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March Weather in San Antonio, Chile

Last updated: August 22, 2025

In March, the average temperature in San Antonio, Chile is a pleasant 16°C (60°F). Expect a cool minimum of 8°C (46°F) and a warm maximum of 25°C (78°F). With only 3 mm (0.1 in) of precipitation over 0 days, the weather remains dry and comfortable. The average humidity sits at a refreshing 46%, making it an ideal time to explore the great outdoors!

March Temperature in San Antonio

In March in San Antonio, the average temperature is 16°C (60°F), with maximums reaching 25°C (78°F) and minimums dropping to as low as 8°C (46°F). This mild climate makes it a great time for outdoor adventures and exploring the area's attractions.

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 16°C (60°F), with highs reaching up to 25°C (78°F) and lows dropping to around 8°C (46°F).
JanFebMarAprMayJunJulAugSepOctNovDec626260575451505053555960
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 3 mm (0.1 in) during a total of 0 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 3 mm (0.1 inches) of precipitation spread over approximately 0 days.
JanFebMarAprMayJunJulAugSepOctNovDec6339431074738161431
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 46%. With an average temperature of 16°C (60°F), this humidity feels like a refreshing embrace, making it comfortable for traveling as you can enjoy outdoor activities without feeling sticky or overheated.

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 46%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec41%41%46%52%64%71%75%73%56%61%52%39%
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 reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in San Antonio.

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 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec141311853468111314
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 Weather17°C (62°F)6 mm (0.2 inches)41%extreme
February Weather17°C (62°F)3 mm (0.1 inches)41%extreme
March Weather16°C (60°F)3 mm (0.1 inches)46%extreme
April Weather14°C (57°F)9 mm (0.4 inches)52%very high
May Weather12°C (54°F)43 mm (1.7 inches)64%moderate
June Weather11°C (51°F)107 mm (4.2 inches)71%moderate
July Weather10°C (50°F)47 mm (1.9 inches)75%moderate
August Weather10°C (51°F)38 mm (1.5 inches)73%high
September Weather11°C (53°F)16 mm (0.6 inches)56%very high
October Weather13°C (55°F)14 mm (0.6 inches)61%extreme
November Weather15°C (59°F)3 mm (0.1 inches)52%extreme
December Weather16°C (61°F)1 mm (0.0 inches)39%extreme

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