For More Weather Information:

4NM ENE Port Isabel TX

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 7:18 am CDT Apr 11, 2026
Forecast Valid: 7am CDT Apr 11, 2026-6pm CDT Apr 17, 2026

Today

ESE wind 8 to 15 kt. A slight chance of showers and thunderstorms before 1pm, then a slight chance of showers between 1pm and 4pm. Seas around 2 ft.

Tonight

SE wind 14 to 16 kt. Mostly cloudy. Seas 2 to 4 ft.

Sunday

SE wind 16 to 18 kt. Mostly cloudy. Seas 2 to 4 ft.

Sunday Night

SE wind 14 to 16 kt. Mostly cloudy. Seas around 2 ft.

Monday

SE wind 13 to 17 kt. Mostly sunny. Seas 2 to 4 ft.

Monday Night

SE wind around 15 kt. Mostly cloudy. Seas around 2 ft.

Tuesday

SSE wind 15 to 18 kt. Mostly sunny. Seas 3 to 4 ft.

Tuesday Night

SE wind around 17 kt. Partly cloudy. Seas around 3 ft.

Wednesday

SSE wind 16 to 20 kt. Partly sunny. Seas around 3 ft.

Winds and seas 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.