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April Weather in San Antonio, Argentina

Last updated: August 22, 2025

In April, the average temperature in San Antonio, Argentina hovers around 15°C (60°F). Expect a minimum chill of 2°C (36°F) and a warm high of 27°C (82°F). With 181 mm (7.1 in) of precipitation over 18 days, it's wise to carry an umbrella! The air is quite humid, with an average humidity of 83%, making for a refreshing atmosphere.

April Temperature in San Antonio

In April in San Antonio, the average temperature is 15°C (60°F). Maximum temperatures can reach 27°C (82°F), while minimums can be as low as 2°C (36°F). It's advisable to pack layers to comfortably enjoy your travels in this variable climate.

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 15°C (60°F), with highs reaching up to 27°C (82°F) and lows dropping to around 2°C (36°F).
JanFebMarAprMayJunJulAugSepOctNovDec686563595247465055606466
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 181 mm (7.1 in) spread over 18 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 181 mm (7.1 inches) of precipitation spread over approximately 18 days.
JanFebMarAprMayJunJulAugSepOctNovDec2352102071819743261451103170230
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 83%. With an average temperature of 15°C (60°F), this humidity feels like a damp blanket wrapping around you, making travel a bit uncomfortable and sticky, as the air clings to your skin and dampens your clothes.

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 83%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec63%66%68%83%82%72%57%42%51%47%58%62%
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 reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more 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 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec15141310756710131515
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 Weather20°C (68°F)235 mm (9.3 inches)63%extreme
February Weather19°C (66°F)210 mm (8.3 inches)66%extreme
March Weather17°C (63°F)207 mm (8.1 inches)68%extreme
April Weather15°C (60°F)181 mm (7.1 inches)83%very high
May Weather11°C (53°F)97 mm (3.8 inches)82%high
June Weather8°C (47°F)43 mm (1.7 inches)72%moderate
July Weather8°C (46°F)26 mm (1.0 inches)57%high
August Weather10°C (50°F)14 mm (0.5 inches)42%high
September Weather13°C (56°F)51 mm (2.0 inches)51%very high
October Weather16°C (61°F)103 mm (4.1 inches)47%extreme
November Weather18°C (64°F)170 mm (6.7 inches)58%extreme
December Weather19°C (66°F)230 mm (9.0 inches)61%extreme

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