August Weather in Santiago, Peru

Last updated: August 27, 2025

The average temperature in Santiago, Peru during August is 9°C (48°F). Expect minimums as low as -3°C (28°F) and highs reaching 20°C (68°F). With an average precipitation of 21 mm (0.8 in) spread over 7 days, the atmosphere is generally refreshing with an average humidity of 44%.

August Temperature in Santiago

In August in Santiago, the average temperature is 9°C (48°F). Maximums can reach 20°C (68°F) and minimums can be as low as -3°C (28°F). Be prepared for a wide range of temperatures when traveling, so pack accordingly to enjoy your trip!

August Weather in Santiago: Daily Temperature Highs, Lows, and Averages

The chart illustrates August temperature patterns in Santiago, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Santiago, August typically has an average temperature of 9°C (48°F), with highs reaching up to 20°C (68°F) and lows dropping to around -3°C (28°F).

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

August Precipitation in Santiago

In Santiago in August, the precipitation amount is 21 mm (0.8 in) over the course of 7 days.

August Precipitation Trends in Santiago

The chart displays monthly precipitation patterns in Santiago, 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 Santiago, August typically receives around 21 mm (0.8 inches) of precipitation spread over approximately 7 days.

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

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Millimeters (mm) Inches (in)

August Humidity in Santiago

In Santiago in August humidity is 44%. With an average temperature of 9°C (48°F), this humidity feels like a crisp freshness that invigorates you, making it quite pleasant for traveling as long as you dress warmly.

August Average Humidity in Santiago

This chart illustrates the average monthly humidity levels in Santiago, 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 Santiago is approximately 44%, offering insight into how humid the weather typically is during this month.

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

August UV Index in Santiago

In Santiago 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 Santiago, you can check here.

Maximum UV Index Levels in Santiago for August

The chart shows the monthly maximum UV Index (UVI) for Santiago 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 Santiago typically reaches 14, which falls under the extreme exposure category.

Data source: Santiago 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 Santiago Compares to Other Months

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

This table compares monthly weather conditions in Santiago, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	9°C (49°F)	170 mm (6.7 inches)	94%	extreme
February Weather	10°C (49°F)	230 mm (9.1 inches)	92%	extreme
March Weather	9°C (49°F)	180 mm (7.1 inches)	92%	extreme
April Weather	9°C (49°F)	90 mm (3.5 inches)	90%	extreme
May Weather	9°C (48°F)	30 mm (1.2 inches)	88%	extreme
June Weather	9°C (48°F)	15 mm (0.6 inches)	77%	extreme
July Weather	8°C (47°F)	19 mm (0.7 inches)	55%	extreme
August Weather	9°C (48°F)	21 mm (0.8 inches)	44%	extreme
September Weather	10°C (49°F)	34 mm (1.3 inches)	51%	extreme
October Weather	10°C (51°F)	86 mm (3.4 inches)	64%	extreme
November Weather	11°C (51°F)	128 mm (5.0 inches)	84%	extreme
December Weather	10°C (50°F)	214 mm (8.4 inches)	93%	extreme