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June Weather in San Antonio, Mexico

Last updated: August 27, 2025

In San Antonio, Mexico, the average temperature in June hovers around 20°C (69°F), with a minimum of 13°C (55°F) and a maximum of 33°C (91°F). Expect a fair amount of rain, with 231 mm (9.1 in) of precipitation over 22 days. The air tends to be quite humid, with an average humidity level of 80%.

June Temperature in San Antonio

In June in San Antonio, the average temperature is 20°C (69°F). Maximums can reach 33°C (91°F), while minimums can drop to as low as 13°C (55°F). This variation in temperature makes San Antonio a comfortable destination for travelers looking to enjoy a mix of warm and mild weather.

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

The chart illustrates June 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, June typically has an average temperature of 20°C (69°F), with highs reaching up to 33°C (91°F) and lows dropping to around 13°C (55°F).
JanFebMarAprMayJunJulAugSepOctNovDec596266687068666666666360
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.

June Precipitation in San Antonio

In San Antonio in June, the precipitation amount is 231 mm (9.1 in) over the course of 22 days.

June Precipitation Trends in San Antonio

The chart displays monthly precipitation patterns in San Antonio, with values for each month alongside June’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how June’s conditions compare to those of other months. In San Antonio, June typically receives around 231 mm (9.1 inches) of precipitation spread over approximately 22 days.
JanFebMarAprMayJunJulAugSepOctNovDec132173462324203833471453815
Data source: Precipitation data for June generated using information from the Copernicus Climate Change Service.
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June Humidity in San Antonio

In San Antonio in June, humidity is 80%. With an average temperature of 20°C (69°F), this humidity feels like a warm blanket enveloping you, making every step slightly more challenging as you navigate the air that clings to your skin, often leaving you longing for a cool breeze while exploring the sights.

June Average Humidity in San Antonio

This chart illustrates the average monthly humidity levels in San Antonio, with June’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In June, average humidity in San Antonio is approximately 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec70%65%59%60%67%80%81%83%83%80%77%76%
Data source: Humidity data for June generated using information from the Copernicus Climate Change Service.

June UV Index in San Antonio

In San Antonio in June, the maximum UV index is 14, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, so it's crucial to take precautions. For the detailed hourly UV index in San Antonio, you can check here.

Maximum UV Index Levels in San Antonio for June

The chart shows the monthly maximum UV Index (UVI) for San Antonio in June, 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 June, the maximum UV index in San Antonio typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec9111415141413131412108
Data source: San Antonio June 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 June 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 June’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 June’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather15°C (60°F)13 mm (0.5 inches)70%very high
February Weather16°C (62°F)21 mm (0.8 inches)65%extreme
March Weather19°C (66°F)7 mm (0.3 inches)59%extreme
April Weather20°C (68°F)3 mm (0.1 inches)60%extreme
May Weather21°C (70°F)46 mm (1.8 inches)67%extreme
June Weather20°C (69°F)231 mm (9.1 inches)80%extreme
July Weather19°C (66°F)420 mm (16.5 inches)81%extreme
August Weather19°C (66°F)383 mm (15.1 inches)83%extreme
September Weather19°C (66°F)347 mm (13.7 inches)83%extreme
October Weather19°C (66°F)145 mm (5.7 inches)80%extreme
November Weather17°C (63°F)38 mm (1.5 inches)77%very high
December Weather15°C (60°F)15 mm (0.6 inches)76%very high

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