September Weather in Iacu, Brazil

Last updated: August 22, 2025

In September, the average temperature in Iacu, Brazil is a delightful 24°C (76°F). Temperatures can vary, with a minimum of 15°C (59°F) and a peak reaching up to 38°C (100°F). During this period, expect 17 mm (0.7 in) of precipitation spread over 5 days, accompanied by an average humidity level of 70%.

September Temperature in Iacu

In September in Iacu, the average temperature is 24°C (76°F). The maximum can reach 38°C (100°F), while the minimum can dip as low as 15°C (59°F). It's an ideal time for travelers looking to enjoy warm weather while exploring the local attractions.

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

The chart illustrates September temperature patterns in Iacu, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Iacu, September typically has an average temperature of 24°C (76°F), with highs reaching up to 38°C (100°F) and lows dropping to around 15°C (59°F).

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

September Precipitation in Iacu

In Iacu in September, the precipitation amount is 17 mm (0.7 in) over the course of 5 days.

September Precipitation Trends in Iacu

The chart displays monthly precipitation patterns in Iacu, 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 Iacu, September typically receives around 17 mm (0.7 inches) of precipitation spread over approximately 5 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 Iacu

In Iacu in September, humidity is 70%. With an average temperature of 24°C (76°F), this humidity feels like a warm, enveloping blanket that can make outdoor activities feel a bit sticky and heavier, so travelers should stay hydrated and take regular breaks to enjoy the sights comfortably.

September Average Humidity in Iacu

This chart illustrates the average monthly humidity levels in Iacu, 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 Iacu is approximately 70%, 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 Iacu

In Iacu 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 Iacu.

Maximum UV Index Levels in Iacu for September

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

Data source: Iacu 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 Iacu Compares to Other Months

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

This table compares monthly weather conditions in Iacu, 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 (80°F)	25 mm (1.0 inches)	73%	extreme
February Weather	27°C (82°F)	44 mm (1.7 inches)	80%	extreme
March Weather	27°C (81°F)	59 mm (2.3 inches)	89%	extreme
April Weather	26°C (79°F)	80 mm (3.2 inches)	88%	extreme
May Weather	25°C (77°F)	29 mm (1.1 inches)	85%	extreme
June Weather	24°C (75°F)	20 mm (0.8 inches)	85%	very high
July Weather	23°C (73°F)	20 mm (0.8 inches)	80%	very high
August Weather	23°C (74°F)	17 mm (0.7 inches)	76%	extreme
September Weather	24°C (76°F)	17 mm (0.7 inches)	70%	extreme
October Weather	26°C (79°F)	21 mm (0.8 inches)	63%	extreme
November Weather	26°C (79°F)	83 mm (3.3 inches)	58%	extreme
December Weather	26°C (79°F)	65 mm (2.6 inches)	59%	extreme