September Weather in Herval, Brazil

Last updated: August 22, 2025

In September, the average temperature in Herval, Brazil hovers around 15°C (60°F), with extremes ranging from a chilly 2°C (36°F) to a warm 31°C (87°F). Expect a precipitation amount of 158 mm (6.2 in) spread across about 11 days, contributing to an average humidity of 82%.

September Temperature in Herval

In September in Herval, the average temperature is 15°C (60°F). Maximums can reach 31°C (87°F), while minimums can be as low as 2°C (36°F). It's a great time to visit Herval if you enjoy mild weather with a chance of warmer days!

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

The chart illustrates September temperature patterns in Herval, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Herval, September typically has an average temperature of 15°C (60°F), with highs reaching up to 31°C (87°F) and lows dropping to around 2°C (36°F).

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

September Precipitation in Herval

In Herval in September, the total precipitation amount is 158 mm (6.2 in) spread over the course of 11 days.

September Precipitation Trends in Herval

The chart displays monthly precipitation patterns in Herval, 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 Herval, September typically receives around 158 mm (6.2 inches) of precipitation spread over approximately 11 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 Herval

In Herval in September humidity is 82%. With an average temperature of 15°C (60°F), this humidity feels like a heavy blanket wrapping around you, making outdoor activities feel sticky and draining, which can hinder your travel experience.

September Average Humidity in Herval

This chart illustrates the average monthly humidity levels in Herval, 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 Herval is approximately 82%, 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 Herval

In Herval in September, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Herval.

Maximum UV Index Levels in Herval for September

The chart shows the monthly maximum UV Index (UVI) for Herval 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 Herval typically reaches 9, which falls under the very high exposure category.

Data source: Herval 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 Herval Compares to Other Months

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

This table compares monthly weather conditions in Herval, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	24°C (75°F)	133 mm (5.3 inches)	71%	extreme
February Weather	23°C (73°F)	94 mm (3.7 inches)	74%	extreme
March Weather	21°C (70°F)	76 mm (3.0 inches)	76%	extreme
April Weather	19°C (66°F)	76 mm (3.0 inches)	81%	very high
May Weather	15°C (59°F)	94 mm (3.7 inches)	87%	moderate
June Weather	13°C (56°F)	98 mm (3.9 inches)	86%	moderate
July Weather	12°C (54°F)	109 mm (4.3 inches)	81%	moderate
August Weather	13°C (56°F)	118 mm (4.7 inches)	78%	high
September Weather	15°C (60°F)	158 mm (6.2 inches)	82%	very high
October Weather	17°C (63°F)	137 mm (5.4 inches)	82%	extreme
November Weather	20°C (67°F)	85 mm (3.3 inches)	79%	extreme
December Weather	22°C (71°F)	64 mm (2.5 inches)	77%	extreme