September Weather in Viana, Brazil

Last updated: August 22, 2025

In September, the average temperature in Viana, Brazil is a pleasant 23°C (73°F), with a minimum of 15°C (60°F) and a maximum reaching up to 32°C (90°F). Expect about 65 mm (2.6 in) of precipitation spread over 8 days, contributing to an average humidity of 72%. Enjoy the warm and slightly humid climate!

September Temperature in Viana

In September in Viana, the average temperature is 23°C (73°F). The maximum can reach 32°C (90°F), while the minimum can be as low as 15°C (60°F). This pleasant weather makes it an ideal time for outdoor activities and sightseeing.

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

The chart illustrates September temperature patterns in Viana, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Viana, September typically has an average temperature of 23°C (73°F), with highs reaching up to 32°C (90°F) and lows dropping to around 15°C (60°F).

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

September Precipitation in Viana

In Viana in September, the total precipitation amount is 65 mm (2.6 in) spread over the course of 8 days.

September Precipitation Trends in Viana

The chart displays monthly precipitation patterns in Viana, 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 Viana, September typically receives around 65 mm (2.6 inches) of precipitation spread over approximately 8 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 Viana

In Viana in September, humidity is 72%. With an average temperature of 23°C (73°F), this humidity feels like a warm embrace, making travel exhilarating yet slightly sticky, as the air clings to your skin and invites you to seek out cool, refreshing places to explore.

September Average Humidity in Viana

This chart illustrates the average monthly humidity levels in Viana, 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 Viana is approximately 72%, 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 Viana

In Viana 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 Viana.

Maximum UV Index Levels in Viana for September

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

Data source: Viana 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 Viana Compares to Other Months

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

This table compares monthly weather conditions in Viana, 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 (80°F)	76 mm (3.0 inches)	80%	extreme
February Weather	26°C (79°F)	176 mm (6.9 inches)	85%	extreme
March Weather	26°C (79°F)	131 mm (5.2 inches)	86%	extreme
April Weather	24°C (76°F)	120 mm (4.7 inches)	85%	extreme
May Weather	22°C (73°F)	76 mm (3.0 inches)	82%	very high
June Weather	22°C (72°F)	44 mm (1.7 inches)	81%	high
July Weather	21°C (69°F)	31 mm (1.2 inches)	79%	very high
August Weather	21°C (70°F)	57 mm (2.2 inches)	75%	very high
September Weather	23°C (73°F)	65 mm (2.6 inches)	72%	extreme
October Weather	23°C (75°F)	123 mm (4.8 inches)	66%	extreme
November Weather	24°C (75°F)	185 mm (7.3 inches)	69%	extreme
December Weather	25°C (77°F)	188 mm (7.4 inches)	72%	extreme