October Weather in Alter do Chao, Portugal

Last updated: August 27, 2025

In October, the average temperature in Alter do Chao, Portugal hovers around 18°C (65°F). Expect a range between a chilly 5°C (40°F) and a sweltering 35°C (95°F). During this time, you can anticipate approximately 52 mm (2.1 in) of precipitation over about 5 days, contributing to an average humidity level of 74%.

October Temperature in Alter do Chao

In October in Alter do Chao, the average temperature is 18°C (65°F). Maximums can reach 35°C (95°F), while minimums can dip as low as 5°C (40°F). This variability in temperatures makes Alter do Chao an ideal destination for travelers seeking both warmth and cooler moments to enjoy.

October Weather in Alter do Chao: Daily Temperature Highs, Lows, and Averages

The chart illustrates October temperature patterns in Alter do Chao, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Alter do Chao, October typically has an average temperature of 18°C (65°F), with highs reaching up to 35°C (95°F) and lows dropping to around 5°C (40°F).

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

October Precipitation in Alter do Chao

In Alter do Chao in October, the precipitation amount is 52 mm (2.1 in) over a period of 5 days.

October Precipitation Trends in Alter do Chao

The chart displays monthly precipitation patterns in Alter do Chao, 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 Alter do Chao, October typically receives around 52 mm (2.1 inches) of precipitation spread over approximately 5 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

October Humidity in Alter do Chao

In Alter do Chao in October 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.

October Average Humidity in Alter do Chao

This chart illustrates the average monthly humidity levels in Alter do Chao, 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 Alter do Chao is approximately 74%, 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 Alter do Chao

In Alter do Chao in October, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Alter do Chao, you can refer to this Hourly UV Index in Alter do Chao.

Maximum UV Index Levels in Alter do Chao for October

The chart shows the monthly maximum UV Index (UVI) for Alter do Chao 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 Alter do Chao typically reaches 6, which falls under the high exposure category.

Data source: Alter do Chao 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 Alter do Chao Compares to Other Months

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

This table compares monthly weather conditions in Alter do Chao, showing how October’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	9°C (48°F)	40 mm (1.6 inches)	85%	moderate
February Weather	11°C (53°F)	52 mm (2.0 inches)	75%	moderate
March Weather	13°C (55°F)	92 mm (3.6 inches)	72%	high
April Weather	15°C (59°F)	84 mm (3.3 inches)	70%	very high
May Weather	19°C (66°F)	37 mm (1.4 inches)	70%	very high
June Weather	21°C (70°F)	14 mm (0.6 inches)	63%	extreme
July Weather	24°C (75°F)	4 mm (0.2 inches)	60%	very high
August Weather	24°C (76°F)	5 mm (0.2 inches)	60%	very high
September Weather	22°C (73°F)	29 mm (1.1 inches)	67%	very high
October Weather	18°C (65°F)	52 mm (2.1 inches)	74%	high
November Weather	13°C (55°F)	80 mm (3.2 inches)	83%	moderate
December Weather	11°C (52°F)	73 mm (2.9 inches)	85%	moderate