December Weather in Arklow, Ireland

Last updated: March 17, 2025

December in Arklow, Ireland showcases a chilly climate, with average temperatures hovering around 7°C (44°F), peaking at a maximum of 13°C (56°F) and occasionally dipping to a brisk -2°C (28°F). This month also brings significant precipitation, totaling 107 mm (4.2 in) over approximately 14 days, resulting in a humid atmosphere with an average humidity level of 84%. Visitors can expect a quintessential Irish winter, offering a blend of cold air and frequent rain showers, perfect for cozy indoor activities and enjoying the local hospitality.

December Temperature in Arklow

In December, Arklow, Ireland experiences a notable drop in temperatures as winter settles in. The minimum temperature hovers around -2°C (28°F), while the average rises slightly to 7°C (44°F), making it one of the cooler months of the year. Daytime highs can reach up to 13°C (56°F), but the chill in the air is unmistakable as the year draws to a close. This month marks the transition from the mild autumn temperatures of November, which averaged 8°C (47°F), to the frigid embrace of January, bringing a sense of cozy anticipation for the holidays and the beauty of the winter landscape. As the days grow shorter, Arklow's winter charm beckons, inviting cozy gatherings and warm festivities.

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

The chart illustrates December temperature patterns in Arklow, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec434344475257616057524744
Data source: Temperature data for Arklow 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 Arklow

In Arklow, Ireland, December often marks the culmination of a notably wet year, showcasing a precipitation total of 107 mm (4.2 in). This figure hints at a trend of increasing rainfall as the year progresses, as December's total closely follows November's peak of 108 mm (4.3 in). With 14 days of rain in December, the month remains consistently damp, aligning with the late-autumn pattern of elevated precipitation. This trends toward heavier rainfall creates a vivid contrast with the drier months earlier in the year, like January with just 53 mm (2.1 in). As the final chapter of the year's weather narrative, December reinforces Arklow’s reputation for lush, green landscapes nurtured by its abundant rainfall.

December Precipitation Trends in Arklow

The chart displays monthly precipitation patterns in Arklow, 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.
JanFebMarAprMayJunJulAugSepOctNovDec53887955706768967693108107
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Arklow

In December, Arklow, Ireland experiences a humidity level of 84%, which is a slight dip from the consistent 86% seen in the preceding months. This modest decrease marks the end of a year characterized by relatively high humidity levels, ranging from 83% in May to a peak of 87% in October. Notably, the winter months tend to maintain a humid atmosphere, with barely any fluctuations throughout the year, suggesting that Arklow's coastal climate keeps the air moist even as temperatures cool down. As the year concludes, December's humidity levels remind us of the region's consistently damp conditions, setting the stage for the wet winter months ahead.

December Average Humidity in Arklow

This chart illustrates the average monthly humidity levels in Arklow, 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%86%86%85%83%85%86%85%86%87%87%84%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Arklow

In Arklow, Ireland, the UV Index trends throughout the year present a clear pattern of seasonal variation. The index begins at a low of 1 in January and December, indicating minimal risk of harm from unprotected sun exposure, with burn times reaching up to 45 minutes. As spring approaches, levels rise, peaking at a moderate 5 in April and fluctuating until they hit very high levels of 8 in June and July, where the burn time drastically shortens to just 15 minutes. Following the summer months, the index begins to taper off, returning to moderate levels in the early fall, before settling back to the low levels of winter. This yearly cycle underscores the importance of adapting sun protection measures as the seasons change. For more information on the UV trends, visit Arklow UV Index.

Maximum UV Index Levels in Arklow for December

The chart shows the monthly maximum UV Index (UVI) for Arklow 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: Arklow 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 Arklow

In December, Arklow, Ireland, experiences a gentle retreat from the bright exuberance of summer, yielding 109 hours of sunshine. This follows a trend of steadily decreasing daylight from the vibrant heights of April's 324 hours and May's remarkable 409 hours. The month of December represents the culmination of a year marked by a gradual decline in sunshine hours, dropping significantly from the summer months of June and July, which boast over 400 hours each. As the year winds down, the sky transitions into twilight, with November already having reduced hours to 134. Yet, even in this subdued month, Arklow’s December sunlight adds a serene glow to the winter landscape, offering a cozy charm that invites reflection before the return of brighter days.

Monthly Sunshine Duration in Arklow: December Highlighted

The December sunshine duration represents the total number of hours Arklow 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.
JanFebMarAprMayJunJulAugSepOctNovDec91h155h212h324h409h404h411h366h312h247h134h109h
Data source: Arklow December Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Arklow During December

In Arklow, Ireland, the likelihood of basking in sunny weather during December stands at 23%, which reflects a modest chance compared to other months. As the year winds down, this percentage aligns closely with the cloudier autumn months of October and November, suggesting that sunshine remains somewhat elusive as winter approaches. A notable peak occurs in April with 48%, contributing to the overall trend of increased sunshine in spring. However, the narrative of diminishing daylight hours and chillier temperatures in December serves as a reminder that while you might catch a few rays, it’s wise to prepare for the typical Irish winter weather.

