December Weather in Arco da Calheta, Portugal

Last updated: February 24, 2025

Discover the December weather in Arco da Calheta, Portugal, where mild temperatures and a touch of rain create a unique atmosphere. The maximum temperature reaches a pleasant 21°C (70°F), while the average settles at a comfortable 17°C (63°F). Minimum temperatures dip to around 12°C (54°F), providing a brisk feel in the evenings. Expect about 77 mm (3.0 in) of precipitation over roughly 8 rainy days, contributing to a humidity level of 75%. Whether you're strolling along the coast or exploring local sights, Arco da Calheta offers a refreshing winter escape filled with character.

December Temperature in Arco da Calheta

In December, Arco da Calheta, Portugal, experiences a mild climate as the year draws to a close. With minimum temperatures around 12°C (54°F), a comfortable average of 17°C (63°F), and pleasant maximums reaching 21°C (70°F), this month offers a gentle transition into winter. The temperatures remain relatively stable, reflecting the trends of previous months, where daytime warmth lingers in the lower twenties. As the landscape transforms, visitors can enjoy the mild weather while basking in the festive atmosphere that characterizes this charming coastal town during the holiday season.

December Weather in Arco da Calheta: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Arco da Calheta, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec616060616366697170696563
Data source: Temperature data for Arco da Calheta 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 Arco da Calheta

In December, Arco da Calheta experiences a notable uptick in precipitation, with 77 mm (3.0 in) recorded over 8 rainy days. This marks a peak in the annual cycle, following a trend of increasing rainfall that starts ramping up in the later months of the year. November, with its 72 mm (2.8 in) on 10 days, sets the stage for December’s wet finale, reinforcing the idea that winter is a significant contributor to the region’s overall precipitation. As temperatures drop and the holiday season approaches, the greater frequency and volume of rainfall provide a refreshing contrast to the parched summer months, where July and August see virtually no precipitation at all. This seasonal shift not only nourishes the local landscape but also prepares the ground for the coming year’s growth.

December Precipitation Trends in Arco da Calheta

The chart displays monthly precipitation patterns in Arco da Calheta, 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.
JanFebMarAprMayJunJulAugSepOctNovDec3765655621283312427277
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Arco da Calheta

In Arco da Calheta, Portugal, December maintains a humidity level of 75%, consistent with the previous months of January and November. Throughout the year, a notable trend emerges as humidity levels generally rise from the warmer summer months, peaking at 83% in both July and August. As autumn progresses, humidity gently declines, settling back to the mid-70s by December. This cyclical pattern highlights how the region experiences higher moisture levels during the summer, while the winter months bring a refreshing reprieve, creating a balanced climate throughout the year.

December Average Humidity in Arco da Calheta

This chart illustrates the average monthly humidity levels in Arco da Calheta, 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.
JanFebMarAprMayJunJulAugSepOctNovDec75%75%78%78%77%80%83%83%81%80%75%75%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Arco da Calheta

As the year draws to a close, December in Arco da Calheta, Portugal, brings a return to a moderate UV Index of 4, reminiscent of the conditions in January. This seasonal shift means safer sun exposure, with a burn time of 30 minutes, allowing residents and visitors to enjoy the outdoors with less concern for skin damage. Following several months of extreme caution during the summer, where the UV Index peaked at 12 in June, December's cooler climate and lower UV levels provide a welcome reprieve. However, it’s still essential to stay informed; for a deeper understanding of seasonal variations, check out the complete details at Arco da Calheta UV Index.

Maximum UV Index Levels in Arco da Calheta for December

The chart shows the monthly maximum UV Index (UVI) for Arco da Calheta 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.
JanFebMarAprMayJunJulAugSepOctNovDec468101112111110864
Data source: Arco da Calheta 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 Arco da Calheta

Nestled in the sun-kissed landscapes of Arco da Calheta, December brings a gentle farewell to the year's sunshine, with 246 hours of radiant light gracing the island. This marks a noticeable decrease from the vibrant 373 hours in May and the peak summer months, where sunshine is almost a constant companion. As the year transitions into its final month, the sunny hours soften, yet they still provide a warm embrace compared to the dullness of winter's chill in many regions. The trend of gradually decreasing sunlight from the height of summer serves as a reminder of the island's bountiful radiance, making December a delightful retreat for those seeking a milder climate and a slice of the sun before the new year dawns.

Monthly Sunshine Duration in Arco da Calheta: December Highlighted

The December sunshine duration represents the total number of hours Arco da Calheta 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.
JanFebMarAprMayJunJulAugSepOctNovDec191h244h299h352h373h376h391h380h338h321h260h246h
Data source: Arco da Calheta December Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Arco da Calheta During December

In Arco da Calheta, Portugal, the likelihood of sunny weather sees a gradual rise from the beginning of the year, peaking in the warm summer months with July boasting an impressive 81% chance of sunshine. As the year transitions into autumn, this percentage dips slightly, settling at 51% in November and further decreasing to 46% in December. This pattern suggests that while December's sun chances are lower than in previous months, daylight still finds a way to shine through, offering residents and visitors alike a chance to enjoy the mild winter weather. Overall, the trend highlights a clear seasonal shift, encouraging a cozy yet vibrant atmosphere as the year wraps up.

