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March Weather in San Antonio, Argentina

Last updated: August 22, 2025

In San Antonio, Argentina, the average temperature in March hovers around 18°C (65°F). Expect a minimum of 7°C (45°F) and a maximum soaring to 30°C (86°F). During this month, you might encounter 282 mm (11.1 in) of precipitation spread over 24 days, contributing to a notably high average humidity of 88%. Stay prepared for a variety of weather conditions!

March Temperature in San Antonio

In March in San Antonio, the average temperature is 18°C (65°F), with maximums reaching 30°C (86°F) and minimums dropping to as low as 7°C (45°F). This climate makes it an ideal time for outdoor activities, ensuring you can enjoy both warm days and cooler evenings while exploring.

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

The chart illustrates March 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, March typically has an average temperature of 18°C (65°F), with highs reaching up to 30°C (86°F) and lows dropping to around 7°C (45°F).
JanFebMarAprMayJunJulAugSepOctNovDec696764615552515459646668
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.

March Precipitation in San Antonio

In San Antonio in March, the precipitation amount is 282 mm (11.1 in) spread over 24 days.

March Precipitation Trends in San Antonio

The chart displays monthly precipitation patterns in San Antonio, with values for each month alongside March’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how March’s conditions compare to those of other months. In San Antonio, March typically receives around 282 mm (11.1 inches) of precipitation spread over approximately 24 days.
JanFebMarAprMayJunJulAugSepOctNovDec22323728226715555455285201241272
Data source: Precipitation data for March generated using information from the Copernicus Climate Change Service.
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March Humidity in San Antonio

In San Antonio in March, humidity is 88%. With an average temperature of 18°C (65°F), this humidity feels like a warm blanket wrapping around you, making travel feel slightly sticky and the air thick, which can be quite tiring when exploring the area.

March Average Humidity in San Antonio

This chart illustrates the average monthly humidity levels in San Antonio, with March’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In March, average humidity in San Antonio is approximately 88%, 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 March generated using information from the Copernicus Climate Change Service.

March UV Index in San Antonio

In San Antonio in March, the maximum UV index is 14, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, so it's crucial to take precautions. For the detailed hourly UV index in San Antonio, you can check here.

Maximum UV Index Levels in San Antonio for March

The chart shows the monthly maximum UV Index (UVI) for San Antonio in March, 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 March, the maximum UV index in San Antonio typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec16151411867911141616
Data source: San Antonio March 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 March 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 March’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 March’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

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