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Brownsville, TX Local Forecast Office

5NM NW Port Isabel TX

Marine Point Forecast

[NOTICE]

Today
High: 81 °F
ESE 17kt
< 1ft
Tonight
Low: 74 °F
ESE 14kt
< 1ft
Sunday
High: 80 °F
ESE 14kt
< 1ft
Sunday Night
Low: 72 °F
E 12kt
< 1ft
Monday
High: 80 °F
⇑ENE 11kt
< 1ft
Monday Night
Low: 72 °F
E 9kt
< 1ft
Tuesday
High: 79 °F
ESE 11kt
< 1ft
Tuesday Night
Low: 71 °F
E 9kt⇓
< 1ft
Wednesday
High: 80 °F
⇑E 11kt
< 1ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 6:45 am CDT Oct 24, 2026
Forecast Valid: 6am CDT Oct 24, 2026-6pm CDT Oct 30, 2026

View Nearby Observations

Detailed Forecast

Today

ESE wind 9 to 17 kt. A slight chance of showers before 7am. Seas 1 ft or less.

Tonight

ESE wind 10 to 14 kt. Increasing clouds. Seas 1 ft or less.

Sunday

ESE wind 11 to 14 kt. A slight chance of showers after 5pm. Seas 1 ft or less.

Sunday Night

E wind 5 to 12 kt. Mostly cloudy. Seas 1 ft or less.

Monday

Variable winds less than 5 kt becoming ENE 6 to 11 kt in the morning. Mostly sunny. Seas 1 ft or less.

Monday Night

E wind 5 to 9 kt. A chance of showers and thunderstorms. Seas 1 ft or less.

Tuesday

ESE wind 6 to 11 kt. A chance of showers and thunderstorms. Seas 1 ft or less.

Tuesday Night

E wind 5 to 9 kt becoming variable and less than 5 kt after midnight. A slight chance of showers after 1am. Seas 1 ft or less.

Wednesday

Variable winds less than 5 kt becoming E 6 to 11 kt in the morning. A slight chance of showers, with thunderstorms also possible after 1pm. Seas 1 ft or less.

Winds and waves 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.