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April Weather in San Marcos, Peru

Last updated: August 27, 2025

In San Marcos, Peru, the average temperature in April hovers around 12°C (54°F). You can expect a chilly minimum of 5°C (42°F), with highs reaching 20°C (68°F). Prepare for some wet weather, as 185 mm (7.3 in) of precipitation falls over approximately 23 days. With an average humidity of 85%, it’s a month where layering your outfits is key to staying comfortable!

April Temperature in San Marcos

In April in San Marcos, the average temperature is 12°C (54°F). The maximum can reach 20°C (68°F) and the minimum can be as low as 5°C (42°F). This mild climate makes San Marcos a pleasant destination for travelers looking to explore comfortably.

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 12°C (54°F), with highs reaching up to 20°C (68°F) and lows dropping to around 5°C (42°F).
JanFebMarAprMayJunJulAugSepOctNovDec545554545454535454545555
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.

April Precipitation in San Marcos

In San Marcos in April, the precipitation amount is 185 mm (7.3 in) spread over 23 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 185 mm (7.3 inches) of precipitation spread over approximately 23 days.
JanFebMarAprMayJunJulAugSepOctNovDec19224533518510348284277194219259
Data source: Precipitation data for April generated using information from the Copernicus Climate Change Service.
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April Humidity in San Marcos

In San Marcos in April, humidity is 85%. With an average temperature of 12°C (54°F), this humidity feels like a heavy blanket wrapping around you, making traveling not only uncomfortable but also exhausting as the damp air clings to your skin and slows your movements.

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 85%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec83%81%88%85%78%62%44%38%42%58%69%82%
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 18, which corresponds to an extreme exposure category. This means that the time to burn is just 10 minutes. For more detailed information, you can check the hourly UV index in San Marcos.

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 18, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec171819181513141417181616
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.
 TemperaturePrecipitationHumidityUV
January Weather12°C (55°F)192 mm (7.5 inches)83%extreme
February Weather13°C (55°F)245 mm (9.6 inches)81%extreme
March Weather12°C (54°F)335 mm (13.2 inches)88%extreme
April Weather12°C (54°F)185 mm (7.3 inches)85%extreme
May Weather12°C (54°F)103 mm (4.0 inches)78%extreme
June Weather12°C (54°F)48 mm (1.9 inches)62%extreme
July Weather12°C (53°F)28 mm (1.1 inches)44%extreme
August Weather12°C (54°F)42 mm (1.7 inches)38%extreme
September Weather12°C (54°F)77 mm (3.0 inches)42%extreme
October Weather12°C (54°F)194 mm (7.6 inches)58%extreme
November Weather13°C (55°F)219 mm (8.6 inches)69%extreme
December Weather13°C (55°F)259 mm (10.2 inches)82%extreme

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