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September Weather in Santa Rosa, Peru

Last updated: August 27, 2025

In Santa Rosa, Peru, the average temperature in September hovers around 25°C (78°F), offering a pleasant climate for outdoor activities. You'll experience minimum temperatures dropping to 17°C (64°F), while highs can reach up to 36°C (97°F). Throughout the month, anticipate approximately 95 mm (3.7 in) of precipitation spread over 12 days, complemented by an average humidity of 42%. Enjoy the balance of warmth and refreshing rains!

September Temperature in Santa Rosa

In September in Santa Rosa, the average temperature is 25°C (78°F). The maximum can reach 36°C (97°F), and the minimum can be as low as 17°C (64°F). This comfortable climate makes it an ideal time for travelers to explore the beauty of Santa Rosa.

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 25°C (78°F), with highs reaching up to 36°C (97°F) and lows dropping to around 17°C (64°F).
JanFebMarAprMayJunJulAugSepOctNovDec777776767675747677777877
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 95 mm (3.7 in) over the course of 12 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 95 mm (3.7 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec2592533562542231751297895189303264
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 25°C (78°F), this humidity feels like a comfortable embrace, ideal for exploring the sights and enjoying outdoor activities without the discomfort of excessive heat or stickiness.

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.
JanFebMarAprMayJunJulAugSepOctNovDec80%76%81%86%86%70%47%37%42%62%76%89%
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 is 14, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, so it's crucial to take precautions. For the detailed hourly UV index in Santa Rosa, you can check here.

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 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec151616161312111214151414
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 Weather25°C (77°F)259 mm (10.2 inches)80%extreme
February Weather25°C (77°F)253 mm (10.0 inches)76%extreme
March Weather25°C (77°F)356 mm (14.0 inches)81%extreme
April Weather25°C (77°F)254 mm (10.0 inches)86%extreme
May Weather24°C (76°F)223 mm (8.8 inches)86%extreme
June Weather24°C (75°F)175 mm (6.9 inches)70%extreme
July Weather24°C (75°F)129 mm (5.1 inches)47%extreme
August Weather24°C (76°F)78 mm (3.1 inches)37%extreme
September Weather25°C (78°F)95 mm (3.7 inches)42%extreme
October Weather25°C (78°F)189 mm (7.5 inches)62%extreme
November Weather25°C (78°F)302 mm (11.9 inches)76%extreme
December Weather25°C (78°F)264 mm (10.4 inches)89%extreme

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