September Weather in Serra, Brazil

Last updated: August 22, 2025

In September, the average temperature in Serra, Brazil hovers around 23°C (73°F), with lows dipping to 19°C (66°F) and highs reaching up to 30°C (85°F). Expect some rain, as the area receives an average of 56 mm (2.2 in) of precipitation over 9 days, while the average humidity stands at a comfortable 72%. Enjoy the mild climate and pack accordingly!

September Temperature in Serra

In September in Serra, the average temperature is 23°C (73°F). The maximum can reach 30°C (85°F), and the minimum can be as low as 19°C (66°F). This pleasant weather makes it an ideal time for outdoor activities and exploring the local attractions.

September Weather in Serra: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Serra, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Serra, September typically has an average temperature of 23°C (73°F), with highs reaching up to 30°C (85°F) and lows dropping to around 19°C (66°F).

Data source: Temperature data for Serra generated using information from the Copernicus Climate Change Service.

September Precipitation in Serra

In Serra in September, the precipitation amount is 56 mm (2.2 in) over a period of 9 days.

September Precipitation Trends in Serra

The chart displays monthly precipitation patterns in Serra, 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 Serra, September typically receives around 56 mm (2.2 inches) of precipitation spread over approximately 9 days.

Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

September Humidity in Serra

In Serra in September, humidity is 72%. With an average temperature of 23°C (73°F), this humidity feels like a warm embrace, making travel exhilarating yet slightly sticky, as the air clings to your skin and invites you to seek out cool, refreshing places to explore.

September Average Humidity in Serra

This chart illustrates the average monthly humidity levels in Serra, 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 Serra is approximately 72%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Serra

In Serra in September, the maximum UV index is 12, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, underscoring the importance of sun protection. For detailed information, you can check the Hourly UV Index in Serra.

Maximum UV Index Levels in Serra for September

The chart shows the monthly maximum UV Index (UVI) for Serra 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 Serra typically reaches 12, which falls under the extreme exposure category.

Data source: Serra 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 Serra Compares to Other Months

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

This table compares monthly weather conditions in Serra, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	26°C (79°F)	64 mm (2.5 inches)	80%	extreme
February Weather	26°C (79°F)	134 mm (5.3 inches)	85%	extreme
March Weather	26°C (79°F)	99 mm (3.9 inches)	86%	extreme
April Weather	25°C (77°F)	101 mm (4.0 inches)	85%	extreme
May Weather	23°C (74°F)	87 mm (3.4 inches)	82%	very high
June Weather	23°C (73°F)	42 mm (1.6 inches)	81%	high
July Weather	22°C (71°F)	36 mm (1.4 inches)	79%	very high
August Weather	22°C (71°F)	55 mm (2.2 inches)	75%	very high
September Weather	23°C (73°F)	56 mm (2.2 inches)	72%	extreme
October Weather	24°C (75°F)	117 mm (4.6 inches)	66%	extreme
November Weather	24°C (75°F)	183 mm (7.2 inches)	69%	extreme
December Weather	25°C (77°F)	146 mm (5.8 inches)	72%	extreme