December Weather in Carcavelos, Portugal

Last updated: February 24, 2025

Carcavelos in December offers a mild coastal climate, with temperatures ranging from a maximum of 18°C (65°F) to a chilly minimum of 6°C (43°F). The average temperature settles at a comfortable 13°C (56°F), providing a refreshing atmosphere for visitors. Although the month sees about 62 mm (2.4 in) of precipitation over 8 days, the high humidity of 85% adds a touch of moisture to the air, enhancing the vibrant coastal landscape. Embrace the cool yet inviting days, as December in Carcavelos promises a cozy blend of beachside charm and seasonal comfort.

December Temperature in Carcavelos

As December unfolds in Carcavelos, Portugal, temperatures take a gentle dip, ushering in cooler, yet still mild, winter days. The month begins with a minimum temperature of around 6°C (43°F), reflecting a touch of chill, while the average temperature hovers at a comfortable 13°C (56°F), making it favorable for outdoor strolls along the coast. The maximum temperature reaches about 18°C (65°F), providing ample opportunity to enjoy the lingering warmth of the autumn sun. This trend of mild winters continues in Carcavelos, where December's climate remains pleasantly temperate compared to the more severe cold experienced in other parts of Europe, allowing both locals and visitors to relish the beauty of the season without the harshness of deep winter.

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

The chart illustrates December temperature patterns in Carcavelos, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec535556586365686968655956
Data source: Temperature data for Carcavelos 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 Carcavelos

In December, Carcavelos experiences a notable shift in precipitation patterns, with an average of 62 mm (2.4 in) of rain spread over 8 days. This marked variation reflects a trend of increasing rainfall as the year comes to a close, building upon the 80 mm recorded in November. While December rainfall is significant, it is lower than the preceding month yet indicative of the region's transition into winter. Compared to the dry spells of summer, where July and August record almost no precipitation, December's increased rainfall serves as a reminder of the wet season ahead, creating a refreshing contrast in the overall climatic rhythm of Carcavelos.

December Precipitation Trends in Carcavelos

The chart displays monthly precipitation patterns in Carcavelos, 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.
JanFebMarAprMayJunJulAugSepOctNovDec3753667336115327468062
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Carcavelos

In Carcavelos, Portugal, December ushers in a return to higher humidity levels, recording 85%, which mirrors January's moisture-laden air. This increase follows a gradual decline from the summer months, where the humidity hovered around a comfortable 60% in July and August. As fall approached, humidity levels began to rise once again, peaking sharply in November at 83%. This pattern highlights a distinct seasonal trend: while the summer months offer drier conditions, winter brings a refreshing return of humidity, providing a unique contrast to the region's climate throughout the year.

December Average Humidity in Carcavelos

This chart illustrates the average monthly humidity levels in Carcavelos, 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 Carcavelos

As the year comes to a close, December in Carcavelos presents a more moderate UV Index of 3, mirroring the start of the year in January. This indicates a comfortable exposure level where you can enjoy outdoor activities without the immediate risk of sunburn, with a burn time of 30 minutes. The trend throughout the year shows a significant peak during the summer months, particularly in June, when the UV Index reaches a striking 11, classified as extreme. This yearly fluctuation highlights the importance of adjusting sun safety practices seasonally. For more detailed information, check out the Carcavelos UV Index.

Maximum UV Index Levels in Carcavelos for December

The chart shows the monthly maximum UV Index (UVI) for Carcavelos 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.
JanFebMarAprMayJunJulAugSepOctNovDec356910111098643
Data source: Carcavelos 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 Carcavelos

December in Carcavelos, Portugal, embraces the charm of winter with 222 hours of sunshine, which, while a dip from the vibrant summer months, still provides a beautiful backdrop to the festive season. As the year winds down, there's a noticeable shift in daylight, with December reflecting a significant decrease from the sun-drenched heights of July, which boasts an impressive 423 hours. However, compared to the drearier November, which offers just 233 hours, December provides a welcome hint of brightness. This transition highlights not only the region's typical seasonal patterns but also invites both locals and visitors to savor the milder weather and stunning coastal vistas during this enchanting month.

Monthly Sunshine Duration in Carcavelos: December Highlighted

The December sunshine duration represents the total number of hours Carcavelos 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.
JanFebMarAprMayJunJulAugSepOctNovDec182h229h307h354h407h411h423h396h350h314h233h222h
Data source: Carcavelos December Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Carcavelos During December

In Carcavelos, Portugal, the likelihood of sunny weather in December presents a modest 40% chance, indicating a transition to cooler, cloudier days as winter approaches. This figure sits below the monthly averages observed throughout the year, particularly in the lively summer months—where July and August boast impressive chances of sunshine at 73% and 72%, respectively. A noticeable dip can be seen from the vibrant autumn months, with November enjoying a robust 67% chance, suggesting that while December may not bask in as much sunlight, it still carries a charm reminiscent of the brighter days preceding it. With the trend of declining sunshine as the year wraps up, December in Carcavelos offers a gentle reminder to embrace the cozy allure of winter, even if the sun disappears for a little while.

