September Weather in Santa Isabel do Rio Negro, Brazil

Last updated: August 22, 2025

In Santa Isabel do Rio Negro, Brazil, the average temperature in September hovers around 27°C (81°F), with a comfortable range from a minimum of 22°C (72°F) to a balmy maximum of 35°C (95°F). Expect 166 mm (6.6 in) of precipitation over 24 days, complemented by an average humidity of 38%—perfect for enjoying the warmth with just a hint of tropical flair!

September Temperature in Santa Isabel do Rio Negro

In September in Santa Isabel do Rio Negro, the average temperature is 27°C (81°F). Maximums can reach 35°C (95°F) and minimums can drop to 22°C (72°F). This pleasant climate makes it an ideal time for travelers to explore and enjoy outdoor activities in Santa Isabel do Rio Negro.

September Weather in Santa Isabel do Rio Negro: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Santa Isabel do Rio Negro, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Santa Isabel do Rio Negro, September typically has an average temperature of 27°C (81°F), with highs reaching up to 35°C (95°F) and lows dropping to around 22°C (72°F).

Data source: Temperature data for Santa Isabel do Rio Negro generated using information from the Copernicus Climate Change Service.

September Precipitation in Santa Isabel do Rio Negro

In Santa Isabel do Rio Negro in September, the total precipitation amount is 166 mm (6.6 in) spread over 24 days.

September Precipitation Trends in Santa Isabel do Rio Negro

The chart displays monthly precipitation patterns in Santa Isabel do Rio Negro, 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 Santa Isabel do Rio Negro, September typically receives around 166 mm (6.6 inches) of precipitation spread over approximately 24 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 Santa Isabel do Rio Negro

In Santa Isabel do Rio Negro in September humidity is 38%. With an average temperature of 27°C (81°F), this humidity feels like a pleasantly warm embrace, making it ideal for outdoor adventures while still allowing for comfortable exploration without the sweltering heat that can accompany higher humidity levels.

September Average Humidity in Santa Isabel do Rio Negro

This chart illustrates the average monthly humidity levels in Santa Isabel do Rio Negro, 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 Santa Isabel do Rio Negro is approximately 38%, 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 Santa Isabel do Rio Negro

In Santa Isabel do Rio Negro in September, the maximum UV index is 14, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, so it's crucial to take precautions. For the detailed hourly UV index in Santa Isabel do Rio Negro, you can check here.

Maximum UV Index Levels in Santa Isabel do Rio Negro for September

The chart shows the monthly maximum UV Index (UVI) for Santa Isabel do Rio Negro 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 Santa Isabel do Rio Negro typically reaches 14, which falls under the extreme exposure category.

Data source: Santa Isabel do Rio Negro 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 Santa Isabel do Rio Negro Compares to Other Months

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

This table compares monthly weather conditions in Santa Isabel do Rio Negro, 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 (80°F)	202 mm (7.9 inches)	77%	extreme
February Weather	27°C (81°F)	192 mm (7.6 inches)	57%	extreme
March Weather	27°C (80°F)	312 mm (12.3 inches)	63%	extreme
April Weather	26°C (79°F)	330 mm (13.0 inches)	76%	extreme
May Weather	26°C (79°F)	422 mm (16.6 inches)	90%	extreme
June Weather	26°C (79°F)	289 mm (11.4 inches)	87%	extreme
July Weather	26°C (78°F)	238 mm (9.4 inches)	78%	extreme
August Weather	26°C (80°F)	167 mm (6.6 inches)	54%	extreme
September Weather	27°C (81°F)	166 mm (6.6 inches)	38%	extreme
October Weather	27°C (81°F)	165 mm (6.5 inches)	36%	extreme
November Weather	27°C (81°F)	221 mm (8.7 inches)	54%	extreme
December Weather	26°C (80°F)	290 mm (11.4 inches)	84%	extreme