San Antonio Weather in August
In San Antonio, August brings pleasant daytime temperatures around 20°C (68°F), with nights cooling to 10°C (50°F). It is the driest month of the year, with minimal rainfall.
Rainfall in San Antonio in August
The risk of rain is at its lowest this month, making it a reliable choice for outdoor plans. Historically, August sees about 5 days of rain, with a monthly average of 140 mm (5.5 in). Showers tend to be short but heavy rather than persistent drizzle. When it rains, it usually means it, but it doesn't last long.
Temperature in San Antonio in August
August in San Antonio brings pleasant temperatures, with highs of 20°C (68°F) and nights around 10°C (50°F). Conditions are often most pleasant around the middle of the day. With overnight lows of 10°C (50°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep.
Sunshine in San Antonio in August
There are approximately 257 hours of sunshine this month, resulting in mostly clear days.
Wind Speed in San Antonio in August
Wind speeds average 1 m/s (2 knots) during August. At this speed, you'll experience mostly light air movement that's just barely noticeable. As an average, some days will be completely calm while others have gentle breezes you can feel on your skin.Our weather planner can help you find worldwide destinations with pleasant weather during this period. July and August typically offer the best weather for San Antonio.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Ecuador, check out our San Antonio's climate page.
San Antonio Temperature in August
Min Temperature
10°C (50°F)
Max Temperature
20°C (68°F)
Chance of Rain
18%
Precipitation
140 mm (5.5 in)
Rainy days
5 days
Humidity
69% *
Windspeed
1 m/s (2 knots) *
Sunshine
257 hours *
Percentage Sunshine
*
Daily Historical Temperatures
49-year average (1976-2025)
Based on our historical records, temperatures in San Antonio typically stay consistent throughout August, with daily highs averaging around 20°C (68°F). Nights are cool, with lows around 9°C (48°F).
Average temperatures in August
Historical weather for San Antonio in August
Browse day-by-day weather records for San Antonio spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
San Antonio historical weather extremes in August
The extremes listed below come from historical weather data collected in San Antonio from 2005 through 2025.
- On August 30, 2024, temperatures climbed to 28°C (82°F), marking the warmest August day on record.
- On August 29, 2008, San Antonio saw its coldest August day with temperatures maxing out at 16°C (61°F).
- The coldest night in August in San Antonio was on August 23, 2022, with a minimum of 3°C (37°F).
Best Places in Ecuador in August
Find out more about the weather in Ecuador and which places have the best travel conditions in this month. See all of Ecuador in August →
perfect weather
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tolerable
unpleasant
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What to Wear in San Antonio in August
Pleasant temperatures in August mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Prepare for significant rainfall with proper waterproof clothing and shoes. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.What To Do in San Antonio in August
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Ecuador, check out our San Antonio's climate page.
Temperature Rainfall Sunshine Humidity Wind Speed
See the full San Antonio climate overview or explore weather in Ecuador.
