December Weather in Alcobaca, Portugal

Last updated: February 24, 2025

December in Alcobaça, Portugal offers a mild climate characterized by a maximum temperature reaching 19°C (66°F), while the average settles around 12°C (54°F). The month experiences a minimum temperature of 2°C (36°F), creating a cool atmosphere ideal for winter strolls. Aside from the temperatures, the region sees an average precipitation of 74 mm (2.9 in) over approximately 10 days, making it a relatively wet month. With a high humidity level of 85%, the air often feels moist, giving the landscape a vibrant, refreshing quality.

December Temperature in Alcobaca

In December, Alcobaca, Portugal, experiences a gentle transition into winter, with temperatures reflecting a cozy chill. The average temperature hovers around 12°C (54°F), offering a pleasant yet brisk atmosphere ideal for exploring the charming streets and historic sites. While the maximum temperature reaches a comfortable 19°C (66°F), the evenings can be quite cool with lows dropping to 2°C (36°F). This month marks a notable dip compared to the milder fall months, yet the temperatures remain moderate enough for enjoyable outdoor activities, making Alcobaca a delightful destination to embrace the festive spirit.

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

The chart illustrates December temperature patterns in Alcobaca, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec515455586365686868645754
Data source: Temperature data for Alcobaca generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

December Precipitation in Alcobaca

In Alcobaça, Portugal, December marks a significant transition within the annual precipitation cycle. With 74 mm (2.9 in) of rainfall over 10 days, it holds a steady position following the wetter months of November, which received the highest at 97 mm (3.8 in). This month serves as a reminder of the approaching winter, exhibiting a noticeable shift towards increased wetness compared to the drier summer months. Interestingly, December's precipitation is a blend of moderate showers, contributing to the lush greenery characteristic of the region as it prepares for the colder season. As the year concludes, Alcobaça experiences a rhythmic pattern of precipitation, highlighting the delicate balance of seasonal shifts in this picturesque part of Portugal.

December Precipitation Trends in Alcobaca

The chart displays monthly precipitation patterns in Alcobaca, 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.
JanFebMarAprMayJunJulAugSepOctNovDec50588795472510730729774
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Alcobaca

December in Alcobaça, Portugal, sees a notable spike in humidity, returning to 85%—matching the dampness of January. This rise occurs after a gradual decline through the summer months, where humidity dips to a comfortable 60% in both July and August. The autumn months bring a resurgence in moisture, with November's humidity soaring to 83%. As the year wraps up, the consistent levels in December indicate a transition back to the wetter weather of winter, highlighting the region's seasonal variability in humidity that keeps the landscape lush and vibrant.

December Average Humidity in Alcobaca

This chart illustrates the average monthly humidity levels in Alcobaca, with December's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how December's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec85%75%72%70%70%63%60%60%68%74%83%85%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Alcobaca

In December, the UV Index in Alcobaca, Portugal, rests at a moderate level of 3, indicating a burn time of approximately 30 minutes. As the year draws to a close, there is a noticeable decline in UV exposure compared to the summer months, where values soared to as high as 11 in June. This seasonal trend emphasizes the importance of awareness as the UV Index consistently varies throughout the year; for instance, while early winter mirrors January's levels, the peak months of May and June demand greater caution due to their very high and extreme classifications, respectively. This fluctuation highlights the need for sun protection, especially in the sun-drenched summer. For detailed insights into UV levels throughout the year, check out the comprehensive guide here: Alcobaca UV Index.

Maximum UV Index Levels in Alcobaca for December

The chart shows the monthly maximum UV Index (UVI) for Alcobaca 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.
JanFebMarAprMayJunJulAugSepOctNovDec35699111098643
Data source: Alcobaca 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.

December Sunshine in Alcobaca

In Alcobaca, Portugal, December marks the closing chapter of the year with a total of 213 hours of sunshine, a gentle decline from the vibrant November. While winter approaches, the sun still graces the region with ample light, although it falls short of the glowing summer months when hours peaked at 418 in July. The trend displays a steady decrease as the year winds down, yet December’s sunshine is a reminder of the mild Mediterranean climate that lingers through the cooler months. As the days shorten and the chill sets in, Alcobaca remains a cozy destination where winter's embrace is softened by the lingering warm hues of the setting sun.

Monthly Sunshine Duration in Alcobaca: December Highlighted

The December sunshine duration represents the total number of hours Alcobaca experiences direct sunlight during the month of December, excluding cloudy or obstructed periods. This chart compares the sunshine duration of December with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec178h225h300h348h406h405h418h393h347h310h228h213h
Data source: Alcobaca December Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Alcobaca During December

In December, Alcobaca, Portugal sees a 37% chance of sunny weather, which is notably lower than the peak summer months of July and August, where the sun shines brightly 63% and 66% of the time, respectively. As the year winds down, the likelihood of sunny days declines from the pleasant November, which boasts a 63% chance of sunshine. This trend highlights a distinct seasonal shift, where the vibrant sun begins to retreat, making way for the cooler winter months. For visitors hoping to bask in the sun during December, it's wise to manage expectations and prepare for a mix of weather, as the days grow shorter and cloudier.

