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Brownsville, TX Local Forecast Office

4NM ENE Port Isabel TX

Marine Point Forecast

[NOTICE]

Tonight
Low: 83 °F
ESE 17kt
2-4ft
Saturday
High: 85 °F
ESE 17kt
2-4ft
Saturday Night
Low: 83 °F
ESE 20kt
3-5ft
Sunday
High: 85 °F
SE 17kt
2-3ft
Sunday Night
Low: 82 °F
SSE 16kt
2-4ft
Monday
High: 85 °F
SSE 15kt
2ft
Monday Night
Low: 82 °F
SE 15kt
2-3ft
Tuesday
High: 84 °F
SSE 15kt
2ft
Tuesday Night
Low: 82 °F
SE 17kt
2-3ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 7:00 pm CDT Jun 12, 2026
Forecast Valid: 7pm CDT Jun 12, 2026-6pm CDT Jun 19, 2026

View Nearby Observations

Detailed Forecast

Tonight

ESE wind 14 to 17 kt. A chance of showers and thunderstorms, mainly after 4am. Seas 2 to 4 ft.

Saturday

ESE wind 14 to 17 kt. Showers likely, with thunderstorms also possible after 10am. Seas 2 to 4 ft.

Saturday Night

ESE wind 16 to 20 kt. A chance of showers and thunderstorms, mainly after 2am. Seas 3 to 5 ft.

Sunday

SE wind 15 to 17 kt. A chance of showers and thunderstorms before 1pm. Seas 2 to 3 ft.

Sunday Night

SSE wind around 16 kt. Showers likely and possibly a thunderstorm after 1am. Seas 2 to 4 ft.

Monday

SSE wind 13 to 15 kt. Showers likely and possibly a thunderstorm before 1pm, then a slight chance of showers and thunderstorms after 1pm. Seas around 2 ft.

Monday Night

SE wind 12 to 15 kt. A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Seas 2 to 3 ft.

Tuesday

SSE wind 12 to 15 kt. Showers likely and possibly a thunderstorm. Seas around 2 ft.

Tuesday Night

SE wind 13 to 17 kt. A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 1am. Seas 2 to 3 ft.

Winds and seas 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.