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Brownsville, TX Local Forecast Office

3NM E Port Isabel TX

Marine Point Forecast

[NOTICE]

Tonight
Low: 75 °F
ESE 16kt
2ft
Sunday
High: 78 °F
ESE 17kt
2-3ft
Sunday Night
Low: 74 °F
E 19kt
3ft
Monday
High: 77 °F
E 17kt
2-3ft
Monday Night
Low: 73 °F
E 13kt
1-2ft
Tuesday
High: 77 °F
E 9kt
1ft
Tuesday Night
Low: 74 °F
ESE 7kt
1ft
Veterans Day
High: 76 °F
NNE 8kt
1ft
Wednesday Night
Low: 72 °F
⇑NNW 12kt
1ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 9:00 pm CST Nov 7, 2026
Forecast Valid: 9pm CST Nov 7, 2026-6pm CST Nov 14, 2026

View Nearby Observations

Detailed Forecast

Tonight

ESE wind 14 to 16 kt. A chance of showers and thunderstorms, mainly after 10pm. Seas around 2 ft.

Sunday

ESE wind 15 to 17 kt. A chance of showers and thunderstorms before 1pm, then showers likely and possibly a thunderstorm between 1pm and 5pm, then a chance of showers and thunderstorms after 5pm. Seas 2 to 3 ft.

Sunday Night

E wind 17 to 19 kt. A chance of showers and thunderstorms. Seas around 3 ft.

Monday

E wind 13 to 17 kt. Showers likely and possibly a thunderstorm. Seas 2 to 3 ft.

Monday Night

E wind 8 to 13 kt. A chance of showers and thunderstorms. Seas 1 to 2 ft.

Tuesday

E wind 7 to 9 kt. A chance of showers, with thunderstorms also possible after 9am. Seas around 1 ft.

Tuesday Night

ESE wind 5 to 7 kt becoming SSE after midnight. A slight chance of showers and thunderstorms after midnight. Seas around 1 ft.

Veterans Day

S wind 6 to 8 kt becoming NNW in the morning. A chance of showers and thunderstorms. Seas around 1 ft.

Wednesday Night

Variable winds less than 5 kt becoming NNW 7 to 12 kt after midnight. A chance of showers. Seas around 1 ft.

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.