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May Weather in San Antonio, Argentina

Last updated: August 22, 2025

In May, the average temperature in San Antonio, Argentina is a pleasant 11°C (53°F). However, temperatures can range from a chilly -1°C (30°F) to a warm 25°C (78°F). Expect 97 mm (3.8 in) of precipitation over approximately 12 days, contributing to an average humidity of 82%. Be prepared for varying weather as you explore this vibrant locale!

May Temperature in San Antonio

In May in San Antonio, the average temperature is 11°C (53°F). The maximum can reach 25°C (78°F) and the minimum can be as low as -1°C (30°F). It's a great time to travel if you enjoy mild weather and the possibility of experiencing a range of temperatures.

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 11°C (53°F), with highs reaching up to 25°C (78°F) and lows dropping to around -1°C (30°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.

May Precipitation in San Antonio

In San Antonio in May, the precipitation amount is 97 mm (3.8 in) spread over 12 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 97 mm (3.8 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec2352102071819743261451103170230
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 82%. With an average temperature of 11°C (53°F), this humidity feels like a heavy blanket wrapping around you, making outdoor activities uncomfortable and sticky, often requiring frequent breaks to escape the muggy atmosphere.

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 82%, 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 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 is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more 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 7, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec15141310756710131515
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 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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