December Weather in Llanrwst, United Kingdom

Last updated: March 17, 2025

December in Llanrwst, United Kingdom, ushers in a crisp, cool climate characterized by an average temperature of 6°C (44°F), with highs reaching 13°C (56°F) and lows dipping to a chilly -3°C (26°F). The month is marked by significant precipitation, averaging 115 mm (4.5 in) over the course of 18 days, creating a damp atmosphere with a humidity level of 89%. Visitors can expect a typical winter experience, ideal for cozying up by a fireplace or enjoying the picturesque, rain-kissed scenery.

December Temperature in Llanrwst

In December, Llanrwst, United Kingdom, experiences a cool and crisp climate, marking a transition into winter. With minimum temperatures dipping to -3°C (26°F) and an average around 6°C (44°F), the town is embraced by a chilly atmosphere, perfect for wrapping up in cozy layers. While daytime highs reach approximately 13°C (56°F), it's clear that the town is settling into its colder season, following November's slightly warmer temperatures. This consistent dip from the previous months illustrates the gradual onset of winter's chill, creating a picturesque scene that invites residents and visitors alike to enjoy the beauty of the season while savoring hot beverages by the fire.

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

The chart illustrates December temperature patterns in Llanrwst, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec424344485358616057524643
Data source: Temperature data for Llanrwst 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 Llanrwst

December in Llanrwst typically marks the peak of the wet season, as evidenced by the 115 mm (4.5 in) of precipitation that falls over about 18 days. This amount surpasses all other months, highlighting December as the month with both the highest rainfall and the greatest number of wet days. Following closely, November also features substantial rainfall, with 91 mm (3.6 in) across the same 18 days. This trend showcases a notable increase in precipitation as the year draws to a close, paving the way for a quintessentially damp and wintry atmosphere in this picturesque corner of the United Kingdom. The consistent uptick in rainfall during the colder months sets a striking backdrop, inviting both locals and visitors to experience Llanrwst's enchanting landscapes.

December Precipitation Trends in Llanrwst

The chart displays monthly precipitation patterns in Llanrwst, 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.
JanFebMarAprMayJunJulAugSepOctNovDec71929656719992969610791115
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

December Humidity in Llanrwst

In December, Llanrwst experiences a significant level of humidity, averaging 89%, which is slightly lower than the peak seen in November at 91%. As the year progresses from the drier summer months of July and August, where humidity dips to around 78-79%, there is a noticeable increase in moisture during the fall and winter months. This trend reflects the region's transition into the colder season, with humidity climbing back up in the latter part of the year, peaking again in October. Overall, December's humidity is emblematic of Llanrwst's wet winters, creating a lush and vibrant landscape as the year draws to a close.

December Average Humidity in Llanrwst

This chart illustrates the average monthly humidity levels in Llanrwst, 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%85%79%81%78%79%85%90%91%89%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Llanrwst

In December, Llanrwst experiences a low UV Index of 1, indicating minimal risk of harm from unprotected sun exposure, with a burn time of 45 minutes for fair-skinned individuals. This marks a return to the lower levels of UV radiation that characterize the winter months, following a peak of very high UV in the summer. As the year concludes, residents can enjoy outdoor activities without significant concern for sun damage, echoing the trend of reduced UV intensity from November’s index of 2. As always, maintaining awareness of the UV Index is important for skin protection, and you can find detailed information at Llanrwst UV Index.

Maximum UV Index Levels in Llanrwst for December

The chart shows the monthly maximum UV Index (UVI) for Llanrwst 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.
JanFebMarAprMayJunJulAugSepOctNovDec124578875421
Data source: Llanrwst 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 Llanrwst

In December, Llanrwst experiences a gentle decline in sunshine hours, with the skies brightening for about 98 hours throughout the month. This marks a notable decrease from the vibrant 398 hours of sunshine in May and the peak summer months of July and August, where the sun graced the area for over 400 hours. As winter approaches, the allure of crisp, clear days becomes a cherished reprieve, following the dramatic change from the fall season's dwindling light. December, while modest in sunshine compared to its brighter counterparts, still offers a glimmer of light as the year draws to a close, inviting residents and visitors alike to embrace the tranquil beauty of Llanrwst during this serene month.

Monthly Sunshine Duration in Llanrwst: December Highlighted

The December sunshine duration represents the total number of hours Llanrwst 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.
JanFebMarAprMayJunJulAugSepOctNovDec88h153h211h322h398h379h405h369h297h225h114h98h
Data source: Llanrwst December Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Llanrwst During December

December in Llanrwst, United Kingdom, is marked by a modest 19% chance of sunny weather, reflecting a subtle decline as the year draws to a close. This likelihood, while slightly higher than the 18% found in October and consistent with November's 20%, underscores the trend towards gloomier winter months. As the seasons transition from the vibrant spring and summer peaks—where April boasts a delightful 46% chance of sunshine—the start of winter brings a noticeable dip in optimistic forecasts. Therefore, residents and visitors should prepare for overcast skies and the occasional drizzle, making the fleeting sunny moments all the more precious in this charming Welsh town.

