San Antonio Weather in August

August in San Antonio brings moderate temperatures around 15°C (59°F) during the day, dropping to 8°C (46°F) at night, with quite a bit of rainfall expected, averaging around 63 mm (2.5 in) for the month.

Rainfall in San Antonio in August

You can typically expect 3 days of rain this month, averaging around 63 mm (2.5 in). Although rain is not especially frequent, individual showers can still be quite heavy.

Temperature in San Antonio in August

If you're visiting San Antonio in August, expect highs of 15°C (59°F) and overnight lows around 8°C (46°F). Even when the weather is stable, mornings and evenings can still feel distinctly cool. Nights fall to 8°C (46°F), which is cold enough to feel it indoors too. A good thick duvet makes all the difference for a comfortable night's sleep.

Sunshine in San Antonio in August

The month brings about 119 hours of sunlight, offering a comfortable mix of sun and overcast.

If you prefer dry days with pleasant temperatures, January, February, March, April, October, November and December typically offer the best circumstances. If you're seeking pleasant, dry and sunny weather somewhere else in the world, our weather planner can help you explore other options.