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September Weather in San Bartolo, Peru

Last updated: August 27, 2025

In San Bartolo, Peru, the average temperature in September hovers around 15°C (60°F), with a comfortable range from a minimum of 14°C (57°F) to a maximum of 17°C (62°F). Expect 17 mm (0.7 in) of precipitation spread over 3 days, and enjoy a moderate average humidity of 53%. Perfect weather for both exploring and relaxing!

September Temperature in San Bartolo

In September in San Bartolo, the average temperature is 15°C (60°F), with maximums reaching up to 17°C (62°F) and minimums dropping as low as 14°C (57°F). This mild climate makes San Bartolo an ideal destination for travelers seeking comfortable weather during their visit.

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

The chart illustrates September temperature patterns in San Bartolo, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Bartolo, September typically has an average temperature of 15°C (60°F), with highs reaching up to 17°C (62°F) and lows dropping to around 14°C (57°F).
JanFebMarAprMayJunJulAugSepOctNovDec687069676462616059606265
Data source: Temperature data for San Bartolo 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 Bartolo

In San Bartolo in September, the precipitation amount is 17 mm (0.7 in) over the course of 3 days.

September Precipitation Trends in San Bartolo

The chart displays monthly precipitation patterns in San Bartolo, 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 Bartolo, September typically receives around 17 mm (0.7 inches) of precipitation spread over approximately 3 days.
JanFebMarAprMayJunJulAugSepOctNovDec312921131623221917131317
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in San Bartolo

In San Bartolo in September humidity is 53%. With average temperature 15°C (60°F), this humidity feels like a refreshing embrace, making it ideal for exploring the sights without feeling too hot or sticky.

September Average Humidity in San Bartolo

This chart illustrates the average monthly humidity levels in San Bartolo, 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 Bartolo is approximately 53%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec89%89%90%89%83%69%56%51%53%68%82%87%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in San Bartolo

In San Bartolo in September, the maximum UV index reaches 13, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take protective measures. For detailed information, you can check the Hourly UV Index in San Bartolo.

Maximum UV Index Levels in San Bartolo for September

The chart shows the monthly maximum UV Index (UVI) for San Bartolo 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 Bartolo typically reaches 13, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec151414131110101113141514
Data source: San Bartolo 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 Bartolo Compares to Other Months

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

This table compares monthly weather conditions in San Bartolo, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather20°C (68°F)31 mm (1.2 inches)89%extreme
February Weather21°C (70°F)29 mm (1.2 inches)89%extreme
March Weather21°C (70°F)21 mm (0.8 inches)90%extreme
April Weather19°C (67°F)13 mm (0.5 inches)89%extreme
May Weather18°C (64°F)16 mm (0.6 inches)83%extreme
June Weather17°C (62°F)23 mm (0.9 inches)69%very high
July Weather16°C (61°F)22 mm (0.9 inches)56%very high
August Weather15°C (60°F)19 mm (0.7 inches)50%extreme
September Weather15°C (60°F)17 mm (0.7 inches)53%extreme
October Weather16°C (61°F)13 mm (0.5 inches)68%extreme
November Weather17°C (62°F)13 mm (0.5 inches)81%extreme
December Weather18°C (65°F)17 mm (0.7 inches)87%extreme

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