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May Weather in San Antonio, Peru

Last updated: August 27, 2025

In May, the average temperature in San Antonio, Peru is a pleasant 24°C (76°F). During this time, you can expect temperatures to range from a minimum of 18°C (64°F) to a sizzling maximum of 33°C (92°F). Rainfall is also common, with an average precipitation of 203 mm (8.0 in) spread over 21 days, contributing to a humidity level of 86%. Ideal for those who enjoy a tropical atmosphere!

May Temperature in San Antonio

In May in San Antonio, the average temperature is 24°C (76°F), with maximums reaching 33°C (92°F) and minimums dipping to as low as 18°C (64°F). This mild climate makes San Antonio an ideal destination for travelers seeking comfortable weather and pleasant outdoor activities.

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

The chart illustrates May 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, May typically has an average temperature of 24°C (76°F), with highs reaching up to 33°C (92°F) and lows dropping to around 18°C (64°F).
JanFebMarAprMayJunJulAugSepOctNovDec777776767676757779787878
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.

May Precipitation in San Antonio

In San Antonio in May, the precipitation amount is 203 mm (8.0 in) over the course of 21 days.

May Precipitation Trends in San Antonio

The chart displays monthly precipitation patterns in San Antonio, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In San Antonio, May typically receives around 203 mm (8.0 inches) of precipitation spread over approximately 21 days.
JanFebMarAprMayJunJulAugSepOctNovDec181171291235203121686066141206154
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in San Antonio

In San Antonio in May, humidity is 86%. With an average temperature of 24°C (76°F), this humidity feels like a warm, heavy blanket enveloping you, making outdoor activities both challenging and exhilarating for travelers.

May Average Humidity in San Antonio

This chart illustrates the average monthly humidity levels in San Antonio, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in San Antonio is approximately 86%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec80%76%81%86%86%70%47%37%42%62%76%89%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in San Antonio

In San Antonio in May, the maximum UV index reaches 13, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take protective measures. For detailed information, you can check the Hourly UV Index in San Antonio.

Maximum UV Index Levels in San Antonio for May

The chart shows the monthly maximum UV Index (UVI) for San Antonio in May, 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 May, the maximum UV index in San Antonio typically reaches 13, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec151617161312111314151414
Data source: San Antonio May 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 May 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 May’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 May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather25°C (78°F)181 mm (7.1 inches)80%extreme
February Weather25°C (78°F)171 mm (6.7 inches)76%extreme
March Weather25°C (77°F)290 mm (11.4 inches)81%extreme
April Weather25°C (77°F)235 mm (9.3 inches)86%extreme
May Weather24°C (76°F)203 mm (8.0 inches)86%extreme
June Weather24°C (76°F)121 mm (4.8 inches)70%extreme
July Weather24°C (75°F)68 mm (2.7 inches)47%extreme
August Weather25°C (77°F)60 mm (2.4 inches)37%extreme
September Weather26°C (79°F)66 mm (2.6 inches)42%extreme
October Weather26°C (78°F)141 mm (5.6 inches)62%extreme
November Weather26°C (78°F)206 mm (8.1 inches)76%extreme
December Weather25°C (78°F)154 mm (6.1 inches)89%extreme

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