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Brownsville, TX Local Forecast Office

5NM NW Port Isabel TX

Marine Point Forecast

[NOTICE]

This Afternoon
High: 90 °F
SSE 18kt
< 1ft

Small Craft Advisory
Tonight
Low: 82 °F
SSE 17kt
< 1ft

Small Craft Advisory
Saturday
High: 90 °F
SE 18kt
< 1ft
Saturday Night
Low: 83 °F
SE 16kt
< 1ft
Sunday
High: 88 °F
SE 16kt
< 1ft
Sunday Night
Low: 82 °F
SE 13kt
< 1ft
Monday
High: 88 °F
SE 16kt
< 1ft
Monday Night
Low: 82 °F
SE 14kt
< 1ft
Tuesday
High: 91 °F
SE 16kt
< 1ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 2:30 pm CDT Sep 11, 2026
Forecast Valid: 2pm CDT Sep 11, 2026-6pm CDT Sep 17, 2026

View Nearby Observations

Detailed Forecast

This Afternoon

SSE wind around 18 kt. Sunny. Seas 1 ft or less.

Tonight

SSE wind 12 to 17 kt. Mostly clear. Seas 1 ft or less.

Saturday

SE wind 11 to 18 kt. Sunny. Seas 1 ft or less.

Saturday Night

SE wind 10 to 16 kt. Partly cloudy. Seas 1 ft or less.

Sunday

SE wind 9 to 16 kt. A slight chance of showers before 10am, then a slight chance of showers and thunderstorms between 10am and 1pm. Seas 1 ft or less.

Sunday Night

SE wind 8 to 13 kt. Mostly clear. Seas 1 ft or less.

Monday

SE wind 7 to 16 kt. Sunny. Seas 1 ft or less.

Monday Night

SE wind 8 to 14 kt. Mostly clear. Seas 1 ft or less.

Tuesday

SE wind 8 to 16 kt. Sunny. Seas 1 ft or less.

*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.