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September Weather in Santo Andre, Brazil

Last updated: August 22, 2025

In September, the average temperature in Santo Andre, Brazil hovers around 20°C (68°F), providing a pleasant climate. However, temperatures can vary significantly, with a crisp minimum of 9°C (49°F) and a sweltering maximum of 36°C (96°F). Expect 69 mm (2.7 in) of precipitation over about 10 days, contributing to an average humidity level of 58%.

September Temperature in Santo Andre

In September in Santo Andre, the average temperature is 20°C (68°F). Maximum temperatures can reach as high as 36°C (96°F), while the minimum can drop to 9°C (49°F). Be prepared for a pleasant mix of warm days and cooler nights while traveling to Santo Andre this September.

September Weather in Santo Andre: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Santo Andre, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Santo Andre, September typically has an average temperature of 20°C (68°F), with highs reaching up to 36°C (96°F) and lows dropping to around 9°C (49°F).
JanFebMarAprMayJunJulAugSepOctNovDec747373686564626367686872
Data source: Temperature data for Santo Andre 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 Santo Andre

In Santo Andre in September, the precipitation amount is 69 mm (2.7 in) spread over a period of 10 days.

September Precipitation Trends in Santo Andre

The chart displays monthly precipitation patterns in Santo Andre, 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 Santo Andre, September typically receives around 69 mm (2.7 inches) of precipitation spread over approximately 10 days.
JanFebMarAprMayJunJulAugSepOctNovDec2802562491178681539569182169216
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Santo Andre

In Santo Andre in September humidity is 58%. With an average temperature of 20°C (68°F), this humidity feels like a refreshing embrace, creating a comfortable atmosphere for exploring the local sights and enjoying leisurely walks outdoors.

September Average Humidity in Santo Andre

This chart illustrates the average monthly humidity levels in Santo Andre, 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 Santo Andre is approximately 58%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%88%88%84%79%77%72%65%58%50%75%80%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Santo Andre

In Santo Andre in September, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Santo Andre.

Maximum UV Index Levels in Santo Andre for September

The chart shows the monthly maximum UV Index (UVI) for Santo Andre 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 Santo Andre typically reaches 11, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec16151211867911131415
Data source: Santo Andre 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 Santo Andre Compares to Other Months

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

This table compares monthly weather conditions in Santo Andre, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather24°C (75°F)280 mm (11.0 inches)88%extreme
February Weather23°C (73°F)256 mm (10.1 inches)88%extreme
March Weather23°C (73°F)249 mm (9.8 inches)87%extreme
April Weather20°C (69°F)117 mm (4.6 inches)84%extreme
May Weather18°C (65°F)86 mm (3.4 inches)79%very high
June Weather18°C (65°F)81 mm (3.2 inches)77%high
July Weather17°C (62°F)53 mm (2.1 inches)72%high
August Weather17°C (63°F)95 mm (3.8 inches)65%very high
September Weather20°C (68°F)69 mm (2.7 inches)58%extreme
October Weather20°C (69°F)182 mm (7.2 inches)50%extreme
November Weather20°C (69°F)169 mm (6.6 inches)75%extreme
December Weather22°C (72°F)216 mm (8.5 inches)80%extreme

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