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April Weather in San Antonio, Mexico

Last updated: August 27, 2025

In San Antonio, Mexico, the average temperature in April hovers around 23°C (73°F). The climate can vary, with minimums dipping to 13°C (55°F) and maximums soaring to 34°C (94°F). Enjoy the dry conditions with 0 mm (0.0 in) of precipitation over 0 days and a comfortable average humidity of 51%.

April Temperature in San Antonio

In April in San Antonio, the average temperature is 23°C (73°F). The maximum can reach 34°C (94°F), while the minimum can be as low as 13°C (55°F). This comfortable climate makes San Antonio an ideal destination for travelers seeking pleasant weather during this time of year.

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

The chart illustrates April 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, April typically has an average temperature of 23°C (73°F), with highs reaching up to 34°C (94°F) and lows dropping to around 13°C (55°F).
JanFebMarAprMayJunJulAugSepOctNovDec646568737884878886837466
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.

April Precipitation in San Antonio

In San Antonio in April, the precipitation amount is 0 mm (0.0 in) during 0 days.

April Precipitation Trends in San Antonio

The chart displays monthly precipitation patterns in San Antonio, with values for each month alongside April’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how April’s conditions compare to those of other months. In San Antonio, April typically receives around 0 mm (0.0 inches) of precipitation spread over approximately 0 days.
JanFebMarAprMayJunJulAugSepOctNovDec13950018367377202816
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in San Antonio

In San Antonio in April, humidity is 51%. With an average temperature of 23°C (73°F), this humidity feels like a refreshing embrace, making it pleasant for exploring the local sights without feeling overly sticky or uncomfortable.

April Average Humidity in San Antonio

This chart illustrates the average monthly humidity levels in San Antonio, with April’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In April, average humidity in San Antonio is approximately 51%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec75%67%60%51%47%50%70%82%82%78%78%81%
Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in San Antonio

In San Antonio in April, 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 April

The chart shows the monthly maximum UV Index (UVI) for San Antonio in April, 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 April, the maximum UV index in San Antonio typically reaches 12, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec68101212121212121075
Data source: San Antonio April 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 April 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 April’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 April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather18°C (64°F)13 mm (0.5 inches)74%high
February Weather18°C (65°F)9 mm (0.4 inches)67%very high
March Weather20°C (68°F)5 mm (0.2 inches)60%very high
April Weather23°C (73°F)0 mm (0.0 inches)51%extreme
May Weather25°C (78°F)0 mm (0.0 inches)47%extreme
June Weather29°C (84°F)18 mm (0.7 inches)50%extreme
July Weather31°C (88°F)36 mm (1.4 inches)70%extreme
August Weather31°C (88°F)73 mm (2.9 inches)81%extreme
September Weather30°C (86°F)77 mm (3.0 inches)82%extreme
October Weather28°C (83°F)20 mm (0.8 inches)78%very high
November Weather24°C (75°F)28 mm (1.1 inches)78%high
December Weather19°C (66°F)16 mm (0.6 inches)80%moderate

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