September Weather in Janauba, Brazil

Last updated: August 22, 2025

In September, the average temperature in Janauba, Brazil hovers around 27°C (80°F). Expect a minimum of 14°C (58°F) and a scorching maximum of 40°C (105°F). With an average precipitation of just 3 mm (0.1 in) across 0 days, the air remains relatively dry, boasting an average humidity of 54%. Enjoy the warmth!

September Temperature in Janauba

In September in Janauba, the average temperature is 27°C (80°F). Maximum temperatures can soar to 40°C (105°F), while minimums can drop to as low as 14°C (58°F). Be sure to pack both light clothing for the heat and warmer layers for the cooler evenings when traveling.

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

The chart illustrates September temperature patterns in Janauba, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Janauba, September typically has an average temperature of 27°C (80°F), with highs reaching up to 40°C (105°F) and lows dropping to around 14°C (58°F).

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

September Precipitation in Janauba

In Janauba in September, the precipitation amount is 3 mm (0.1 in) during a total of 0 days.

September Precipitation Trends in Janauba

The chart displays monthly precipitation patterns in Janauba, 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 Janauba, September typically receives around 3 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 Janauba

In Janauba in September, humidity is 54%. With an average temperature of 27°C (80°F), this humidity feels like a warm, enveloping blanket, making traveling feel pleasantly comfortable yet slightly sticky.

September Average Humidity in Janauba

This chart illustrates the average monthly humidity levels in Janauba, 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 Janauba 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 Janauba

In Janauba 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 Janauba.

Maximum UV Index Levels in Janauba for September

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

Data source: Janauba 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 Janauba Compares to Other Months

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

This table compares monthly weather conditions in Janauba, 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)	56 mm (2.2 inches)	75%	extreme
February Weather	26°C (79°F)	129 mm (5.1 inches)	83%	extreme
March Weather	26°C (80°F)	96 mm (3.8 inches)	88%	extreme
April Weather	26°C (79°F)	36 mm (1.4 inches)	81%	extreme
May Weather	24°C (76°F)	8 mm (0.3 inches)	72%	extreme
June Weather	24°C (75°F)	1 mm (0.0 inches)	71%	very high
July Weather	23°C (73°F)	1 mm (0.0 inches)	66%	very high
August Weather	24°C (76°F)	1 mm (0.0 inches)	61%	extreme
September Weather	27°C (80°F)	3 mm (0.1 inches)	54%	extreme
October Weather	28°C (83°F)	58 mm (2.3 inches)	46%	extreme
November Weather	26°C (79°F)	143 mm (5.6 inches)	42%	extreme
December Weather	26°C (79°F)	186 mm (7.3 inches)	51%	extreme