nomadseason

March Weather in San Antonio, Puerto Rico

Last updated: August 31, 2025

In March, the average temperature in San Antonio, Puerto Rico hovers around 25°C (76°F), offering a pleasant climate. Expect a minimum of 21°C (70°F) and a maximum of 29°C (84°F). However, be prepared for some rain, as 72 mm (2.8 in) of precipitation typically falls over 17 days. The air tends to be quite humid with an average humidity of 74%, adding to the rich atmosphere.

March Temperature in San Antonio

In March in San Antonio, the average temperature is 25°C (76°F). Maximum can reach 29°C (84°F) and minimum can be as low as 21°C (70°F). This mild and pleasant weather makes it an ideal time for outdoor activities and sightseeing.

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 25°C (76°F), with highs reaching up to 29°C (84°F) and lows dropping to around 21°C (70°F).
JanFebMarAprMayJunJulAugSepOctNovDec767676777980818181807978
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.

March Precipitation in San Antonio

In San Antonio in March, the precipitation amount is 72 mm (2.8 in) spread over 17 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 72 mm (2.8 inches) of precipitation spread over approximately 17 days.
JanFebMarAprMayJunJulAugSepOctNovDec34397266978591971881279943
Data source: Precipitation data for March generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

March Humidity in San Antonio

In San Antonio in March, humidity is 74%. With an average temperature of 25°C (76°F), this humidity feels like you're enveloped in a warm, steamy embrace, making outdoor adventures quite challenging and ensuring that plenty of water and shade are essential for a comfortable experience.

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 74%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec76%75%74%75%75%77%80%80%79%78%78%76%
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 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 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 13, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec911131314131313131298
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 Weather25°C (77°F)34 mm (1.3 inches)76%very high
February Weather25°C (76°F)39 mm (1.5 inches)75%extreme
March Weather25°C (76°F)72 mm (2.8 inches)74%extreme
April Weather25°C (78°F)66 mm (2.6 inches)75%extreme
May Weather26°C (79°F)97 mm (3.8 inches)75%extreme
June Weather27°C (81°F)85 mm (3.3 inches)77%extreme
July Weather27°C (81°F)91 mm (3.6 inches)80%extreme
August Weather27°C (82°F)97 mm (3.8 inches)80%extreme
September Weather27°C (81°F)188 mm (7.4 inches)79%extreme
October Weather27°C (81°F)127 mm (5.0 inches)78%extreme
November Weather26°C (79°F)99 mm (3.9 inches)78%very high
December Weather25°C (78°F)43 mm (1.7 inches)76%very high

Compare San Antonio's Climate with Cities Worldwide