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September Weather in Santa Rosa, Peru

Last updated: August 27, 2025

In September, the average temperature in Santa Rosa, Peru is a comfortable 17°C (63°F), with a minimum of 10°C (50°F) and a pleasant maximum of 26°C (79°F). Expect a modest precipitation of 21 mm (0.8 in) over the course of about 5 days, and enjoy the typically 42% humidity that adds a refreshing touch to the atmosphere.

September Temperature in Santa Rosa

In September in Santa Rosa, the average temperature is 17°C (63°F). Maximums can reach 26°C (79°F), while minimums can drop to as low as 10°C (50°F). This makes it an ideal time for travelers to enjoy pleasant weather and outdoor activities.

September Weather in Santa Rosa: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Santa Rosa, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Santa Rosa, September typically has an average temperature of 17°C (63°F), with highs reaching up to 26°C (79°F) and lows dropping to around 10°C (50°F).
JanFebMarAprMayJunJulAugSepOctNovDec636363636362616163646564
Data source: Temperature data for Santa Rosa 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 Santa Rosa

In Santa Rosa in September, the precipitation amount is 21 mm (0.8 in) spread over a period of 5 days.

September Precipitation Trends in Santa Rosa

The chart displays monthly precipitation patterns in Santa Rosa, 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 Santa Rosa, September typically receives around 21 mm (0.8 inches) of precipitation spread over approximately 5 days.
JanFebMarAprMayJunJulAugSepOctNovDec751091521014026312621467961
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Santa Rosa

In Santa Rosa in September humidity is 42%. With an average temperature of 17°C (63°F), this humidity feels like a refreshing breeze that keeps you cool while exploring, making it an ideal time for outdoor adventures and sightseeing without the discomfort of excessive heat.

September Average Humidity in Santa Rosa

This chart illustrates the average monthly humidity levels in Santa Rosa, 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 Santa Rosa is approximately 42%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec83%81%88%85%78%62%44%38%42%58%69%82%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Santa Rosa

In Santa Rosa 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 Santa Rosa, you can check Hourly UV Index in Santa Rosa.

Maximum UV Index Levels in Santa Rosa for September

The chart shows the monthly maximum UV Index (UVI) for Santa Rosa 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 Santa Rosa typically reaches 17, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec161718171512131317161615
Data source: Santa Rosa 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 Santa Rosa Compares to Other Months

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

This table compares monthly weather conditions in Santa Rosa, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather17°C (63°F)75 mm (3.0 inches)83%extreme
February Weather17°C (64°F)109 mm (4.3 inches)81%extreme
March Weather17°C (63°F)152 mm (6.0 inches)88%extreme
April Weather17°C (63°F)101 mm (4.0 inches)85%extreme
May Weather17°C (63°F)40 mm (1.6 inches)78%extreme
June Weather17°C (62°F)26 mm (1.0 inches)62%extreme
July Weather16°C (61°F)31 mm (1.2 inches)44%extreme
August Weather16°C (62°F)26 mm (1.0 inches)38%extreme
September Weather17°C (63°F)21 mm (0.8 inches)42%extreme
October Weather18°C (65°F)46 mm (1.8 inches)58%extreme
November Weather18°C (65°F)79 mm (3.1 inches)69%extreme
December Weather18°C (64°F)61 mm (2.4 inches)82%extreme

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