Percentage of Sunny Days in December in Carcavelos

The chart illustrates the percentage of sunny days in Carcavelos 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 Carcavelos experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec46%23%60%39%57%66%74%73%63%54%67%40%
Data source: Carcavelos December chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Carcavelos in December

December in Carcavelos, Portugal, marks a notable shift in daylight, as the days shorten to just 9 hours. This decline follows a gradual increase from the winter months of January, where daylight is also limited to 9 hours, each month steadily gaining light until they peak in May and June at 14 hours. As summer fades into autumn, daylight diminishes once more, with a steady decrease noted from September through November. The cyclical nature of daylight in Carcavelos showcases the rhythmic transition of seasons, promising brighter days ahead as the year comes to a close.

Average Daylight Hours in Carcavelos for December

The chart illustrates the variation in daylight duration in Carcavelos throughout the year, with December highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 47m10h 44m11h 58m13h 13m14h 17m14h 48m14h 31m13h 35m12h 23m11h 8m10h 3m9h 29m
Data source: Carcavelos daylight hours, calculated by summing the hours between sunrise and sunset for each day.

December Winds in Carcavelos

In Carcavelos, Portugal, the December winds offer a refreshing yet mild experience, with an average wind speed of 4.9 m/s (11 mph), mirroring the gentle breezes of both January and November. This consistency in wind speeds throughout the winter months suggests a stable maritime climate, as the winds remain relatively gentle compared to the summer peak of 5.7 m/s (13 mph) in July. As the year progresses, it’s intriguing to note that while the winds begin to soften in spring, they gain momentum again in late summer and early fall before settling into their winter rhythm. December's winds are not just a reflection of seasonal change; they encapsulate the charm of Carcavelos, offering a pleasant backdrop for coastal strolls and beachside activities, even in the cooler months.

Average December Wind Speed in Carcavelos

The chart displays monthly wind speed patterns in Carcavelos, 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.
JanFebMarAprMayJunJulAugSepOctNovDec4.95.14.33.65.55.55.75.24.24.04.64.9 m/s
Data source: Carcavelos December wind data, generated using information from the Copernicus Climate Change Service.

How December Weather in Carcavelos Compares to Other Months

The weather in Carcavelos 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 Carcavelos and find detailed weather information for every month.

December and January exhibit similar overall weather patterns, but there are noteworthy differences in temperature and precipitation levels. In December, temperatures range from a minimum of 6°C (43°F) to a maximum of 18°C (65°F), averaging around 13°C (56°F), while January sees a slight dip, with minimum temperatures dropping to 3°C (38°F) and an average of 12°C (53°F), peaking at 19°C (66°F). Precipitation also decreases from 62 mm (2.4 in) over 8 days in December to just 37 mm (1.5 in) across 5 days in January, yet humidity remains constant at 85%. For more specific details on January weather, you can check Carcavelos weather in January.

December and February display some notable similarities and differences in weather patterns. In December, temperatures range from a minimum of 6°C (43°F) to a maximum of 18°C (65°F), with an average of 13°C (56°F). The month sees about 62 mm (2.4 in) of precipitation over approximately 8 days and maintains a high humidity level of 85%. In contrast, February features slightly cooler minimum temperatures at 5°C (41°F) but reaches a higher maximum of 21°C (70°F), resulting in the same average temperature of 13°C (55°F). February experiences less precipitation at 53 mm (2.1 in) over 7 days and lower humidity at 75%. These variations make February feel somewhat drier and warmer during the daytime compared to December. For more detailed insights, visit Carcavelos weather in February.

December and March present a notable contrast in weather patterns. In December, temperatures range from a minimum of 6°C (43°F) to a maximum of 18°C (65°F), with an average of 13°C (56°F) and humidity levels sitting at a high 85%. Moreover, December sees approximately 62 mm (2.4 in) of precipitation over eight days. In comparison, March offers slightly warmer conditions, with temperatures starting at a minimum of 7°C (45°F) and peaking at 23°C (73°F), averaging 14°C (57°F). While March has a similar number of rainy days at eight, it records a slightly higher total precipitation of 66 mm (2.6 in) and boasts lower humidity at 72%. For a more detailed look at the weather during this month, you can explore this link: Carcavelos weather in March.

In December, the weather tends to be cooler with average temperatures ranging from a mild 6°C (43°F) to a maximum of 18°C (65°F). The month sees a fair amount of rain, with precipitation amounting to 62 mm (2.4 in) over about 8 days, accompanied by a high humidity level of 85%. By contrast, April experiences a noticeable warming trend, with minimum temperatures starting at 8°C (46°F) and peaking at 24°C (75°F). Although it receives slightly more rainfall at 73 mm (2.9 in) across 12 days, the overall humidity drops to a more comfortable 70%. For a more detailed look at the weather in April, you can check Carcavelos weather in April.

