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Brownsville, TX Local Forecast Office

4NM ENE Port Isabel TX

Marine Point Forecast

[NOTICE]
    • This Afternoon

      This Afternoon:S wind 14 to 19 kt. Mostly sunny. Seas 1 to 2 ft.

      High: 72 °F

      S 19kt
      1-2ft

    • Tonight

      Tonight:S wind 9 to 14 kt becoming N after midnight. Mostly cloudy. Seas 1 to 2 ft.

      Low: 65 °F

      NNE 14kt
      1-2ft

    • Saturday

      Saturday:NNE wind 16 to 23 kt. Showers likely, mainly after 5pm.   Seas 2 to 4 ft.

      High: 66 °FFalling Temperatures

      NNE 23kt
      2-4ft

    • Saturday Night

      Saturday Night:N wind 20 to 24 kt. A chance of showers before midnight.   Seas 3 ft building to 6 ft.

      Low: 56 °F

      N 24kt
      Waves Building6ft

    • Sunday

      Sunday:N wind 9 to 19 kt. Sunny. Seas 6 ft subsiding to 2 ft.

      High: 59 °F

      N 19kt
      6ftWaves Subsiding

    • Sunday Night

      Sunday Night:ENE wind around 8 kt becoming SSE after midnight. Mostly clear. Seas around 2 ft.

      Low: 56 °F

      ENE 8kt
      2ft

    • M.L.King Day

      M.L.King Day:SE wind 8 to 13 kt. Mostly sunny. Seas 2 to 3 ft.

      High: 67 °F

      SE 13kt
      2-3ft

    • Monday Night

      Monday Night:ESE wind around 12 kt. A slight chance of showers.   Seas 2 to 3 ft.

      Low: 65 °F

      ESE 12kt
      2-3ft

    • Tuesday

      Tuesday:E wind 12 to 16 kt. A chance of showers.   Seas 2 to 4 ft.

      High: 68 °F

      E 16kt
      2-4ft


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 12:18 pm CST Jan 16, 2026
Forecast Valid: 12pm CST Jan 16, 2026-6pm CST Jan 22, 2026

View Nearby Observations

Detailed Forecast


This Afternoon
S wind 14 to 19 kt. Mostly sunny. Seas 1 to 2 ft.
Tonight
S wind 9 to 14 kt becoming N after midnight. Mostly cloudy. Seas 1 to 2 ft.
Saturday
NNE wind 16 to 23 kt. Showers likely, mainly after 5pm. Seas 2 to 4 ft.
Saturday Night
N wind 20 to 24 kt. A chance of showers before midnight. Seas 3 ft building to 6 ft.
Sunday
N wind 9 to 19 kt. Sunny. Seas 6 ft subsiding to 2 ft.
Sunday Night
ENE wind around 8 kt becoming SSE after midnight. Mostly clear. Seas around 2 ft.
M.L.King Day
SE wind 8 to 13 kt. Mostly sunny. Seas 2 to 3 ft.
Monday Night
ESE wind around 12 kt. A slight chance of showers. Seas 2 to 3 ft.
Tuesday
E wind 12 to 16 kt. A chance of showers. 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.
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ABOUT THIS FORECAST

Point Forecast: 26.11°N 97.16°W
Last Update: 12:18 pm CST Jan 16, 2026
Forecast Valid: 12pm CST Jan 16, 2026-6pm CST Jan 22, 2026
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