San Antonio
August
Weather in San Antonio for August 2025
Your guide to San Antonio weather in August - trends and predictions
In general, the average temperature in San Antonio at the beginning of August is 38.7 °F. As the month progressed, temperatures tended to moderately fall, reaching an average of 37.6 °F by the end of August.
With an average of 3 rainy days, San Antonio experiences minimal rainfall in August, ensuring that most days remain pleasantly dry.
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28
Dry days
3
Rainy days
0
Snow days
41°/25°
Temperatures
24 km/h
Avg max wind
49 %
Avg humidity
San Antonio in August average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  38° | 2  38° | 3 39° | ||||
| 4  39° | 5 39° | 6 39° | 7 39° | 8 40° | 9 40° | 10 39° |
| 11 39° | 12 39° | 13 39° | 14 39° | 15 39° | 16  39° | 17 40° |
| 18 39° | 19 40° | 20 41° | 21  42° | 22 37° | 23  37° | 24 37° |
| 25 38° | 26 38° | 27 39° | 28 39° | 29 36° | 30 36° | 31 37° |
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Temperatures trend during August in San Antonio
See the weather trend as well as the moving average line
August weather day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Aug. 1 | Cloudy | 38° /23° | 0 mm | 9 | |
| Aug. 2 | Overcast | 38° /23° | 0 mm | 9 | |
| Aug. 3 | Overcast | 39° /25° | 0 mm | 9 | |
| Aug. 4 | Sunny | 39° /25° | 1.8 mm | 9 | |
| Aug. 5 | Cloudy | 39° /25° | 0 mm | 9 | |
| Aug. 6 | Overcast | 39° /25° | 0 mm | 9 | |
| Aug. 7 | Overcast | 39° /25° | 0 mm | 9 | |
| Aug. 8 | Overcast | 40° /25° | 0 mm | 9 | |
| Aug. 9 | Overcast | 40° /24° | 0 mm | 9 | |
| Aug. 10 | Overcast | 39° /24° | 0.6 mm | 9 | |
| Aug. 11 | Overcast | 39° /25° | 0 mm | 9 | |
| Aug. 12 | Overcast | 39° /25° | 0 mm | 9 | |
| Aug. 13 | Overcast | 39° /25° | 0 mm | 9 | |
| Aug. 14 | Overcast | 39° /24° | 0 mm | 9 | |
| Aug. 15 | Sunny | 39° /25° | 0 mm | 10 | |
| Aug. 16 | Patchy rain possible | 39° /25° | 0.1 mm | 9 | |
| Aug. 17 | Sunny | 40° /25° | 0 mm | 10 | |
| Aug. 18 | Sunny | 39° /24° | 0 mm | 10 | |
| Aug. 19 | Overcast | 40° /24° | 0 mm | 9 | |
| Aug. 20 | Overcast | 41° /24° | 0 mm | 10 | |
| Aug. 21 | Partly cloudy | 42° /27° | 0.4 mm | 10 | |
| Aug. 22 | Patchy rain possible | 37° /26° | 2.7 mm | 8 | |
| Aug. 23 | Moderate rain at times | 37° /24° | 1.3 mm | 9 | |
| Aug. 24 | Cloudy | 37° /24° | 0 mm | 8 | |
| Aug. 25 | Partly cloudy | 38° /25° | 0 mm | 10 | |
| Aug. 26 | Partly cloudy | 38° /23° | 2.3 mm | 9 | |
| Aug. 27 | Sunny | 39° /23° | 5.2 mm | 9 | |
| Aug. 28 | Patchy rain possible | 39° /25° | 0.5 mm | 8 | |
| Aug. 29 | Partly cloudy | 36° /25° | 0.4 mm | 8 | |
| Aug. 30 | Partly cloudy | 36° /24° | 0 mm | 8 | |
| Aug. 31 | Sunny | 37° /25° | 1.8 mm | 9 | |
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Important Notice
Our weather forecast for San Antonio in August is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the San Antonio forecast closer to your planned date for the most up-to-date weather information.
San Antonio in August - FAQ
What are the expected maximum and minimum temperatures in San Antonio during August?
With daytime temperatures soaring above 41° and not dropping much below 25° at night, August in San Antonio is quite hot. Staying hydrated and avoiding peak sun hours is advisable.
How much rainfall should be expected in San Antonio during August?
Rainfall in San Antonio during August is rare to nonexistent, with the total expected rainfall being less than 10 mm and approximately 3 days seeing any precipitation. Planning without the concern for rain is generally straightforward during this very dry period.
What are the typical wind conditions in San Antonio during August?
The average wind speed in San Antonio during August is 24 km/h, suggesting breezy to windy conditions, depending on your activities.
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