July Weather in San Antonio, Mexico

Last updated: August 27, 2025

In San Antonio, Mexico, the average temperature in July reaches a warm 29°C (85°F). You might experience a low of 21°C (70°F) and a scorching high of 40°C (104°F). Expect a total precipitation of 82 mm (3.2 in) spread over 6 days, with an average humidity level of 57% to keep the air feeling refreshing.

July Temperature in San Antonio

In July in San Antonio, the average temperature is 29°C (85°F), with maximums reaching up to 40°C (104°F) and minimums dropping to as low as 21°C (70°F). This warm climate makes San Antonio an ideal destination for travelers seeking sunny weather and outdoor adventures.

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 29°C (85°F), with highs reaching up to 40°C (104°F) and lows dropping to around 21°C (70°F).

Data source: Temperature data for San Antonio generated using information from the Copernicus Climate Change Service.

July Precipitation in San Antonio

In San Antonio in July, the precipitation amount is 82 mm (3.2 in) over the course of 6 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 82 mm (3.2 inches) of precipitation spread over approximately 6 days.

Data source: Precipitation data for July generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

July Humidity in San Antonio

In San Antonio in July, humidity is 57%. With an average temperature of 29°C (85°F), this humidity feels like stepping into a warm embrace, where the air clings gently to your skin, making every move feel a bit heavier while still inviting you to explore the vibrant surroundings.

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 57%, offering insight into how humid the weather typically is during this month.

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 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 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 12, which falls under the extreme exposure category.

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.
	Temperature	Precipitation	Humidity	UV
January Weather	15°C (59°F)	24 mm (1.0 inches)	75%	high
February Weather	17°C (64°F)	13 mm (0.5 inches)	70%	very high
March Weather	22°C (71°F)	24 mm (0.9 inches)	65%	very high
April Weather	24°C (76°F)	40 mm (1.6 inches)	59%	extreme
May Weather	27°C (81°F)	68 mm (2.7 inches)	66%	extreme
June Weather	29°C (84°F)	86 mm (3.4 inches)	71%	extreme
July Weather	29°C (85°F)	82 mm (3.2 inches)	57%	extreme
August Weather	30°C (87°F)	15 mm (0.6 inches)	58%	extreme
September Weather	27°C (81°F)	110 mm (4.3 inches)	72%	extreme
October Weather	24°C (75°F)	49 mm (1.9 inches)	76%	very high
November Weather	19°C (67°F)	24 mm (0.9 inches)	81%	high
December Weather	17°C (62°F)	21 mm (0.8 inches)	80%	high