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September Weather in Callalli, Peru

Last updated: August 27, 2025

In September, the average temperature in Callalli, Peru hovers around 6°C (42°F). Expect chilly nights with minimums dipping to -8°C (17°F), while daytime highs can reach up to 19°C (66°F). With an average humidity of 67% and a precipitation amount of 41 mm (1.6 in) spread over 10 days, it’s wise to be prepared for the wet weather.

September Temperature in Callalli

In September, in Callalli, the average temperature is 6°C (42°F). The maximum can reach up to 19°C (66°F), while the minimum can drop as low as -8°C (17°F). Travelers should be prepared for a wide range of temperatures, making layered clothing essential for comfort during their visit.

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

The chart illustrates September temperature patterns in Callalli, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Callalli, September typically has an average temperature of 6°C (42°F), with highs reaching up to 19°C (66°F) and lows dropping to around -8°C (17°F).
JanFebMarAprMayJunJulAugSepOctNovDec424241403938383942424443
Data source: Temperature data for Callalli 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 Callalli

In Callalli in September, the precipitation amount is 41 mm (1.6 in) spread over 10 days.

September Precipitation Trends in Callalli

The chart displays monthly precipitation patterns in Callalli, 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 Callalli, September typically receives around 41 mm (1.6 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec1961942018634121111416980138
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Callalli

In Callalli in September humidity is 67%. With an average temperature of 6°C (42°F), this humidity feels like a brisk and damp chill, making outdoor activities brisk but invigorating, though travelers should be prepared with warm clothing to stay comfortable while exploring.

September Average Humidity in Callalli

This chart illustrates the average monthly humidity levels in Callalli, 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 Callalli is approximately 67%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec92%93%92%91%87%76%57%51%67%77%85%90%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Callalli

In Callalli 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 Callalli, you can check Hourly UV Index in Callalli.

Maximum UV Index Levels in Callalli for September

The chart shows the monthly maximum UV Index (UVI) for Callalli 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 Callalli typically reaches 17, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec242121181411131517192022
Data source: Callalli 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 Callalli Compares to Other Months

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

This table compares monthly weather conditions in Callalli, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (42°F)196 mm (7.7 inches)92%extreme
February Weather5°C (42°F)194 mm (7.6 inches)93%extreme
March Weather5°C (42°F)201 mm (7.9 inches)92%extreme
April Weather4°C (40°F)86 mm (3.4 inches)91%extreme
May Weather4°C (39°F)34 mm (1.3 inches)87%extreme
June Weather3°C (38°F)12 mm (0.5 inches)76%extreme
July Weather3°C (38°F)11 mm (0.4 inches)57%extreme
August Weather4°C (40°F)11 mm (0.4 inches)51%extreme
September Weather6°C (42°F)41 mm (1.6 inches)67%extreme
October Weather6°C (43°F)69 mm (2.7 inches)77%extreme
November Weather7°C (45°F)79 mm (3.1 inches)85%extreme
December Weather6°C (44°F)138 mm (5.4 inches)90%extreme

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