August weather forecast and climate
Port Lavaca, TX

Weather in August

August, the last month of the summer, in Port Lavaca, is another hot month, with average temperature varying between 90.7°F (32.6°C) and 79.3°F (26.3°C).

Temperature

August is the warmest month, with an average high-temperature of 90.7°F (32.6°C) and an average low-temperature of 79.3°F (26.3°C).

Heat index

In August, the average heat index is evaluated at an extremely hot 110.3°F (43.5°C). Be wary: Heat exhaustion and heat cramps are highly anticipated. With continued activity, heatstroke is very likely.
Note that heat index values are valued for light wind and location in the shade. With exposure to direct sunlight, the heat index may be increased by up to 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'felt air temperature', 'real feel', 'feels like', or 'apparent temperature', is an index that combines air temperature and relative humidity to determine the human-perceived temperature equivalent. Additional factors like metabolic differences, pregnancy, clothing, and activity influence one's weather impression. Bear in mind that direct sunshine exposure increases weather impact, and may raise heat index by up to 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly important for children. Young children are generally more endangered than adults, as they usually less sweat. And also, due to larger skin surface relative to their small bodies and higher heat production as a result of their activity.
Perspiration is the human body's physiological response to high temperatures and is an attempt to lower body temperature through evaporation of sweat. With a lot of moisture in the air, the evaporation process is not as effective, and the body does not cool down as efficiently, creating a perception of overheating. If the body can not disperse the excessive heat and body temperature reaches conditions of hyperthermia, above 99.5°F (37.5°C) to 100.9°F (38.3°C), thermal conditions are potentially life-threatening.

Humidity

In Port Lavaca, the average relative humidity in August is 73%.

Rainfall

In Port Lavaca, in August, during 14 rainfall days, 2.4" (61mm) of precipitation is typically accumulated. Throughout the year, there are 156.8 rainfall days, and 23.5" (597mm) of precipitation is accumulated.

Snowfall

In Port Lavaca snow does not fall in February through December.

Ocean temperature

August is the month with the warmest seawater in Port Lavaca, with an average ocean temperature of 86.7°F (30.4°C).
Note: The surface water temperatures above 86°F (30°C) are arguably considered as unpleasant for swimming, and any intense water activity, as the refreshing effect of water is missing.

Daylight

The average length of the day in Port Lavaca is 13.1h.

Sunshine

In August, the average sunshine in Port Lavaca, Texas, is 10.3h.

UV index

May through August, with an average maximum UV index of 7, are months with the highest UV index. A UV Index estimate of 6 to 7 represents a high health hazard from the exposure to the Sun's UV rays for the average person.
Note: The daily maximum UV index of 7 interpret into the following advice:
Take precautions against overexposure. Protection against sun damage is needed. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Beware! The reflection of water and sand dramatically increases exposure to the UV rays.
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FAQ

What is the warmest month in Port Lavaca?

August is the warmest month in Port Lavaca, Texas, with an average high-temperature of 90.7°F (32.6°C) and an average low-temperature of 79.3°F (26.3°C).

What is the temperature in August in Port Lavaca?

The average high-temperature, in August, is 90.7°F (32.6°C), while the average low-temperature is 79.3°F (26.3°C). In August, the average heat index (a.k.a. 'felt air temperature', 'feels like'), which combines relative humidity and air temperature, is evaluated at 110.3°F (43.5°C).

What is the average humidity in August in Port Lavaca?

The average relative humidity in August in Port Lavaca is 73%.

How many days does it rain in August in Port Lavaca?

In Port Lavaca, in August, it is raining for 14 days, with typically 2.4" (61mm) of accumulated precipitation.

When it does not snow in Port Lavaca?

In Port Lavaca snow does not fall in February through December.

When is the ocean warmest in Port Lavaca?

August is the month with the warmest seawater, with an average ocean temperature of 86.7°F (30.4°C).

What is the ocean temperature in August in Port Lavaca?

In August, the average ocean temperature in Port Lavaca is 86.7°F (30.4°C). The surface water temperatures above 86°F (30°C) are arguably considered as unpleasant for swimming, and any intense water activity, as the refreshing effect of water is missing.

What is the average length of the day in August in Port Lavaca?

In August, the average length of the day is 13.1h.

How many hours of sunshine does Port Lavaca have in August?

