December Weather in Sandymount, Ireland

Last updated: March 17, 2025

December in Sandymount, Ireland is characterized by a cool and damp atmosphere, with temperatures ranging from a maximum of 13°C (56°F) to a chillier minimum of -2°C (28°F). The month sees an average temperature of 6°C (44°F), making it one of the colder times of the year. Rainfall is notable, accumulating to 94 mm (3.7 in) over approximately 15 days, contributing to a high humidity level of 84%. Visitors can expect a mix of wet and cool conditions, ideal for cozy indoor activities and picturesque walks along the coast.

December Temperature in Sandymount

In December, Sandymount, Ireland experiences a distinct chill as winter sets in, with temperatures dipping to a minimum of -2°C (28°F). The average temperature hovers around 6°C (44°F), while daytime highs reach a modest 13°C (56°F). This marks a gradual decline in temperatures compared to the milder months preceding it, particularly November, where the average was slightly warmer at 8°C (46°F). Visitors can expect crisp, cool days, making December a time for layering up and enjoying the festive atmosphere that permeates the air. As the year winds down, the colder temperatures signal the impending embrace of winter in this charming Irish locale.

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

The chart illustrates December temperature patterns in Sandymount, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec424344475257605956514643
Data source: Temperature data for Sandymount 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 Sandymount

December in Sandymount, Ireland, presents a notable transition as the year nears its close. With an average precipitation of 94 mm (3.7 in) spread across approximately 15 days, the month showcases a comforting consistency in rainfall. This amount, while slightly lower than November’s peak of 97 mm, still signifies the wet winter season. The steady pattern of rainfall during December hints at an ongoing trend from previous months, where precipitation remains prominent; notably, August, the wettest month, recorded 95 mm (3.8 in). As days grow shorter and temperatures drop, the persistent showers of December highlight Ireland’s characteristic maritime climate, offering a cozy backdrop as the holiday season unfolds.

December Precipitation Trends in Sandymount

The chart displays monthly precipitation patterns in Sandymount, 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.
JanFebMarAprMayJunJulAugSepOctNovDec578081527275809573879794
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Sandymount

In Sandymount, Ireland, December experiences a drop in humidity to 84%, continuing a seasonal trend characterized by relatively stable moisture levels throughout the year. From a high of 87% in October, the humidity gradually declines, reflecting the transition into winter. This month stands out as one of the driest periods, yet the figures remain consistently high compared to many other regions. The humidity fluctuates between 83% and 87% from May through November, with December maintaining a comforting level as the year closes, ensuring that despite the chill, the air retains a certain warmth that is characteristic of the Irish coastal climate.

December Average Humidity in Sandymount

This chart illustrates the average monthly humidity levels in Sandymount, 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 Sandymount

As December settles in Sandymount, the UV Index drops back to 1, reflecting a low exposure category that allows for a burn time of 45 minutes. This trend of diminishing UV levels continues from the previous months, offering a welcome respite from the high indexes of summer, which peaked at 8 in both June and July. While the spring and summer months bring increased sunlight and stronger UV rays, winter invites a time of greater caution for skin protection. With December's gentle UV levels, residents can enjoy the outdoor beauty without intense sun exposure. To stay informed about UV conditions throughout the year, check Sandymount UV Index.

Maximum UV Index Levels in Sandymount for December

The chart shows the monthly maximum UV Index (UVI) for Sandymount 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.
JanFebMarAprMayJunJulAugSepOctNovDec124578875321
Data source: Sandymount 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 Sandymount

In December, Sandymount experiences a notable dip in sunshine, with only 95 hours illuminating the short winter days. This marks a sharp decline from the vibrant 391 hours of sunlight in May, highlighting the transition from the sun-drenched months into the cooler winter season. As the year draws to a close, December’s sunlight lags behind both November and the brisk autumn months, reflecting a broader trend of diminishing daylight. Despite the gray skies typical of this time, the warmth of the community and holiday spirit can still shine brightly against the festive backdrop. As the sun sets earlier, it invites cozy gatherings and the beauty of twinkling lights, making each sunlit hour feel even more precious.

Monthly Sunshine Duration in Sandymount: December Highlighted

The December sunshine duration represents the total number of hours Sandymount 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.
JanFebMarAprMayJunJulAugSepOctNovDec83h147h191h311h391h385h385h339h294h230h120h95h
Data source: Sandymount December Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Sandymount During December

In December, Sandymount, Ireland, experiences a 23% chance of sunny weather, aligning closely with the trends seen in the preceding months. This modest likelihood reflects a consistent variability throughout the year, with April boasting the highest chance at 44%, while the later winter months, like November, offer slightly better odds at 26%. As we transition from the vibrant warmth of autumn to the chill of early winter, December maintains a similar incidence of sunlight as earlier months, notably February and August, which hover around the lower 20s percentage-wise. As the year rounds off, the weather can be unpredictable; however, the chances of basking in occasional winter sunshine remain a hopeful reality for residents and visitors alike.

