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March Weather in San Marcos, Mexico

Last updated: August 27, 2025

In March, the average temperature in San Marcos, Mexico is a pleasant 18°C (64°F). However, temperatures can vary significantly, with a minimum of 3°C (37°F) and a maximum reaching 33°C (92°F). The month sees an average precipitation of 11 mm (0.4 in) over the course of 2 days, while the average humidity hovers around 53%.

March Temperature in San Marcos

In March in San Marcos, the average temperature is 18°C (64°F). Maximum temperatures can reach 33°C (92°F), while minimums can drop as low as 3°C (37°F). Be sure to pack layers and plan for a variety of weather conditions during your travels!

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

The chart illustrates March temperature patterns in San Marcos, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Marcos, March typically has an average temperature of 18°C (64°F), with highs reaching up to 33°C (92°F) and lows dropping to around 3°C (37°F).
JanFebMarAprMayJunJulAugSepOctNovDec545864687272696965645954
Data source: Temperature data for San Marcos 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 Marcos

In San Marcos in March, the precipitation amount is 11 mm (0.4 in) over the course of 2 days.

March Precipitation Trends in San Marcos

The chart displays monthly precipitation patterns in San Marcos, 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 Marcos, March typically receives around 11 mm (0.4 inches) of precipitation spread over approximately 2 days.
JanFebMarAprMayJunJulAugSepOctNovDec121011915521366712543109
Data source: Precipitation data for March generated using information from the Copernicus Climate Change Service.
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March Humidity in San Marcos

In San Marcos in March humidity is 53%. With an average temperature of 18°C (64°F), this humidity feels like a comfortable embrace, allowing for enjoyable outdoor exploration and leisurely strolls without overwhelming heat or discomfort.

March Average Humidity in San Marcos

This chart illustrates the average monthly humidity levels in San Marcos, 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 Marcos is approximately 53%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec70%62%53%48%52%64%73%71%82%83%82%84%
Data source: Humidity data for March generated using information from the Copernicus Climate Change Service.

March UV Index in San Marcos

In San Marcos 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 Marcos.

Maximum UV Index Levels in San Marcos for March

The chart shows the monthly maximum UV Index (UVI) for San Marcos 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 Marcos typically reaches 13, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec811131414141414131297
Data source: San Marcos 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 Marcos Compares to Other Months

Weather in San Marcos varies notably across the year, with each month offering distinct climate conditions. This page compares March’s weather to other months in San Marcos, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in San Marcos, showing how March’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather12°C (54°F)12 mm (0.5 inches)70%very high
February Weather15°C (59°F)10 mm (0.4 inches)62%extreme
March Weather18°C (64°F)11 mm (0.4 inches)53%extreme
April Weather20°C (68°F)9 mm (0.4 inches)48%extreme
May Weather22°C (73°F)15 mm (0.6 inches)52%extreme
June Weather22°C (73°F)52 mm (2.1 inches)64%extreme
July Weather20°C (69°F)136 mm (5.4 inches)73%extreme
August Weather21°C (70°F)67 mm (2.6 inches)71%extreme
September Weather18°C (65°F)125 mm (4.9 inches)82%extreme
October Weather18°C (64°F)43 mm (1.7 inches)83%extreme
November Weather15°C (59°F)10 mm (0.4 inches)82%very high
December Weather12°C (55°F)9 mm (0.3 inches)84%high

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