September Weather in Coari, Brazil

Last updated: August 22, 2025

In September, the average temperature in Coari, Brazil is a warm 28°C (82°F), with a minimum of 23°C (74°F) and a maximum reaching 34°C (94°F). Expect a moderate amount of precipitation, averaging 111 mm (4.4 in) spread over 20 days. The climate features a comfortable 40% humidity, making for a pleasant experience overall.

September Temperature in Coari

In September in Coari, the average temperature is 28°C (82°F), with highs reaching up to 34°C (94°F) and lows dropping to around 23°C (74°F). This pleasant weather makes it an ideal time for outdoor activities and sightseeing, attracting travelers seeking warmth and sunshine.

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

The chart illustrates September temperature patterns in Coari, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Coari, September typically has an average temperature of 28°C (82°F), with highs reaching up to 34°C (94°F) and lows dropping to around 23°C (74°F).

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

September Precipitation in Coari

In Coari in September, the total precipitation amount is 111 mm (4.4 in) spread out over 20 days.

September Precipitation Trends in Coari

The chart displays monthly precipitation patterns in Coari, 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 Coari, September typically receives around 111 mm (4.4 inches) of precipitation spread over approximately 20 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 Coari

In Coari in September humidity is 40%. With an average temperature of 28°C (82°F), this humidity feels like a pleasant, warm embrace, making it ideal for comfortable outdoor activities and exploration, though you may want to stay hydrated as you travel.

September Average Humidity in Coari

This chart illustrates the average monthly humidity levels in Coari, 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 Coari is approximately 40%, 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 Coari

In Coari 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 Coari.

Maximum UV Index Levels in Coari for September

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

Data source: Coari 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 Coari Compares to Other Months

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

This table compares monthly weather conditions in Coari, 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)	247 mm (9.7 inches)	82%	extreme
February Weather	27°C (80°F)	290 mm (11.4 inches)	73%	extreme
March Weather	27°C (81°F)	322 mm (12.7 inches)	79%	extreme
April Weather	27°C (80°F)	373 mm (14.7 inches)	86%	extreme
May Weather	27°C (80°F)	298 mm (11.7 inches)	89%	extreme
June Weather	27°C (81°F)	149 mm (5.9 inches)	83%	extreme
July Weather	27°C (81°F)	83 mm (3.3 inches)	63%	extreme
August Weather	28°C (82°F)	77 mm (3.0 inches)	45%	extreme
September Weather	28°C (82°F)	111 mm (4.4 inches)	40%	extreme
October Weather	28°C (82°F)	170 mm (6.7 inches)	31%	extreme
November Weather	27°C (81°F)	254 mm (10.0 inches)	48%	extreme
December Weather	27°C (80°F)	311 mm (12.3 inches)	82%	extreme