September Weather in Carnaiba, Brazil

Last updated: August 22, 2025

In Carnaiba, Brazil during the month of September, the average temperature hovers around 25°C (77°F). Temperatures can range from a comfortable minimum of 16°C (61°F) to a sweltering maximum of 37°C (99°F). Expect some light rain with an average precipitation of 6 mm (0.3 in) over just 1 day, and enjoy the moderate humidity level of 68% that adds to the region's unique charm.

September Temperature in Carnaiba

In September in Carnaiba, the average temperature is 25°C (77°F), with daytime highs reaching up to 37°C (99°F) and nighttime lows dropping to as low as 16°C (61°F). This mild climate makes Carnaiba an ideal destination for travelers looking to enjoy pleasant weather and outdoor activities.

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

The chart illustrates September temperature patterns in Carnaiba, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Carnaiba, September typically has an average temperature of 25°C (77°F), with highs reaching up to 37°C (99°F) and lows dropping to around 16°C (61°F).

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

September Precipitation in Carnaiba

In Carnaiba in September, the precipitation amount is 6 mm (0.3 in) over the course of 1 day.

September Precipitation Trends in Carnaiba

The chart displays monthly precipitation patterns in Carnaiba, 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 Carnaiba, September typically receives around 6 mm (0.3 inches) of precipitation spread over approximately 1 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 Carnaiba

In Carnaiba in September, humidity is 68%. With an average temperature of 25°C (77°F), this humidity feels like a warm embrace that can quickly become stifling for traveling, making outdoor activities feel more strenuous and the air thick and heavy.

September Average Humidity in Carnaiba

This chart illustrates the average monthly humidity levels in Carnaiba, 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 Carnaiba is approximately 68%, 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 Carnaiba

In Carnaiba 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 Carnaiba, you can check here.

Maximum UV Index Levels in Carnaiba for September

The chart shows the monthly maximum UV Index (UVI) for Carnaiba 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 Carnaiba typically reaches 14, which falls under the extreme exposure category.

Data source: Carnaiba 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 Carnaiba Compares to Other Months

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

This table compares monthly weather conditions in Carnaiba, 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)	19 mm (0.7 inches)	84%	extreme
February Weather	28°C (82°F)	50 mm (2.0 inches)	89%	extreme
March Weather	27°C (81°F)	81 mm (3.2 inches)	91%	extreme
April Weather	26°C (79°F)	49 mm (1.9 inches)	92%	extreme
May Weather	25°C (77°F)	33 mm (1.3 inches)	90%	extreme
June Weather	23°C (74°F)	22 mm (0.9 inches)	87%	extreme
July Weather	22°C (73°F)	24 mm (0.9 inches)	79%	extreme
August Weather	23°C (74°F)	12 mm (0.5 inches)	74%	extreme
September Weather	25°C (77°F)	6 mm (0.3 inches)	68%	extreme
October Weather	27°C (81°F)	3 mm (0.1 inches)	62%	extreme
November Weather	28°C (82°F)	15 mm (0.6 inches)	55%	extreme
December Weather	28°C (82°F)	26 mm (1.0 inches)	58%	extreme