December's weather is characterized by cooler temperatures, with minimums averaging around 6°C (43°F) and maximums reaching up to 18°C (65°F). The month tends to be quite humid, with an 85% humidity level and about 62 mm (2.4 in) of precipitation over approximately 8 days. In contrast, May brings a noticeable warming trend, where temperatures range from a minimum of 10°C (50°F) to a comfortable maximum of 30°C (86°F). Additionally, humidity lowers to 70%, and precipitation decreases to 36 mm (1.4 in) across only 4 days. If you're interested in more specific conditions during May, check out Carcavelos weather in May.

In December, the weather is much cooler with average temperatures ranging from a minimum of 6°C (43°F) to a maximum of 18°C (65°F), while June enjoys warmer temperatures, with averages between 13°C (56°F) and a high of 32°C (90°F). December also experiences higher humidity at 85% alongside 62 mm (2.4 in) of precipitation over approximately 8 days, compared to June's mild humidity of 63% and significantly lower precipitation of just 11 mm (0.4 in) over 3 days. The contrast between these two months highlights the transition from the chilly, damp conditions of winter to the warm, dry summer weather. For more specific details about June's climate, you can check Carcavelos weather in June.

The weather in December is notably cooler and wetter compared to July. In December, temperatures range from a chilly 6°C (43°F) at night to a mild average of 13°C (56°F) during the day, with a maximum of 18°C (65°F). This month also sees around 62 mm (2.4 in) of precipitation over approximately 8 days, contributing to a high humidity level of 85%. In contrast, July boasts significantly warmer conditions, with minimum temperatures starting at 15°C (59°F) and soaring to an average of 20°C (68°F), peaking at a maximum of 31°C (87°F). Additionally, July is quite dry, receiving only 5 mm (0.2 in) of precipitation and enjoying clear skies throughout the month, with humidity levels at a comfortable 60%. For more details on July weather, check out Carcavelos weather in July.

In December, temperatures range from a cool 6°C (43°F) to a mild 18°C (65°F), with an average of 13°C (56°F). The month is characterized by higher humidity levels at 85% and experiences about 62 mm (2.4 in) of precipitation over 8 days. In contrast, August boasts significantly warmer weather, with temperatures starting at a minimum of 16°C (61°F) and soaring up to a maximum of 35°C (95°F), averaging around 20°C (69°F). This summer month sees very little precipitation, with only 3 mm (0.1 in) and no rainy days, along with lower humidity at 60%. For more details, you can check Carcavelos weather in August.

When comparing the weather between December and September, it's evident that September is significantly warmer, with average temperatures ranging from a minimum of 14°C (58°F) to a maximum of 29°C (84°F). In contrast, December experiences cooler temperatures, with averages between 6°C (43°F) and 18°C (65°F). Additionally, September generally sees much less precipitation, with only 27 mm (1.1 in) over just 2 days, while December can expect 62 mm (2.4 in) spread across about 8 days. The humidity is also lower in September at 67%, compared to December's higher humidity level of 85%. For more detailed information, check out Carcavelos weather in September.

In comparing the weather of December and October, it's clear that October tends to be warmer and drier. In October, temperatures range from a minimum of 10°C (50°F) to a maximum of 28°C (82°F), with an average of 18°C (65°F). The month also has lower humidity levels at 74% and receives only 46 mm (1.8 in) of precipitation over 5 days. In contrast, December sees cooler temperatures, with a minimum of 6°C (43°F) and an average of 13°C (56°F), reaching a maximum of 18°C (65°F). Additionally, December experiences more rain, with 62 mm (2.4 in) falling over 8 days and higher humidity at 85%. For more insights on October weather, check out Carcavelos weather in October.

When comparing the weather in December to November, December tends to be slightly cooler, with minimum temperatures dropping from 9°C (48°F) in November to 6°C (43°F) in December. The average temperature also decreases from 15°C (59°F) in November to 13°C (56°F) in December, highlighting the chillier conditions typical of late fall. In terms of maximum temperatures, November reaches a warmer peak of 23°C (73°F) compared to December's 18°C (65°F). Additionally, December sees increased precipitation, with a total of 62 mm (2.4 in) over 8 days, while November experiences 80 mm (3.2 in) across 11 days. Humidity levels are similar, with December at 85% and November at 83%. For more insights on November weather, visit Carcavelos weather in November.

Compare Carcavelos's Climate with Cities Worldwide

Conclusion: What to Expect From December Weather in Carcavelos

As December rolls into Carcavelos, the weather takes on a distinctly cooler and more humid character compared to the milder months that precede it. While the temperatures can reach a mild maximum of 18°C, the average drops to a brisk 13°C, creating a chill that encourages cozy layers. This month typically experiences an increase in rainfall, with about eight days of precipitation contributing to the overall 62 mm of moisture. The high humidity, often reaching 85%, adds a dampness to the air, making it feel noticeably cooler. For a deeper understanding of how December fits into the broader climate patterns, visit Carcavelos Climate.