December Weather in Isle Of Mull, United Kingdom

Last updated: March 17, 2025

December in the Isle of Mull, United Kingdom brings a dramatic shift in weather, where temperatures range from a maximum of 12°C (54°F) to a chilly minimum of -4°C (25°F). With an average temperature of 6°C (43°F), the month is characterized by considerable humidity at 86%, creating a damp atmosphere. Visitors should prepare for wet conditions, as the island experiences 247 mm (9.7 in) of precipitation over 23 days, making it one of the rainiest months of the year. Despite the gray skies, the Isle of Mull exudes a unique charm during this time, ideal for those seeking a peaceful winter retreat amid stunning coastal landscapes.

December Temperature in Isle Of Mull

In December, the Isle of Mull experiences a notable dip in temperatures as winter settles in, with minimums reaching -4°C (25°F) and average temperatures hovering around 6°C (43°F). Although this month is among the coldest, it mirrors a slight trend observed in previous months, where the maximum temperature peaks at 12°C (54°F), offering a glimpse of milder winter days. This chilliness marks a contrast to the preceding milder autumn months, like November, which saw slightly warmer averages. As the year closes, the island transforms into a serene winterscape, making it a unique time to appreciate Mull’s rugged beauty against the frosty backdrop.

December Weather in Isle Of Mull: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Isle Of Mull, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec424243465054575755514643
Data source: Temperature data for Isle Of Mull 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 Isle Of Mull

December in the Isle of Mull brings a notable surge in precipitation, with 247 mm (9.7 in) of rain falling over an average of 23 days. This winter month contributes to an overall trend of increasing moisture, peaking in October's 309 mm (12.2 in), but December remains a significant player, frequently dampening holiday festivities with its consistent rains. The combination of shorter daylight hours and persistent wet weather enhances the island's enchanting atmosphere, often shrouded in mist and mystery. As the year draws to a close, December's precipitation levels are a reminder of Mull's maritime climate, setting the stage for the lush landscapes and vibrant ecosystems that thrive in the months to come.

December Precipitation Trends in Isle Of Mull

The chart displays monthly precipitation patterns in Isle Of Mull, 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.
JanFebMarAprMayJunJulAugSepOctNovDec1842251937292137144184215309219247
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Isle Of Mull

In December, the humidity in the Isle of Mull settles at a steady 86%, maintaining a pattern observed throughout the colder months. Following a gradual uptick as the year progressed—culminating in November's peak of 90%—the humidity in December reflects a slight decline as winter fully sets in. This showcases a trend of high humidity that spikes during the late summer and early autumn months, particularly in August and September, with values consistently hovering around the 88% to 89% mark. As the year draws to a close, December’s humidity remains comfortably elevated, illustrating the region's characteristic dampness and contributing to its lush, green landscapes.

December Average Humidity in Isle Of Mull

This chart illustrates the average monthly humidity levels in Isle Of Mull, 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.
JanFebMarAprMayJunJulAugSepOctNovDec86%85%85%84%82%84%88%88%89%90%90%86%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Isle Of Mull

In December, the UV Index in the Isle of Mull returns to its low exposure category, mirroring the conditions seen in both January and November, with a steady UV Index of 1. This means that adventurers and locals alike can enjoy outdoor activities without the immediate concern of sunburn, as the burn time stretches to an impressive 45 minutes. This trend of lower UV levels during the winter months highlights a continuous pattern from previous months, where the highest UV exposure peaks in summer. Overall, December maintains this protective shield, allowing for safe exploration of Mull’s breathtaking landscapes. For more details on UV levels throughout the year, visit Isle Of Mull UV Index.

Maximum UV Index Levels in Isle Of Mull for December

The chart shows the monthly maximum UV Index (UVI) for Isle Of Mull 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.
JanFebMarAprMayJunJulAugSepOctNovDec123568865311
Data source: Isle Of Mull 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 Isle Of Mull

December on the Isle of Mull wraps up the year with a gentle glow, offering only 58 hours of sunshine. This marks a significant dip as the island transitions from the vibrant 374 hours in May and 365 hours in June to the winter months, where daylight drastically shrinks. The contrast is stark, especially when compared to early spring, where March enjoys 163 hours of light, hinting at the longer days to come. December's fleeting rays of sunlight serve as a reminder of the island's seasonal rhythms, where the short, chilly days encourage a cozy retreat into the island’s charming landscapes, setting the stage for a reflective winter beauty.

Monthly Sunshine Duration in Isle Of Mull: December Highlighted

The December sunshine duration represents the total number of hours Isle Of Mull 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.
JanFebMarAprMayJunJulAugSepOctNovDec55h116h163h309h374h365h369h328h256h192h98h58h
Data source: Isle Of Mull December Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Isle Of Mull During December

December in the Isle of Mull sees a notably low likelihood of sunny weather, with only a 15% chance of sunshine. This marks a consistent decline in sunny days as the year progresses, particularly after a brief spike in April at 48%. The transition into winter appears to bring an even gloomier forecast, as November also shows a modest 21% chance of sun. With the festive season coinciding with such cloudy conditions, visitors to Mull may want to plan for the typical overcast skies that characterize the colder months, making sunlit moments a delightful rarity.

