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Brownsville, TX Local Forecast Office

5NM NW Port Isabel TX

Marine Point Forecast

[NOTICE]

This Afternoon
High: 85 °F
NE 12kt
< 1ft
Tonight
Low: 78 °F
ENE 12kt
< 1ft
Saturday
High: 84 °F
NE 13kt
< 1ft
Saturday Night
Low: 77 °F
ENE 11kt
< 1ft
Sunday
High: 86 °F
⇑ENE 9kt
< 1ft
Sunday Night
Low: 78 °F
E 9kt
< 1ft
Monday
High: 87 °F
⇑E 10kt
< 1ft
Monday Night
Low: 79 °F
ESE 10kt
< 1ft
Tuesday
High: 86 °F
ENE 12kt
< 1ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 3:00 pm CDT Oct 3, 2025
Forecast Valid: 3pm CDT Oct 3, 2025-6pm CDT Oct 9, 2025

View Nearby Observations

Detailed Forecast

This Afternoon

NE wind around 12 kt. A slight chance of showers and thunderstorms after 4pm. Seas 1 ft or less.

Tonight

ENE wind 7 to 12 kt. A slight chance of showers and thunderstorms, mainly between 1am and 3am. Seas 1 ft or less.

Saturday

NE wind 7 to 13 kt. A chance of showers and thunderstorms before 4pm, then a slight chance of showers between 4pm and 5pm. Seas 1 ft or less.

Saturday Night

ENE wind 5 to 11 kt. A slight chance of showers between 7pm and 4am, then a slight chance of showers and thunderstorms after 4am. Seas 1 ft or less.

Sunday

Variable winds less than 5 kt becoming ENE 5 to 9 kt in the morning. A slight chance of showers and thunderstorms. Seas 1 ft or less.

Sunday Night

E wind 5 to 9 kt becoming SSE after midnight. Mostly clear. Seas 1 ft or less.

Monday

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

Monday Night

ESE wind 5 to 10 kt. A slight chance of showers. Seas 1 ft or less.

Tuesday

ENE wind 5 to 12 kt. A 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.