Percentage of Sunny Days in December in Arklow

The chart illustrates the percentage of sunny days in Arklow 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 Arklow experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec26%21%25%48%31%23%34%28%22%19%29%23%
Data source: Arklow December chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Arklow in December

In Arklow, Ireland, the daylight duration experiences a remarkable shift throughout the year. Starting January with just 8 hours of daylight, the days progressively lengthen, peaking in June and July with a glorious 16 hours of sunlight. This vibrant crescendo of daylight gradually tapers off as autumn approaches, dropping to 10 hours in October and back down to 8 hours by November. December marks the year's nadir with a modest 7 hours of daylight, as the short days illustrate nature’s cyclical rhythm. Overall, the contrast between the bright, long summer days and the subdued winter light highlights the enchanting seasonal transitions that define life in this coastal town.

Average Daylight Hours in Arklow for December

The chart illustrates the variation in daylight duration in Arklow throughout the year, with December highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 14m9h 53m11h 54m13h 58m15h 47m16h 45m16h 14m14h 36m12h 36m10h 33m8h 41m7h 42m
Data source: Arklow daylight hours, calculated by summing the hours between sunrise and sunset for each day.

December Winds in Arklow

As December settles in Arklow, the average wind speed picks up, mirroring a trend observed throughout the year. With gusts reaching 5.1 m/s (11 mph), December's winds are among the strongest of the year, matching those of October. This uptick is a notable contrast to the summer months, where the winds mellowed significantly, dropping to a gentle 2.9 m/s (6 mph) in July. After a brief spring lull in April, where winds dipped to a mere 3.6 m/s (8 mph), the year gradually sees a resurgence in wind strength, hinting at the transition into the winter months. As the year winds down, December's brisk breezes remind us of nature's persistent rhythm, closing the year on a spirited note.

Average December Wind Speed in Arklow

The chart displays monthly wind speed patterns in Arklow, 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.
JanFebMarAprMayJunJulAugSepOctNovDec4.76.34.83.64.13.92.93.93.45.14.65.1 m/s
Data source: Arklow December wind data, generated using information from the Copernicus Climate Change Service.

How December Weather in Arklow Compares to Other Months

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

December and January share similar temperature ranges, with both months experiencing minimums of -2°C (28°F) and maximums reaching 13°C (56°F). However, December is slightly warmer on average at 7°C (44°F) compared to January's average of 6°C (43°F). Notably, December is much wetter, receiving 107 mm (4.2 in) of precipitation over 14 days, while January sees significantly less rainfall at 53 mm (2.1 in) across 10 days. The humidity is relatively consistent, hovering around 84% in December and 85% in January. For a more detailed look at January's weather, visit Arklow weather in January.

In December, the weather generally sees a range of temperatures with a minimum of -2°C (28°F) and an average of 7°C (44°F), peaking at a maximum of 13°C (56°F). During this month, precipitation is quite frequent, with 107 mm (4.2 in) falling over 14 days, and humidity levels are relatively high at 84%.

In contrast, February experiences slightly cooler temperatures, with a minimum of -3°C (28°F) and an average of 6°C (44°F), reaching a maximum of 14°C (58°F). While precipitation decreases to 87 mm (3.4 in), rain is still common, occurring over 15 days, and humidity remains similar at 86%. Overall, February tends to be a bit drier and cooler compared to December. For more specific details, you can visit Arklow weather in February.

December and March exhibit distinct differences in weather patterns. In December, the temperatures range from a minimum of -2°C (28°F) to a maximum of 13°C (56°F), with an average temperature of 7°C (44°F). This month experiences higher precipitation levels of 107 mm (4.2 in) over about 14 days, along with relative humidity at 84%. In contrast, March temperatures vary from a slightly cooler minimum of -5°C (23°F) to a more pleasant maximum of 15°C (60°F), with a similar average of 7°C (45°F). March sees a decrease in precipitation to 79 mm (3.1 in) spread over 15 days and a slightly higher humidity level of 86%. For more detailed information on March weather, you can visit Arklow weather in March.

December and April weather in Arklow presents notable differences. In December, temperatures range from a chilly -2°C (28°F) to a more moderate 13°C (56°F), with an average of 7°C (44°F). This month also sees higher precipitation, totaling 107 mm (4.2 in) over approximately 14 days, and humidity levels remain relatively high at 84%. In contrast, April offers slightly warmer conditions, with minimum temperatures still dipping to -2°C (29°F), but reaching a comfortable maximum of 18°C (65°F) and an average of 8°C (47°F). Precipitation drops significantly to 55 mm (2.2 in) over 11 days, while humidity stays comparable at 85%. For a closer look at the specific weather conditions in April, you can check Arklow weather in April.

