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Brownsville, TX Local Forecast Office

2NM N Port Isabel TX

Marine Point Forecast

[NOTICE]

Today
High: 81 °F
SSE 12kt
< 1ft
Tonight
Low: 79 °F
SSE 11kt
< 1ft
Friday
High: 83 °F
SSE 15kt
< 1ft
Friday Night
Low: 81 °F
SE 13kt
< 1ft
Saturday
High: 83 °F
SSE 14kt
< 1ft
Saturday Night
Low: 79 °F
ESE 12kt
< 1ft
Sunday
High: 82 °F
SE 10kt
< 1ft
Sunday Night
Low: 78 °F
E 8kt⇓
< 1ft
Memorial Day
High: 81 °F
⇑E 11kt
< 1ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 10:18 am CDT May 21, 2026
Forecast Valid: 10am CDT May 21, 2026-6pm CDT May 27, 2026

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Detailed Forecast

Today

SSE wind 9 to 12 kt. Showers and thunderstorms likely before 1pm, then showers likely and possibly a thunderstorm between 1pm and 2pm, then a chance of showers and thunderstorms after 2pm. Seas 1 ft or less.

Tonight

SSE wind 7 to 11 kt. A slight chance of showers and thunderstorms between 3am and 4am. Seas 1 ft or less.

Friday

SSE wind 8 to 15 kt. Mostly sunny. Seas 1 ft or less.

Friday Night

SE wind 9 to 13 kt. A chance of showers after 1am. Seas 1 ft or less.

Saturday

SSE wind 9 to 14 kt. A chance of showers, with thunderstorms also possible after 10am. Seas 1 ft or less.

Saturday Night

ESE wind 8 to 12 kt. Showers likely and possibly a thunderstorm. Seas 1 ft or less.

Sunday

SSE wind 6 to 10 kt becoming E in the afternoon. Showers likely and possibly a thunderstorm. Seas 1 ft or less.

Sunday Night

E wind 5 to 8 kt becoming variable and less than 5 kt after midnight. A chance of showers and thunderstorms. Seas 1 ft or less.

Memorial Day

Variable winds less than 5 kt becoming E 6 to 11 kt in the afternoon. A chance of showers and thunderstorms. 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.