For More Weather Information:

5NM NW Port Isabel TX

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 2:30 pm CDT May 18, 2026
Forecast Valid: 2pm CDT May 18, 2026-6pm CDT May 24, 2026

This Afternoon

SE wind 22 to 25 kt, with gusts as high as 35 kt. Mostly sunny. Seas 1 ft or less.

Tonight

SE wind 14 to 19 kt. Mostly cloudy. Seas 1 ft or less.

Tuesday

SE wind 14 to 16 kt. Partly sunny. Seas 1 ft or less.

Tuesday Night

SE wind 12 to 16 kt. A slight chance of showers and thunderstorms after 1am. Seas 1 ft or less.

Wednesday

SE wind 13 to 15 kt. Partly sunny. Seas 1 ft or less.

Wednesday Night

ESE wind around 13 kt. Mostly cloudy. Seas 1 ft or less.

Thursday

SSE wind 10 to 16 kt. A chance of showers and thunderstorms, mainly before 1pm. Seas 1 ft or less.

Thursday Night

SE wind 9 to 14 kt. A chance of showers and thunderstorms, mainly after 1am. Seas 1 ft or less.

Friday

SSE wind 8 to 16 kt. 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.