Percentage of Sunny Days in December in Llanrwst

The chart illustrates the percentage of sunny days in Llanrwst 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 Llanrwst experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec20%24%26%46%28%25%35%24%20%18%20%19%
Data source: Llanrwst December chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Llanrwst in December

In Llanrwst, United Kingdom, December marks the end of a year characterized by fluctuating daylight hours, with the month featuring just 7 hours of daylight—the shortest of the year. As we transition from the longer, sun-kissed months of June and July, where daylight peaks at 16 hours, the gradual decline is evident. With each passing month from October’s 10 hours to November's 8, the dwindling light serves as a reminder of winter’s embrace. This pattern highlights a strong seasonal trend; as nature settles into its slumber, the captivating cycle of increasing and decreasing daylight creates a unique rhythm that encapsulates the essence of Pembrokeshire's ever-changing landscape.

Average Daylight Hours in Llanrwst for December

The chart illustrates the variation in daylight duration in Llanrwst throughout the year, with December highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 9m9h 50m11h 54m14h 1m15h 52m16h 51m16h 19m14h 39m12h 36m10h 31m8h 37m7h 36m
Data source: Llanrwst daylight hours, calculated by summing the hours between sunrise and sunset for each day.

December Winds in Llanrwst

As December settles over Llanrwst, the wind begins to pick up, averaging 4.4 m/s (10 mph), which is a slight increase from November's 4.3 m/s (10 mph). This month, with winds becoming more pronounced, reflects a gradual upward trend observed since the earlier months of the year. The year started with a mellow 4.0 m/s (9 mph) in January, gradually fluctuating, reaching its peak of 5.0 m/s (11 mph) in February before seeing lighter winds in the summer months. Now, as autumn gives way to winter, the winds are once again gaining strength, suggesting that Llanrwst is bracing for the colder days ahead with a refreshing, brisk air that invigorates its picturesque surroundings.

Average December Wind Speed in Llanrwst

The chart displays monthly wind speed patterns in Llanrwst, 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.
JanFebMarAprMayJunJulAugSepOctNovDec4.05.04.63.03.63.12.43.32.94.74.34.4 m/s
Data source: Llanrwst December wind data, generated using information from the Copernicus Climate Change Service.

How December Weather in Llanrwst Compares to Other Months

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

In December, the weather experiences a range of temperatures, with a minimum of -3°C (26°F) and an average of 6°C (44°F), peaking at 13°C (56°F). The month sees notable precipitation, accumulating 115 mm (4.5 in) over 18 days, contributing to a high humidity level of 89%. In contrast, January presents a slightly cooler average temperature of 5°C (42°F) while maintaining the same minimum of -3°C (26°F) and reaching slightly higher maximum temperatures of 14°C (58°F). Precipitation decreases significantly to 71 mm (2.8 in) over just 13 days, with humidity remaining consistent at 89%. For a closer look at January weather patterns, you can visit Llanrwst weather in January.

In December, temperatures range from a chilly minimum of -3°C (26°F) to a mild maximum of 13°C (56°F), with an average of 6°C (44°F). The month is quite wet, experiencing about 115 mm (4.5 in) of precipitation over 18 days and high humidity at 89%. In contrast, February exhibits slightly colder mornings with a minimum temperature of -5°C (24°F), but it can warm up to a maximum of 18°C (65°F), maintaining an average temperature of 6°C (43°F). February is drier, with precipitation at 92 mm (3.6 in) over 15 days and a similar humidity level of 88%. For more specific insights, you can check Llanrwst weather in February.

In December, temperatures typically range from a minimum of -3°C (26°F) to a maximum of 13°C (56°F), with an average of 6°C (44°F). The month experiences significant precipitation, averaging 115 mm (4.5 in) across 18 days, and humidity remains high at 89%. In contrast, March sees slightly colder temperatures with a minimum of -6°C (22°F) and an average of 7°C (44°F), but it can reach up to 19°C (66°F). The precipitation is somewhat lower at 96 mm (3.8 in) over 16 days, and humidity is slightly reduced at 86%. This comparison highlights the gradual transition in weather patterns as winter gives way to spring. For more specific information about the weather in Llanrwst during this month, visit Llanrwst weather in March.

December and April exhibit notable differences in weather patterns. In December, temperatures range from a chilly minimum of -3°C (26°F) to a relatively mild maximum of 13°C (56°F), with an average temperature of 6°C (44°F). The month is also characterized by high precipitation, accumulating 115 mm (4.5 in) over 18 days, and a humidity level of 89%. In contrast, April sees an increase in temperature, with lows of -1°C (30°F) and highs of up to 22°C (72°F), averaging around 9°C (48°F). Precipitation is significantly lower at 56 mm (2.2 in) over just 11 days, along with a slightly reduced humidity of 84%. For more details on weather in this month, you can check Llanrwst weather in April.

