October Weather in Arroio Grande, Brazil

Last updated: August 22, 2025

In Arroio Grande, Brazil, the average temperature in October is a pleasant 18°C (64°F). However, temperatures can range significantly, dipping to a cool 8°C (46°F) at night and reaching a warm 31°C (89°F) during the day. Expect 135 mm (5.3 in) of precipitation spread over 11 days, contributing to an average humidity of 82%. Whether you're basking in the warmth or seeking shelter from the rain, this month offers a diverse climate experience!

October Temperature in Arroio Grande

In October in Arroio Grande, the average temperature is 18°C (64°F). The maximum can reach 31°C (89°F), and the minimum can be as low as 8°C (46°F). This pleasant climate makes Arroio Grande a great destination for travelers seeking comfortable weather.

October Weather in Arroio Grande: Daily Temperature Highs, Lows, and Averages

The chart illustrates October temperature patterns in Arroio Grande, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Arroio Grande, October typically has an average temperature of 18°C (64°F), with highs reaching up to 31°C (89°F) and lows dropping to around 8°C (46°F).

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

October Precipitation in Arroio Grande

In Arroio Grande in October, the precipitation amount is 135 mm (5.3 in) over the course of 11 days.

October Precipitation Trends in Arroio Grande

The chart displays monthly precipitation patterns in Arroio Grande, with values for each month alongside October’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how October’s conditions compare to those of other months. In Arroio Grande, October typically receives around 135 mm (5.3 inches) of precipitation spread over approximately 11 days.

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

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Millimeters (mm) Inches (in)

October Humidity in Arroio Grande

In Arroio Grande in October humidity is 82%. With an average temperature of 18°C (64°F), this humidity feels like a warm, muggy embrace that can make exploring the area feel stifling, leaving travelers drenched in sweat and longing for respite in the shade.

October Average Humidity in Arroio Grande

This chart illustrates the average monthly humidity levels in Arroio Grande, with October’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In October, average humidity in Arroio Grande is approximately 82%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for October generated using information from the Copernicus Climate Change Service.

October UV Index in Arroio Grande

In Arroio Grande in October, 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 Arroio Grande.

Maximum UV Index Levels in Arroio Grande for October

The chart shows the monthly maximum UV Index (UVI) for Arroio Grande in October, 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 October, the maximum UV index in Arroio Grande typically reaches 11, which falls under the extreme exposure category.

Data source: Arroio Grande October 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 October Weather in Arroio Grande Compares to Other Months

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

This table compares monthly weather conditions in Arroio Grande, showing how October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	24°C (76°F)	135 mm (5.3 inches)	71%	extreme
February Weather	23°C (74°F)	98 mm (3.9 inches)	74%	extreme
March Weather	22°C (72°F)	74 mm (2.9 inches)	76%	extreme
April Weather	20°C (68°F)	79 mm (3.1 inches)	81%	very high
May Weather	16°C (61°F)	88 mm (3.5 inches)	87%	moderate
June Weather	14°C (57°F)	101 mm (4.0 inches)	86%	moderate
July Weather	13°C (55°F)	112 mm (4.4 inches)	81%	moderate
August Weather	14°C (57°F)	119 mm (4.7 inches)	78%	high
September Weather	16°C (61°F)	153 mm (6.0 inches)	82%	very high
October Weather	18°C (64°F)	135 mm (5.3 inches)	82%	extreme
November Weather	20°C (69°F)	80 mm (3.1 inches)	79%	extreme
December Weather	22°C (72°F)	72 mm (2.9 inches)	77%	extreme