nomadseason

May Weather in San Antonio, Argentina

Last updated: August 22, 2025

In San Antonio, Argentina, the average temperature in May is a cool 13°C (56°F), with minimums dipping to 2°C (35°F) and maximums reaching up to 25°C (78°F). Visitors should prepare for a relatively wet month, with 155 mm (6.1 in) of precipitation expected over 19 days. With an average humidity of 74%, the air can feel quite brisk, so it's wise to dress in layers!

May Temperature in San Antonio

In May in San Antonio, the average temperature is 13°C (56°F). Maximum temperatures can reach 25°C (78°F), while minimums can drop as low as 2°C (35°F). This makes it a great time for travelers to enjoy mild weather and explore the area comfortably.

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 13°C (56°F), with highs reaching up to 25°C (78°F) and lows dropping to around 2°C (35°F).
JanFebMarAprMayJunJulAugSepOctNovDec696764615552515459646668
Data source: Temperature data for San Antonio generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
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 total precipitation amount is 155 mm (6.1 in), which occurs over the course of 19 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 155 mm (6.1 inches) of precipitation spread over approximately 19 days.
JanFebMarAprMayJunJulAugSepOctNovDec22323728226715555455285201241272
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

May Humidity in San Antonio

In San Antonio in May humidity is 74%. With an average temperature of 13°C (56°F), this humidity feels like a damp chill that can make outdoor activities uncomfortable, especially for travelers unaccustomed to such conditions.

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 74%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec84%87%88%85%74%56%47%44%57%55%70%77%
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 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to 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 8, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec16151411867911141616
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 Weather21°C (69°F)223 mm (8.8 inches)84%extreme
February Weather19°C (67°F)237 mm (9.3 inches)87%extreme
March Weather18°C (65°F)282 mm (11.1 inches)88%extreme
April Weather16°C (61°F)267 mm (10.5 inches)85%extreme
May Weather13°C (56°F)155 mm (6.1 inches)74%very high
June Weather11°C (52°F)55 mm (2.2 inches)56%high
July Weather11°C (52°F)45 mm (1.8 inches)47%high
August Weather12°C (55°F)52 mm (2.1 inches)44%very high
September Weather15°C (60°F)85 mm (3.4 inches)57%extreme
October Weather18°C (64°F)201 mm (7.9 inches)55%extreme
November Weather19°C (66°F)241 mm (9.5 inches)70%extreme
December Weather20°C (68°F)272 mm (10.7 inches)77%extreme

Compare San Antonio's Climate with Cities Worldwide