December Weather in Estoi, Portugal

Last updated: August 27, 2025

In December, the average temperature in Estoi, Portugal is a pleasant 15°C (58°F). Expect a minimum temperature of 9°C (48°F) and a maximum of 20°C (68°F). During this month, precipitation averages around 47 mm (1.9 in) over 5 days, while the average humidity hovers at a comfortable 81%.

December Temperature in Estoi

In December in Estoi, the average temperature is 15°C (58°F), with maximums reaching 20°C (68°F) and minimums dropping to as low as 9°C (48°F). This climate makes it an ideal time for travelers to enjoy outdoor activities while dressing in layers for fluctuating temperatures.

December Weather in Estoi: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Estoi, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Estoi, December typically has an average temperature of 15°C (58°F), with highs reaching up to 20°C (68°F) and lows dropping to around 9°C (48°F).

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

December Precipitation in Estoi

In Estoi in December, the precipitation amount is 47 mm (1.9 in) spread over a duration of 5 days.

December Precipitation Trends in Estoi

The chart displays monthly precipitation patterns in Estoi, with values for each month alongside December’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how December’s conditions compare to those of other months. In Estoi, December typically receives around 47 mm (1.9 inches) of precipitation spread over approximately 5 days.

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

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Millimeters (mm) Inches (in)

December Humidity in Estoi

In Estoi in December humidity is 81%. With an average temperature of 15°C (58°F), this humidity feels like a mild, damp embrace that can make outdoor activities feel heavy and exhausting, requiring frequent breaks in the shade or a cool beverage to refresh yourself.

December Average Humidity in Estoi

This chart illustrates the average monthly humidity levels in Estoi, with December’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In December, average humidity in Estoi is approximately 81%, offering insight into how humid the weather typically is during this month.

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

December UV Index in Estoi

In Estoi in December, 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 Estoi, you can check the information here.

Maximum UV Index Levels in Estoi for December

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

Data source: Estoi December 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 December Weather in Estoi Compares to Other Months

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

This table compares monthly weather conditions in Estoi, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	13°C (56°F)	27 mm (1.1 inches)	80%	moderate
February Weather	14°C (57°F)	46 mm (1.8 inches)	73%	moderate
March Weather	14°C (58°F)	74 mm (2.9 inches)	71%	high
April Weather	15°C (60°F)	54 mm (2.1 inches)	69%	very high
May Weather	18°C (65°F)	16 mm (0.6 inches)	69%	very high
June Weather	20°C (68°F)	4 mm (0.1 inches)	67%	extreme
July Weather	22°C (72°F)	2 mm (0.1 inches)	69%	very high
August Weather	23°C (73°F)	1 mm (0.0 inches)	68%	very high
September Weather	22°C (72°F)	11 mm (0.4 inches)	71%	very high
October Weather	20°C (68°F)	28 mm (1.1 inches)	75%	high
November Weather	16°C (62°F)	56 mm (2.2 inches)	78%	moderate
December Weather	15°C (58°F)	47 mm (1.9 inches)	81%	moderate