September Weather in Acarau, Brazil

Last updated: August 22, 2025

In September, the average temperature in Acarau, Brazil is a warm 28°C (82°F), with temperatures ranging from a comfortable 23°C (75°F) to a sizzling 34°C (94°F). You'll encounter minimal precipitation, averaging only 3 mm (0.1 in) over 0 days, and an average humidity of 55%, making for ideal weather conditions to explore the vibrant surroundings.

September Temperature in Acarau

In September in Acarau, the average temperature is 28°C (82°F). Maximums can reach 34°C (94°F), while minimums can be as low as 23°C (75°F). This climate makes it an ideal destination for travelers seeking warm weather and outdoor activities.

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

The chart illustrates September temperature patterns in Acarau, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Acarau, September typically has an average temperature of 28°C (82°F), with highs reaching up to 34°C (94°F) and lows dropping to around 23°C (75°F).

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

September Precipitation in Acarau

In Acarau in September, the precipitation amount is 3 mm (0.1 in) during a total of 0 days.

September Precipitation Trends in Acarau

The chart displays monthly precipitation patterns in Acarau, 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 Acarau, September typically receives around 3 mm (0.1 inches) of precipitation spread over approximately 0 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 Acarau

In Acarau in September, humidity is 55%. With an average temperature of 28°C (82°F), this humidity feels like a warm embrace, creating a pleasant yet slightly sticky atmosphere that can make outdoor activities enjoyable but might require frequent hydration and occasional breaks in the shade.

September Average Humidity in Acarau

This chart illustrates the average monthly humidity levels in Acarau, 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 Acarau is approximately 55%, 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 Acarau

In Acarau 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 Acarau.

Maximum UV Index Levels in Acarau for September

The chart shows the monthly maximum UV Index (UVI) for Acarau 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 Acarau typically reaches 13, which falls under the extreme exposure category.

Data source: Acarau 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 Acarau Compares to Other Months

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

This table compares monthly weather conditions in Acarau, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	27°C (82°F)	89 mm (3.5 inches)	87%	extreme
February Weather	27°C (81°F)	243 mm (9.6 inches)	88%	extreme
March Weather	27°C (80°F)	247 mm (9.7 inches)	89%	extreme
April Weather	27°C (81°F)	336 mm (13.2 inches)	90%	extreme
May Weather	27°C (81°F)	143 mm (5.6 inches)	87%	extreme
June Weather	27°C (81°F)	36 mm (1.4 inches)	77%	extreme
July Weather	27°C (82°F)	19 mm (0.7 inches)	62%	extreme
August Weather	28°C (82°F)	4 mm (0.2 inches)	54%	extreme
September Weather	28°C (82°F)	3 mm (0.1 inches)	55%	extreme
October Weather	28°C (83°F)	9 mm (0.3 inches)	58%	extreme
November Weather	28°C (83°F)	15 mm (0.6 inches)	62%	extreme
December Weather	28°C (83°F)	42 mm (1.7 inches)	74%	extreme