December Weather in Boscastle, United Kingdom

Last updated: March 17, 2025

In Boscastle, United Kingdom, December brings a mix of cool temperatures and considerable moisture. The maximum temperature hovers around 13°C (57°F), while the average dips to a brisk 9°C (48°F), and chilly nights can see temperatures plunge to a minimum of 3°C (37°F). This month is characterized by substantial precipitation, with a total of 165 mm (6.5 in) spread over approximately 23 rainy days, leading to an impressive humidity level of 89%. Visitors can expect a cozy, yet damp atmosphere, typical of a winter's embrace in this scenic Cornish village.

December Temperature in Boscastle

In December, Boscastle experiences a shift towards cooler temperatures as winter settles in, with the minimum dipping to 3°C (37°F) and an average of 9°C (48°F). While the maximum temperature reaches a modest 13°C (57°F), the trend from the previous months shows a gradual decline as the year draws to a close. Despite this overall cooling, December remains relatively mild compared to other winter months, offering a crispness in the air that complements the scenic coastal landscapes. As festive celebrations gear up, the milder temperatures invite both locals and visitors to enjoy the quaint charm of this picturesque village during the holiday season.

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

The chart illustrates December temperature patterns in Boscastle, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec454646495359626159555048
Data source: Temperature data for Boscastle generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

December Precipitation in Boscastle

In December, Boscastle experiences the highest precipitation of the year, with a substantial 165 mm (6.5 in) falling over an average of 23 days. This trend marks a significant increase compared to the preceding months, particularly in November, which records 125 mm over 20 days. As winter sets in, these rainfall patterns highlight the region's shift to wetter conditions, with the extended number of rainy days indicating a persistent, drizzly ambiance throughout the month. December's persistent precipitation not only contributes to the lush landscapes of the Cornish coast but also prepares the area for the quieter, often stormy winter months ahead.

December Precipitation Trends in Boscastle

The chart displays monthly precipitation patterns in Boscastle, 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.
JanFebMarAprMayJunJulAugSepOctNovDec95106102517295829195144125165
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

December Humidity in Boscastle

In Boscastle, United Kingdom, December wraps up the year with a humidity level of 89%, closely mirroring the trend seen in both October and November, where humidity peaks at 89% and 90%, respectively. This consistent high humidity during the winter months reflects a seasonal pattern, as the colder temperatures often lead to increased moisture in the air. Notably, as the year transitions from summer to winter, humidity levels take a noticeable dip in July and August before rising sharply again in the fall. The data highlights how Boscastle experiences its most humid months at the end of the year, creating an atmospheric richness that characterizes the coastal climate.

December Average Humidity in Boscastle

This chart illustrates the average monthly humidity levels in Boscastle, 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.
JanFebMarAprMayJunJulAugSepOctNovDec89%88%86%84%80%80%70%73%79%89%90%89%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Boscastle

As we delve into the December UV Index in Boscastle, United Kingdom, we see a notable pattern as the year draws to a close. With a UV Index of 1, December sits firmly in the low exposure category, resulting in a comfortable burn time of 45 minutes. This month marks a significant drop from the summer highs, where values peaked at 9 in June and 8 in July—both classified as very high. The gradual descent from a moderate 4 in March to this low level reflects the changing seasons, allowing for safer outdoor activities without the heightened risk of sunburn. For an in-depth analysis of UV trends throughout the year, visit Boscastle UV Index.

Maximum UV Index Levels in Boscastle for December

The chart shows the monthly maximum UV Index (UVI) for Boscastle 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.
JanFebMarAprMayJunJulAugSepOctNovDec224679876421
Data source: Boscastle 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 Boscastle

In December, Boscastle, United Kingdom, experiences a notably quieter sun cycle with 116 hours of sunshine, marking a significant drop from the vibrant glow of summer months. As the year winds down, the sunlight diminishes after the peak of 421 hours in July, creating a stark contrast. Following this sunny crescendo, the gradual decline continues through autumn, culminating in December's relatively brief days. This trend illustrates a seasonal shift, where the cozy, dim light of winter envelops the charming village, inviting visitors to embrace the enchanting atmosphere, even as the sun retreats.

Monthly Sunshine Duration in Boscastle: December Highlighted

The December sunshine duration represents the total number of hours Boscastle 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.
JanFebMarAprMayJunJulAugSepOctNovDec94h158h228h352h406h405h421h384h318h250h142h116h
Data source: Boscastle December Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Boscastle During December

In Boscastle, United Kingdom, the likelihood of sunny weather in December is notably low, with just a 21% chance of sunshine gracing the skies. This trend mirrors the waning daylight of late autumn, where the sun appears infrequently, particularly as the year draws to a close. Looking at the broader picture, December aligns closely with October and November, both of which exhibit similar chances of clear skies. As autumn transitions to winter, the probability of sun dips dramatically, especially when compared to April, which boasts a more favorable 55% sunny days. Thus, while December offers a picturesque winter landscape, don’t count on abundant sunshine to brighten your holiday season!

