Port Lavaca, TX Weather Forecast and Current Conditions

Day Sky High / Low Precip Wind Humidity
Tue
Jul 21 		Mostly Sunny
Close Hourly 		86º / 81º 4% SW 13 mph 79%
6am Mostly Clear 83º 2% SW 10 mph 82%
7am Mostly Sunny 82º 2% SW 8 mph 84%
8am Mostly Sunny 83º 2% WSW 8 mph 80%
9am Mostly Sunny 84º 2% WSW 8 mph 81%
10am Mostly Sunny 84º 2% WSW 8 mph 76%
11am Mostly Sunny 85º 2% SW 7 mph 74%
12pm Sunny 86º 1% SSW 7 mph 73%
1pm Sunny 85º 5% SSW 7 mph 76%
2pm Mostly Sunny 85º 5% S 9 mph 76%
3pm Sunny 85º 5% S 10 mph 76%
4pm Mostly Sunny 86º 5% S 11 mph 74%
5pm Mostly Sunny 86º 5% S 12 mph 75%
6pm Sunny 86º 5% S 13 mph 76%
7pm Sunny 85º 5% S 13 mph 77%
8pm Partly Cloudy 84º 5% SSW 13 mph 79%
9pm Partly Cloudy 84º 5% SSW 12 mph 82%
10pm Partly Cloudy 84º 6% SSW 13 mph 84%
11pm Clear 84º 6% SSW 13 mph 84%
Wed
Jul 22 		Mostly Sunny
View Hourly 		88º / 81º 12% SW 14 mph 78%
12am Partly Cloudy 84º 6% SSW 13 mph 84%
1am Partly Cloudy 83º 6% SSW 13 mph 85%
2am Partly Cloudy 83º 6% SW 13 mph 85%
3am Partly Cloudy 83º 7% SW 13 mph 86%
4am Partly Cloudy 83º 7% SW 13 mph 87%
5am Partly Cloudy 83º 7% WSW 13 mph 88%
6am Partly Cloudy 82º 13% WSW 12 mph 87%
7am Partly Cloudy 82º 13% WSW 11 mph 89%
8am Mostly Sunny 82º 8% W 10 mph 90%
9am Mostly Sunny 83º 9% W 10 mph 87%
10am Sunny 84º 7% W 9 mph 81%
11am Mostly Sunny 85º 6% W 8 mph 76%
12pm Mostly Sunny 86º 5% WSW 7 mph 73%
1pm Mostly Sunny 87º 3% SW 7 mph 72%
2pm Partly Cloudy 87º 4% SSW 9 mph 74%
3pm Partly Cloudy 87º 5% SSW 11 mph 75%
4pm Partly Cloudy 88º 5% SSW 12 mph 74%
5pm Partly Cloudy 88º 5% SSW 13 mph 74%
6pm Mostly Sunny 87º 5% SSW 14 mph 76%
7pm Partly Cloudy 87º 7% SSW 14 mph 77%
8pm Partly Cloudy 86º 7% SSW 13 mph 79%
9pm Partly Cloudy 85º 7% SSW 12 mph 81%
10pm Partly Cloudy 85º 7% SW 13 mph 81%
11pm Partly Cloudy 85º 7% SW 12 mph 81%
Thu
Jul 23 		Partly Cloudy
View Hourly 		88º / 82º 24% SW 13 mph 74%
12am Partly Cloudy 85º 6% SW 11 mph 81%
1am Partly Cloudy 85º 9% SW 11 mph 80%
2am Partly Cloudy 85º 9% SW 10 mph 81%
3am Partly Cloudy 84º 8% WSW 10 mph 82%
4am Partly Cloudy 84º 8% WSW 10 mph 81%
5am Partly Cloudy 84º 20% WSW 9 mph 81%
Fri
Jul 24 		Partly Cloudy 87º / 83º 24% S 15 mph 77%
Sat
Jul 25 		Partly Cloudy 87º / 83º 5% S 13 mph 74%
Sun
Jul 26 		Mostly Sunny 87º / 82º 8% S 13 mph 76%
Mon
Jul 27 		Sunny 87º / 83º 5% S 14 mph 77%
Tue
Jul 28 		Sunny 87º / 83º 5% S 15 mph 78%

Weather Radar for Port Lavaca, TX See Radar

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* Playback displays weather for the past 6 hours.

