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September Weather in Santa Rosa, Peru

Last updated: August 27, 2025

In September, the average temperature in Santa Rosa, Peru hovers around 16°C (62°F), with a minimum of 15°C (59°F) and a maximum of 18°C (64°F). The weather is fairly dry, with just 3 mm (0.1 in) of precipitation recorded over 0 days. Humidity levels are relatively high, averaging at 86%, making for a pleasantly mild atmosphere.

September Temperature in Santa Rosa

In September in Santa Rosa, the average temperature is 16°C (62°F). Maximums can reach 18°C (64°F) and minimums can be as low as 15°C (59°F). This mild weather makes it a great time for travelers to explore the area comfortably.

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 16°C (62°F), with highs reaching up to 18°C (64°F) and lows dropping to around 15°C (59°F).
JanFebMarAprMayJunJulAugSepOctNovDec707272686665636261626466
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 3 mm (0.1 in) during a total of 0 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 3 mm (0.1 inches) of precipitation spread over approximately 0 days.
JanFebMarAprMayJunJulAugSepOctNovDec9243413523337510
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 86%. With an average temperature of 16°C (62°F), this humidity feels like a muggy embrace that can make traveling slightly uncomfortable, as the stickiness clings to your skin and the air seems thick, enticing you to seek shade and refreshment more often.

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 86%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%85%85%87%89%85%83%84%87%87%87%87%
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.
JanFebMarAprMayJunJulAugSepOctNovDec141515141211111114141313
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 Weather21°C (70°F)9 mm (0.4 inches)88%extreme
February Weather22°C (73°F)24 mm (1.0 inches)85%extreme
March Weather22°C (73°F)34 mm (1.4 inches)85%extreme
April Weather20°C (69°F)13 mm (0.5 inches)87%extreme
May Weather19°C (66°F)5 mm (0.2 inches)89%extreme
June Weather18°C (65°F)2 mm (0.1 inches)85%extreme
July Weather17°C (64°F)3 mm (0.1 inches)82%extreme
August Weather17°C (62°F)3 mm (0.1 inches)84%extreme
September Weather16°C (62°F)3 mm (0.1 inches)86%extreme
October Weather17°C (62°F)6 mm (0.3 inches)87%extreme
November Weather18°C (64°F)5 mm (0.2 inches)87%extreme
December Weather19°C (67°F)10 mm (0.4 inches)87%extreme

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