September Weather in Alto Peru, Peru

Last updated: August 27, 2025

In September, the average temperature in Alto Peru, Peru hovers around 19°C (67°F), with daily highs reaching up to 29°C (84°F) and lows dipping to 12°C (54°F). This month brings a precipitation total of 132 mm (5.2 in) spread over 23 days, contributing to an average humidity of 42%. Embrace the mild weather while preparing for the occasional shower!

September Temperature in Alto Peru

In September in Alto Peru, the average temperature is 19°C (67°F). Maximum temperatures can reach 29°C (84°F), while minimums can dip as low as 12°C (54°F). Overall, it's a pleasant time to visit, making it ideal for outdoor activities and exploration.

September Weather in Alto Peru: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Alto Peru, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Alto Peru, September typically has an average temperature of 19°C (67°F), with highs reaching up to 29°C (84°F) and lows dropping to around 12°C (54°F).

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

September Precipitation in Alto Peru

In Alto Peru, in September, the precipitation amount is 132 mm (5.2 in) during 23 days, indicating a relatively wet period.

September Precipitation Trends in Alto Peru

The chart displays monthly precipitation patterns in Alto Peru, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Alto Peru, September typically receives around 132 mm (5.2 inches) of precipitation spread over approximately 23 days.

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

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Millimeters (mm) Inches (in)

September Humidity in Alto Peru

In Alto Peru in September humidity is 42%. With an average temperature of 19°C (67°F), this humidity feels like a comfortable embrace, perfect for leisurely strolls and exploring the sights without the heaviness often associated with higher humidity levels.

September Average Humidity in Alto Peru

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

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

September UV Index in Alto Peru

In Alto Peru in September, the maximum UV index is 16, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, making it crucial to take protective measures. For detailed information, you can refer to the Hourly UV Index in Alto Peru.

Maximum UV Index Levels in Alto Peru for September

The chart shows the monthly maximum UV Index (UVI) for Alto Peru in September, 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 September, the maximum UV index in Alto Peru typically reaches 16, which falls under the extreme exposure category.

Data source: Alto Peru September 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 September Weather in Alto Peru Compares to Other Months

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

This table compares monthly weather conditions in Alto Peru, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	20°C (68°F)	200 mm (7.9 inches)	80%	extreme
February Weather	20°C (68°F)	153 mm (6.0 inches)	76%	extreme
March Weather	20°C (68°F)	253 mm (10.0 inches)	81%	extreme
April Weather	20°C (68°F)	216 mm (8.5 inches)	86%	extreme
May Weather	20°C (67°F)	192 mm (7.6 inches)	86%	extreme
June Weather	19°C (66°F)	144 mm (5.7 inches)	70%	extreme
July Weather	18°C (65°F)	111 mm (4.4 inches)	47%	extreme
August Weather	19°C (66°F)	89 mm (3.5 inches)	37%	extreme
September Weather	19°C (67°F)	132 mm (5.2 inches)	42%	extreme
October Weather	20°C (68°F)	205 mm (8.1 inches)	62%	extreme
November Weather	20°C (69°F)	195 mm (7.7 inches)	76%	extreme
December Weather	20°C (69°F)	152 mm (6.0 inches)	89%	extreme