Percentage of Sunny Days in December in Isle Of Mull

The chart illustrates the percentage of sunny days in Isle Of Mull 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 Isle Of Mull experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec30%31%15%48%33%23%25%24%17%15%21%15%
Data source: Isle Of Mull December chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Isle Of Mull in December

As December descends upon the Isle of Mull, daylight hours dwindle to a mere 6 hours, marking the shortest days of the year. This is a sharp contrast to the bright, extended days of summer, where June offers up to 17 hours of sunlight. The trend reveals a gradual increase in daylight from January's 7 hours to May's peak, before tapering down as the year closes. With each month, the island transitions from the long, bright evenings of summer to the cozy, dark days of winter, painting a picture of seasonal rhythm that shapes both life and landscape in this scenic locale.

Average Daylight Hours in Isle Of Mull for December

The chart illustrates the variation in daylight duration in Isle Of Mull throughout the year, with December highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec7h 35m9h 32m11h 53m14h 17m16h 26m17h 36m16h 58m15h12h 41m10h 19m8h 8m6h 56m
Data source: Isle Of Mull daylight hours, calculated by summing the hours between sunrise and sunset for each day.

December Winds in Isle Of Mull

As December arrives in the Isle of Mull, the wind begins to whisper reminders of the waning year, with an average speed of 5.4 m/s (12 mph). This month's winds reflect a subtle shift from the brisk breezes of early winter, which saw higher speeds in November at 6.6 m/s (15 mph). While December's winds are milder than those of the preceding month, they still carry the unmistakable chill that defines this coastal landscape. Compared to the summer months, where winds dulled to around 2.8 m/s (6 mph) in July, December's gusts serve to invigorate the senses, inviting both residents and visitors to embrace the island's rugged beauty amidst the seasonal transition.

Average December Wind Speed in Isle Of Mull

The chart displays monthly wind speed patterns in Isle Of Mull, 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.
JanFebMarAprMayJunJulAugSepOctNovDec4.87.35.44.24.44.42.83.34.35.76.65.4 m/s
Data source: Isle Of Mull December wind data, generated using information from the Copernicus Climate Change Service.

How December Weather in Isle Of Mull Compares to Other Months

The weather in Isle Of Mull 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 Isle Of Mull and find detailed weather information for every month.

December and January on the Isle of Mull exhibit similar temperature ranges, with average temperatures fluctuating between a minimum of -4°C (25°F) in December and -3°C (27°F) in January, and both months reaching a maximum of 12°C (54°F). However, December is typically wetter, receiving 247 mm (9.7 in) of precipitation over 23 days, compared to January’s 183 mm (7.2 in) over 19 days. Both months maintain a consistent humidity level of 86%, making them equally damp despite the difference in rainfall. For more detailed insights into January weather, visit Isle Of Mull weather in January.

In December, temperatures range from a minimum of -4°C (25°F) to a maximum of 12°C (54°F), with an average of 6°C (43°F). The month experiences significant precipitation, totaling 247 mm (9.7 in) over 23 days, alongside a high humidity level of 86%. In contrast, February sees slightly colder temperatures, with a minimum of -6°C (22°F) and a maximum of 11°C (52°F), averaging around 5°C (42°F). Precipitation is also lower at 225 mm (8.9 in) over 21 days, with humidity at a comparable 85%. For more detailed weather insights, you can check Isle Of Mull weather in February.

In December, the weather on the Isle of Mull is characterized by colder temperatures, with a minimum of -4°C (25°F) and an average of 6°C (43°F), peaking at a maximum of 12°C (54°F). This month also sees a significant amount of precipitation, totaling 247 mm (9.7 in) over 23 days, along with high humidity levels at 86%. In contrast, March offers slightly milder conditions, with temperatures ranging from a minimum of -3°C (26°F) to an average of 6°C (43°F) and a maximum of 14°C (57°F). Precipitation in March decreases to 193 mm (7.6 in) across 21 days, accompanied by a slightly lower humidity of 85%. For a more detailed understanding of March weather, check out the information here: Isle Of Mull weather in March.

December and April offer distinctly different weather conditions. In December, temperatures range from a chilly -4°C (25°F) at night to a mild 12°C (54°F) during the day, with an average of 6°C (43°F). This month also sees significant precipitation, with 247 mm (9.7 in) spread over 23 rainy days and a high humidity level of 86%. In contrast, April experiences more temperate conditions, with minimum temperatures slightly higher at -1°C (31°F) and maximums reaching 17°C (64°F), averaging 8°C (46°F). Additionally, precipitation drops to 72 mm (2.8 in) over just 14 days, and the humidity remains relatively consistent at 84%. For more detailed information, check Isle Of Mull weather in April.

