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August Weather in San Marcos, Peru

Last updated: August 27, 2025

In August, the average temperature in San Marcos, Peru is a pleasant 12°C (54°F). Expect a range where the minimum can dip to 3°C (37°F), while the maximum can reach a comfortable 23°C (74°F). Over the month, anticipate 42 mm (1.7 in) of precipitation spread across about 8 days, all accompanied by an average humidity level of 38%.

August Temperature in San Marcos

In August in San Marcos, the average temperature is 12°C (54°F). Maximum temperatures can reach 23°C (74°F), while minimums can dip as low as 3°C (37°F). Be sure to pack layers to enjoy your travels comfortably!

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

The chart illustrates August 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, August typically has an average temperature of 12°C (54°F), with highs reaching up to 23°C (74°F) and lows dropping to around 3°C (37°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.

August Precipitation in San Marcos

In San Marcos in August, the precipitation amount is 42 mm (1.7 in) over the course of 8 days.

August Precipitation Trends in San Marcos

The chart displays monthly precipitation patterns in San Marcos, with values for each month alongside August’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how August’s conditions compare to those of other months. In San Marcos, August typically receives around 42 mm (1.7 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec19224533518510348284277194219259
Data source: Precipitation data for August generated using information from the Copernicus Climate Change Service.
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August Humidity in San Marcos

In San Marcos in August humidity is 38%. With an average temperature of 12°C (54°F), this humidity feels like a refreshing coolness that can invigorate your senses while traveling, making it perfect for leisurely walks and outdoor explorations.

August Average Humidity in San Marcos

This chart illustrates the average monthly humidity levels in San Marcos, with August’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In August, average humidity in San Marcos is approximately 38%, 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 August generated using information from the Copernicus Climate Change Service.

August UV Index in San Marcos

In San Marcos in August, 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 August

The chart shows the monthly maximum UV Index (UVI) for San Marcos in August, 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 August, the maximum UV index in San Marcos typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec171819181513141417181616
Data source: San Marcos August 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 August 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 August’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 August’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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