Percentage of Sunny Days in December in Arco da Calheta

The chart illustrates the percentage of sunny days in Arco da Calheta 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 Arco da Calheta experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec38%51%54%49%57%62%81%78%59%62%52%46%
Data source: Arco da Calheta December chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Arco da Calheta in December

In Arco da Calheta, Portugal, December sees a return to 10 hours of daylight, aligning with the shorter days of January and November. This consistency at the year’s end highlights a gradual tapering of daylight from the vibrant 14 hours experienced in the peak of summer, specifically in June and July. As the seasons shift, daylight gradually lengthens from February through April, peaking in May before the slow descent begins again. The rhythmic fluctuations in daylight create a captivating cycle, inviting both locals and visitors to appreciate the shifting seasons in this picturesque locale.

Average Daylight Hours in Arco da Calheta for December

The chart illustrates the variation in daylight duration in Arco da Calheta throughout the year, with December highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec10h 14m11h11h 59m13h13h 51m14h 16m14h 2m13h 17m12h 20m11h 19m10h 27m10h
Data source: Arco da Calheta daylight hours, calculated by summing the hours between sunrise and sunset for each day.

December Winds in Arco da Calheta

As December unfolds in Arco da Calheta, Portugal, the wind begins to pick up, showcasing an average speed of 5.7 m/s (13 mph)—the highest for the year. This invigorating shift signifies a transition from the gentler breezes of the earlier months, where winds ranged from about 4.0 to 5.4 m/s. Notably, December's winds stand in contrast to the calmer days of autumn, particularly October with its lowest average of 4.0 m/s (9 mph). This seasonal uptick not only adds a refreshing edge to the winter air but also reflects the region's dynamic climate, enticing both locals and visitors to embrace outdoor adventures amidst the brisk December winds.

Average December Wind Speed in Arco da Calheta

The chart displays monthly wind speed patterns in Arco da Calheta, 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.
JanFebMarAprMayJunJulAugSepOctNovDec4.45.15.14.75.25.35.44.54.44.04.55.7 m/s
Data source: Arco da Calheta December wind data, generated using information from the Copernicus Climate Change Service.

How December Weather in Arco da Calheta Compares to Other Months

The weather in Arco da Calheta 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 Arco da Calheta and find detailed weather information for every month.

In December, the weather features slightly warmer temperatures with a minimum of 12°C (54°F) and an average of 17°C (63°F), peaking at 21°C (70°F). The month also experiences higher precipitation levels, totaling 77 mm (3.0 in) over 8 days, contributing to a humid atmosphere with consistent humidity at 75%. In contrast, January sees a slight dip in temperature, with a minimum of 11°C (52°F) and an average of 16°C (61°F), though the maximum remains the same at 21°C (70°F). Precipitation decreases significantly to 37 mm (1.4 in) over just 6 days, maintaining the humidity at 75%. For more details, check out Arco da Calheta weather in January.

In December, the weather features slightly warmer average temperatures, ranging from a minimum of 12°C (54°F) to a maximum of 21°C (70°F), whereas February sees a minor dip with temperatures averages between 11°C (52°F) and 21°C (70°F). Both months experience similar levels of humidity at 75%, contributing to a consistent feel in the air. Precipitation is also prevalent in both months, but December receives more rain, totaling 77 mm (3.0 in) compared to February's 65 mm (2.5 in), although both months have about 8 days of rainfall. For a closer look at February weather specifics, check out Arco da Calheta weather in February.

December and March present fairly similar weather patterns, though there are some notable differences. In December, the temperatures range from a minimum of 12°C to a maximum of 21°C, with an average of 17°C, while March sees slightly cooler temperatures, with a minimum of 10°C and a maximum of 22°C, averaging 15°C. Both months experience a similar amount of precipitation, with December receiving 77 mm over 8 days and March having 65 mm over the same number of days. Humidity levels are comparable as well, with December at 75% and March slightly higher at 78%. Overall, March tends to be cooler and a bit drier than December. For a detailed look at the weather specifics, you can refer to Arco da Calheta weather in March.

When comparing the weather in December and April, we see some notable differences as well as similarities. December tends to be slightly warmer on average, with temperatures ranging from a minimum of 12°C to a maximum of 21°C, while April's temperatures are slightly cooler, averaging between 12°C and 20°C. Precipitation levels are also different; December receives a higher total of 77 mm over 8 days, whereas April has lower precipitation at 56 mm but spans 12 days. Despite the moderate temperature change, April has a marginally higher humidity level at 78% compared to December's 75%. For those interested in more specific details about April weather, you can refer to Arco da Calheta weather in April.

