September Weather in Acos, Peru

Last updated: August 27, 2025

In September, the average temperature in Acos, Peru is a cool 9°C (49°F). Expect a chilly minimum of -3°C (27°F) and a pleasant maximum of 21°C (71°F). With an average humidity of 67%, prepare for a touch of dampness, as you may encounter 38 mm (1.5 in) of precipitation over 13 days.

September Temperature in Acos

In September in Acos, the average temperature is 9°C (49°F), with a maximum reaching 21°C (71°F) and a minimum dropping as low as -3°C (27°F). Be prepared for a range of temperatures during your travels, so pack accordingly!

September Weather in Acos: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Acos, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Acos, September typically has an average temperature of 9°C (49°F), with highs reaching up to 21°C (71°F) and lows dropping to around -3°C (27°F).

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

September Precipitation in Acos

In Acos in September, the precipitation amount is 38 mm (1.5 in) over a span of 13 days.

September Precipitation Trends in Acos

The chart displays monthly precipitation patterns in Acos, 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 Acos, September typically receives around 38 mm (1.5 inches) of precipitation spread over approximately 13 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

September Humidity in Acos

In Acos in September, humidity is 67%. With an average temperature of 9°C (49°F), this humidity feels like a damp chill that clings to your skin, making it essential to bundle up if you're planning to explore the area.

September Average Humidity in Acos

This chart illustrates the average monthly humidity levels in Acos, 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 Acos is approximately 67%, 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 Acos

In Acos 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 Acos.

Maximum UV Index Levels in Acos for September

The chart shows the monthly maximum UV Index (UVI) for Acos 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 Acos typically reaches 16, which falls under the extreme exposure category.

Data source: Acos 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 Acos Compares to Other Months

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

This table compares monthly weather conditions in Acos, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	9°C (49°F)	171 mm (6.7 inches)	92%	extreme
February Weather	9°C (49°F)	224 mm (8.8 inches)	93%	extreme
March Weather	9°C (49°F)	188 mm (7.4 inches)	92%	extreme
April Weather	9°C (48°F)	78 mm (3.1 inches)	91%	extreme
May Weather	8°C (47°F)	31 mm (1.2 inches)	87%	extreme
June Weather	8°C (46°F)	14 mm (0.6 inches)	76%	extreme
July Weather	8°C (46°F)	19 mm (0.7 inches)	57%	extreme
August Weather	8°C (47°F)	17 mm (0.7 inches)	51%	extreme
September Weather	9°C (49°F)	38 mm (1.5 inches)	67%	extreme
October Weather	10°C (50°F)	90 mm (3.5 inches)	77%	extreme
November Weather	10°C (51°F)	138 mm (5.4 inches)	85%	extreme
December Weather	10°C (50°F)	198 mm (7.8 inches)	90%	extreme