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October Weather in San Antonio, Mexico

Last updated: August 27, 2025

In October, the average temperature in San Antonio, Mexico is a pleasant 18°C (65°F). Expect a minimum of 8°C (47°F) and a maximum of 28°C (83°F). During this month, anticipate 75 mm (3.0 in) of precipitation over 12 days, with an average humidity of 79%. Perfect for those who enjoy a mild, humid climate!

October Temperature in San Antonio

In October, in San Antonio, the average temperature is 18°C (65°F). Maximums can reach 28°C (83°F), while minimums can drop as low as 8°C (47°F). This makes San Antonio an ideal destination for travelers seeking mild weather and comfortable conditions during their visit.

October Weather in San Antonio: Daily Temperature Highs, Lows, and Averages

The chart illustrates October temperature patterns in San Antonio, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Antonio, October typically has an average temperature of 18°C (65°F), with highs reaching up to 28°C (83°F) and lows dropping to around 8°C (47°F).
JanFebMarAprMayJunJulAugSepOctNovDec596267707168666666656259
Data source: Temperature data for San Antonio generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

October Precipitation in San Antonio

In San Antonio in October, the precipitation amount is 75 mm (3.0 in) over the course of 12 days.

October Precipitation Trends in San Antonio

The chart displays monthly precipitation patterns in San Antonio, with values for each month alongside October’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how October’s conditions compare to those of other months. In San Antonio, October typically receives around 75 mm (3.0 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec811151060131146166148753810
Data source: Precipitation data for October generated using information from the Copernicus Climate Change Service.
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October Humidity in San Antonio

In San Antonio in October, humidity is 79%. With an average temperature of 18°C (65°F), this humidity feels like walking through a warm mist, making traveling slightly uncomfortable and sticky, but offering a refreshing escape when you find moments of shade or a breeze.

October Average Humidity in San Antonio

This chart illustrates the average monthly humidity levels in San Antonio, with October’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In October, average humidity in San Antonio is approximately 79%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec70%64%54%61%75%83%83%85%85%79%76%75%
Data source: Humidity data for October generated using information from the Copernicus Climate Change Service.

October UV Index in San Antonio

In San Antonio in October, the maximum UV index is 12, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, underscoring the importance of sun protection. For detailed information, you can check the Hourly UV Index in San Antonio.

Maximum UV Index Levels in San Antonio for October

The chart shows the monthly maximum UV Index (UVI) for San Antonio in October, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In October, the maximum UV index in San Antonio typically reaches 12, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec10111415141414141412108
Data source: San Antonio October UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How October Weather in San Antonio Compares to Other Months

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.

This table compares monthly weather conditions in San Antonio, showing how October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather15°C (59°F)8 mm (0.3 inches)70%very high
February Weather17°C (62°F)11 mm (0.4 inches)64%extreme
March Weather19°C (67°F)15 mm (0.6 inches)54%extreme
April Weather21°C (70°F)10 mm (0.4 inches)61%extreme
May Weather21°C (71°F)60 mm (2.4 inches)75%extreme
June Weather20°C (69°F)131 mm (5.2 inches)83%extreme
July Weather19°C (66°F)146 mm (5.7 inches)83%extreme
August Weather19°C (66°F)166 mm (6.5 inches)85%extreme
September Weather19°C (66°F)148 mm (5.8 inches)85%extreme
October Weather18°C (65°F)75 mm (3.0 inches)79%extreme
November Weather17°C (62°F)38 mm (1.5 inches)76%very high
December Weather15°C (59°F)10 mm (0.4 inches)74%very high

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