In December, the weather features a minimum temperature of 12°C (54°F) and averages around 17°C (63°F), with a maximum of 21°C (70°F). This month typically experiences more precipitation, with about 77 mm (3.0 in) falling over 8 days, accompanied by a humidity level of 75%. In contrast, May offers slightly warmer temperatures, starting at a minimum of 14°C (57°F) and peaking at 23°C (73°F), while maintaining the same average of 17°C (63°F). Notably, May is much drier, with only 21 mm (0.8 in) of rain over just 4 days, yet the humidity remains comparable at 77%. For more specifics on May weather, you can check out Arco da Calheta weather in May.

In December, the weather tends to be mild with temperatures ranging from a minimum of 12°C (54°F) to a maximum of 21°C (70°F). This month also experiences higher levels of precipitation, receiving about 77 mm (3.0 in) over approximately 8 days, coupled with a humidity level of 75%. In contrast, June is slightly warmer, with temperatures varying from 15°C (60°F) to 23°C (73°F), and significantly drier, yielding only 28 mm (1.1 in) of rain over about 3 days. The humidity in June rises to 80%, making it feel a bit more muggy despite the overall warmth. For a more detailed comparison, you can check the Arco da Calheta weather in June.

When comparing the weather in December and July, there are notable differences in temperature and precipitation. December tends to be cooler, with average temperatures ranging from a minimum of 12°C (54°F) to a maximum of 21°C (70°F) and experiencing about 77 mm (3.0 in) of precipitation over approximately 8 days. In contrast, July is warmer, with temperatures averaging between 18°C (65°F) and 26°C (79°F), and it boasts significantly lower precipitation, only about 3 mm (0.1 in) across 0 rainy days. Additionally, humidity levels in July are slightly higher at 83%, compared to 75% in December. For more details on July's weather, you can check the link: Arco da Calheta weather in July.

December and August showcase contrasting weather patterns. In December, temperatures range from a minimum of 12°C (54°F) to a maximum of 21°C (70°F), with an average of 17°C (63°F). This month experiences more precipitation, with 77 mm (3.0 in) over approximately 8 rainy days and humidity levels around 75%. In stark contrast, August offers warmer temperatures, with a minimum of 19°C (66°F) and a peak at 26°C (79°F), averaging 22°C (71°F). Notably, August sees a mere 3 mm (0.1 in) of precipitation and no rainy days, accompanied by higher humidity at 83%. For a detailed look at August weather in this region, check out Arco da Calheta weather in August.

When comparing the weather in December to September, notable differences emerge. December experiences cooler temperatures, with a minimum of 12°C (54°F) and an average of 17°C (63°F), while September offers milder conditions, with a minimum of 19°C (66°F) and an average of 21°C (71°F). September is generally drier, receiving only 12 mm (0.5 inches) of precipitation over 2 days, compared to December's 77 mm (3.0 inches) spread over 8 days of rain. Additionally, humidity levels are slightly higher in September at 81%, compared to December's 75%. For more detailed weather information, you can check Arco da Calheta weather in September.

In comparing the weather between October and December, we notice a noticeable drop in temperatures as we transition into winter. December boasts a minimum temperature of 12°C (54°F), with an average of 17°C (63°F) and a maximum of 21°C (70°F); in contrast, October experiences milder conditions with minimums at 17°C (62°F), averages of 20°C (69°F), and highs reaching 25°C (77°F). Additionally, December sees increased precipitation, totaling 77 mm (3.0 in) over about 8 days, whereas October is drier, with only 42 mm (1.7 in) spread over 6 days. The humidity levels remain relatively similar, but December has slightly lower humidity at 75%, compared to October's 80%. For a detailed look at October's conditions, check out Arco da Calheta weather in October.

December's weather shows a slight cooling trend compared to November, with average temperatures dropping from 18°C (65°F) to 17°C (63°F). While both months share the same minimum temperature of 12°C (54°F), December's maximum temperature is lower at 21°C (70°F) compared to November's 24°C (75°F). Additionally, December experiences slightly more precipitation, with 77 mm (3.0 in) over 8 days, compared to November's 72 mm (2.8 in) across 10 days. Interestingly, the humidity remains constant at 75% for both months, providing a similarly muggy atmosphere. For more detailed insights, check out Arco da Calheta weather in November.

Compare Arco da Calheta's Climate with Cities Worldwide

Conclusion: What to Expect From December Weather in Arco da Calheta

As December rolls into Arco da Calheta, the weather shifts noticeably, bringing a refreshing coolness that contrasts with the warmer months prior. With average temperatures hovering around 17°C, this month is characterized by milder conditions, perfect for cozy outings amidst the festive atmosphere. While December experiences a bit more rainfall than earlier months, the precipitation is manageable, allowing for ample opportunities to explore the stunning landscapes. The humidity remains elevated, wrapping the town in a gentle embrace. For those curious about how Arco da Calheta’s December weather compares with the rest of the year, more insights can be found at Arco da Calheta Climate.