January Weather in Arrentela, Portugal

Last updated: August 27, 2025

In January, the average temperature in Arrentela, Portugal is a mild 12°C (54°F). Expect a minimum of 4°C (40°F) and a comfortable maximum of 20°C (68°F). During this time, precipitation totals around 34 mm (1.3 in) spread over 4 days, contributing to an average humidity of 85%.

January Temperature in Arrentela

In January, in Arrentela, the average temperature is 12°C (54°F). The maximum can reach 20°C (68°F), while the minimum can drop to as low as 4°C (40°F). It’s advisable to pack layers to stay comfortable during your travels.

January Weather in Arrentela: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Arrentela, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Arrentela, January typically has an average temperature of 12°C (54°F), with highs reaching up to 20°C (68°F) and lows dropping to around 4°C (40°F).

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

January Precipitation in Arrentela

In Arrentela in January, the precipitation amount is 34 mm (1.3 in) over a span of 4 days.

January Precipitation Trends in Arrentela

The chart displays monthly precipitation patterns in Arrentela, with values for each month alongside January’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January’s conditions compare to those of other months. In Arrentela, January typically receives around 34 mm (1.3 inches) of precipitation spread over approximately 4 days.

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

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Millimeters (mm) Inches (in)

January Humidity in Arrentela

In Arrentela in January, humidity is 85%. With an average temperature of 12°C (54°F), this humidity feels like a heavy blanket wrapping around you, making traveling not only uncomfortable but also exhausting as the damp air clings to your skin and slows your movements.

January Average Humidity in Arrentela

This chart illustrates the average monthly humidity levels in Arrentela, with January’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In January, average humidity in Arrentela is approximately 85%, offering insight into how humid the weather typically is during this month.

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

January UV Index in Arrentela

In Arrentela in January, the maximum UV index is 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in Arrentela, you can check the information here.

Maximum UV Index Levels in Arrentela for January

The chart shows the monthly maximum UV Index (UVI) for Arrentela in January, 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 January, the maximum UV index in Arrentela typically reaches 3, which falls under the moderate exposure category.

Data source: Arrentela January 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 January Weather in Arrentela Compares to Other Months

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

This table compares monthly weather conditions in Arrentela, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	12°C (54°F)	34 mm (1.3 inches)	85%	moderate
February Weather	13°C (56°F)	53 mm (2.1 inches)	75%	moderate
March Weather	14°C (58°F)	66 mm (2.6 inches)	72%	high
April Weather	15°C (60°F)	63 mm (2.5 inches)	70%	very high
May Weather	18°C (64°F)	31 mm (1.2 inches)	70%	very high
June Weather	19°C (67°F)	8 mm (0.3 inches)	63%	extreme
July Weather	21°C (70°F)	4 mm (0.2 inches)	60%	very high
August Weather	21°C (71°F)	3 mm (0.1 inches)	60%	very high
September Weather	21°C (69°F)	18 mm (0.7 inches)	67%	very high
October Weather	19°C (66°F)	39 mm (1.5 inches)	74%	high
November Weather	15°C (60°F)	69 mm (2.7 inches)	83%	moderate
December Weather	14°C (57°F)	54 mm (2.1 inches)	85%	moderate