Percentage of Sunny Days in December in Boscastle

The chart illustrates the percentage of sunny days in Boscastle 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 Boscastle experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec22%25%33%55%33%26%39%33%29%22%21%21%
Data source: Boscastle December chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Boscastle in December

In Boscastle, United Kingdom, December ushers in a season where daylight mirrors that of November, offering just 8 hours of sunshine each day. As the year unfolds, daylight gradually increases from the brief, cozy days of winter in December and January to the luxurious light of summer, peaking in June with a generous 16 hours. This gradual transition highlights the remarkable seasonal fluctuations, with daylight durations in the spring months of March and April signifying a refreshing shift, climbing to 11 and 13 hours, respectively. However, as autumn sets in, daylight diminishes once more, illustrating the rhythmic cycle of light and dark that characterizes this charming coastal village throughout the year.

Average Daylight Hours in Boscastle for December

The chart illustrates the variation in daylight duration in Boscastle throughout the year, with December highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 31m10h 2m11h 55m13h 50m15h 31m16h 23m15h 55m14h 25m12h 34m10h 39m8h 56m8h 2m
Data source: Boscastle daylight hours, calculated by summing the hours between sunrise and sunset for each day.

December Winds in Boscastle

As December unfolds in Boscastle, United Kingdom, the winds begin to pick up, boasting an average speed of 7.2 m/s (16 mph). This brisk gustiness is a noticeable uptick compared to the preceding months, reflecting a trend towards stronger winds as winter approaches. Notably, the month follows November’s average of 5.6 m/s (13 mph) and is among the highest for the year, rivaled only by February’s peak. As the year draws to a close, the invigorating December wind not only infuses the coastal village with an energetic chill but also heralds the onset of winter’s embrace, setting the stage for the dramatic landscapes that this rugged coast is known for.

Average December Wind Speed in Boscastle

The chart displays monthly wind speed patterns in Boscastle, 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.
JanFebMarAprMayJunJulAugSepOctNovDec6.57.36.04.65.84.14.25.04.26.25.67.2 m/s
Data source: Boscastle December wind data, generated using information from the Copernicus Climate Change Service.

How December Weather in Boscastle Compares to Other Months

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

December tends to be slightly warmer than January, with average temperatures ranging from 3°C (37°F) to 13°C (57°F) compared to January's range of 0°C (32°F) to 14°C (58°F). However, December is wetter, receiving 165 mm (6.5 in) of precipitation over 23 days, while January accounts for only 95 mm (3.8 in) over 14 days. Humidity levels are comparable, remaining high at 89% in December and slightly lower at 88% in January. For more detailed January weather information, you can check Boscastle weather in January.

In December, temperatures reflect a mild winter with minimums around 3°C (37°F) and averages settling at 9°C (48°F), peaking at 13°C (57°F). The month is quite wet, receiving 165 mm (6.5 in) of precipitation over 23 days, and maintaining high humidity levels at 89%. In contrast, February experiences cooler temperatures, dropping to a minimum of -2°C (29°F) yet slightly warmer averages at 8°C (46°F) and maximums reaching 14°C (58°F). Precipitation decreases significantly to 105 mm (4.2 in) across 16 days, with humidity just slightly lower at 88%. For a detailed look, check out Boscastle weather in February.

December and March present distinct weather patterns, showcasing the transition from winter to spring. In December, temperatures range from a chilly 3°C (37°F) to a maximum of 13°C (57°F), with an average of 9°C (48°F). The month is characterized by heavy precipitation, totaling 165 mm (6.5 in) over 23 days, and high humidity at 89%. In contrast, March experiences slightly colder minimum temperatures, dipping to -3°C (26°F), but sees a more moderate maximum of 17°C (63°F) and an average temperature of 8°C (47°F). Precipitation levels decrease to 102 mm (4.0 in) over 17 days, and humidity is slightly lower at 86%. For more details on the weather conditions during this month, check out Boscastle weather in March.

When comparing the weather in December and April, notable differences emerge. December typically features cooler temperatures, with a minimum of 3°C and a maximum of 13°C, while April sees slightly milder conditions, ranging from a minimum of 2°C to a maximum of 20°C. Precipitation is much more frequent in December, with 165 mm falling over 23 days, compared to just 51 mm over 10 days in April. Additionally, December experiences higher humidity levels at 89%, while April is slightly lower at 84%. For more specific insights into April weather, you can visit Boscastle weather in April.

