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September Weather in San Juan de La Libertad, Peru

Last updated: August 27, 2025

In San Juan de La Libertad, Peru, the average temperature in September hovers around 6°C (42°F), with lows dipping to -1°C (30°F) and highs reaching up to 13°C (57°F). Expect approximately 100 mm (3.9 in) of precipitation over about 22 days, contributing to an average humidity level of 40%.

September Temperature in San Juan de La Libertad

In September in San Juan de La Libertad, the average temperature is 6°C (42°F). The maximum can reach 13°C (57°F), and the minimum can be as low as -1°C (30°F). Be prepared for cool weather and pack layers to stay comfortable during your travels.

September Weather in San Juan de La Libertad: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in San Juan de La Libertad, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Juan de La Libertad, September typically has an average temperature of 6°C (42°F), with highs reaching up to 13°C (57°F) and lows dropping to around -1°C (30°F).
JanFebMarAprMayJunJulAugSepOctNovDec444544444342414142444545
Data source: Temperature data for San Juan de La Libertad 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 San Juan de La Libertad

In San Juan de La Libertad in September, the total precipitation amount is 100 mm (3.9 in) spread over 22 days.

September Precipitation Trends in San Juan de La Libertad

The chart displays monthly precipitation patterns in San Juan de La Libertad, 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 San Juan de La Libertad, September typically receives around 100 mm (3.9 inches) of precipitation spread over approximately 22 days.
JanFebMarAprMayJunJulAugSepOctNovDec201249234122110675065100133166210
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in San Juan de La Libertad

In San Juan de La Libertad in September humidity is 40%. With an average temperature of 6°C (42°F), this humidity feels like a crisp and refreshing chill, perfect for layering up and enjoying outdoor adventures without the discomfort of stickiness.

September Average Humidity in San Juan de La Libertad

This chart illustrates the average monthly humidity levels in San Juan de La Libertad, 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 San Juan de La Libertad is approximately 40%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec91%90%91%89%85%65%47%38%40%56%76%90%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in San Juan de La Libertad

In San Juan de La Libertad 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 San Juan de La Libertad.

Maximum UV Index Levels in San Juan de La Libertad for September

The chart shows the monthly maximum UV Index (UVI) for San Juan de La Libertad 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 San Juan de La Libertad typically reaches 16, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec191919171412131416181817
Data source: San Juan de La Libertad 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 San Juan de La Libertad Compares to Other Months

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

This table compares monthly weather conditions in San Juan de La Libertad, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather7°C (45°F)201 mm (7.9 inches)91%extreme
February Weather7°C (45°F)249 mm (9.8 inches)90%extreme
March Weather7°C (45°F)234 mm (9.2 inches)91%extreme
April Weather7°C (44°F)121 mm (4.8 inches)89%extreme
May Weather6°C (43°F)110 mm (4.3 inches)85%extreme
June Weather5°C (42°F)67 mm (2.7 inches)65%extreme
July Weather5°C (41°F)50 mm (2.0 inches)47%extreme
August Weather5°C (41°F)65 mm (2.6 inches)38%extreme
September Weather6°C (42°F)100 mm (3.9 inches)40%extreme
October Weather6°C (44°F)133 mm (5.2 inches)56%extreme
November Weather7°C (45°F)166 mm (6.5 inches)76%extreme
December Weather7°C (45°F)210 mm (8.3 inches)90%extreme

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