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.