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Brownsville, TX Local Forecast Office

4NM ENE Port Isabel TX

Marine Point Forecast

[NOTICE]

This Afternoon
High: 84 °F
ESE 10kt
1-2ft
Tonight
Low: 79 °F
ESE 9kt
1-2ft
Wednesday
High: 84 °F
⇑ESE 10kt
1ft
Wednesday Night
Low: 80 °F
SE 10kt
1-2ft
Thursday
High: 84 °F
ESE 10kt
1ft
Thursday Night
Low: 80 °F
SE 10kt
1-2ft
Friday
High: 84 °F
ESE 10kt
1ft
Friday Night
Low: 81 °F
SE 9kt
2ft
Saturday
High: 84 °F
ESE 11kt
1ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 2:45 pm CDT Jun 24, 2025
Forecast Valid: 2pm CDT Jun 24, 2025-6pm CDT Jun 30, 2025

View Nearby Observations

Detailed Forecast

This Afternoon

ESE wind around 10 kt. Sunny. Seas 1 to 2 ft.

Tonight

ESE wind 5 to 9 kt becoming SSE after midnight. Mostly clear. Seas 1 to 2 ft.

Wednesday

Variable winds less than 5 kt becoming ESE 5 to 10 kt in the morning. A slight chance of showers and thunderstorms, mainly between 3pm and 4pm. Seas around 1 ft.

Wednesday Night

SE wind 7 to 10 kt. A slight chance of showers and thunderstorms after 1am. Seas 1 to 2 ft.

Thursday

ESE wind 6 to 10 kt. A slight chance of showers before 10am, then a slight chance of showers and thunderstorms between 10am and 4pm, then a slight chance of showers after 4pm. Seas around 1 ft.

Thursday Night

SE wind 7 to 10 kt. A slight chance of showers and thunderstorms after 1am. Seas 1 to 2 ft.

Friday

ESE wind 6 to 10 kt. A slight chance of showers and thunderstorms before 1pm. Seas around 1 ft.

Friday Night

SE wind around 9 kt. Mostly cloudy. Seas around 2 ft.

Saturday

ESE wind 7 to 11 kt. A chance of showers and thunderstorms. Seas around 1 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.