For More Weather Information:

Brownsville, TX Local Forecast Office

5NM NW Port Isabel TX

Marine Point Forecast

[NOTICE]

Overnight
Low: 78 °F
SE 7kt⇓
< 1ft
Wednesday
High: 86 °F
⇑ESE 12kt
< 1ft
Wednesday Night
Low: 78 °F
SE 11kt
< 1ft
Thursday
High: 86 °F
ESE 12kt
< 1ft
Thursday Night
Low: 79 °F
SE 11kt
< 1ft
Friday
High: 86 °F
ESE 12kt
< 1ft
Friday Night
Low: 79 °F
SE 10kt
< 1ft
Saturday
High: 86 °F
ESE 13kt
< 1ft
Saturday Night
Low: 79 °F
ESE 12kt
< 1ft

High and low forecast temperature values represent air temperature.

Associated Zone Forecast which includes this point

Last Update: 10:45 pm CDT Jun 24, 2025
Forecast Valid: 11pm CDT Jun 24, 2025-6pm CDT Jul 1, 2025

View Nearby Observations

Detailed Forecast

Overnight

SE wind 5 to 7 kt becoming variable and less than 5 kt after midnight. Mostly clear. Seas 1 ft or less.

Wednesday

Variable winds less than 5 kt becoming ESE 7 to 12 kt in the morning. A slight chance of showers and thunderstorms between 1pm and 4pm. Seas 1 ft or less.

Wednesday Night

SE wind 5 to 11 kt. A slight chance of showers after 1am. Seas 1 ft or less.

Thursday

ESE wind 5 to 12 kt. A slight chance of showers before 10am, then a slight chance of showers and thunderstorms between 10am and 4pm, then a slight chance of showers after 4pm. Seas 1 ft or less.

Thursday Night

SE wind 5 to 11 kt. Mostly cloudy. Seas 1 ft or less.

Friday

ESE wind 5 to 12 kt. A slight chance of showers before 10am, then a slight chance of showers and thunderstorms between 10am and 1pm. Seas 1 ft or less.

Friday Night

SE wind 6 to 10 kt. Mostly cloudy. Seas 1 ft or less.

Saturday

ESE wind 5 to 13 kt. A chance of showers and thunderstorms. Seas 1 ft or less.

Saturday Night

ESE wind 7 to 12 kt. A slight chance of showers and thunderstorms after 1am. 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.