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Brownsville, TX Local Forecast Office

4NM ENE Port Isabel TX

Marine Point Forecast

[NOTICE]

Today
High: 80 °F
ENE 12kt
2ft
Tonight
Low: 78 °F
NE 13kt
2-3ft
Friday
High: 81 °F
SE 13kt
2ft
Friday Night
Low: 78 °F
SE 12kt
2ft
Saturday
High: 81 °F
ESE 10kt
1-2ft
Saturday Night
Low: 78 °F
ESE 9kt⇓
1-2ft
Sunday
High: 82 °F
⇑E 11kt
1-2ft
Sunday Night
Low: 78 °F
E 11kt
2ft
Monday
High: 80 °F
NNE 14kt
2ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 10:45 am CDT May 7, 2026
Forecast Valid: 10am CDT May 7, 2026-6pm CDT May 13, 2026

View Nearby Observations

Detailed Forecast

Today

ENE wind 9 to 12 kt. A slight chance of showers, mainly between 1pm and 3pm. Seas around 2 ft.

Tonight

NE wind 7 to 13 kt. A slight chance of showers and thunderstorms between 1am and 5am. Seas 2 to 3 ft.

Friday

E wind 6 to 13 kt becoming SSE in the morning. A slight chance of showers and thunderstorms before 10am, then a slight chance of showers between 10am and noon. Seas around 2 ft.

Friday Night

SE wind 8 to 12 kt. Mostly cloudy. Seas around 2 ft.

Saturday

ESE wind 5 to 10 kt. A chance of showers and thunderstorms, mainly before 1pm. Seas 1 to 2 ft.

Saturday Night

ESE wind 5 to 9 kt becoming variable and less than 5 kt after midnight. Mostly cloudy. Seas 1 to 2 ft.

Sunday

Variable winds less than 5 kt becoming E 6 to 11 kt in the afternoon. Partly sunny. Seas 1 to 2 ft.

Sunday Night

E wind 6 to 11 kt becoming NE after midnight. Mostly cloudy. Seas around 2 ft.

Monday

NNE wind 8 to 14 kt. Partly sunny. Seas around 2 ft.

Winds and seas higher in and near thunderstorms.

*Notices:

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.
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.