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Brownsville, TX Local Forecast Office

5NM NW Port Isabel TX

Marine Point Forecast

[NOTICE]

Today
High: 84 °F
SE 18kt
< 1ft
Tonight
Low: 76 °F
S 16kt
< 1ft
Wednesday
High: 84 °F
SSE 16kt
< 1ft
Wednesday Night
Low: 75 °F
SE 14kt
< 1ft
Thursday
High: 83 °F
SE 17kt
< 1ft
Thursday Night
Low: 76 °F
SE 15kt
< 1ft
Friday
High: 85 °F
SSE 16kt
< 1ft
Friday Night
Low: 66 °F
⇑N 22kt
< 1ft
Saturday
High: 71 °F
N 24kt
< 1ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 8:45 am CDT Apr 28, 2026
Forecast Valid: 8am CDT Apr 28, 2026-6pm CDT May 4, 2026

View Nearby Observations

Detailed Forecast

Today

SE wind 12 to 18 kt. Mostly sunny. Seas 1 ft or less.

Tonight

S wind 12 to 16 kt. Partly cloudy. Seas 1 ft or less.

Wednesday

SSE wind 12 to 16 kt. Mostly cloudy, then gradually becoming sunny. Seas 1 ft or less.

Wednesday Night

SE wind 10 to 14 kt. Mostly cloudy. Seas 1 ft or less.

Thursday

SE wind 9 to 17 kt. Partly sunny. Seas 1 ft or less.

Thursday Night

SE wind 12 to 15 kt. Mostly cloudy. Seas 1 ft or less.

Friday

SSE wind 12 to 16 kt. Mostly sunny. Seas 1 ft or less.

Friday Night

E wind 10 to 15 kt becoming N 17 to 22 kt after midnight. A slight chance of showers, then a chance of showers and thunderstorms after 1am. Seas 1 ft or less.

Saturday

N wind 21 to 24 kt, with gusts as high as 30 kt. A chance of showers, mainly before 1pm. Seas 1 ft or less.

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.