December Weather in Santo Antonio dos Olivais, Portugal

Last updated: August 27, 2025

In December, the average temperature in Santo Antonio dos Olivais, Portugal hovers around 11°C (52°F). Expect temperatures to range from a chilly -2°C (28°F) at their lowest to a pleasant 19°C (67°F) at their highest. With 112 mm (4.4 in) of precipitation spread over 12 days, you might want to pack an umbrella. The air is quite moist, with an average humidity of 87%, adding to the cool ambiance of the season.

December Temperature in Santo Antonio dos Olivais

In December in Santo Antonio dos Olivais, the average temperature is 11°C (52°F), with maximums reaching up to 19°C (67°F) and minimums dipping as low as -2°C (28°F). It's a great time for travelers to enjoy a mix of mild and chilly weather, so pack accordingly for both warm days and cooler nights.

December Weather in Santo Antonio dos Olivais: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Santo Antonio dos Olivais, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Santo Antonio dos Olivais, December typically has an average temperature of 11°C (52°F), with highs reaching up to 19°C (67°F) and lows dropping to around -2°C (28°F).

Data source: Temperature data for Santo Antonio dos Olivais generated using information from the Copernicus Climate Change Service.

December Precipitation in Santo Antonio dos Olivais

In Santo Antonio dos Olivais in December, the total precipitation amount is 112 mm (4.4 in), falling over the course of 12 days.

December Precipitation Trends in Santo Antonio dos Olivais

The chart displays monthly precipitation patterns in Santo Antonio dos Olivais, 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 Santo Antonio dos Olivais, December typically receives around 112 mm (4.4 inches) of precipitation spread over approximately 12 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

December Humidity in Santo Antonio dos Olivais

In Santo Antonio dos Olivais in December, humidity is 87%. With an average temperature of 11°C (52°F), this humidity feels like a damp chill that can make your clothes cling uncomfortably, leaving you feeling slightly weighed down while exploring the area.

December Average Humidity in Santo Antonio dos Olivais

This chart illustrates the average monthly humidity levels in Santo Antonio dos Olivais, 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 Santo Antonio dos Olivais is approximately 87%, 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 Santo Antonio dos Olivais

In Santo Antonio dos Olivais in December, the maximum UV index is 2, which corresponds to a low exposure category. With this level of UV radiation, the time to burn is approximately 45 minutes. To learn more about the hourly UV index in Santo Antonio dos Olivais, you can visit Hourly UV Index in Santo Antonio dos Olivais.

Maximum UV Index Levels in Santo Antonio dos Olivais for December

The chart shows the monthly maximum UV Index (UVI) for Santo Antonio dos Olivais 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 Santo Antonio dos Olivais typically reaches 2, which falls under the low exposure category.

Data source: Santo Antonio dos Olivais 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 Santo Antonio dos Olivais Compares to Other Months

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

This table compares monthly weather conditions in Santo Antonio dos Olivais, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	9°C (48°F)	63 mm (2.5 inches)	87%	moderate
February Weather	11°C (53°F)	88 mm (3.5 inches)	81%	moderate
March Weather	12°C (55°F)	117 mm (4.6 inches)	78%	high
April Weather	14°C (58°F)	120 mm (4.7 inches)	79%	very high
May Weather	17°C (63°F)	56 mm (2.2 inches)	78%	very high
June Weather	19°C (66°F)	31 mm (1.2 inches)	71%	extreme
July Weather	21°C (70°F)	8 mm (0.3 inches)	63%	very high
August Weather	21°C (70°F)	9 mm (0.3 inches)	64%	very high
September Weather	20°C (69°F)	36 mm (1.4 inches)	71%	very high
October Weather	17°C (63°F)	91 mm (3.6 inches)	79%	high
November Weather	13°C (55°F)	126 mm (5.0 inches)	86%	moderate
December Weather	11°C (52°F)	112 mm (4.4 inches)	87%	low