NOAA Weather Marine Forecast for Port Lavaca, TX

Today
High : 86ºF
S wind 5 to 10 kt. Sunny. Seas around 1 ft.
Tonight
Low : 83ºF
S wind 10 to 15 kt. Partly cloudy. Seas around 1 ft.
Wednesday
High : 87ºF
WSW wind around 10 kt becoming SSW in the afternoon. Mostly sunny. Seas around 1 ft.
Wednesday Night
Low : 83ºF
SSW wind 10 to 15 kt. Partly cloudy. Seas around 1 ft.
Thursday
High : 86ºF
SW wind 10 to 15 kt. Mostly sunny. Seas around 1 ft.
Thursday Night
Low : 84ºF
S wind 10 to 15 kt. Partly cloudy. Seas around 2 ft.
Friday
High : 86ºF
S wind around 10 kt. Mostly sunny. Seas 1 to 2 ft.
Friday Night
Low : 84ºF
SSE wind 10 to 15 kt. A chance of showers. Seas 1 to 2 ft.
Saturday
High : 86ºF
S wind 10 to 15 kt. A chance of showers. Seas around 2 ft.

NOAA Buoy Data Near Port Lavaca, TX See Map

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    Wind Speed Forecast for Port Lavaca, TX

    TuesdayWednesdayThursday
    Wind Speed (MPH) 10891313131299141310
    11am3pm7pm11pm3am7am11am3pm7pm11pm3am7am
    MPH 10891313131299141310
    DIR SWWSWSSSSWSWWSWWSSWSSWSWSW

    Current Weather Conditions In Port Lavaca, TX

    As Of: 3 minutes ago

    • 83ºF
    • 92ºF
    • 10mph
    • 0º (SW)
    • 10mph
    • Mostly Clear
    • 10mi
    • 29.90"
    • 82%
    • 0ºF

    The weather right now in Port Lavaca, TX is Mostly Clear. The current temperature is 83°F, and the expected high and low for today, Tuesday, July 21, 2026, are 86° high temperature and 81°F low temperature. The wind is currently blowing at 10 miles per hour, and coming from the Southwest. The wind is gusting to 10 mph. With the wind and the atmosphere the temperature feels like 92° Fahrenheit. Expected precipitation is 2 percent, with current humidity at 82 percent, and air pressure at 29.9 in. Visibility is 10 nautical miles. There are 1 current weather alert(s).

    Weather Alerts
    Heat Advisory - 1:01am Tue Jul 21 2026

    ...HEAT ADVISORY REMAINS IN EFFECT FROM 11 AM THIS MORNING TO 8 PM CDT THIS EVENING...

    WHAT: Heat index values up to 108 expected.

    WHERE: Portions of south central and southeast Texas.

    WHEN: From 11 AM this morning to 8 PM CDT this evening.

    IMPACTS: Hot temperatures and high humidity will increase the
    risk for heat-related illnesses to occur, particularly for those
    working or participating in outdoor activities.

    PRECAUTIONARY / PREPAREDNESS ACTIONS:

    Drink plenty of fluids, stay in an air-conditioned room, stay out of
    the sun, and check up on relatives and neighbors.

    Take extra precautions when outside. Wear lightweight and loose
    fitting clothing. Try to limit strenuous activities to early morning
    or evening. Take action when you see symptoms of heat exhaustion and
    heat stroke.

    To reduce risk during outdoor work, the Occupational Safety and
    Health Administration recommends scheduling frequent rest breaks in
    shaded or air conditioned environments. Anyone overcome by heat
    should be moved to a cool and shaded location. Heat stroke is an
    emergency! Call 9 1 1.

    &&