Percentage of Sunny Days in December in Sandymount

The chart illustrates the percentage of sunny days in Sandymount 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 Sandymount experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec23%21%22%44%31%24%30%23%20%19%26%23%
Data source: Sandymount December chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Sandymount in December

As the year unfolds in Sandymount, Ireland, the daylight duration begins at a modest eight hours in January, gradually increasing to a peak of sixteen hours during the summer months of June and July. This delightful summer abundance gives way to a gradual descent, with daylight hours tapering off as autumn deepens, hitting ten hours in October and falling back to eight hours by November. In December, the days are at their shortest, offering just seven hours of daylight, a reflective time that contrasts sharply with the vibrant and lengthy days of spring and summer. This cyclical rhythm of light and dark not only marks the passage of seasons but also influences the lifestyle and mood of this charming coastal community.

Average Daylight Hours in Sandymount for December

The chart illustrates the variation in daylight duration in Sandymount throughout the year, with December highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 7m9h 49m11h 54m14h 2m15h 54m16h 53m16h 22m14h 40m12h 37m10h 30m8h 36m7h 34m
Data source: Sandymount daylight hours, calculated by summing the hours between sunrise and sunset for each day.

December Winds in Sandymount

As the year draws to a close, December in Sandymount, Ireland, presents a noteworthy return to more invigorating winds, with an average speed of 4.9 m/s (11 mph). This aligns with the wind patterns of the preceding months, particularly November, which also boasted similar speeds. The late autumn months of October and November typically showcase a resurgence of breezy conditions, contrasting with the calmer days of July, where winds dipped to a gentle 2.7 m/s (6 mph). Overall, the transition into December signals a steady uptick in wind activity, reflecting the dynamic climate of this coastal locale. As winter approaches, the persistent breezes become a hallmark of Sandymount, inviting both residents and visitors to embrace the rugged charm of the season.

Average December Wind Speed in Sandymount

The chart displays monthly wind speed patterns in Sandymount, 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.
JanFebMarAprMayJunJulAugSepOctNovDec4.56.04.73.44.03.72.73.63.44.94.84.9 m/s
Data source: Sandymount December wind data, generated using information from the Copernicus Climate Change Service.

How December Weather in Sandymount Compares to Other Months

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

December and January present quite similar temperature ranges, with both months experiencing mild maximum temperatures of around 13°C (56°F). However, December tends to be slightly warmer on average, with temperatures ranging from a minimum of -2°C (28°F) to an average of 6°C (44°F), compared to January's minimum of -3°C (26°F) and an average of 5°C (42°F). Precipitation is notably higher in December, accumulating 94 mm (3.7 in) over 15 days, while January sees just 57 mm (2.2 in) over 10 days. The humidity remains consistent, with December at 84% and January at 85%. For more detailed weather insights, you can check Sandymount weather in January.

In December, temperatures frequently range from a chilly -2°C (28°F) to a mild high of 13°C (56°F), with an average temperature of 6°C (44°F). This month also sees considerable precipitation, with about 94 mm (3.7 in) falling over 15 days and humidity levels around 84%. In contrast, February offers similar minimum temperatures at -2°C (29°F) but generally reaches a slightly higher maximum of 14°C (58°F), maintaining an average temperature of 6°C (43°F). This month experiences less rainfall, totaling about 80 mm (3.1 in) over 14 days, with a slightly higher humidity of 86%. For a closer look at the weather specifics during this month, you can refer to Sandymount weather in February.

In December, temperatures typically range from a minimum of -2°C (28°F) to a maximum of 13°C (56°F), with an average of 6°C (44°F). The month receives about 94 mm (3.7 in) of precipitation over 15 days, accompanied by a humidity level of 84%. In contrast, March experiences slightly lower minimum temperatures at -5°C (24°F) but sees a higher average of 7°C (44°F) and a maximum of 16°C (61°F). This month has a total precipitation of 81 mm (3.2 in) over the same number of days, with humidity slightly rising to 86%. This comparison highlights the trend toward warmer and progressively wetter conditions as winter transitions into spring. For more specific details, you can check out Sandymount weather in March.

In comparing the weather between December and April, we see distinct differences in temperature and precipitation. December features a colder climate with average temperatures ranging from a chilly -2°C (28°F) to a maximum of 13°C (56°F), while April enjoys milder conditions with averages from -2°C (29°F) to highs of 19°C (66°F). Precipitation also decreases in April, with 52 mm (2.0 in) over 11 days compared to December's 94 mm (3.7 in) across 15 days, leading to slightly lower humidity levels in April at 85%, compared to December's 84%. For more detailed insights into April weather, you can explore Sandymount weather in April.

