San Antonio Weather in August: Temperature, Precipitation, Wind
San Antonio, Texas experiences scorching hot weather in August, characterized by intense heat and minimal precipitation. The average temperature hovers around 32°C (89.7°F), with daytime highs soaring to a sweltering 39.3°C (102.7°F). Nighttime offers little respite, as temperatures only drop to 25.5°C (77.9°F) on average.
Heat indices in San Antonio during August frequently exceed actual temperatures. The average “feels like” temperature reaches 33.7°C (92.6°F), with maximum heat indices climbing to a blistering 40.2°C (104.4°F). Residents and visitors to popular attractions like the River Walk and the Alamo must take precautions against heat-related illnesses.
August in San Antonio is predominantly dry, with an average precipitation of only 0.4 mm (0.02 inches). Rain occurs on approximately 3 days throughout the month, with a 9.7% probability of precipitation on any given day. The most common form of precipitation is rain.
Humidity levels average 52.3%, contributing to the oppressive heat sensation. Wind speeds average 25.6 km/h (15.9 mph), with gusts reaching up to 42.2 km/h (26.2 mph). These winds provide minimal relief from the heat but can exacerbate wildfire risks in the surrounding areas.
Cloud cover remains low at 22.8%, allowing for ample sunshine and high UV indices. The average UV index of 9.0 indicates very high UV radiation levels, necessitating robust sun protection measures for outdoor activities at popular spots like Six Flags Fiesta Texas or the San Antonio Zoo.
Atmospheric pressure averages 1012.1 hPa, typical for summer conditions in the region. Visibility is excellent, averaging 15.9 km (9.9 miles), allowing for clear views of the city skyline from vantage points like the Tower of the Americas.
August days in San Antonio are long, with sunrise occurring around 7:02 AM and sunset at approximately 8:13 PM. The extended daylight hours contribute to the accumulation of heat throughout the day, making early morning or late evening the most comfortable times for outdoor activities.
The severe weather risk in August stands at 39.0%, indicating a moderate chance of intense weather events. Residents and visitors should stay informed about potential weather hazards, during outdoor events or when exploring natural areas like Government Canyon State Natural Area.
What is the temperature in San Antonio in August?
Average air temperature in San Antonio is 32°C (89.7°F) in August. The outside temperature in San Antonio feels like 33.7°C (92.6°F) on a typical August day. The highest average temperature during sunny days is 39.3°C (102.7°F) and feels like 40.2°C (104.4°F). The lowest average temperature after dark is 25.5°C (77.9°F) which feels like 25.7°C (78.2°F).
How hot is San Antonio in August?
The hot temperature in August in San Antonio rises to 41.3°C (106.3°F) on sunny days with low cloud coverage and 52.3% humidity. During hottest days of August it feels like 43.1 °C (109.6°F). The average maximum temp in San Antonio is 39.3°C (109.6°F) during day time in August.
How cold is San Antonio in August?
The coldest temp in San Antonio in August drops to 22.5°C (72.5°F) during the cold nights. With 25.6km/h (15.9mph) winds and 52.3% humidity it feels like 22.5°C (72.5°F) on the coldest nights. The average minimum temperature is 25.5°C (77.9°F) during night time in August.
Does it rain in San Antonio in August?
Yes, it rains for 3 days in San Antonio, United States in August averaging 0.4 mm of precipitation. San Antonio has a 9.7% chance for rain throughout the entire month of August.
How much does it rain in San Antonio throughout August?
San Antonio has 0.4 mm (0.02 inch) of rain per day on average in August. It rains for an average of 3 days out of the entire month.
Is San Antonio windy in August?
The average speed of wind in San Antonio, United States during August is 25.6km/h (15.9mph) and average windgust is 42.2km/h (26.2mph). On some days in August wind can reach up to 34.6km/h (21.5mph).
What is the direction of the wind in San Antonio in August?
Most days of August the wind is blowing from Southeast direction in San Antonio.
What are the humidity levels in San Antonio in August?
The average humidity levels in San Antonio in August are 52.3%. Daily humidity levels in San Antonio range from 32.3% to 69.4% during August.
How many hours of daylight are in San Antonio in August?
San Antonio has 13 hours 10 minutes of daylight in August on average. Sunset and sunrise times gradually change throughout the month. Sunrise in San Antonio in August is at 7:02:34 and the sunset is at 20:12:57.
What is the cloud coverage in San Antonio in August?
Clouds cover 22.8% of the sky on average throughout August in San Antonio. The cloud coverage ranges from 3.4% to 70.2% depending on the day of the month.
What is the UV level in August in San Antonio?
The average UV index in San Antonio is 9 in August. UV levels change throughout the month and range from 4 to 10.
What is the solar radiation in San Antonio in August?
The average solar radiation is 272.9 W/m2 (Watts per square meter) in San Antonio during August. However solar radiation levels change throughout the month and range from 78.4 W/m2 to 312.1 W/m2.
What is the solar energy during August in San Antonio?
The average solar energy during August in San Antonio is 23.6 MJ/m2 (megajoules per square metre). Solar energy ranges from 6.7 MJ/m2, to 27 MJ/m2 during August.
Are there severe weather risks in San Antonio in August?
Yes, there is a 39% risk for severe weather in San Antonio, United States in August.
What is the air pressure in San Antonio in August?
On average the air pressure in San Antonio in August is 1012.1 mb (millibars). Throughout the month the sea level pressure ranges from 1008.2 mb to 1015.5 mb.
What is the visibility in San Antonio in August?
The average daylight visibility in San Antonio in August is 15.9 km (9.9 miles). Depending on the precipitation the visibility ranges from 15.5 km (9.6 miles) to 16 km (9.9 miles) throughout August.
What is the dew point in San Antonio in August?
The average dew point in San Antonio during August is 19.5°C (67.1°F).
Where is the data for San Antonio climate in August coming from?
The climate data for San Antonio, Texas, United States in August is collected from the following weather stations.
- SAN ANTONIO STINSON MUNICIPAL AIRPORT, TX US
- SAN ANTONIO INTERNATIONAL AIRPORT, TX US
- SAN ANTONIO KELLY FIELD AFB, TX US
- FW6098 San Antonio TX US
- KSAT
- KSKF
- KSSF