Contents
- Weather in August
- Frequently asked questions
- Average temperature in August
- Average pressure in August
- Average wind speed in August
- Average humidity in August
- Average rainfall in August
- Average rainfall days in August
- Average snowfall in August
- Average snowfall days in August
- Average daylight in August
- Average sunshine in August
- Average sunshine days in August
- Average UV index in August
- Average cloud cover in August
- Average visibility in August
Weather in August
Temperature
August, marked by an average high-temperature of 96.6°F (35.9°C) and a low-temperature of 75.7°F (24.3°C), is the warmest month in San Antonio, Texas.Heat index
August's heat index is estimated at a life-threatening hot 116.6°F (47°C). Prudent: Heat cramps and heat exhaustion are likely. Heatstroke becomes imminent with sustained exertion.Metrics for the heat index primarily focus on shaded spots and light wind conditions. Exposure to the sun directly might heighten the heat index by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'apparent temperature' or 'real feel', is calculated by taking the relative humidity value for a specific location and factoring it into the air temperature reading. Elements such as metabolic variations, being pregnant, and physical activity can impact one's weather perception. Consider the fact that direct sun exposure can influence how hot one feels, potentially raising the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values hold particular importance for children. Younglings are generally more in peril than adults due to their reduced perspiration. Coupled with a larger skin surface relative to their tiny bodies and greater heat production because of their activity, they become more at risk.
One way the human body deals with excessive warmth is by perspiring and allowing sweat to evaporate. Under high air temperature and high humidity (high heat index) conditions, the body's ability to perspire is compromised, increasing the sensation of heat. When the body's heat gain surpasses its removal capacity, body temperature starts to climb, leading to potential heat-related ailments.
Humidity
The least humid month is August, with an average relative humidity of 59%.Rainfall
In August, in San Antonio, the rain falls for 9.8 days. Throughout August, 1.5" (38mm) of precipitation is accumulated. Throughout the year, in San Antonio, there are 144.5 rainfall days, and 22.6" (574mm) of precipitation is accumulated.Snowfall
In San Antonio, snow does not fall in March through November.Daylight
In August, the average length of the day in San Antonio, Texas, is 13h and 10min.On the first day of the month, sunrise is at 6:54 am and sunset at 8:26 pm. On the last day of August, in San Antonio, sunrise is at 7:11 am and sunset at 7:56 pm CDT.
Sunshine
In August, the average sunshine in San Antonio is 9.9h.UV index
June through August, with an average maximum UV index of 7, are months with the highest UV index. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: The UV index of 7 during August leads to these advisories:
Resist extreme sun exposure. Guarding against solar damage is essential. Minimize exposure to direct sunlight and seek shade from 10 a.m. to 4 p.m., when UV radiation is most intense, but remember that shade structures may not offer complete protection. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses.
Frequently asked questions
What month is the hottest in San Antonio?
How hot does it get in San Antonio in August?
What is the least humid month in San Antonio?
What is the average humidity in August in San Antonio?
How much does it rain in San Antonio in August?
When it does not snow in San Antonio?
What is the average length of the day in August in San Antonio?
When are sunrise and sunset in August in San Antonio?
How long on average sun shines in August in San Antonio?
What are the months with the highest UV index in San Antonio?
How high is the UV index in August in San Antonio?
Average temperature in August
San Antonio, TX
- Average high temperature in August: 96.6°F
The warmest month (with the highest average high temperature) is August (96.6°F).
The month with the lowest average high temperature is January (61.7°F).
- Average low temperature in August: 75.7°F
The month with the highest average low temperature is August (75.7°F).
The coldest month (with the lowest average low temperature) is January (44.2°F).
Average pressure in August
San Antonio, TX
- Average pressure in August: 29.91"Hg
The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.89"Hg).
Average wind speed in August
San Antonio, TX
- Average wind speed in August: 7.1mph
The windiest month (with the highest average wind speed) is May (9mph).
The calmest month (with the lowest average wind speed) is September (6.5mph).
Average humidity in August
San Antonio, TX
- Average humidity in August: 59%
The month with the highest relative humidity is May (73%).
The month with the lowest relative humidity is August (59%).
Average rainfall in August
San Antonio, TX
- Average rainfall in August: 1.5"
The wettest month (with the highest rainfall) is May (3.66").
The driest month (with the least rainfall) is February (0.98").
Average rainfall days in August
San Antonio, TX
- Average rainfall days in August: 9.8 days
The month with the highest number of rainy days is September (17 days).
The month with the least rainy days is January (9.1 days).
Average snowfall in August
San Antonio, TX
- Average snowfall in August: 0"
The months with the highest snowfall are January and February (0.08").
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0").
Average snowfall days in August
San Antonio, TX
- Average snowfall days in August: 0 days
The months with the highest number of snowfall days are January and February (0.3 days).
The months with the least snowfall days are March, April, May, June, July, August, September, October and November (0 days).
Average daylight in August /
Average sunshine in August
San Antonio, 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 18min).
The month with the least sunshine is December (Average sunshine: 5h and 18min).
Average sunshine days in August
San Antonio, TX
- Average sunshine days in August: 19.8 days
The month with the most sunshine days is January (20.3 days).
The months with the least sunshine days are May and September (11.8 days).
Average UV index in August
San Antonio, 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
San Antonio, TX
- Average cloud cover in August: 23
The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is August (Cloud cover 23).
Average visibility in August
San Antonio, 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).
San Antonio, Texas, USA
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