September Weather in Januaria, Brazil

Last updated: August 22, 2025

In September, the average temperature in Januaria, Brazil hovers around a pleasant 27°C (81°F). However, be prepared for some variability, as temperatures can dip to a minimum of 16°C (61°F) and soar up to a scorching 40°C (105°F). With a mere 2 mm (0.1 in) of precipitation spread across 0 days, the weather remains mostly dry. Enjoy the comfort of moderate 54% humidity, making it an ideal time for outdoor activities!

September Temperature in Januaria

In September in Januaria, the average temperature is 27°C (81°F), with maximums soaring up to 40°C (105°F) and minimums dropping to as low as 16°C (61°F). Be prepared for warm days and cooler evenings while enjoying your travels in Januaria.

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

The chart illustrates September temperature patterns in Januaria, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Januaria, September typically has an average temperature of 27°C (81°F), with highs reaching up to 40°C (105°F) and lows dropping to around 16°C (61°F).

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

September Precipitation in Januaria

In Januaria in September, the precipitation amount is 2 mm (0.1 in) during a span of 0 days.

September Precipitation Trends in Januaria

The chart displays monthly precipitation patterns in Januaria, 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 Januaria, September typically receives around 2 mm (0.1 inches) of precipitation spread over approximately 0 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 Januaria

In Januaria in September humidity is 54%. With an average temperature of 27°C (81°F), this humidity feels like a warm, tropical embrace, making it ideal for leisurely strolls and outdoor adventures, though you might want to stay hydrated and take breaks in shaded spots to fully enjoy the experience.

September Average Humidity in Januaria

This chart illustrates the average monthly humidity levels in Januaria, 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 Januaria is approximately 54%, 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 Januaria

In Januaria 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 Januaria.

Maximum UV Index Levels in Januaria for September

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

Data source: Januaria 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 Januaria Compares to Other Months

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

This table compares monthly weather conditions in Januaria, 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 (81°F)	79 mm (3.1 inches)	75%	extreme
February Weather	26°C (79°F)	155 mm (6.1 inches)	83%	extreme
March Weather	26°C (80°F)	101 mm (4.0 inches)	88%	extreme
April Weather	26°C (79°F)	35 mm (1.4 inches)	81%	extreme
May Weather	25°C (77°F)	10 mm (0.4 inches)	72%	very high
June Weather	24°C (75°F)	1 mm (0.0 inches)	71%	very high
July Weather	23°C (74°F)	1 mm (0.0 inches)	66%	very high
August Weather	25°C (77°F)	1 mm (0.0 inches)	61%	extreme
September Weather	27°C (81°F)	2 mm (0.1 inches)	54%	extreme
October Weather	29°C (84°F)	58 mm (2.3 inches)	46%	extreme
November Weather	26°C (80°F)	146 mm (5.8 inches)	42%	extreme
December Weather	26°C (79°F)	172 mm (6.8 inches)	51%	extreme