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Brownsville, TX Local Forecast Office

4NM E Port Isabel TX

Marine Point Forecast

[NOTICE]

This Afternoon
High: 76 °F
NNE 8kt
1ft
Tonight
Low: 71 °F
SE 12kt
1ft
Saturday
High: 76 °F
SE 15kt
1-2ft
Saturday Night
Low: 73 °F
SE 17kt
2ft
Sunday
High: 78 °F
SSE 16kt
2-3ft
Sunday Night
Low: 68 °F
NNW 15kt
2ft
Monday
High: 72 °F
N 23kt
2-3ft
Monday Night
Low: 67 °F
N 20kt
3ft
Tuesday
High: 72 °F
N 19kt
3ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 12:26 pm CST Nov 13, 2026
Forecast Valid: 12pm CST Nov 13, 2026-6pm CST Nov 19, 2026

View Nearby Observations

Detailed Forecast

This Afternoon

NNE wind around 8 kt becoming ENE. Sunny. Seas around 1 ft.

Tonight

SE wind 7 to 12 kt. Increasing clouds. Seas around 1 ft.

Saturday

SE wind 13 to 15 kt. Mostly sunny. Seas 1 to 2 ft.

Saturday Night

SE wind 14 to 17 kt. Mostly clear. Seas around 2 ft.

Sunday

SSE wind 11 to 16 kt. A slight chance of showers after noon. Seas 2 to 3 ft.

Sunday Night

SSE wind 8 to 15 kt becoming NW after midnight. A chance of showers before 9pm, then a chance of showers and thunderstorms between 9pm and midnight, then showers likely and possibly a thunderstorm after midnight. Seas around 2 ft.

Monday

N wind 18 to 23 kt. A chance of showers and thunderstorms before 9am, then a chance of showers between 9am and noon. Seas 2 to 3 ft.

Monday Night

N wind around 20 kt. A slight chance of showers. Seas around 3 ft.

Tuesday

N wind 14 to 19 kt. A slight chance of showers. Seas around 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.