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4NM ENE Port Isabel TX

[NOTICE]

High and low forecast temperature values represent air temperature.

Last Update: 4:30 pm CST Feb 21, 2026
Forecast Valid: 4pm CST Feb 21, 2026-6pm CST Feb 27, 2026

This Afternoon

NNE wind 13 to 15 kt. Mostly sunny. Seas around 2 ft.

Tonight

N wind 16 to 21 kt increasing to 22 to 27 kt after midnight. Partly cloudy. Seas 2 ft building to 9 ft.

Sunday

N wind 22 to 27 kt decreasing to 15 to 20 kt in the afternoon. Winds could gust as high as 38 kt. Sunny. Seas 8 ft subsiding to 3 ft.

Sunday Night

NNE wind 12 to 18 kt. Mostly clear. Seas 8 ft subsiding to 4 ft.

Monday

NE wind 12 to 14 kt. Sunny. Seas 6 ft subsiding to 2 ft.

Monday Night

ENE wind 9 to 12 kt becoming SE after midnight. Mostly clear. Seas 3 to 5 ft.

Tuesday

SSE wind 9 to 17 kt. Mostly sunny. Seas 2 to 4 ft.

Tuesday Night

S wind 17 to 19 kt. Mostly clear. Seas 2 ft building to 5 ft.

Wednesday

S wind 19 to 23 kt. Sunny. Seas 2 ft building to 6 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.