December and May exhibit strikingly different weather patterns. In December, temperatures can range from a chilly -2°C (28°F) to a mild 13°C (56°F), with an average around 7°C (44°F). The month is also characterized by significant precipitation, totaling 107 mm (4.2 in) over about 14 days, and a high humidity level of 84%. In contrast, May showcases more pleasant weather, with temperatures ranging from 1°C (33°F) to a warm 21°C (69°F) and an average temperature of 11°C (52°F). Precipitation decreases to 70 mm (2.8 in) over approximately 12 days, while humidity remains relatively high at 83%. For a more detailed look at the weather in May, you can visit Arklow weather in May.

December and June present markedly different weather conditions. In December, temperatures can drop to a minimum of -2°C (28°F) with an average of around 7°C (44°F) and a maximum of 13°C (56°F). The month is characterized by higher precipitation levels, totaling 107 mm (4.2 in) over approximately 14 days, accompanied by a humidity level of 84%. In contrast, June experiences milder temperatures, ranging from a minimum of 6°C (43°F) to an average of 14°C (57°F), peaking at a more comfortable 25°C (77°F). Precipitation in June is significantly lower at 67 mm (2.6 in) spread over 13 days, with humidity slightly higher at 85%. For a detailed look at the weather in June, you can visit Arklow weather in June.

In December, Arklow experiences cooler temperatures, with a minimum of -2°C (28°F) and an average around 7°C (44°F), while reaching a maximum of 13°C (56°F). The month is characterized by higher precipitation, totaling 107 mm (4.2 in) over approximately 14 days, and a relatively high humidity of 84%. In stark contrast, July showcases warmer weather, with temperatures ranging from a minimum of 7°C (45°F) to a comfortable average of 16°C (61°F) and a maximum of 25°C (78°F). Precipitation decreases to 68 mm (2.7 in) across about 13 days, while humidity remains slightly elevated at 86%. For more details on July weather in Arklow, check out Arklow weather in July.

December and August showcase contrasting weather patterns. In December, temperatures can drop as low as -2°C (28°F), with an average of 7°C (44°F) and a maximum of only 13°C (56°F). This month also sees higher precipitation levels, averaging 107 mm (4.2 in) over 14 days, accompanied by relatively high humidity at 84%. In sharp contrast, August offers milder temperatures, with a minimum of 7°C (45°F) and an average of 15°C (60°F), peaking at 23°C (73°F). Precipitation in August is slightly lower at 96 mm (3.8 in) over 15 days, and humidity remains consistent at 85%. For further insights, check out Arklow weather in August.

When comparing the weather in December and September, notable differences emerge in temperature and precipitation. December typically sees cooler temperatures, with a minimum of -2°C (28°F) and an average of 7°C (44°F), while September enjoys milder conditions, with temperatures ranging from a minimum of 3°C (37°F) to an average of 14°C (57°F) and reaching a maximum of 23°C (73°F). In terms of precipitation, December experiences more rainfall, totaling 107 mm (4.2 in) over 14 days, compared to September's 76 mm (3.0 in) across 13 days. However, both months maintain high humidity levels, with December at 84% and September at 86%. For more details, you can visit Arklow weather in September.

In comparing the weather between October and December, December tends to be significantly cooler, with average temperatures ranging from a minimum of -2°C (28°F) to a maximum of 13°C (56°F), compared to October's milder temperatures of 1°C (34°F) to 18°C (65°F). Additionally, December experiences more precipitation, totaling 107 mm (4.2 in) over 14 days, while October's precipitation is slightly lower at 93 mm (3.6 in) over the same number of days. Despite similar precipitation days, December's higher humidity at 84% compared to October's 87% contributes to a chillier atmosphere. For a detailed view of October's weather, you can visit Arklow weather in October.

December generally experiences cooler temperatures compared to November, with a minimum temperature that can drop to -2°C (28°F) versus November’s 0°C (33°F). The average temperature in December is 7°C (44°F), slightly lower than November’s average of 8°C (47°F), and while both months have similar maximum temperatures, December peaks at 13°C (56°F) compared to November’s 15°C (59°F). In terms of precipitation, December sees 107 mm (4.2 in) over 14 days, closely mirroring November's 108 mm (4.3 in) across 15 days. Humidity remains high in both months, with December at 84% and November slightly higher at 86%. For more detailed weather insights, check out Arklow weather in November.

Compare Arklow's Climate with Cities Worldwide

Conclusion: What to Expect From December Weather in Arklow

As December settles in Arklow, the weather takes on a distinct chill, marking a shift from the milder months. With temperatures hovering around a cool average of 7°C (44°F) and dipping to lows that can reach -2°C (28°F), this month is characterized by its increased humidity and frequent precipitation, seeing an average of 14 wet days. The total rainfall of 107 mm (4.2 in) contributes to a damp atmosphere, contrasting sharply with the sunnier, drier days of earlier months. Embracing the unique charm of December, residents and visitors can experience the freshness of winter while enjoying the scenic beauty of this coastal town. For a deeper understanding of what to expect throughout the year, visit Arklow Climate.