September Weather in Una, Brazil

Last updated: August 22, 2025

In Una, Brazil, the average temperature in September hovers around 23°C (74°F), with a comfortable range where the minimum can drop to 18°C (64°F) and the maximum climbs to 29°C (84°F). Be prepared for some rain, as the area experiences about 81 mm (3.2 in) of precipitation spread over 18 days. With an average humidity level of 75%, you'll feel the refreshing yet humid embrace of this vibrant locale.

September Temperature in Una

In September in Una, the average temperature is 23°C (74°F), with maximums reaching 29°C (84°F) and minimums dropping as low as 18°C (64°F). This pleasant climate makes Una an ideal destination for travelers seeking comfortable weather.

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

The chart illustrates September temperature patterns in Una, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Una, September typically has an average temperature of 23°C (74°F), with highs reaching up to 29°C (84°F) and lows dropping to around 18°C (64°F).

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

September Precipitation in Una

In Una in September, the precipitation amount is 81 mm (3.2 in), occurring over the span of 18 days.

September Precipitation Trends in Una

The chart displays monthly precipitation patterns in Una, 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 Una, September typically receives around 81 mm (3.2 inches) of precipitation spread over approximately 18 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 Una

In Una in September, humidity is 75%. With an average temperature of 23°C (74°F), this humidity feels like a warm, heavy blanket wrapping around you, making it feel more sweltering than it actually is, which can be quite uncomfortable for traveling.

September Average Humidity in Una

This chart illustrates the average monthly humidity levels in Una, 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 Una is approximately 75%, 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 Una

In Una 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 Una.

Maximum UV Index Levels in Una for September

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

Data source: Una 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 Una Compares to Other Months

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

This table compares monthly weather conditions in Una, 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)	59 mm (2.3 inches)	76%	extreme
February Weather	26°C (80°F)	75 mm (2.9 inches)	79%	extreme
March Weather	26°C (79°F)	141 mm (5.6 inches)	83%	extreme
April Weather	25°C (78°F)	160 mm (6.3 inches)	84%	extreme
May Weather	24°C (76°F)	119 mm (4.7 inches)	83%	very high
June Weather	23°C (74°F)	109 mm (4.3 inches)	80%	very high
July Weather	22°C (73°F)	95 mm (3.7 inches)	78%	very high
August Weather	22°C (73°F)	94 mm (3.7 inches)	76%	extreme
September Weather	23°C (74°F)	81 mm (3.2 inches)	75%	extreme
October Weather	25°C (77°F)	125 mm (4.9 inches)	74%	extreme
November Weather	25°C (77°F)	203 mm (8.0 inches)	73%	extreme
December Weather	26°C (78°F)	196 mm (7.7 inches)	72%	extreme