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Brownsville, TX Local Forecast Office

5NM NW Port Isabel TX

Marine Point Forecast

[NOTICE]

Friday
High: 84 °F
SE 15kt
< 1ft
Friday Night
Low: 64 °F
N 20kt
< 1ft

Small Craft Advisory
Saturday
High: 71 °F
N 23kt
< 1ft

Small Craft Advisory
Saturday Night
Low: 67 °F
NNE 17kt
< 1ft

Small Craft Advisory
Sunday
High: 76 °F
ENE 12kt
< 1ft
Sunday Night
Low: 70 °F
E 11kt
< 1ft
Monday
High: 79 °F
SE 15kt
< 1ft
Monday Night
Low: 74 °F
SSE 15kt
< 1ft
Tuesday
High: 83 °F
SSE 19kt
< 1ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 4:18 am CDT May 1, 2026
Forecast Valid: 4am CDT May 1, 2026-6pm CDT May 7, 2026

View Nearby Observations

Detailed Forecast

Friday

SE wind 9 to 15 kt. Increasing clouds. Seas 1 ft or less.

Friday Night

SE wind 12 to 20 kt becoming N in the evening. Showers and thunderstorms likely, mainly before 4am, then showers likely and possibly a thunderstorm after 5am. Seas 1 ft or less.

Saturday

N wind 20 to 23 kt. A chance of showers before 1pm. Seas 1 ft or less.

Saturday Night

NNE wind 8 to 17 kt. Partly cloudy. Seas 1 ft or less.

Sunday

ENE wind 8 to 12 kt. Mostly sunny. Seas 1 ft or less.

Sunday Night

E wind 9 to 11 kt becoming SE after midnight. Mostly cloudy. Seas 1 ft or less.

Monday

SE wind 8 to 15 kt. Partly sunny. Seas 1 ft or less.

Monday Night

SSE wind 13 to 15 kt. Mostly cloudy. Seas 1 ft or less.

Tuesday

SSE wind 14 to 19 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.