September Weather in Sao Joao de Meriti, Brazil

Last updated: August 22, 2025

In September, the average temperature in Sao Joao de Meriti, Brazil hovers around 23°C (74°F). Expect a range that can dip to a minimum of 13°C (56°F) and soar to a maximum of 38°C (100°F). During this month, you'll encounter approximately 67 mm (2.6 in) of precipitation over 9 days, contributing to an average humidity of 68%.

September Temperature in Sao Joao de Meriti

In September in Sao Joao de Meriti, the average temperature is 23°C (74°F). Maximum temperatures can reach 38°C (100°F), while the minimum can drop to as low as 13°C (56°F). This makes Sao Joao de Meriti an ideal destination for travelers looking to enjoy warm weather with a comfortable range of temperatures.

September Weather in Sao Joao de Meriti: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Sao Joao de Meriti, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sao Joao de Meriti, September typically has an average temperature of 23°C (74°F), with highs reaching up to 38°C (100°F) and lows dropping to around 13°C (56°F).

Data source: Temperature data for Sao Joao de Meriti generated using information from the Copernicus Climate Change Service.

September Precipitation in Sao Joao de Meriti

In Sao Joao de Meriti in September, the total precipitation amount is 67 mm (2.6 in), occurring over a span of 9 days.

September Precipitation Trends in Sao Joao de Meriti

The chart displays monthly precipitation patterns in Sao Joao de Meriti, 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 Sao Joao de Meriti, September typically receives around 67 mm (2.6 inches) of precipitation spread over approximately 9 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 Sao Joao de Meriti

In Sao Joao de Meriti in September, humidity is 68%. With an average temperature of 23°C (74°F), this humidity feels like a warm embrace, making traveling quite uncomfortable if you're not prepared. The air is thick and muggy, leaving you yearning for a cool breeze and frequent breaks in the shade.

September Average Humidity in Sao Joao de Meriti

This chart illustrates the average monthly humidity levels in Sao Joao de Meriti, 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 Sao Joao de Meriti is approximately 68%, 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 Sao Joao de Meriti

In Sao Joao de Meriti in September, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Sao Joao de Meriti.

Maximum UV Index Levels in Sao Joao de Meriti for September

The chart shows the monthly maximum UV Index (UVI) for Sao Joao de Meriti 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 Sao Joao de Meriti typically reaches 11, which falls under the extreme exposure category.

Data source: Sao Joao de Meriti 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 Sao Joao de Meriti Compares to Other Months

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

This table compares monthly weather conditions in Sao Joao de Meriti, 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)	179 mm (7.1 inches)	85%	extreme
February Weather	26°C (79°F)	242 mm (9.5 inches)	85%	extreme
March Weather	26°C (79°F)	207 mm (8.1 inches)	86%	extreme
April Weather	24°C (75°F)	103 mm (4.0 inches)	83%	very high
May Weather	22°C (71°F)	71 mm (2.8 inches)	81%	high
June Weather	21°C (71°F)	45 mm (1.8 inches)	80%	high
July Weather	20°C (68°F)	35 mm (1.4 inches)	76%	high
August Weather	20°C (69°F)	69 mm (2.7 inches)	73%	very high
September Weather	23°C (74°F)	67 mm (2.6 inches)	68%	extreme
October Weather	24°C (75°F)	129 mm (5.1 inches)	61%	extreme
November Weather	24°C (75°F)	210 mm (8.3 inches)	72%	extreme
December Weather	25°C (78°F)	234 mm (9.2 inches)	75%	extreme