October Weather in Alca, Peru

Last updated: August 27, 2025

In October, the average temperature in Alca, Peru hovers around 4°C (40°F). Be prepared for a chill, as the minimum can drop to -9°C (17°F), while the maximum may reach a pleasant 16°C (62°F). You'll likely encounter around 76 mm (3.0 in) of precipitation spread over 15 days, contributing to an average humidity of 67%.

October Temperature in Alca

In October in Alca, the average temperature is 4°C (40°F), with maximums reaching up to 16°C (62°F) and minimums dropping as low as -9°C (17°F). Travelers should be prepared for chilly conditions and varying temperatures, making it essential to pack layers for comfort.

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

The chart illustrates October temperature patterns in Alca, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Alca, October typically has an average temperature of 4°C (40°F), with highs reaching up to 16°C (62°F) and lows dropping to around -9°C (17°F).

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

October Precipitation in Alca

In Alca in October, the precipitation amount is 76 mm (3.0 in), recorded over a span of 15 days.

October Precipitation Trends in Alca

The chart displays monthly precipitation patterns in Alca, 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 Alca, October typically receives around 76 mm (3.0 inches) of precipitation spread over approximately 15 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 Alca

In Alca in October, humidity is 67%. With an average temperature of 4°C (40°F), this humidity feels like a chilly mist clinging to your skin, making outdoor activities somewhat uncomfortable and prompting you to seek warm shelter to truly enjoy your travels.

October Average Humidity in Alca

This chart illustrates the average monthly humidity levels in Alca, 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 Alca is approximately 67%, 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 Alca

In Alca in October, the maximum UV index reaches 19, which corresponds to an extreme exposure category. With a time to burn of just 10 minutes, it’s essential to take precautions. For detailed information, you can check the hourly UV index in Alca.

Maximum UV Index Levels in Alca for October

The chart shows the monthly maximum UV Index (UVI) for Alca 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 Alca typically reaches 19, which falls under the extreme exposure category.

Data source: Alca 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 Alca Compares to Other Months

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

This table compares monthly weather conditions in Alca, showing how October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	5°C (41°F)	225 mm (8.9 inches)	89%	extreme
February Weather	4°C (40°F)	240 mm (9.4 inches)	90%	extreme
March Weather	4°C (40°F)	253 mm (10.0 inches)	90%	extreme
April Weather	4°C (39°F)	113 mm (4.4 inches)	90%	extreme
May Weather	2°C (37°F)	46 mm (1.8 inches)	84%	extreme
June Weather	2°C (36°F)	13 mm (0.5 inches)	67%	extreme
July Weather	2°C (36°F)	12 mm (0.5 inches)	53%	extreme
August Weather	3°C (37°F)	13 mm (0.5 inches)	47%	extreme
September Weather	4°C (39°F)	47 mm (1.9 inches)	53%	extreme
October Weather	4°C (40°F)	76 mm (3.0 inches)	67%	extreme
November Weather	5°C (42°F)	81 mm (3.2 inches)	75%	extreme
December Weather	5°C (42°F)	136 mm (5.4 inches)	82%	extreme