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Brownsville, TX Local Forecast Office

2NM N Port Isabel TX

Marine Point Forecast

[NOTICE]

This Afternoon
High: 77 °F
SSE 14kt
1-2ft
Tonight
Low: 64 °F
⇑NNE 28kt
3ft

Gale Warning
Monday
High: 64 °F
NNE 35kt
< 1ft

Gale Warning
Monday Night
Low: 47 °F
N 25kt
9ft
Tuesday
High: 58 °F
N 20kt
7ft
Tuesday Night
Low: 53 °F
N 11kt
5ft
Wednesday
High: 65 °F
E 7kt
3ft
Wednesday Night
Low: 61 °F
S 6kt
1-2ft
New Year's Day
High: 72 °F
S 12kt
1-2ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 3:00 pm CST Dec 28, 2025
Forecast Valid: 3pm CST Dec 28, 2025-6pm CST Jan 3, 2026

View Nearby Observations

Detailed Forecast

This Afternoon

SSE wind 12 to 14 kt. Mostly sunny. Seas 1 to 2 ft.

Tonight

Variable winds less than 5 kt becoming NNE 23 to 28 kt after midnight. Winds could gust as high as 36 kt. A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 5am. Seas 3 ft subsiding to 1 ft or less.

Monday

NNE wind 26 to 35 kt, with gusts as high as 42 kt. A chance of showers, mainly before 7am. Seas 1 ft or less.

Monday Night

N wind 20 to 25 kt. Mostly cloudy. Seas 9 ft subsiding to 1 ft or less.

Tuesday

N wind 12 to 20 kt. Mostly cloudy, then gradually becoming sunny. Seas 1 ft or less building to 7 ft.

Tuesday Night

N wind 5 to 11 kt. Mostly clear. Seas 1 ft or less building to 5 ft.

Wednesday

N wind 5 to 7 kt becoming ESE in the afternoon. Sunny. Seas 1 ft or less building to 3 ft.

Wednesday Night

ESE wind around 6 kt becoming S after midnight. Partly cloudy. Seas 1 to 2 ft.

New Year's Day

S wind 5 to 12 kt. Partly sunny. Seas 1 to 2 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.