In Port Lavaca, Texas, the average sunshine in August is 10.3h.

What is the month with the highest UV index in Port Lavaca?

May through August, with an average maximum UV index of 7, are months with the highest UV index in Port Lavaca, Texas.

How high is the UV index in August in Port Lavaca?

The average daily maximum UV index in August in Port Lavaca, Texas, is 7. A UV Index of 6 to 7 symbolizes a high health threat from unsafe exposure to the Sun's UV rays.

Average temperature in August
Port Lavaca, TX

Average temperature in August - Port Lavaca, TX
  • Average high temperature in August: 90.7°F

The warmest month (with the highest average high temperature) is August (90.7°F).
The month with the lowest average high temperature is January (62.2°F).

  • Average low temperature in August: 79.3°F

The month with the highest average low temperature is August (79.3°F).
The coldest month (with the lowest average low temperature) is January (49.6°F).

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Average pressure in August
Port Lavaca, TX

Average pressure in August - Port Lavaca, TX
  • Average pressure in August: 29.93"

The month with the highest atmospheric pressure is January (30.14").
The month with the lowest atmospheric pressure is June (29.91").

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Average wind speed in August
Port Lavaca, TX

Average wind speed in August - Port Lavaca, TX
  • Average wind speed in August: 8.8mph

The windiest month (with the highest average wind speed) is April (11.2mph).
The calmest month (with the lowest average wind speed) is September (8.3mph).

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Average humidity in August
Port Lavaca, TX

Average humidity in August - Port Lavaca, TX
  • Average humidity in August: 73%

Months with the highest relative humidity are February and March (79%).
The month with the lowest relative humidity is October (71%).

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Average rainfall in August
Port Lavaca, TX

Average rainfall in August - Port Lavaca, TX
  • Average rainfall in August: 2.4"

The wettest month (with the highest rainfall) is September (3.35").
The driest month (with the least rainfall) is February (0.87").

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Average rainfall days in August
Port Lavaca, TX

Average rainfall days in August - Port Lavaca, TX
  • Average rainfall days in August: 14 days

The month with the highest number of rainy days is September (19.8 days).
The month with the least rainy days is January (10.8 days).

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Average snowfall in August
Port Lavaca, TX

Average snowfall in August - Port Lavaca, TX
  • Average snowfall in August: 0"

The month with the highest snowfall is January (0.04").
Months with the least snowfall are February, March, April, May, June, July, August, September, October, November and December (0").

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Average snowfall days in August
Port Lavaca, TX

Average snowfall days in August - Port Lavaca, TX
  • Average snowfall days in August: 0 days

Months with the highest number of snowfall days are January and December (0.1 days).
Months with the least snowfall days are February, March, April, May, June, July, August, September, October and November (0 days).

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Average sea temperature in August
Port Lavaca, TX

Average sea temperature in August - Port Lavaca, TX
  • Average sea temperature in August: 86.7°F

The best month for swimming (with the highest average sea temperature) is August (86.7°F).
The coldest month (with the lowest average sea temperature) is January (60.1°F).

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Average daylight in August /
Average sunshine in August
Port Lavaca, TX

Average daylight in August / Average sunshine in August - Port Lavaca, TX
  • Average daylight in August: 13.1h

The month with the longest days is June (Average daylight: 14h).
The month with the shortest days is December (Average daylight: 10.3h).

  • Average sunshine in August: 10.3h

The month with the most sunshine is July (Average sunshine: 10.8h).
The month with the least sunshine is December (Average sunshine: 4.7h).

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Average sunshine days in August
Port Lavaca, TX

Average sunshine days in August - Port Lavaca, TX
  • Average sunshine days in August: 12 days

The month with the most sunshine days is January (17.5 days).
The month with the least sunshine days is September (8.5 days).

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Average UV index in August
Port Lavaca, TX

Average UV index in August - Port Lavaca, TX
  • Average UV index in August: 7

Months with the highest UV index are May, June, July and August (UV index 7).
Months with the lowest UV index are January and December (UV index 4).

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Average cloud cover in August
Port Lavaca, TX

Average cloud cover in August - Port Lavaca, TX
  • Average cloud cover in August: 25

The month with the most cloud cover is February (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 25).

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Average visibility in August
Port Lavaca, TX

Average visibility in August - Port Lavaca, TX
  • Average visibility in August: 6mi

Months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).

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