In December, the weather tends to be much colder and wetter than in May, with temperatures ranging from a frosty -4°C (25°F) to a mild 12°C (54°F) and an average of 6°C (43°F). Additionally, December experiences significant precipitation of 247 mm (9.7 in) over 23 days, coupled with high humidity at 86%. In contrast, May sees a notable warming trend, with temperatures ranging from a minimum of 2°C (37°F) to a pleasant maximum of 20°C (69°F), and an average of 10°C (50°F). Precipitation drops significantly to 92 mm (3.6 in) over just 15 days, and humidity levels are slightly lower at 82%. For more details on the weather in May, you can check out Isle Of Mull weather in May.

December and June present stark contrasts in weather. In December, temperatures range from a chilly -4°C (25°F) at night to a mild 12°C (54°F) during the day, with an average temperature of 6°C (43°F). This month sees considerable precipitation, totaling 247 mm (9.7 in) over 23 days, coupled with high humidity levels at 86%. In contrast, June offers a much more temperate atmosphere, with minimum temperatures of 7°C (44°F) and maximums reaching 22°C (72°F), averaging 12°C (55°F). Rainfall decreases significantly to 137 mm (5.4 in) across 18 days, accompanied by slightly lower humidity at 84%. For a closer look at the June weather specifics, check out Isle Of Mull weather in June.

December and July present starkly contrasting weather conditions. In December, temperatures range from a frosty -4°C (25°F) to a mild 12°C (54°F), with an average of 6°C (43°F). This month is also marked by significant precipitation, totaling 247 mm (9.7 in) over 23 days, and the humidity hovers around a high 86%. In contrast, July experiences much warmer temperatures, with a minimum of 9°C (48°F) and a maximum of 22°C (72°F), averaging 14°C (57°F). Although it rains less in July, with 144 mm (5.7 in) of precipitation across 18 days, the humidity remains similar at 87%. For more details, visit Isle Of Mull weather in July.

December and August exhibit contrasting weather patterns, reflecting the seasonal shifts. In December, temperatures range from a chilly -4°C (25°F) at night to a mild 12°C (54°F) during the day, with an average of 6°C (43°F). This month also sees significant precipitation, totaling 247 mm (9.7 in) over about 23 days, accompanied by high humidity levels averaging 86%.

In contrast, August offers a much warmer experience, with temperatures starting at a minimum of 9°C (49°F), peaking at 21°C (70°F), and averaging around 14°C (57°F). While still experiencing rainfall on about 23 days, the total precipitation is lower at 184 mm (7.3 in) and humidity levels remain slightly elevated at 88%. For those considering visiting during the warmer months, more details can be found in the link provided: Isle Of Mull weather in August.

When comparing the weather in December and September, December tends to be much colder with average temperatures ranging from a minimum of -4°C to a maximum of 12°C, while September enjoys milder conditions with temperatures ranging from 3°C to 21°C. December also experiences higher precipitation, totaling 247 mm over 23 days, compared to September's 215 mm over 20 days. Additionally, the humidity levels are slightly higher in September at 89%, versus December's 86%. For more detailed information on September weather, you can visit Isle Of Mull weather in September.

December and October present distinct weather patterns, with December typically colder and more humid. In December, temperatures range from a chilly -4°C (25°F) to a maximum of 12°C (54°F), averaging around 6°C (43°F). The month sees significant precipitation at 247 mm (9.7 in) over 23 days, contributing to a high humidity level of 86%. In contrast, October enjoys milder conditions, with temperatures varying from a minimum of 3°C (37°F) to a pleasant 18°C (64°F), yielding an average of 10°C (51°F). Despite having greater total precipitation at 309 mm (12.2 in) across 24 days, October's slightly higher humidity of 89% still maintains a relatively comfortable atmosphere. For more insights into October's weather, visit Isle Of Mull weather in October.

In comparing the weather of November and December, December is generally colder with average temperatures ranging from -4°C (25°F) to a maximum of 12°C (54°F), while November sees milder temperatures ranging from -1°C (31°F) to 14°C (57°F). December also experiences more precipitation, with a total of 247 mm (9.7 in) over 23 days, compared to November's 219 mm (8.6 in) across 21 days. Humidity levels are slightly lower in December at 86%, compared to 90% in November. For more detailed information on November weather, you can visit Isle Of Mull weather in November.

Compare Isle Of Mull's Climate with Cities Worldwide

Conclusion: What to Expect From December Weather in Isle Of Mull

As December settles over the Isle of Mull, the weather showcases a distinct chill compared to the milder months of fall. Temperatures hover around a brisk average, often dipping into frosty lows that remind us winter has arrived. With nearly 23 days of precipitation, the island experiences a significant uptick in rainfall, creating a lush yet damp landscape. This time of year also brings heightened humidity, enveloping the isle in a mystical atmosphere. For those seeking to understand the nuances of Isle of Mull's weather throughout the year, explore more at Isle Of Mull Climate.