August weather forecast
Castroville, TX

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Weather in August

The last month of the summer, August, is a sweltering month in Castroville, Texas, with an average temperature ranging between max 95.7°F (35.4°C) and min 74.3°F (23.5°C).

Temperature

August, recognised by an average high temperature of 95.7°F (35.4°C) and a low of 74.3°F (23.5°C), is Castroville's warmest month.

Heat index

The heat index value for August is computed to be a blazing hot 113°F (45°C). Note: Heat exhaustion and heat cramps are probable. Heatstroke can follow with prolonged activity.
Heat index data is primarily for areas with shade and subjected to light winds. Exposure to the direct sun might augment heat index values by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'feels like' or 'felt air temperature', is a measure that combines air temperature and relative humidity into a single value that indicates how hot the weather feels. A person's impression of weather can be swayed by numerous aspects, among them metabolic variations, pregnancy, and activity levels. It is noteworthy to mention that direct sunlight exposure can augment the felt temperature, leading to an increase in the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly relevant to babies and toddlers. Youngsters typically face more danger than adults since they sweat less. Their larger skin surface compared to their small bodies and heightened heat production from their activities augment their vulnerability.
In the face of high temperatures, the human body's reflex is to perspire, leveraging sweat evaporation for cooling. When air moisture content is high, the cooling process through evaporation is not as efficient, leading to an ineffective body cooling process and a feeling of overheating. Overheating dangers loom when the body's heat release mechanisms are overshadowed by excessive gain.

Humidity

With an average relative humidity of 58%, August is the least humid month in Castroville.

Rainfall

In Castroville, in August, it is raining for 9.3 days, with typically 1.54" (39mm) of accumulated precipitation. In Castroville, during the entire year, the rain falls for 138.8 days and collects up to 19.76" (502mm) of precipitation.

Snowfall

March through December are months without snowfall.

Daylight

In Castroville, the average length of the day in August is 13h and 10min.
On the first day of August, sunrise is at 6:56 am and sunset at 8:27 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 7:58 pm CDT.

Sunshine

The average sunshine in August is 9.8h.

UV index

The months with the highest UV index are June through August, with an average maximum UV index of 7. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for the average person.
Note: An average UV index of 7 in August transforms into this advice:
Ward off overexposure. Defence against solar harm is crucial. The Sun's UV radiation is most powerful between 10 a.m. and 4 p.m. To the extent possible, limit exposure to the direct sun during these hours. To cut down UV radiation exposure by about half, sport a wide-brim hat.
Updated: Jun 25, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the hottest time of year?

August proves to be the warmest month, recording an average peak temperature of 95.7°F (35.4°C) and a minimum temperature of 74.3°F (23.5°C).

How hot is it in August?

August temperatures vary between a high-temperature of 95.7°F (35.4°C) and a low-temperature of 74.3°F (23.5°C). The average heat index (a.k.a. 'feels like', 'real feel'), which combines relative humidity and air temperature, in August is computed to be 113°F (45°C).

What is the least humid month?

August is the least humid month, with an average relative humidity of 58%.

What is the average humidity in August?

In Castroville, the average relative humidity in August is 58%.

How much does it rain in August?

In Castroville, during August, the rain falls for 9.3 days and regularly aggregates up to 1.54" (39mm) of precipitation.

When it does not snow?

March through December are months without snowfall.

What is the average length of the day in August?

In August, the average day length in Castroville is 13h and 10min.

What time are sunrise and sunset in August?

On the first day of August, sunrise is at 6:56 am and sunset at 8:27 pm. On the last day of the month, sunrise is at 7:12 am and sunset at 7:58 pm CDT.

How long on average sun shines in August?

In August, the average sunshine duration is 9.8h.

When is the highest UV index?

June through August, with an average maximum UV index of 7, are months with the highest UV index.

How high is the UV index in August?

In Castroville, the average daily maximum UV index in August is 7. A UV Index of 6 to 7 symbolizes a high health risk from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
Castroville, TX

Average temperature in August - Castroville, TX
  • Average high temperature in August: 95.7°F

The warmest month (with the highest average high temperature) is August (95.7°F).
The month with the lowest average high temperature is January (61.3°F).

  • Average low temperature in August: 74.3°F

The month with the highest average low temperature is August (74.3°F).
The coldest month (with the lowest average low temperature) is January (43.3°F).

Average pressure in August
Castroville, TX

Average pressure in August - Castroville, TX
  • Average pressure in August: 29.91"Hg

The month with the highest atmospheric pressure is January (30.15"Hg).
The months with the lowest atmospheric pressure are May and June (29.89"Hg).

Average wind speed in August
Castroville, TX

Average wind speed in August - Castroville, TX
  • Average wind speed in August: 7mph

The windiest months (with the highest average wind speed) are April and May (9.1mph).
The calmest month (with the lowest average wind speed) is September (6.6mph).

Average humidity in August
Castroville, TX

Average humidity in August - Castroville, TX
  • Average humidity in August: 58%

The month with the highest relative humidity is May (73%).
The month with the lowest relative humidity is August (58%).

Average rainfall in August
Castroville, TX

Average rainfall in August - Castroville, TX
  • Average rainfall in August: 1.54"

The wettest month (with the highest rainfall) is May (2.99").
The driest month (with the least rainfall) is February (0.87").

Average rainfall days in August
Castroville, TX

Average rainfall days in August - Castroville, TX
  • Average rainfall days in August: 9.3 days

The month with the highest number of rainy days is May (16.7 days).
The month with the least rainy days is January (8.3 days).

Average snowfall in August
Castroville, TX

Average snowfall in August - Castroville, TX
  • Average snowfall in August: 0"

The month with the highest snowfall is January (0.12").
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0").

Average snowfall days in August
Castroville, TX

Average snowfall days in August - Castroville, TX
  • Average snowfall days in August: 0 days

The months with the highest number of snowfall days are January and February (0.4 days).
The months with the least snowfall days are March, April, May, June, July, August, September and October (0 days).

Average daylight in August /
Average sunshine in August
Castroville, TX

Average daylight in August / Average sunshine in August - Castroville, TX
  • Average daylight in August: 13h and 1min

The month with the longest days is June (Average daylight: 14h and 0min).
The month with the shortest days is December (Average daylight: 10h and 18min).

  • Average sunshine in August: 9h and 5min

The month with the most sunshine is July (Average sunshine: 10h and 12min).
The months with the least sunshine are November and December (Average sunshine: 5h and 18min).

Average sunshine days in August
Castroville, TX

Average sunshine days in August - Castroville, TX
  • Average sunshine days in August: 20.1 days

The month with the most sunshine days is January (20.7 days).
The month with the least sunshine days is May (11.8 days).

Average UV index in August
Castroville, TX

Average UV index in August - Castroville, TX
  • Average UV index in August: 7

The months with the highest UV index are June, July and August (UV index 7).
The month with the lowest UV index is December (UV index 3).

Average cloud cover in August
Castroville, TX

Average cloud cover in August - Castroville, TX
  • Average cloud cover in August: 23

The months with the most cloud cover are March and May (Cloud cover 47).
The month with the least cloud cover is August (Cloud cover 23).

Average visibility in August
Castroville, TX

Average visibility in August - Castroville, TX
  • Average visibility in August: 6mi

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

Castroville, Texas, USA

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