December and May present quite contrasting weather conditions. In December, temperatures typically range from a minimum of -2°C (28°F) to a maximum of 13°C (56°F), with an average temperature of about 6°C (44°F). The month features considerable precipitation, averaging 94 mm (3.7 in) over approximately 15 days, and maintains a high humidity level of 84%. In contrast, May experiences milder temperatures, with a minimum of 0°C (32°F) and a maximum of 21°C (71°F), resulting in a more comfortable average of 11°C (52°F). Precipitation drops to 72 mm (2.8 in), spread across about 14 days, while humidity remains slightly lower at 83%. For a closer look at the weather conditions in May, you can check out Sandymount weather in May.

December weather in Sandymount is characterized by chilly temperatures, with averages around 6°C (44°F) and maximums reaching only 13°C (56°F). The month experiences a notable amount of precipitation at 94 mm (3.7 in) spread across about 15 days, while humidity levels remain high at 84%. In contrast, June brings a more pleasant climate, with minimum temperatures starting at 6°C (42°F) and average highs climbing to 24°C (75°F). Although it has fewer rainy days than December, June sees 75 mm (3.0 in) of rainfall, accompanied by slightly higher humidity at 85%. For a closer look at June's weather specifics, visit Sandymount weather in June.

In December, temperatures can dip as low as -2°C (28°F), with an average of 6°C (44°F) and a maximum reaching 13°C (56°F). The month experiences significant precipitation, averaging 94 mm (3.7 in) over 15 days, contributing to a high humidity level of 84%. In contrast, July brings more moderate temperatures, with a minimum of 8°C (46°F), an average of 16°C (60°F), and a maximum of 25°C (77°F). Despite slightly lower precipitation at 80 mm (3.2 in) across 14 days, humidity remains relatively high at 86%. For more insights on July weather, you can check Sandymount weather in July.

December and August present two starkly contrasting weather profiles. In December, temperatures range from a chilly -2°C (28°F) at night to a mild 13°C (56°F) during the day, while average daily temperatures hover around 6°C (44°F). The month experiences significant precipitation, with 94 mm (3.7 in) falling over approximately 15 days, accompanied by a high humidity level of 84%.

In contrast, August offers a much more temperate climate, with nighttime lows of 7°C (45°F) and daytime highs reaching up to 23°C (73°F). The average temperature sits at a comfortable 15°C (60°F), and while it sees similar rainfall at 95 mm (3.8 in), it occurs over one more day, making for a more humid environment at 85%. For more detailed insights on August weather, you can visit Sandymount weather in August.

December weather is characterized by colder temperatures, with a minimum of -2°C (28°F) and an average of 6°C (44°F), compared to September, which enjoys milder conditions with a minimum of 3°C (38°F) and an average of 13°C (56°F). In December, the maximum temperature reaches only 13°C (56°F), whereas September can see highs of up to 22°C (72°F). Precipitation levels are slightly higher in December, totaling 94 mm (3.7 in) over about 15 days, while September experiences 73 mm (2.9 in) of rain across 14 days. Humidity levels are relatively close, with December at 84% and September at 86%. For more details on September weather in Sandymount, you can visit Sandymount weather in September.

When comparing the weather in December and October, December tends to be colder with minimum temperatures dropping to -2°C (28°F) and an average high of 13°C (56°F). In contrast, October experiences milder temperatures, with a minimum of 1°C (35°F) and an average high of 18°C (65°F). Both months see significant precipitation, with December receiving 94 mm (3.7 in) over approximately 15 days, slightly more than October's 87 mm (3.4 in) over 14 days. Humidity levels are relatively high in both months, with December at 84% and October slightly higher at 87%. For more details on October weather specifically, you can visit Sandymount weather in October.

December generally experiences cooler temperatures compared to November, with minimums dropping to -2°C (28°F) and an average of 6°C (44°F), whereas November sees milder conditions that range from a minimum of 0°C (32°F) to an average of 8°C (46°F). While both months have similar precipitation levels—December receiving 94 mm (3.7 in) over 15 days and November with 97 mm (3.8 in) over 14 days—the humidity remains fairly consistent, recorded at 84% in December and 86% in November. For more detailed insights, you can refer to Sandymount weather in November.

Compare Sandymount's Climate with Cities Worldwide

Conclusion: What to Expect From December Weather in Sandymount

As December embraces Sandymount, the weather takes a noticeable turn, presenting a contrast to the milder months that precede it. With temperatures averaging around 6°C (44°F) and dipping to a chilly -2°C (28°F), this season is marked by its briskness. In addition, the month is characterized by a relative increase in precipitation, with 15 days of rainfall contributing to a total of 94 mm (3.7 in). The high humidity at 84% adds to the distinct winter atmosphere, making it a month of cozy indoor gatherings rather than outdoor adventures. For a complete overview of the region's weather patterns throughout the year, visit Sandymount Climate.