Port Isabel, TX Weather Forecast and Current Conditions

Day Sky High / Low Precip Wind Humidity
Sun
Jul 19 		Mostly Clear
Close Hourly 		-º / 79º 15% SSE 18 mph 82%
6pm Sunny 86º 1% SSE 17 mph 70%
7pm Sunny 85º 2% SSE 16 mph 73%
8pm Sunny 83º 2% SSE 15 mph 80%
9pm Mostly Clear 83º 2% SSE 14 mph 80%
10pm Mostly Clear 83º 4% SSE 13 mph 83%
11pm Mostly Clear 82º 5% SSE 13 mph 83%
Mon
Jul 20 		Mostly Sunny
View Hourly 		94º / 78º 7% SSE 19 mph 68%
12am Mostly Clear 82º 8% SSE 12 mph 85%
1am Mostly Clear 81º 14% SSE 12 mph 87%
2am Mostly Clear 81º 7% SSE 11 mph 88%
3am Mostly Clear 81º 7% SSE 11 mph 89%
4am Mostly Clear 81º 14% SSE 10 mph 88%
5am Mostly Clear 80º 15% S 9 mph 90%
6am Mostly Clear 80º 8% S 9 mph 90%
7am Mostly Sunny 80º 8% S 9 mph 91%
8am Mostly Sunny 81º 6% S 10 mph 87%
9am Sunny 84º 4% S 13 mph 78%
10am Mostly Sunny 87º 3% S 14 mph 70%
11am Sunny 89º 1% SSE 16 mph 63%
12pm Mostly Sunny 90º 1% SSE 16 mph 62%
1pm Sunny 91º 1% SSE 17 mph 60%
2pm Mostly Sunny 93º 1% SSE 18 mph 56%
3pm Partly Cloudy 92º 1% SSE 18 mph 57%
4pm Partly Cloudy 91º 1% SE 19 mph 60%
5pm Partly Cloudy 90º 1% SE 19 mph 63%
6pm Sunny 88º 2% SE 18 mph 67%
7pm Sunny 87º 3% SE 17 mph 69%
8pm Mostly Sunny 85º 5% SE 16 mph 76%
9pm Partly Cloudy 83º 6% SE 14 mph 81%
10pm Partly Cloudy 83º 6% SSE 13 mph 84%
11pm Partly Cloudy 82º 8% SSE 12 mph 85%
Tue
Jul 21 		Mostly Sunny
View Hourly 		93º / 77º 7% SSE 17 mph 68%
12am Partly Cloudy 82º 9% SSE 11 mph 87%
1am Partly Cloudy 82º 8% SSE 10 mph 87%
2am Partly Cloudy 81º 15% S 10 mph 88%
3am Mostly Clear 81º 15% S 9 mph 89%
4am Partly Cloudy 80º 13% S 8 mph 91%
5am Mostly Clear 80º 11% S 7 mph 90%
6am Partly Cloudy 79º 8% S 6 mph 93%
7am Partly Cloudy 79º 8% S 6 mph 93%
8am Partly Cloudy 81º 7% S 7 mph 89%
9am Partly Cloudy 84º 5% S 10 mph 79%
10am Sunny 87º 3% SSE 11 mph 68%
11am Sunny 90º 2% SSE 12 mph 62%
12pm Sunny 91º 2% SSE 14 mph 60%
1pm Sunny 92º 1% SSE 15 mph 58%
2pm Sunny 92º 1% SE 15 mph 59%
3pm Sunny 91º 2% SE 16 mph 60%
4pm Mostly Sunny 91º 2% SE 16 mph 61%
5pm Sunny 90º 2% SE 16 mph 63%
Wed
Jul 22 		Partly Cloudy 93º / 79º 10% SSE 15 mph 70%
Thu
Jul 23 		Mostly Sunny 91º / 80º 19% S 16 mph 71%
Fri
Jul 24 		Partly Cloudy 91º / 80º 7% SSE 18 mph 71%
Sat
Jul 25 		Mostly Sunny 91º / 80º 7% SE 16 mph 70%
Sun
Jul 26 		Partly Cloudy 91º / 80º 11% SSE 18 mph 70%

Weather Radar for Port Isabel, TX See Radar

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* Playback displays weather for the past 6 hours.

NOAA Weather Marine Forecast for Port Isabel, TX

This Afternoon
High : 87ºF
SE wind around 16 kt. Sunny. Seas 1 ft or less.
Tonight
Low : 80ºF
SSE wind 12 to 15 kt. Mostly clear. Seas 1 ft or less.
Monday
High : 88ºF
SE wind 11 to 16 kt. Sunny. Seas 1 ft or less.
Monday Night
Low : 80ºF
SSE wind 10 to 14 kt. Partly cloudy. Seas 1 ft or less.
Tuesday
High : 87ºF
SE wind 9 to 14 kt. Sunny. Seas 1 ft or less.
Tuesday Night
Low : 79ºF
SSE wind 8 to 13 kt. Mostly clear. Seas 1 ft or less.
Wednesday
High : 88ºF
SE wind 7 to 14 kt. Sunny. Seas 1 ft or less.
Wednesday Night
Low : 80ºF
SSE wind 9 to 12 kt. A slight chance of showers. Seas 1 ft or less.
Thursday
High : 88ºF
S wind 8 to 15 kt becoming SE in the afternoon. A slight chance of showers. Seas 1 ft or less.

NOAA Buoy Data Near Port Isabel, TX See Map

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    Wind Speed Forecast for Port Isabel, TX

    SundayMondayTuesday
    Wind Speed (MPH) 1713119141818131061115
    11pm3am7am11am3pm7pm11pm3am7am11am3pm7pm
    MPH 1713119141818131061115
    DIR SSESSESSESSSSESESSESSSSESE

    Current Weather Conditions In Port Isabel, TX

    As Of: 3 minutes ago

    • 86ºF
    • 96ºF
    • 17mph
    • 0º (SSE)
    • 24mph
    • Sunny
    • 5mi
    • 29.90"
    • 70%
    • 0ºF

    The weather right now in Port Isabel, TX is Sunny. The current temperature is 86°F, and the expected high and low for today, Sunday, July 19, 2026, are -° high temperature and 79°F low temperature. The wind is currently blowing at 17 miles per hour, and coming from the South Southeast. The wind is gusting to 24 mph. With the wind and the atmosphere the temperature feels like 96° Fahrenheit. Expected precipitation is 1 percent, with current humidity at 70 percent, and air pressure at 29.9 in. Visibility is 5 nautical miles. There are 1 current weather alert(s).

    Weather Alerts
    Special Weather Statement - 10:11pm Sat Jul 18 2026

    The combination of hot temperatures and humidity will produce heat
    index values between 108 and 111 degrees for several hours
    Sunday afternoon and early evening. A few locations may briefly
    experience heat index values above 111 degrees.

    If spending time outside on Sunday, drink plenty of water, wear
    light weight and light colored clothing, and take frequent breaks
    from the heat. Young children and pets should never be left
    unattended in vehicles.