April Weather in San Marcos, Mexico

Last updated: August 27, 2025

In San Marcos, Mexico during April, the average temperature hovers around 21°C (70°F). You can expect a cool minimum of 6°C (43°F) and a scorching maximum of 34°C (94°F). Rainfall is minimal, with an average precipitation amount of just 1 mm (0.0 in) throughout 0 days, while average humidity sits comfortably at 42%.

April Temperature in San Marcos

In April in San Marcos, the average temperature is 21°C (70°F), with maximums reaching 34°C (94°F) and minimums dropping as low as 6°C (43°F). This varied climate makes it an ideal destination for travelers looking to experience a mix of warm days and cooler evenings.

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

The chart illustrates April 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, April typically has an average temperature of 21°C (70°F), with highs reaching up to 34°C (94°F) and lows dropping to around 6°C (43°F).

Data source: Temperature data for San Marcos generated using information from the Copernicus Climate Change Service.

April Precipitation in San Marcos

In San Marcos in April, the precipitation amount is 1 mm (0.0 in) during a span of 0 days.

April Precipitation Trends in San Marcos

The chart displays monthly precipitation patterns in San Marcos, with values for each month alongside April’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how April’s conditions compare to those of other months. In San Marcos, April typically receives around 1 mm (0.0 inches) of precipitation spread over approximately 0 days.

Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

April Humidity in San Marcos

In San Marcos in April humidity is 42%. With an average temperature of 21°C (70°F), this humidity feels like a comfortable embrace, perfect for exploring the sights without feeling overly sticky or weighed down, making it an ideal time for traveling.

April Average Humidity in San Marcos

This chart illustrates the average monthly humidity levels in San Marcos, with April’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In April, average humidity in San Marcos is approximately 42%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for April generated using information from the Copernicus Climate Change Service.

April UV Index in San Marcos

In San Marcos in April, 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 Marcos, you can check here.

Maximum UV Index Levels in San Marcos for April

The chart shows the monthly maximum UV Index (UVI) for San Marcos in April, 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 April, the maximum UV index in San Marcos typically reaches 14, which falls under the extreme exposure category.

Data source: San Marcos April 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 April 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 April’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 April’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	16°C (62°F)	13 mm (0.5 inches)	64%	very high
February Weather	17°C (64°F)	21 mm (0.8 inches)	57%	extreme
March Weather	20°C (68°F)	3 mm (0.1 inches)	46%	extreme
April Weather	21°C (70°F)	1 mm (0.0 inches)	42%	extreme
May Weather	23°C (73°F)	14 mm (0.5 inches)	51%	extreme
June Weather	23°C (73°F)	113 mm (4.4 inches)	74%	extreme
July Weather	21°C (70°F)	252 mm (9.9 inches)	79%	extreme
August Weather	21°C (71°F)	248 mm (9.8 inches)	81%	extreme
September Weather	21°C (70°F)	267 mm (10.5 inches)	84%	extreme
October Weather	21°C (70°F)	99 mm (3.9 inches)	75%	extreme
November Weather	19°C (66°F)	19 mm (0.7 inches)	71%	very high
December Weather	16°C (62°F)	15 mm (0.6 inches)	74%	very high