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September Weather in Santa Helena, Brazil

Last updated: August 22, 2025

In September, the average temperature in Santa Helena, Brazil is a warm 27°C (82°F). Expect a comfortable minimum of 22°C (72°F) and a sizzling maximum of 34°C (94°F). While you're soaking up the sun, note that precipitation averages around 26 mm (1.0 in), typically over 7 days, with an average humidity of 55%. Enjoy the delightful climate!

September Temperature in Santa Helena

In September in Santa Helena, the average temperature is 27°C (82°F). Maximum temperatures can reach as high as 34°C (94°F), while the minimum can drop to around 22°C (72°F). This makes Santa Helena a warm and inviting destination for travelers looking to enjoy pleasant weather.

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

The chart illustrates September temperature patterns in Santa Helena, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Santa Helena, September typically has an average temperature of 27°C (82°F), with highs reaching up to 34°C (94°F) and lows dropping to around 22°C (72°F).
JanFebMarAprMayJunJulAugSepOctNovDec807979798080798081828282
Data source: Temperature data for Santa Helena 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 Helena

In Santa Helena in September, the total precipitation amount is 26 mm (1.0 in) spread over a period of 7 days.

September Precipitation Trends in Santa Helena

The chart displays monthly precipitation patterns in Santa Helena, 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 Helena, September typically receives around 26 mm (1.0 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec1863714134162511408846263157102
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Santa Helena

In Santa Helena in September, humidity is 55%. With an average temperature of 27°C (82°F), this humidity feels like a warm, slightly sticky embrace, making it ideal for leisurely strolls in the early morning or late afternoon, but travelers should stay hydrated and seek shade during the peak hours of the day.

September Average Humidity in Santa Helena

This chart illustrates the average monthly humidity levels in Santa Helena, 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 Helena is approximately 55%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec92%90%88%93%91%84%74%61%55%56%61%82%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Santa Helena

In Santa Helena 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 Santa Helena.

Maximum UV Index Levels in Santa Helena for September

The chart shows the monthly maximum UV Index (UVI) for Santa Helena 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 Helena typically reaches 13, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec151416161312111313131313
Data source: Santa Helena 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 Helena Compares to Other Months

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

This table compares monthly weather conditions in Santa Helena, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather27°C (80°F)186 mm (7.3 inches)92%extreme
February Weather26°C (80°F)371 mm (14.6 inches)90%extreme
March Weather26°C (79°F)413 mm (16.3 inches)88%extreme
April Weather26°C (80°F)416 mm (16.4 inches)93%extreme
May Weather27°C (80°F)251 mm (9.9 inches)91%extreme
June Weather27°C (80°F)140 mm (5.5 inches)84%extreme
July Weather26°C (80°F)88 mm (3.5 inches)74%extreme
August Weather27°C (80°F)46 mm (1.8 inches)61%extreme
September Weather27°C (82°F)26 mm (1.0 inches)55%extreme
October Weather28°C (83°F)31 mm (1.2 inches)56%extreme
November Weather28°C (83°F)57 mm (2.2 inches)61%extreme
December Weather28°C (82°F)102 mm (4.0 inches)82%extreme

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