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Brownsville, TX Local Forecast Office

5NM NW Port Isabel TX

Marine Point Forecast

[NOTICE]

This Afternoon
High: 74 °F
ESE 12kt
< 1ft
Tonight
Low: 66 °F
SSE 12kt
< 1ft
Saturday
High: 79 °F
SE 16kt
< 1ft
Saturday Night
Low: 70 °F
SSE 16kt
< 1ft
Sunday
High: 83 °F
S 19kt
< 1ft
Sunday Night
Low: 58 °F
⇑NNE 23kt
< 1ft
Monday
High: 62 °F
N 29kt
< 1ft
Monday Night
Low: 55 °F
NE 16kt
< 1ft
Tuesday
High: 67 °F
E 14kt
< 1ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 4:18 pm CDT Mar 13, 2026
Forecast Valid: 4pm CDT Mar 13, 2026-6pm CDT Mar 19, 2026

View Nearby Observations

Detailed Forecast

This Afternoon

ESE wind around 12 kt. Sunny. Seas 1 ft or less.

Tonight

SSE wind 9 to 12 kt. Clear. Seas 1 ft or less.

Saturday

SE wind 8 to 16 kt. Sunny. Seas 1 ft or less.

Saturday Night

SSE wind 14 to 16 kt. Mostly clear. Seas 1 ft or less.

Sunday

S wind 16 to 19 kt, with gusts as high as 25 kt. Sunny. Seas 1 ft or less.

Sunday Night

ENE wind 11 to 16 kt becoming NNE 18 to 23 kt after midnight. A slight chance of showers and thunderstorms between 1am and 4am, then a slight chance of showers after 4am. Seas 1 ft or less.

Monday

N wind 20 to 29 kt, with gusts as high as 36 kt. Mostly sunny. Seas 1 ft or less.

Monday Night

NE wind 7 to 16 kt. Partly cloudy. Seas 1 ft or less.

Tuesday

E wind 7 to 14 kt. Partly sunny. Seas 1 ft or less.

*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.