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Brownsville, TX Local Forecast Office

5NM NW Port Isabel TX

Marine Point Forecast

[NOTICE]

Sunday
High: 78 °F
ESE 17kt
< 1ft

Small Craft Advisory
Sunday Night
Low: 73 °F
E 20kt
< 1ft

Small Craft Advisory
Monday
High: 76 °F
E 17kt
< 1ft
Monday Night
Low: 72 °F
E 14kt
< 1ft
Tuesday
High: 77 °F
E 10kt
< 1ft
Tuesday Night
Low: 72 °F
ESE 8kt⇓
< 1ft
Veterans Day
High: 77 °F
N 8kt
< 1ft
Wednesday Night
Low: 70 °F
⇑NNW 8kt
< 1ft
Thursday
High: 75 °F
N 16kt
< 1ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 3:00 am CST Nov 8, 2026
Forecast Valid: 3am CST Nov 8, 2026-6pm CST Nov 14, 2026

View Nearby Observations

Detailed Forecast

Sunday

ESE wind 12 to 17 kt. Showers and thunderstorms likely, then showers and possibly a thunderstorm after noon. Seas 1 ft or less.

Sunday Night

E wind 16 to 20 kt. A chance of showers and thunderstorms. Seas 1 ft or less.

Monday

E wind 14 to 17 kt. Showers and thunderstorms before noon, then showers likely and possibly a thunderstorm between noon and 2pm, then a chance of showers and thunderstorms after 2pm. Seas 1 ft or less.

Monday Night

E wind 7 to 14 kt. A slight chance of showers and thunderstorms, then a chance of showers after 9pm. Seas 1 ft or less.

Tuesday

E wind 7 to 10 kt. A chance of showers, mainly after noon. Seas 1 ft or less.

Tuesday Night

ESE wind 5 to 8 kt becoming variable and less than 5 kt. Mostly cloudy. Seas 1 ft or less.

Veterans Day

SSW wind 5 to 8 kt becoming NNE in the afternoon. A chance of showers and thunderstorms, mainly after noon. Seas 1 ft or less.

Wednesday Night

Variable winds less than 5 kt becoming NNW 5 to 8 kt after midnight. A chance of showers and thunderstorms. Seas 1 ft or less.

Thursday

N wind 9 to 16 kt. A slight chance of showers. 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.