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Brownsville, TX Local Forecast Office

5NM NW Port Isabel TX

Marine Point Forecast

[NOTICE]

This Afternoon
High: 87 °F
ESE 14kt
< 1ft
Tonight
Low: 81 °F
SSE 13kt
< 1ft
Independence Day
High: 88 °F
ESE 15kt
< 1ft
Saturday Night
Low: 81 °F
SSE 14kt
< 1ft
Sunday
High: 88 °F
SSE 15kt
< 1ft
Sunday Night
Low: 81 °F
SE 13kt
< 1ft
Monday
High: 88 °F
SSE 14kt
< 1ft
Monday Night
Low: 80 °F
SSE 12kt
< 1ft
Tuesday
High: 89 °F
SSE 14kt
< 1ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 3:30 pm CDT Jul 3, 2026
Forecast Valid: 3pm CDT Jul 3, 2026-6pm CDT Jul 9, 2026

View Nearby Observations

Detailed Forecast

This Afternoon

ESE wind around 14 kt. Mostly sunny. Seas 1 ft or less.

Tonight

SSE wind 9 to 13 kt. Mostly clear. Seas 1 ft or less.

Independence Day

ESE wind 8 to 15 kt. A slight chance of showers and thunderstorms before 3pm, then a slight chance of showers and thunderstorms after 4pm. Seas 1 ft or less.

Saturday Night

SSE wind 9 to 14 kt. A slight chance of showers and thunderstorms before 7pm. Seas 1 ft or less.

Sunday

SSE wind 9 to 15 kt. Sunny. Seas 1 ft or less.

Sunday Night

SE wind 9 to 13 kt. Partly cloudy. Seas 1 ft or less.

Monday

SSE wind 8 to 14 kt. Mostly sunny. Seas 1 ft or less.

Monday Night

SSE wind 8 to 12 kt. Partly cloudy. Seas 1 ft or less.

Tuesday

SSE wind 7 to 14 kt. Mostly sunny. 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.