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April Weather in San Antonio, Peru

Last updated: August 27, 2025

In April, the average temperature in San Antonio, Peru reaches a warm 26°C (79°F). Expect minimums around 21°C (71°F) and maximums soaring to 34°C (93°F). During this time, precipitation averages 322 mm (12.7 in) spread across 27 days, contributing to a high average humidity of 85%.

April Temperature in San Antonio

In April, in San Antonio, the average temperature is 26°C (79°F). The maximum can reach 34°C (93°F) and the minimum can be as low as 21°C (71°F). This pleasant weather makes San Antonio an ideal destination for travelers seeking warmth and comfort.

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 26°C (79°F), with highs reaching up to 34°C (93°F) and lows dropping to around 21°C (71°F).
JanFebMarAprMayJunJulAugSepOctNovDec797979797878777979797979
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 322 mm (12.7 in) over a span of 27 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 322 mm (12.7 inches) of precipitation spread over approximately 27 days.
JanFebMarAprMayJunJulAugSepOctNovDec275279322322242184149120170202239320
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 85%. With an average temperature of 26°C (79°F), this humidity feels like a heavy blanket enveloping you, making outdoor activities feel stifling and exhausting for travelers.

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 85%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec83%79%82%85%91%85%74%59%55%57%74%87%
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 16, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, making it crucial to take protective measures. For detailed information, you can refer to 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 16, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec151617161312111214141313
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 Weather26°C (79°F)275 mm (10.8 inches)83%extreme
February Weather26°C (79°F)278 mm (11.0 inches)78%extreme
March Weather26°C (79°F)322 mm (12.7 inches)82%extreme
April Weather26°C (79°F)322 mm (12.7 inches)85%extreme
May Weather26°C (79°F)242 mm (9.5 inches)91%extreme
June Weather26°C (78°F)184 mm (7.2 inches)85%extreme
July Weather25°C (78°F)149 mm (5.9 inches)74%extreme
August Weather26°C (79°F)120 mm (4.7 inches)59%extreme
September Weather26°C (80°F)170 mm (6.7 inches)55%extreme
October Weather26°C (80°F)202 mm (8.0 inches)57%extreme
November Weather26°C (80°F)239 mm (9.4 inches)74%extreme
December Weather26°C (79°F)320 mm (12.6 inches)87%extreme

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