December and May present contrasting weather conditions. In December, temperatures range from a chilly -3°C (26°F) to a mild 13°C (56°F), with an average of 6°C (44°F). The month is marked by significant precipitation, totaling 115 mm (4.5 in) over 18 days, and high humidity at 89%, contributing to a damp and cold atmosphere. In contrast, May offers a much warmer climate, with temperatures fluctuating from a low of -1°C (31°F) to a high of 27°C (81°F) and an average of 12°C (53°F). Precipitation decreases to 71 mm (2.8 in) over 12 days, and humidity drops to 79%, making for a more pleasant and drier environment. For more details on May weather, you can check this link: Llanrwst weather in May.

December and June present contrasting weather conditions. In December, temperatures range from a chilly minimum of -3°C (26°F) to a mild maximum of 13°C (56°F), with an average of 6°C (44°F). The month is quite damp, receiving 115 mm (4.5 in) of precipitation over 18 days, and maintains a high humidity level of 89%. In comparison, June enjoys a much warmer climate with temperatures ranging from a minimum of 6°C (42°F) to a pleasant maximum of 28°C (84°F), averaging 15°C (59°F). This month sees slightly less precipitation at 99 mm (3.9 in) over 13 days and lower humidity at 81%. For a closer look at weather patterns, check out Llanrwst weather in June.

In December, temperatures in Llanrwst can drop to a chilling minimum of -3°C (26°F), with an average of 6°C (44°F) and a maximum reaching 13°C (56°F). The month typically experiences high humidity at 89% and significant precipitation, averaging 115 mm (4.5 in) over 18 days. In contrast, July offers a much warmer climate, with minimums of 7°C (44°F) and average highs of 29°C (85°F), creating a pleasant summer atmosphere. The humidity drops to 78%, and precipitation is slightly lower, averaging 92 mm (3.6 in) across 16 days. For a detailed look at the weather specifics, you can visit Llanrwst weather in July.

December and August present contrasting weather patterns in terms of temperature and humidity. In December, temperatures can drop to a minimum of -3°C (26°F) and typically average around 6°C (44°F), with highs reaching up to 13°C (56°F). This month also experiences higher precipitation, totaling 115 mm (4.5 in) over about 18 days, accompanied by high humidity levels at 89%. In contrast, August is much milder with minimum temperatures of 7°C (45°F) and average highs of 27°C (82°F), resulting in an average of 16°C (60°F). The month sees slightly less rainfall at 96 mm (3.8 in), also spread over 18 days, but with a lower humidity level of 79%. These differences highlight how December is colder and wetter compared to the warmer and drier August. For a detailed look at Llanrwst's climate, you can visit Llanrwst weather in August.

In comparing the weather between December and September, December tends to be significantly colder, with temperatures ranging from a minimum of -3°C (26°F) to a maximum of 13°C (56°F), while September boasts a more moderate range from 3°C (37°F) to 27°C (81°F). Additionally, December sees higher precipitation levels, averaging 115 mm (4.5 in) over 18 days, compared to September's 96 mm (3.8 in) over 15 days. The humidity also reflects a slight difference, with December averaging 89% compared to September's 85%. For more detailed insights, you can check Llanrwst weather in September.

In comparing December and October weather, December tends to be colder with average temperatures ranging from -3°C (26°F) to a maximum of 13°C (56°F), contrasted with October's milder averages of -2°C (28°F) to 21°C (70°F). Additionally, while both months experience significant precipitation, December has a slight edge with 115 mm (4.5 in) over October's 107 mm (4.2 in), though they are similar in the number of rainy days—18 for December and 17 for October. Humidity levels are almost equal, with December at 89% and October at 90%. For a detailed breakdown of the conditions during October, visit Llanrwst weather in October.

In comparing the weather of December to November, we observe a slight drop in average temperatures, with December averaging around 6°C (44°F) compared to November's 8°C (47°F). December also witnesses a lower maximum temperature of 13°C (56°F) versus November's 16°C (60°F). Precipitation increases notably in December, with 115 mm (4.5 in) recorded over 18 days, while November sees less rainfall at 91 mm (3.6 in) over the same number of days. Humidity levels are relatively similar, with December at 89% and November at 91%. For a more detailed look at the weather specifics for November, please refer to this link: Llanrwst weather in November.

Compare Llanrwst's Climate with Cities Worldwide

Conclusion: What to Expect From December Weather in Llanrwst

As December ushers in the cozy embrace of winter, Llanrwst experiences a notable shift in its climate compared to other months. The chilly temperatures settle in, with crisp days often feeling colder due to heightened humidity levels that linger around 89%. While the frequent rainfall, with 18 days of precipitation totaling 115 mm, adds a distinctly soggy layer to the month, it also nurtures the stunning winter scenery. This period marks a transition from the mildness of autumn to the true essence of winter, making December a unique chapter in Llanrwst's yearly weather tale. For a deeper understanding of the area's weather patterns, explore the link: Llanrwst Climate.