Last updated: August 27, 2025
In San Antonio, Mexico, the average temperature in October hovers around 17°C (63°F), with variations ranging from a chilly 2°C (37°F) to a warm 29°C (84°F). Expect a modest precipitation of 63 mm (2.5 in) spread over about 10 days, contributing to an average humidity level of 83%. Get ready for a month that balances warmth and moisture!
In October in San Antonio, the average temperature is 17°C (63°F), with maximums reaching 29°C (84°F) and minimums dropping as low as 2°C (37°F). This makes it an ideal time for travelers to enjoy a comfortable climate while exploring the area.
In San Antonio in October, the precipitation amount is 63 mm (2.5 in) over a span of 10 days.
In San Antonio in October humidity is 83%. With an average temperature of 17°C (63°F), this humidity feels like a warm, sticky embrace that can make traveling uncomfortable, as the air clings to the skin and creates a heavy atmosphere, often leading to fatigue and a longing for the cooling relief of shade or air conditioning.
In San Antonio in October, the maximum UV index reaches 13, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take protective measures. 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 October’s weather to other months in San Antonio, focusing on differences in temperature, rainfall, humidity, and UV levels.
| Temperature | Precipitation | Humidity | UV | |
|---|---|---|---|---|
| January Weather | 13°C (55°F) | 7 mm (0.3 inches) | 74% | very high |
| February Weather | 15°C (60°F) | 10 mm (0.4 inches) | 65% | extreme |
| March Weather | 18°C (64°F) | 14 mm (0.5 inches) | 58% | extreme |
| April Weather | 20°C (68°F) | 9 mm (0.4 inches) | 58% | extreme |
| May Weather | 21°C (71°F) | 45 mm (1.8 inches) | 67% | extreme |
| June Weather | 20°C (68°F) | 120 mm (4.7 inches) | 76% | extreme |
| July Weather | 19°C (67°F) | 106 mm (4.2 inches) | 67% | extreme |
| August Weather | 20°C (67°F) | 77 mm (3.0 inches) | 68% | extreme |
| September Weather | 18°C (65°F) | 121 mm (4.8 inches) | 81% | extreme |
| October Weather | 17°C (63°F) | 63 mm (2.5 inches) | 83% | extreme |
| November Weather | 15°C (58°F) | 23 mm (0.9 inches) | 84% | very high |
| December Weather | 13°C (55°F) | 7 mm (0.3 inches) | 81% | very high |