For More Weather Information:

Brownsville, TX Local Forecast Office

4NM ENE Port Isabel TX

Marine Point Forecast

[NOTICE]

Tonight
Low: 72 °F
SSE 12kt
3ft
Friday
High: 77 °F
SSE 12kt
2-3ft
Friday Night
Low: 67 °F
N 14kt
2-3ft
Saturday
High: 69 °F
N 25kt
3-4ft
Saturday Night
Low: 59 °F
N 25kt
4-6ft
Sunday
High: 61 °F
N 23kt
3-5ft
Sunday Night
Low: 59 °F
NNE 17kt
3-4ft
Monday
High: 64 °F
NNE 14kt
2-4ft
Monday Night
Low: 60 °F
NE 12kt
2-3ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 9:45 pm CST Jan 8, 2026
Forecast Valid: 9pm CST Jan 8, 2026-6pm CST Jan 15, 2026

View Nearby Observations

Detailed Forecast

Tonight

SSE wind around 12 kt. Partly cloudy. Seas around 3 ft.

Friday

SSE wind 10 to 12 kt. Partly sunny. Seas 2 to 3 ft.

Friday Night

SSE wind 6 to 14 kt becoming NNW after midnight. A chance of showers between midnight and 3am, then a chance of showers and thunderstorms after 3am. Seas 2 to 3 ft.

Saturday

N wind 16 to 25 kt, with gusts as high as 31 kt. A chance of showers. Seas 3 to 4 ft.

Saturday Night

N wind around 25 kt. A chance of showers. Seas 4 to 6 ft.

Sunday

N wind 18 to 23 kt. A slight chance of showers. Seas 3 to 5 ft.

Sunday Night

NNE wind 14 to 17 kt. A slight chance of showers. Seas 3 to 4 ft.

Monday

NNE wind 12 to 14 kt. A chance of showers. Seas 2 to 4 ft.

Monday Night

NE wind 9 to 12 kt. A chance of showers. Seas 2 to 3 ft.

*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.