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Brownsville, TX Local Forecast Office

4NM ENE Port Isabel TX

Marine Point Forecast

[NOTICE]

Monday
High: 84 °F
E 11kt
1ft
Monday Night
Low: 81 °F
E 11kt
1-2ft
Tuesday
High: 83 °F
E 11kt
1ft
Tuesday Night
Low: 80 °F
E 11kt
1-2ft
Wednesday
High: 83 °F
⇑E 12kt
1ft
Wednesday Night
Low: 81 °F
E 13kt
2ft
Thursday
High: 83 °F
E 12kt
2ft
Thursday Night
Low: 82 °F
E 12kt
2-3ft
Friday
High: 83 °F
SE 14kt
2ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 3:00 am CDT Jun 1, 2026
Forecast Valid: 3am CDT Jun 1, 2026-6pm CDT Jun 7, 2026

View Nearby Observations

Detailed Forecast

Monday

SSE wind 7 to 11 kt becoming E in the afternoon. Mostly sunny. Seas around 1 ft.

Monday Night

E wind 7 to 11 kt becoming SSE after midnight. Mostly cloudy. Seas 1 to 2 ft.

Tuesday

SE wind 5 to 11 kt becoming E in the morning. A slight chance of showers and thunderstorms between noon and 1pm. Seas around 1 ft.

Tuesday Night

E wind 6 to 11 kt. A chance of showers and thunderstorms after 1am. Seas 1 to 2 ft.

Wednesday

Variable winds less than 5 kt becoming E 7 to 12 kt in the morning. A slight chance of showers before 10am, then a slight chance of showers and thunderstorms between 10am and 1pm. Seas around 1 ft.

Wednesday Night

E wind 7 to 13 kt. Partly cloudy. Seas around 2 ft.

Thursday

E wind 6 to 12 kt. Mostly sunny. Seas around 2 ft.

Thursday Night

E wind around 12 kt becoming SSE after midnight. A slight chance of showers. Seas 2 to 3 ft.

Friday

SE wind 10 to 14 kt. A slight chance of showers, with thunderstorms also possible after 1pm. 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.