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September Weather in San Cristobal, Peru

Last updated: August 27, 2025

In September, the average temperature in San Cristobal, Peru hovers around 16°C (62°F). Expect a minimum of 8°C (46°F) and a pleasant maximum of 25°C (78°F). During this month, the area experiences an average precipitation of 48 mm (1.9 in) spread over about 13 days, with humidity levels dipping to around 49%. Enjoy the balanced weather as you explore!

September Temperature in San Cristobal

In September in San Cristobal, the average temperature is 16°C (62°F). Maximum temperatures can reach 25°C (78°F), while minimums can dip as low as 8°C (46°F). This mild climate makes San Cristobal an ideal destination for travelers looking to enjoy comfortable weather while exploring the area.

September Weather in San Cristobal: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in San Cristobal, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Cristobal, September typically has an average temperature of 16°C (62°F), with highs reaching up to 25°C (78°F) and lows dropping to around 8°C (46°F).
JanFebMarAprMayJunJulAugSepOctNovDec626262626261616161616162
Data source: Temperature data for San Cristobal 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 Cristobal

In San Cristobal in September, the total precipitation amount is 48 mm (1.9 in) spread over 13 days.

September Precipitation Trends in San Cristobal

The chart displays monthly precipitation patterns in San Cristobal, 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 Cristobal, September typically receives around 48 mm (1.9 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec19826440023813055393448149157199
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in San Cristobal

In San Cristobal in September, humidity is 49%. With an average temperature of 16°C (62°F), this humidity feels like a refreshing yet slightly crisp embrace, making it ideal for enjoying outdoor activities and leisurely explorations without feeling too sticky or heavy.

September Average Humidity in San Cristobal

This chart illustrates the average monthly humidity levels in San Cristobal, 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 Cristobal is approximately 49%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%80%85%87%88%73%51%44%49%71%77%85%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in San Cristobal

In San Cristobal 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 Cristobal.

Maximum UV Index Levels in San Cristobal for September

The chart shows the monthly maximum UV Index (UVI) for San Cristobal 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 Cristobal typically reaches 16, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec161617171412121316161514
Data source: San Cristobal 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 Cristobal Compares to Other Months

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

This table compares monthly weather conditions in San Cristobal, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather17°C (62°F)198 mm (7.8 inches)82%extreme
February Weather17°C (62°F)264 mm (10.4 inches)80%extreme
March Weather17°C (62°F)400 mm (15.8 inches)85%extreme
April Weather17°C (62°F)238 mm (9.4 inches)87%extreme
May Weather17°C (62°F)130 mm (5.1 inches)88%extreme
June Weather16°C (61°F)55 mm (2.2 inches)73%extreme
July Weather16°C (61°F)39 mm (1.5 inches)51%extreme
August Weather16°C (61°F)34 mm (1.3 inches)44%extreme
September Weather16°C (62°F)48 mm (1.9 inches)49%extreme
October Weather16°C (61°F)149 mm (5.9 inches)71%extreme
November Weather16°C (61°F)157 mm (6.2 inches)77%extreme
December Weather16°C (62°F)199 mm (7.8 inches)85%extreme

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