Last updated: August 22, 2025
In San Antonio, Argentina, the average temperature in August hovers around 12°C (55°F), with fluctuations ranging from a chilly -1°C (30°F) to a warm 31°C (88°F). Expect a total precipitation of 52 mm (2.1 in) spread across about 8 days, contributing to an average humidity level of 44%. Whether you're planning an outdoor adventure or a cozy indoor day, prepare for a mix of weather this month!
In August in San Antonio, the average temperature is 12°C (55°F), with maximums reaching up to 31°C (88°F) and minimums dropping as low as -1°C (30°F). Travelers should be prepared for a wide range of temperatures, making layering essential for comfort.
In San Antonio in August, the total precipitation amount is 52 mm (2.1 in) over the course of 8 days.
In San Antonio in August, humidity is 44%. With an average temperature of 12°C (55°F), this humidity feels like a refreshing coolness, making it pleasant for traveling.
In San Antonio in August, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in San Antonio.
UV Risk Categories
Weather in San Antonio varies notably across the year, with each month offering distinct climate conditions. This page compares August’s weather to other months in San Antonio, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 21°C (69°F) | 223 mm (8.8 inches) | 84% | extreme |
| February Weather | 19°C (67°F) | 237 mm (9.3 inches) | 87% | extreme |
| March Weather | 18°C (65°F) | 282 mm (11.1 inches) | 88% | extreme |
| April Weather | 16°C (61°F) | 267 mm (10.5 inches) | 85% | extreme |
| May Weather | 13°C (56°F) | 155 mm (6.1 inches) | 74% | very high |
| June Weather | 11°C (52°F) | 55 mm (2.2 inches) | 56% | high |
| July Weather | 11°C (52°F) | 45 mm (1.8 inches) | 47% | high |
| August Weather | 12°C (55°F) | 52 mm (2.1 inches) | 44% | very high |
| September Weather | 15°C (60°F) | 85 mm (3.4 inches) | 57% | extreme |
| October Weather | 18°C (64°F) | 201 mm (7.9 inches) | 55% | extreme |
| November Weather | 19°C (66°F) | 241 mm (9.5 inches) | 70% | extreme |
| December Weather | 20°C (68°F) | 272 mm (10.7 inches) | 77% | extreme |