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July Weather in San Antonio, Mexico

Last updated: August 26, 2025

In San Antonio, Mexico, the average temperature in July is a warm 28°C (83°F). You'll experience minimal temperatures around 24°C (75°F) and highs reaching 33°C (92°F). Be prepared for some rainfall, with 95 mm (3.8 in) expected over 15 days of the month, while the air carries an average humidity of 79%.

July Temperature in San Antonio

In July in San Antonio, the average temperature is 28°C (83°F), with maximums reaching 33°C (92°F) and minimums dipping as low as 24°C (75°F). This warm and pleasant climate makes San Antonio an ideal destination for travelers seeking a sunny getaway.

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

The chart illustrates July 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, July typically has an average temperature of 28°C (83°F), with highs reaching up to 33°C (92°F) and lows dropping to around 24°C (75°F).
JanFebMarAprMayJunJulAugSepOctNovDec807980818282838281818180
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.

July Precipitation in San Antonio

In San Antonio in July, the precipitation amount is 95 mm (3.8 in) over the course of 15 days.

July Precipitation Trends in San Antonio

The chart displays monthly precipitation patterns in San Antonio, with values for each month alongside July’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how July’s conditions compare to those of other months. In San Antonio, July typically receives around 95 mm (3.8 inches) of precipitation spread over approximately 15 days.
JanFebMarAprMayJunJulAugSepOctNovDec210113235952842992133717
Data source: Precipitation data for July generated using information from the Copernicus Climate Change Service.
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July Humidity in San Antonio

In San Antonio in July humidity is 79%. With an average temperature of 28°C (83°F), this humidity feels like a thick blanket wrapping around you, making outdoor activities a challenge but also adding a certain tropical charm to your travel experience.

July Average Humidity in San Antonio

This chart illustrates the average monthly humidity levels in San Antonio, with July’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In July, average humidity in San Antonio is approximately 79%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec65%61%59%62%73%78%79%82%82%79%72%70%
Data source: Humidity data for July generated using information from the Copernicus Climate Change Service.

July UV Index in San Antonio

In San Antonio in July, 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.

Maximum UV Index Levels in San Antonio for July

The chart shows the monthly maximum UV Index (UVI) for San Antonio in July, 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 July, the maximum UV index in San Antonio typically reaches 13, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec911131313141313131198
Data source: San Antonio July 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 July 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 July’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 July’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather27°C (80°F)2 mm (0.1 inches)65%very high
February Weather26°C (80°F)1 mm (0.0 inches)61%extreme
March Weather27°C (80°F)0 mm (0.0 inches)59%extreme
April Weather27°C (81°F)1 mm (0.0 inches)62%extreme
May Weather28°C (82°F)13 mm (0.5 inches)73%extreme
June Weather28°C (82°F)235 mm (9.3 inches)78%extreme
July Weather28°C (83°F)95 mm (3.8 inches)79%extreme
August Weather28°C (82°F)284 mm (11.2 inches)82%extreme
September Weather27°C (81°F)299 mm (11.8 inches)82%extreme
October Weather27°C (81°F)212 mm (8.4 inches)79%extreme
November Weather27°C (81°F)37 mm (1.5 inches)72%very high
December Weather27°C (80°F)17 mm (0.7 inches)70%very high

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