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August Weather in San Marcos, Peru

Last updated: August 27, 2025

In August, the average temperature in San Marcos, Peru hovers around 4°C (40°F), with a minimum of -7°C (20°F) and a pleasant maximum of 15°C (59°F). Expect 55 mm (2.2 in) of precipitation spread over about 14 days, accompanied by an average humidity level of 34%. Embrace the crisp air and prepare for those occasional rainy days!

August Temperature in San Marcos

In August in San Marcos, the average temperature is 4°C (40°F), with maximums reaching up to 15°C (59°F) and minimums dropping as low as -7°C (20°F). Be prepared for chilly weather, and bring layers to stay comfortable during your travels.

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 4°C (40°F), with highs reaching up to 15°C (59°F) and lows dropping to around -7°C (20°F).
JanFebMarAprMayJunJulAugSepOctNovDec414241414140393940414242
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 total precipitation amount is 55 mm (2.2 in) over a duration of 14 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 55 mm (2.2 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec209224272159101514155114179194232
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 34%. With an average temperature of 4°C (40°F), this humidity feels like a brisk morning stroll through a crisp, slightly damp landscape, making it a refreshing experience for travelers who enjoy cool weather while exploring the sights.

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 34%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%86%89%89%86%71%44%34%37%50%73%91%
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 reaches an alarming 15, which falls into the extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take precautions. For detailed information, you can check the Hourly UV Index in San Marcos.

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 15, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec212021191613151519191819
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 Weather5°C (42°F)209 mm (8.2 inches)88%extreme
February Weather6°C (42°F)224 mm (8.8 inches)86%extreme
March Weather5°C (42°F)272 mm (10.7 inches)89%extreme
April Weather5°C (42°F)159 mm (6.2 inches)89%extreme
May Weather5°C (41°F)101 mm (4.0 inches)86%extreme
June Weather5°C (41°F)51 mm (2.0 inches)71%extreme
July Weather4°C (39°F)41 mm (1.6 inches)44%extreme
August Weather4°C (40°F)55 mm (2.2 inches)34%extreme
September Weather4°C (40°F)114 mm (4.5 inches)37%extreme
October Weather5°C (41°F)179 mm (7.0 inches)50%extreme
November Weather6°C (42°F)194 mm (7.6 inches)73%extreme
December Weather6°C (42°F)232 mm (9.1 inches)91%extreme

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