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Brownsville, TX Local Forecast Office

4NM ENE Port Isabel TX

Marine Point Forecast

[NOTICE]

Today
High: 75 °F
E 12kt
2ft
Tonight
Low: 73 °F
E 11kt
2-4ft
Thursday
High: 76 °F
E 12kt
2-3ft
Thursday Night
Low: 72 °F
E 12kt
2-4ft
Friday
High: 76 °F
ESE 12kt
2ft
Friday Night
Low: 73 °F
ESE 12kt
2-4ft
Saturday
High: 76 °F
ESE 16kt
2-3ft
Saturday Night
Low: 74 °F
SE 16kt
2-4ft
Sunday
High: 78 °F
SSE 20kt
3-4ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 5:30 am CDT Apr 8, 2026
Forecast Valid: 5am CDT Apr 8, 2026-6pm CDT Apr 14, 2026

View Nearby Observations

Detailed Forecast

Today

E wind 7 to 12 kt. A chance of showers, mainly before noon. Seas around 2 ft.

Tonight

E wind 7 to 11 kt. Mostly cloudy. Seas 2 to 4 ft.

Thursday

E wind 6 to 12 kt. A slight chance of showers, then a chance of showers and thunderstorms after 1pm. Seas 2 to 3 ft.

Thursday Night

E wind 8 to 12 kt. A chance of showers and thunderstorms. Seas 2 to 4 ft.

Friday

ESE wind 7 to 12 kt. Showers likely and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms after 1pm. Seas around 2 ft.

Friday Night

ESE wind 9 to 12 kt. A slight chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and 1am, then a slight chance of showers and thunderstorms after 1am. Seas 2 to 4 ft.

Saturday

ESE wind 9 to 16 kt. A chance of showers and thunderstorms. Seas 2 to 3 ft.

Saturday Night

SE wind around 16 kt. Partly cloudy. Seas 2 to 4 ft.

Sunday

SSE wind 16 to 20 kt, with gusts as high as 26 kt. Partly sunny. Seas 3 to 4 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.