For More Weather Information:

Brownsville, TX Local Forecast Office

10NM N Port Isabel TX

Marine Point Forecast

[NOTICE]

Thursday
High: 85 °F
SE 13kt
< 1ft
Thursday Night
Low: 80 °F
ESE 10kt⇓
1ft
Friday
High: 84 °F
⇑N 27kt
1ft
Friday Night
Low: 79 °F
N 30kt
1ft
Saturday
High: 73 °F
N 29kt
1ft
Saturday Night
Low: 68 °F
N 18kt
1ft
Sunday
High: 76 °F
N 18kt
1ft
Sunday Night
Low: 69 °F
NNE 13kt
1ft
Monday
High: 80 °F
NNE 12kt
1ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 1:46 am CDT Oct 15, 2026
Forecast Valid: 1am CDT Oct 15, 2026-6pm CDT Oct 21, 2026

View Nearby Observations

Detailed Forecast

Thursday

SE wind 10 to 13 kt. Sunny. Seas 1 ft or less.

Thursday Night

ESE wind 5 to 10 kt becoming variable and less than 5 kt after midnight. Mostly clear. Seas around 1 ft.

Friday

N wind 7 to 12 kt becoming N 17 to 27 kt in the morning. Winds could gust as high as 36 kt. A chance of showers before 1pm, then a chance of showers and thunderstorms between 1pm and 4pm, then a chance of showers after 4pm. Seas around 1 ft.

Friday Night

N wind 27 to 30 kt, with gusts as high as 38 kt. Mostly cloudy. Seas around 1 ft.

Saturday

N wind 22 to 29 kt, with gusts as high as 36 kt. Mostly cloudy. Seas around 1 ft.

Saturday Night

N wind 15 to 18 kt. Mostly cloudy. Seas around 1 ft.

Sunday

N wind 15 to 18 kt. Partly sunny. Seas around 1 ft.

Sunday Night

NNE wind 8 to 13 kt. Mostly cloudy. Seas around 1 ft.

Monday

NNE wind 9 to 12 kt. Partly sunny. 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.