to 17 kt. Sunny. Seas 1 to 2 ft.

      High: 72 °F

      S 17kt
      1-2ft

    • Friday Night

      Friday Night:S wind 7 to 12 kt becoming NNW after midnight. Partly cloudy. Seas 1 to 2 ft.

      Low: 64 °F

      S 12kt
      1-2ft

    • Saturday

      Saturday:NE wind 12 to 17 kt. A chance of showers, mainly after noon.   Seas 1 to 3 ft.

      High: 67 °F

      NE 17kt
      1-3ft

    • Saturday Night

      Saturday Night:N wind 17 to 23 kt. A chance of showers, mainly before midnight.   Seas 2 ft building to 5 ft.

      Low: 55 °F

      N 23kt
      Waves Building5ft

    • Sunday

      Sunday:N wind 10 to 19 kt becoming ENE in the afternoon. Sunny. Seas 5 ft subsiding to 2 ft.

      High: 60 °F

      N 19kt
      5ftWaves Subsiding

    • Sunday Night

      Sunday Night:E wind 8 to 10 kt becoming SE in the evening. Mostly clear. Seas 2 to 3 ft.

      Low: 57 °F

      SE 10kt
      2-3ft

    • M.L.King Day

      M.L.King Day:SE wind 10 to 14 kt. Mostly sunny. Seas 2 to 3 ft.

      High: 68 °F

      SE 14kt
      2-3ft


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 4:00 pm CST Jan 15, 2026
Forecast Valid: 4pm CST Jan 15, 2026-6pm CST Jan 21, 2026

View Nearby Observations

Detailed Forecast


This Afternoon
NNE wind 7 to 9 kt. Sunny. Seas around 2 ft.
Tonight
ENE wind 5 to 12 kt becoming S after midnight. Clear. Seas around 2 ft.
Friday
S wind 12 to 17 kt. Sunny. Seas 1 to 2 ft.
Friday Night
S wind 7 to 12 kt becoming NNW after midnight. Partly cloudy. Seas 1 to 2 ft.
Saturday
NE wind 12 to 17 kt. A chance of showers, mainly after noon. Seas 1 to 3 ft.
Saturday Night
N wind 17 to 23 kt. A chance of showers, mainly before midnight. Seas 2 ft building to 5 ft.
Sunday
N wind 10 to 19 kt becoming ENE in the afternoon. Sunny. Seas 5 ft subsiding to 2 ft.
Sunday Night
E wind 8 to 10 kt becoming SE in the evening. Mostly clear. Seas 2 to 3 ft.
M.L.King Day
SE wind 10 to 14 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.
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ABOUT THIS FORECAST

Point Forecast: 26.11°N 97.16°W
Last Update: 4:00 pm CST Jan 15, 2026
Forecast Valid: 4pm CST Jan 15, 2026-6pm CST Jan 21, 2026
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