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September Weather in Aco, Peru

Last updated: August 27, 2025

In September, the average temperature in Aco, Peru is a mild 11°C (53°F), with lows reaching 3°C (38°F) and highs climbing up to 20°C (68°F). This month sees an average precipitation of 111 mm (4.4 in) spread over 20 days, resulting in a humidity level of around 62%. Be prepared for a mix of pleasant weather and occasional showers!

September Temperature in Aco

In September in Aco, the average temperature is 11°C (53°F). The maximum can reach 20°C (68°F), and the minimum can be as low as 3°C (38°F). This mild climate makes it a perfect time for travelers to explore the beauty of Aco comfortably.

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

The chart illustrates September temperature patterns in Aco, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Aco, September typically has an average temperature of 11°C (53°F), with highs reaching up to 20°C (68°F) and lows dropping to around 3°C (38°F).
JanFebMarAprMayJunJulAugSepOctNovDec515151515252525352525251
Data source: Temperature data for Aco 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.

September Precipitation in Aco

In Aco in September, the total precipitation amount is 111 mm (4.4 in) spread out over 20 days.

September Precipitation Trends in Aco

The chart displays monthly precipitation patterns in Aco, 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 Aco, September typically receives around 111 mm (4.4 inches) of precipitation spread over approximately 20 days.
JanFebMarAprMayJunJulAugSepOctNovDec237261384251160663939111220187291
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Aco

In Aco in September, humidity is 62%. With an average temperature of 11°C (53°F), this humidity feels like a cool, crisp breeze that adds a slight chill to the air, making it essential to dress in layers while exploring the scenery.

September Average Humidity in Aco

This chart illustrates the average monthly humidity levels in Aco, 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 Aco is approximately 62%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%89%90%89%84%73%55%53%62%82%89%91%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Aco

In Aco in September, the maximum UV index reaches an alarming 17, which falls under the extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to stay protected. For more details on the hourly UV index in Aco, you can check Hourly UV Index in Aco.

Maximum UV Index Levels in Aco for September

The chart shows the monthly maximum UV Index (UVI) for Aco 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 Aco typically reaches 17, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec181819181513141417171717
Data source: Aco 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 Aco Compares to Other Months

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

This table compares monthly weather conditions in Aco, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather10°C (51°F)237 mm (9.3 inches)91%extreme
February Weather11°C (51°F)261 mm (10.3 inches)89%extreme
March Weather10°C (51°F)383 mm (15.1 inches)89%extreme
April Weather11°C (51°F)251 mm (9.9 inches)88%extreme
May Weather11°C (52°F)160 mm (6.3 inches)84%extreme
June Weather11°C (52°F)66 mm (2.6 inches)73%extreme
July Weather11°C (52°F)39 mm (1.5 inches)55%extreme
August Weather11°C (53°F)39 mm (1.5 inches)53%extreme
September Weather11°C (53°F)111 mm (4.4 inches)62%extreme
October Weather11°C (52°F)220 mm (8.7 inches)82%extreme
November Weather11°C (52°F)186 mm (7.3 inches)89%extreme
December Weather11°C (52°F)291 mm (11.5 inches)91%extreme

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