Percentage of Sunny Days in December in Alcobaca

The chart illustrates the percentage of sunny days in Alcobaca throughout the year, with December highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Alcobaca experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec45%22%57%32%48%54%63%66%53%51%63%37%
Data source: Alcobaca December chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Alcobaca in December

In Alcobaça, Portugal, December marks the return to shorter days, with daylight lasting about 9 hours—a duration mirrored in both January and November. As the year unfolds, the trend shows an increase in daylight hours, peaking in May and June at a delightful 14 hours. This gradual shift from the colder, darker months of winter to the vibrant brightness of spring and summer illustrates the region's dynamic seasonal changes. As daylight begins to dwindle again in late summer and autumn, Alcobaça's residents can appreciate the rhythm of nature, preparing to embrace the cozy atmosphere of winter with the promise of longer days ahead in the new year.

Average Daylight Hours in Alcobaca for December

The chart illustrates the variation in daylight duration in Alcobaca throughout the year, with December highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 42m10h 42m11h 58m13h 16m14h 21m14h 54m14h 37m13h 38m12h 24m11h 6m9h 59m9h 24m
Data source: Alcobaca daylight hours, calculated by summing the hours between sunrise and sunset for each day.

December Winds in Alcobaca

In December, Alcobaca, Portugal experiences an average wind speed of 4.6 m/s (10 mph), slightly higher than the previous two months. This uptick reflects a notable seasonal shift as the crisp winter air begins to settle in. While spring and summer months like July see the highest gusts at 5.1 m/s (11 mph), the winds in autumn gradually decrease, reaching their lowest in October at 3.4 m/s (8 mph). As the year closes, December's winds, steady and invigorating, prepare the landscape for the quieter beauty of winter, inviting residents and visitors alike to embrace the refreshing chill of the season.

Average December Wind Speed in Alcobaca

The chart displays monthly wind speed patterns in Alcobaca, with values for each month shown alongside December's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how December's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec4.34.63.73.04.84.85.14.43.93.43.94.6 m/s
Data source: Alcobaca December wind data, generated using information from the Copernicus Climate Change Service.

How December Weather in Alcobaca Compares to Other Months

The weather in Alcobaca changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of December's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Alcobaca and find detailed weather information for every month.

December and January exhibit similar humidity levels at 85%, contributing to a consistently damp atmosphere. However, January sees a slight decrease in average temperatures, with minimums dropping to 1°C (33°F) compared to December's 2°C (36°F). While the maximum temperature in January reaches a comfortable 20°C (68°F), it also brings a bit less precipitation at 50 mm (2.0 in) over 7 days, compared to December's 74 mm (2.9 in) spread across 10 days. For more detailed insights into January weather in Alcobaca, check out Alcobaca weather in January.

December and February showcase a mild winter climate, but there are notable differences between the two months. In December, temperatures range from a minimum of 2°C (36°F) to a maximum of 19°C (66°F), with an average of 12°C (54°F). The month sees about 74 mm (2.9 in) of precipitation over approximately 10 days, accompanied by high humidity at 85%. In contrast, February offers slightly warmer conditions, with temperatures starting at a minimum of 3°C (37°F) and peaking at 23°C (74°F), while maintaining the same average of 12°C (54°F). Precipitation decreases to 58 mm (2.3 in) spread across about 8 days, and humidity also relaxes to 75%. For more detailed insights, check Alcobaca weather in February.

In December, the weather tends to be cooler with average temperatures ranging from a minimum of 2°C (36°F) to a maximum of 19°C (66°F), accompanied by high humidity levels of 85%. Precipitation is relatively moderate, with about 74 mm (2.9 in) of rainfall over approximately 10 days. In contrast, March brings a noticeable warming trend, with minimum temperatures rising to 5°C (41°F) and maximums reaching up to 27°C (81°F). Although March experiences slightly more precipitation at 87 mm (3.4 in) over 9 days, the humidity decreases to 72%, making the overall feel of the weather more comfortable. For a detailed overview, check out the Alcobaca weather in March.

In December, temperatures tend to be cooler, with a minimum of 2°C (36°F) and an average high of 19°C (66°F), while humidity is relatively high at 85%. This month sees about 74 mm (2.9 in) of precipitation over approximately 10 days, creating a wet and chilly atmosphere. In contrast, April experiences milder and more variable temperatures, with a minimum of 6°C (44°F) and a maximum reaching up to 29°C (84°F). Although April is slightly wetter with 95 mm (3.7 in) of precipitation over 13 days, the humidity drops to 70%, making it feel more comfortable. For a deeper dive into the April weather specifics, check out Alcobaca weather in April.

