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Brownsville, TX Local Forecast Office

4NM ENE Port Isabel TX

Marine Point Forecast

[NOTICE]
    • This Afternoon

      This Afternoon:NNE wind around 21 kt. Mostly cloudy. Seas around 6 ft.

      High: 66 °F

      NNE 21kt
      6ft

    • Tonight

      Tonight:N wind 19 to 24 kt, with gusts as high as 30 kt. Mostly cloudy during the early evening, then gradual clearing. Seas 4 to 6 ft.

      Low: 55 °F

      N 24kt
      4-6ft

    • Sunday

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

      High: 60 °F

      N 19kt
      6ftWaves Subsiding

    • Sunday Night

      Sunday Night:NE wind 5 to 7 kt becoming SSE after midnight. Mostly clear. Seas 1 to 2 ft.

      Low: 55 °F

      NE 7kt
      1-2ft

    • M.L.King Day

      M.L.King Day:SE wind 6 to 13 kt. Sunny. Seas around 2 ft.

      High: 67 °F

      SE 13kt
      2ft

    • Monday Night

      Monday Night:ESE wind 11 to 13 kt. Increasing clouds. Seas 1 to 2 ft.

      Low: 64 °F

      ESE 13kt
      1-2ft

    • Tuesday

      Tuesday:E wind 11 to 15 kt. A slight chance of showers.   Seas 2 to 3 ft.

      High: 68 °F

      E 15kt
      2-3ft

    • Tuesday Night

      Tuesday Night:SSE wind 11 to 13 kt. A chance of showers.   Seas around 2 ft.

      Low: 64 °F

      SSE 13kt
      2ft

    • Wednesday

      Wednesday:SSE wind 9 to 12 kt. A chance of showers and thunderstorms.   Seas 2 to 4 ft.

      High: 70 °F

      SSE 12kt
      2-4ft


High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 2:30 pm CST Jan 17, 2026
Forecast Valid: 2pm CST Jan 17, 2026-6pm CST Jan 23, 2026

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Detailed Forecast


This Afternoon
NNE wind around 21 kt. Mostly cloudy. Seas around 6 ft.
Tonight
N wind 19 to 24 kt, with gusts as high as 30 kt. Mostly cloudy during the early evening, then gradual clearing. Seas 4 to 6 ft.
Sunday
N wind 9 to 19 kt. Sunny. Seas 6 ft subsiding to 2 ft.
Sunday Night
NE wind 5 to 7 kt becoming SSE after midnight. Mostly clear. Seas 1 to 2 ft.
M.L.King Day
SE wind 6 to 13 kt. Sunny. Seas around 2 ft.
Monday Night
ESE wind 11 to 13 kt. Increasing clouds. Seas 1 to 2 ft.
Tuesday
E wind 11 to 15 kt. A slight chance of showers. Seas 2 to 3 ft.
Tuesday Night
SSE wind 11 to 13 kt. A chance of showers. Seas around 2 ft.
Wednesday
SSE wind 9 to 12 kt. A chance of showers and thunderstorms. Seas 2 to 4 ft.

Winds and seas higher in and near thunderstorms Wednesday and Wednesday night.

*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: 2:30 pm CST Jan 17, 2026
Forecast Valid: 2pm CST Jan 17, 2026-6pm CST Jan 23, 2026
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