In December, the weather tends to be quite chilly, with temperatures ranging from a cold 3°C (37°F) to a maximum of 13°C (57°F) and an average of 9°C (48°F). This month is also characterized by high humidity at 89% and significant precipitation, totaling 165 mm (6.5 in) over approximately 23 days. In contrast, May brings a noticeable warmth, with temperatures starting from a minimum of 5°C (41°F) and rising to a comfortable 22°C (71°F), averaging around 12°C (54°F). Additionally, May experiences much less rainfall, with 72 mm (2.8 in) spread across 13 days and lower humidity at 80%. For more detailed insights, you can check out Boscastle weather in May.

December and June present contrasting weather conditions, showcasing the distinct characteristics of winter and summer. In December, temperatures range from a chilly 3°C (37°F) to a maximum of 13°C (57°F), accompanied by high humidity at 89%. The month sees significant precipitation, averaging 165 mm (6.5 inches) over 23 days, creating a damp and cool atmosphere. On the other hand, June offers milder weather, with temperatures ranging from a minimum of 9°C (48°F) to a warm maximum of 25°C (78°F). The precipitation decreases to 95 mm (3.7 inches) over just 16 days, and humidity levels are slightly lower at 80%. The contrast between the two months highlights the shift from the cold, wet conditions of December to the warmer, drier days of June, making it an ideal time to explore outdoor activities. For more detailed information, you can check Boscastle weather in June.

December and July present starkly contrasting weather conditions. In December, temperatures range from a chilly minimum of 3°C (37°F) to a maximum of 13°C (57°F), with an average of 9°C (48°F). This month also experiences significant precipitation, totaling 165 mm (6.5 in) over 23 days, coupled with high humidity at 89%. In contrast, July boasts much warmer temperatures, with a minimum of 10°C (51°F) and a maximum reaching up to 26°C (79°F), averaging around 17°C (62°F). The summer month sees less rainfall, with only 82 mm (3.2 in) scattered over 13 days and a lower humidity level of 70%. For a closer look at weather specifics, you can check out Boscastle weather in July.

The weather in December is considerably cooler and wetter than in August. With temperatures ranging from a chilly 3°C (37°F) to a maximum of 13°C (57°F), December experiences an average temperature of 9°C (48°F). This month also sees significant precipitation, totaling 165 mm (6.5 in) over approximately 23 days and high humidity levels at 89%. In contrast, August is much milder, with temperatures ranging from a minimum of 11°C (53°F) to a maximum of 24°C (76°F), averaging 16°C (62°F). Precipitation in August is lighter at 90 mm (3.6 in) across 18 days, and the humidity is noticeably lower at 73%. For more detailed insights, you can refer to Boscastle weather in August.

December and September present notably different weather patterns. In September, temperatures range from a minimum of 8°C (46°F) to a maximum of 25°C (78°F), offering a more temperate climate with an average of 15°C (60°F). The month experiences moderate rainfall, with about 95 mm (3.8 in) over 15 days and lower humidity at 79%. In contrast, December tends to be chillier, with temperatures fluctuating between 3°C (37°F) and 13°C (57°F), averaging around 9°C (48°F). The winter month is significantly wetter, accumulating 165 mm (6.5 in) of precipitation over 23 days and exhibiting higher humidity levels at 89%. For those interested in detailed weather patterns, you can explore further information about Boscastle weather in September.

When comparing the weather in December to that in October, notable differences emerge. December experiences cooler temperatures, with an average of 9°C (48°F), whereas October boasts a milder average of 13°C (55°F). The maximum temperatures in October can reach up to 20°C (68°F), a stark contrast to December's peak of 13°C (57°F). Precipitation is more frequent in December, with 165 mm (6.5 in) spread over 23 days, compared to October's 144 mm (5.7 in) over 18 days. Interestingly, both months share the same humidity levels at 89%. For more details on October's weather, you can check Boscastle weather in October.

In comparing the weather of December and November, December tends to be slightly cooler, with average temperatures ranging from a minimum of 3°C (37°F) to a maximum of 13°C (57°F), compared to November's slightly warmer range of 2°C (35°F) to 16°C (61°F). December also sees increased precipitation, with 165 mm (6.5 in) falling over 23 days, while November has less rainfall at 125 mm (4.9 in) across 20 days. Interestingly, humidity levels are similar, with December at 89% and November at 90%. For more detailed insights on November weather, you can visit Boscastle weather in November.

Compare Boscastle's Climate with Cities Worldwide

Conclusion: What to Expect From December Weather in Boscastle

As December unfolds in Boscastle, the weather shifts into a cooler and wetter pattern, distinguishing it from the milder months preceding it. With temperatures dipping to an average of just 9°C (48°F), the village embraces the chill, while the high humidity of 89% amplifies the cold feel. Rain becomes a frequent visitor, drenching the area on 23 days throughout the month and accumulating a total of 165 mm (6.5 inches) of precipitation. This wet, brisk climate not only creates a cozy atmosphere for locals but also highlights the dramatic transformation of Boscastle before the new year arrives. For more insights, explore the details on Boscastle Climate.