October Weather in Santiago, Brazil

Last updated: August 22, 2025

In Santiago, Brazil, the average temperature in October hovers around 20°C (68°F), with a range that can dip as low as 7°C (46°F) and soar up to 36°C (96°F). Expect 174 mm (6.9 in) of precipitation spread over approximately 11 days, making the air quite humid with an average humidity of 77%. Prepare accordingly to enjoy your time in this unique climate!

October Temperature in Santiago

In October in Santiago, the average temperature is 20°C (68°F). Maximums can reach 36°C (96°F), while minimums can drop as low as 7°C (46°F). This varied climate makes Santiago an ideal destination for travelers seeking both warm days and cooler evenings.

October Weather in Santiago: Daily Temperature Highs, Lows, and Averages

The chart illustrates October temperature patterns in Santiago, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Santiago, October typically has an average temperature of 20°C (68°F), with highs reaching up to 36°C (96°F) and lows dropping to around 7°C (46°F).

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

October Precipitation in Santiago

In Santiago in October, the precipitation amount is 174 mm (6.9 in) occurring over the course of 11 days.

October Precipitation Trends in Santiago

The chart displays monthly precipitation patterns in Santiago, 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 Santiago, October typically receives around 174 mm (6.9 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 Santiago

In Santiago in October, humidity is 77%. With an average temperature of 20°C (68°F), this humidity feels like a warm, sticky embrace, making it essential for travelers to stay hydrated and take breaks in shaded areas to avoid feeling sluggish in the heat.

October Average Humidity in Santiago

This chart illustrates the average monthly humidity levels in Santiago, 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 Santiago is approximately 77%, 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 Santiago

In Santiago in October, the maximum UV index reaches 13, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take protective measures. For detailed information, you can check the Hourly UV Index in Santiago.

Maximum UV Index Levels in Santiago for October

The chart shows the monthly maximum UV Index (UVI) for Santiago 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 Santiago typically reaches 13, which falls under the extreme exposure category.

Data source: Santiago 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 Santiago Compares to Other Months

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

This table compares monthly weather conditions in Santiago, showing how October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	25°C (77°F)	176 mm (6.9 inches)	74%	extreme
February Weather	24°C (75°F)	101 mm (4.0 inches)	73%	extreme
March Weather	22°C (73°F)	146 mm (5.7 inches)	73%	extreme
April Weather	20°C (68°F)	104 mm (4.1 inches)	81%	very high
May Weather	16°C (61°F)	195 mm (7.7 inches)	87%	high
June Weather	15°C (59°F)	113 mm (4.4 inches)	84%	moderate
July Weather	14°C (57°F)	103 mm (4.1 inches)	80%	moderate
August Weather	15°C (60°F)	116 mm (4.6 inches)	71%	high
September Weather	18°C (64°F)	150 mm (5.9 inches)	74%	very high
October Weather	20°C (68°F)	174 mm (6.9 inches)	77%	extreme
November Weather	22°C (72°F)	143 mm (5.6 inches)	77%	extreme
December Weather	24°C (75°F)	89 mm (3.5 inches)	85%	extreme