For More Weather Information:

4NM ENE Port Isabel TX

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 12:45 am CDT Oct 18, 2026
Forecast Valid: 12am CDT Oct 18, 2026-6pm CDT Oct 24, 2026

Overnight

N wind 13 to 16 kt. Mostly cloudy. Seas around 3 ft.

Sunday

NNW wind 15 to 17 kt. A chance of showers, mainly after 1pm. Seas around 3 ft.

Sunday Night

N wind 8 to 12 kt. A chance of showers, mainly before 9pm. Seas 2 to 3 ft.

Monday

N wind 10 to 13 kt. A chance of showers, mainly after noon. Seas 2 to 3 ft.

Monday Night

ENE wind 10 to 12 kt. A slight chance of showers before 1am. Seas around 3 ft.

Tuesday

NE wind 10 to 14 kt. A chance of showers, mainly after 1pm. Seas around 3 ft.

Tuesday Night

ENE wind 8 to 13 kt. A chance of showers, with thunderstorms also possible after 1am. Seas around 3 ft.

Wednesday

ENE wind 9 to 12 kt. A chance of showers and thunderstorms, mainly before 1pm. Seas around 3 ft.

Wednesday Night

ENE wind 6 to 12 kt. Mostly clear. Seas 2 to 3 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.