September Weather in Unai, Brazil

Last updated: August 22, 2025

In Unai, Brazil, the average temperature in September hovers around 25°C (77°F), with a comfortable humidity level of 42%. Expect temperatures to range from a cool 13°C (56°F) at night to a sweltering 37°C (99°F) during the day. Additionally, you might encounter light precipitation, with an average of 6 mm (0.3 in) expected over the course of 1 day.

September Temperature in Unai

In September in Unai, the average temperature is 25°C (77°F), with maximums reaching 37°C (99°F) and minimums dropping to as low as 13°C (56°F). This climate makes Unai an ideal destination for travelers seeking pleasant weather with a mix of warm days and cooler evenings.

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

The chart illustrates September temperature patterns in Unai, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Unai, 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 13°C (56°F).

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

September Precipitation in Unai

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

September Precipitation Trends in Unai

The chart displays monthly precipitation patterns in Unai, 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 Unai, 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 Unai

In Unai in September, humidity is 42%. With an average temperature of 25°C (77°F), this humidity feels like a comfortable embrace, making it pleasant for traveling and exploring the sights without feeling overwhelmed by heat or stickiness.

September Average Humidity in Unai

This chart illustrates the average monthly humidity levels in Unai, 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 Unai is approximately 42%, 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 Unai

In Unai 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 Unai.

Maximum UV Index Levels in Unai for September

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

Data source: Unai 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 Unai Compares to Other Months

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

This table compares monthly weather conditions in Unai, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	25°C (77°F)	91 mm (3.6 inches)	83%	extreme
February Weather	24°C (76°F)	219 mm (8.6 inches)	88%	extreme
March Weather	24°C (76°F)	147 mm (5.8 inches)	89%	extreme
April Weather	24°C (75°F)	69 mm (2.7 inches)	78%	extreme
May Weather	22°C (72°F)	23 mm (0.9 inches)	67%	very high
June Weather	21°C (70°F)	1 mm (0.0 inches)	61%	very high
July Weather	20°C (69°F)	0 mm (0.0 inches)	58%	very high
August Weather	22°C (73°F)	4 mm (0.2 inches)	51%	extreme
September Weather	25°C (77°F)	6 mm (0.3 inches)	42%	extreme
October Weather	26°C (80°F)	77 mm (3.0 inches)	31%	extreme
November Weather	24°C (76°F)	193 mm (7.6 inches)	48%	extreme
December Weather	24°C (76°F)	210 mm (8.3 inches)	61%	extreme