September Weather in Passo Fundo, Brazil

Last updated: August 22, 2025

In Passo Fundo, Brazil during September, the average temperature hovers around 18°C (65°F), with a comfortable range that can dip to a minimum of 4°C (39°F) and peak at 33°C (91°F). Expect about 134 mm (5.3 in) of precipitation spread over 11 days, contributing to an average humidity of 74%. Perfect for those who enjoy a fresh and vibrant climate!

September Temperature in Passo Fundo

In September in Passo Fundo, the average temperature is 18°C (65°F), with maximums reaching up to 33°C (91°F) and minimums dropping as low as 4°C (39°F). This range makes it an ideal time for travelers to enjoy both warm days and cool evenings while exploring the area.

September Weather in Passo Fundo: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Passo Fundo, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Passo Fundo, September typically has an average temperature of 18°C (65°F), with highs reaching up to 33°C (91°F) and lows dropping to around 4°C (39°F).

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

September Precipitation in Passo Fundo

In Passo Fundo in September, the precipitation amount is 134 mm (5.3 in) spread over 11 days.

September Precipitation Trends in Passo Fundo

The chart displays monthly precipitation patterns in Passo Fundo, 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 Passo Fundo, September typically receives around 134 mm (5.3 inches) of precipitation spread over approximately 11 days.

Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

September Humidity in Passo Fundo

In Passo Fundo in September humidity is 74%. With an average temperature of 18°C (65°F), this humidity feels like a warm, sticky embrace that can make even short walks feel laborious, leading travelers to seek shade and refreshment more often.

September Average Humidity in Passo Fundo

This chart illustrates the average monthly humidity levels in Passo Fundo, 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 Passo Fundo is approximately 74%, 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 Passo Fundo

In Passo Fundo in September, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Passo Fundo.

Maximum UV Index Levels in Passo Fundo for September

The chart shows the monthly maximum UV Index (UVI) for Passo Fundo 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 Passo Fundo typically reaches 10, which falls under the very high exposure category.

Data source: Passo Fundo 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 Passo Fundo Compares to Other Months

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

This table compares monthly weather conditions in Passo Fundo, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	23°C (74°F)	152 mm (6.0 inches)	74%	extreme
February Weather	22°C (72°F)	161 mm (6.3 inches)	73%	extreme
March Weather	21°C (71°F)	118 mm (4.6 inches)	73%	extreme
April Weather	19°C (66°F)	108 mm (4.2 inches)	81%	very high
May Weather	16°C (60°F)	196 mm (7.7 inches)	87%	high
June Weather	14°C (58°F)	136 mm (5.3 inches)	84%	moderate
July Weather	14°C (57°F)	126 mm (5.0 inches)	80%	moderate
August Weather	15°C (59°F)	82 mm (3.2 inches)	71%	high
September Weather	18°C (65°F)	134 mm (5.3 inches)	74%	very high
October Weather	19°C (67°F)	170 mm (6.7 inches)	77%	extreme
November Weather	21°C (70°F)	150 mm (5.9 inches)	77%	extreme
December Weather	22°C (73°F)	120 mm (4.7 inches)	85%	extreme