In December, the weather is generally cool and damp, with average temperatures ranging from a chilly 2°C (36°F) at night to a comfortable 19°C (66°F) during the day. This month experiences significant rainfall, with about 74 mm (2.9 in) spread across approximately 10 days, paired with high humidity levels of 85%. In contrast, May brings warmer temperatures, with lows of 8°C (47°F) and highs soaring to 34°C (94°F), suggesting more pleasant days. Rainfall is lighter in May, with only 47 mm (1.8 in) over 7 days and a decrease in humidity to 70%. For a closer look at May's climate, check out Alcobaca weather in May.

In December, temperatures typically range from a chilly 2°C (36°F) at night to a mild high of 19°C (66°F) during the day, accompanied by relatively high humidity at 85%. The month sees about 74 mm (2.9 inches) of precipitation over approximately 10 days, making it a wetter time of year. In contrast, June brings warmer weather with a minimum temperature of 11°C (53°F) and daily highs soaring to 35°C (95°F). This month is much drier, with only 25 mm (1.0 inch) of rainfall spread over 7 days and a lower humidity level of 63%. For more details on June weather conditions, you can explore Alcobaca weather in June.

The weather in December is notably cooler and wetter compared to July. In December, temperatures range from a minimum of 2°C (36°F) to a maximum of 19°C (66°F), with an average of 12°C (54°F). In contrast, July boasts much warmer conditions, with temperatures varying from 13°C (57°F) to a high of 36°C (97°F) and an average of 20°C (68°F). Additionally, December experiences significantly higher precipitation, with about 74 mm (2.9 in) falling over 10 days, while July sees only 10 mm (0.4 in) over just 3 days. The humidity in December is also higher at 85%, compared to 60% in July. For more detailed information on July weather, you can visit Alcobaca weather in July.

When comparing the weather in December to that of August, a stark contrast is evident. December experiences cooler temperatures, with minimums dropping to 2°C (36°F) and average highs around 19°C (66°F). Additionally, it tends to be wetter, receiving about 74 mm (2.9 in) of precipitation over approximately 10 days, alongside a high humidity level of 85%. In contrast, August is characterized by much warmer weather, with minimum temperatures of 14°C (57°F) and daily highs soaring up to 38°C (101°F). Precipitation is minimal during this month, averaging just 7 mm (0.3 in) over a single day, and humidity is significantly lower at 60%. For more detailed insights, you can explore Alcobaca weather in August.

The weather in December contrasts significantly with that of September. December sees cooler temperatures, with an average of 12°C (54°F) and maximums reaching 19°C (66°F), while September boasts a warmer average of 20°C (68°F) and highs of 34°C (94°F). Additionally, December experiences more precipitation, with 74 mm (2.9 in) spread over 10 days, compared to just 30 mm (1.2 in) over 3 days in September. Humidity levels are also higher in December at 85%, compared to 67% in September, contributing to a much different feel in the air. For more detailed information about September weather, please visit Alcobaca weather in September.

In December, temperatures are noticeably cooler, with a minimum of 2°C (36°F) and an average of 12°C (54°F), compared to October's milder minimum of 7°C (46°F) and an average of 18°C (64°F). The maximum temperature in December reaches only 19°C (66°F), while in October, it can soar up to 35°C (95°F). Rainfall is relatively similar, with December experiencing 74 mm (2.9 in) over 10 days, just slightly more than October's 72 mm (2.8 in) across 7 days. Additionally, December has higher humidity at 85%, contrasting with October’s 74%. For more detailed insights on October weather, visit Alcobaca weather in October.

In comparing the weather of December and November, we see a notable shift in temperatures and precipitation patterns. December's temperatures range from a low of 2°C (36°F) to a high of 19°C (66°F), resulting in a cooler average of 12°C (54°F). This contrasts with November, which boasts warmer temperatures with a minimum of 7°C (45°F) and a maximum of 25°C (76°F), leading to a higher average of 14°C (57°F). Additionally, December experiences slightly less precipitation, totaling 74 mm (2.9 in) over 10 days, compared to November's 97 mm (3.8 in) over 13 days. The humidity remains fairly stable, with December at 85% and November at 83%. For more insights into November's weather, check out Alcobaca weather in November.

Compare Alcobaca's Climate with Cities Worldwide

Conclusion: What to Expect From December Weather in Alcobaca

As December rolls into Alcobaca, the climate takes on a decidedly cooler and wetter character compared to the milder months before it. Average temperatures dip, providing a cozy backdrop for the holiday season, with chilly nights contrasting sharply with warmer days. Visitors can expect increased precipitation, resulting in about a third of the month experiencing rain, while persistent humidity wraps the landscape in a crisp embrace. This shift not only ushers in a season of serene beauty but also makes it an ideal time to explore the picturesque surroundings, invigorated by the refreshing winter air. For those curious about how Alcobaca's weather evolves throughout the year, detailed insights can be found at Alcobaca Climate.