Last updated: March 17, 2025
In Dun Laoghaire, Ireland, December weather showcases a striking contrast, with maximum temperatures reaching a pleasant 13°C (56°F), while the average settles around a crisp 6°C (44°F), and chilly lows dipping to -2°C (28°F). Visitors should brace for the 84% humidity that often blankets the coastal town, contributing to a raw, invigorating feel in the air. December sees about 94 mm (3.7 in) of precipitation over 15 days, making it a month where rain is frequent but often interspersed with moments of respite. This dynamic weather paints a vivid picture of winter in Dun Laoghaire, inviting both adventure and cozy retreat.
As December settles in Dun Laoghaire, the temperatures begin to dip, marking a transition into the heart of winter. With minimums reaching as low as -2°C (28°F) and an average temperature around 6°C (44°F), chilly breezes sweep through the coastal town. Yet, there’s a gentle warmth in the air compared to the harsher winter months ahead. The highs typically cap at 13°C (56°F), resembling the mildness of November, yet hinting at the cold that January and February will bring. This month embraces a cozy charm, inviting locals and visitors alike to enjoy the brisk coastal walks and festive atmosphere while wrapping up in layers to savor the serene beauty of December on the Irish coast.
December in Dun Laoghaire, Ireland, marks the transition into winter, bringing an average precipitation of 94 mm (3.7 in) over 15 days of the month. This notable figure continues the trend observed in the preceding months, particularly November, which recorded 97 mm (3.8 in) on a similar number of rainy days. As the year closes, December's rainfall is slightly lower than November's yet remains significantly higher than earlier months like April. This consistent precipitation paints a picture of a climate that is both lush and damp during the latter part of the year, setting a cozy, if wet, backdrop for the festive season.
December in Dun Laoghaire sees humidity levels around 84%, reflecting a slight dip from the preceding months, which consistently hovered in the 85-87% range. This trend indicates that while the winter months bring cooler temperatures, the coastal town maintains a relatively high humidity level, typical of its maritime climate. Notably, November's average humidity was 86%, similar to the 86% experienced in summer months like July and September, suggesting that Dun Laoghaire's humidity remains fairly stable year-round. As the year comes to an end, residents can expect that the lingering moisture in the air continues to contribute to the town's charming, albeit brisk, winter atmosphere.
In Dun Laoghaire, Ireland, the UV Index sees a notable shift throughout the year, reflecting changing sun exposure levels. Starting from January with a low UV Index of 1, the potential for sunburn remains minimal, with a burn time of about 45 minutes. As spring approaches, the index rises to a moderate 4 in March and 5 in April, indicating a need for increased caution. The summer months bring heightened sun intensity, with the index peaking at 8 in June and July, where even short exposures can lead to burns in just 15 minutes. However, by the time December rolls around, the UV Index drops back to 1, providing a welcome reprieve from the stronger rays of previous months. This cyclical pattern emphasizes the importance of sun safety year-round. For more detailed information, visit Dun Laoghaire UV Index.
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In Dun Laoghaire, Ireland, the shift in daylight hours throughout the year is striking. As December settles in, the year wraps up with a modest 95 hours of sunshine, a notable dip from the vibrant 391 hours seen in May. This monthly trend highlights the gradual fading of brightness as autumn gives way to the chill of winter. The peak of sunshine comes in late spring and early summer, where the days stretch luxuriously long, inviting locals and visitors alike to bask in the warmth. However, as the year draws to a close, and with only 83 hours of sunshine in January to follow, the cozy embrace of winter emerges, contrasting sharply with the summer's brightness. This seasonal cycle serves as a gentle reminder of nature's rhythm, encouraging Dun Laoghaire's residents to find joy in the quieter, cooler days ahead.
In Dun Laoghaire, Ireland, the likelihood of sunny weather in December stands at a modest 23%, reflecting a trend of relatively low sunshine prospects during the winter months. While the chances of sun are slightly higher than in October and September, which dip to 19% and 20% respectively, they still fall short of the sunnier months, such as April and May, where one can expect 44% and 31% chances of sunshine. As winter sets in, the overall pattern shows that while December may offer occasional glimpses of sun, the long, grey days typical of this season remain dominant. Embracing the beauty of Dun Laoghaire’s coastal charm, even amidst the clouds, can make for a magical winter experience.
In Dun Laoghaire, Ireland, the daylight duration follows a distinct seasonal rhythm. As winter approaches, December brings the year's shortest days, offering just 7 hours of sunlight. This is a notable decline from the 8 hours in November and reflects the stark contrast to the peak summer months, where daylight stretches up to 16 hours in June and July. The gradual increase from the depths of winter back to vibrant spring is palpable, beginning with a modest rise in January and continuing through blossoming spring months, where daylight reaches 14 hours by April and 15 hours by May. With this cyclical pattern, residents can look forward to the return of sunlight after the dark winter months, creating a sense of anticipation and appreciation for the longer days ahead.
As December arrives in Dun Laoghaire, the wind begins to pick up, averaging 4.9 m/s (11 mph), mirroring the conditions seen in October and November. This consistent wind speed suggests the onset of winter brings a chill that invigorates the coastal air, creating a lively atmosphere. Interestingly, after a mid-year dip where July recorded the calmest winds at 2.7 m/s (6 mph), the latter months see a resurgence, hinting at a seasonal pattern that seasonal sailors and walkers can look forward to. The winds in December, while bracing, invite both adventure and reflection, embodying the unique charm of this Irish seaside town as it transitions into the heart of winter.
The weather in Dun Laoghaire 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 Dun Laoghaire and find detailed weather information for every month.
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 sees considerable precipitation, totaling 94 mm (3.7 in) over 15 days, and humidity averages around 84%. In contrast, January is slightly colder, with temperatures dipping to a minimum of -3°C (26°F) and maintaining the same maximum of 13°C (56°F), resulting in an average of 5°C (42°F). Precipitation decreases significantly to 57 mm (2.2 in) over just 10 days, while humidity remains relatively stable at 85%. For more detailed insights on January weather, visit Dun Laoghaire weather in January.
In comparing the weather between December and February, we see some notable similarities and subtle variations. Both months feature a minimum temperature of -2°C, but February tends to be slightly warmer on average, with an average of 6°C compared to December's 6°C as well. Interestingly, February's maximum temperature reaches 14°C, just one degree higher than December's 13°C. When it comes to precipitation, December has a slightly higher total of 94 mm over 15 days, while February experiences 80 mm over 14 days, indicating a marginally drier month. Humidity levels are also comparable, with December at 84% and February slightly higher at 86%. For more specific information on February's weather, you can explore this link: Dun Laoghaire weather in February.
In December, temperatures typically range from a low of -2°C (28°F) to a high of 13°C (56°F), with an average temperature of 6°C (44°F). The month sees approximately 94 mm (3.7 in) of precipitation over about 15 days, with humidity levels around 84%. In contrast, March experiences slightly colder minimum temperatures of -5°C (24°F) but averages a higher daily temperature of 7°C (44°F) and a maximum of 16°C (61°F). Precipitation is somewhat lower at 81 mm (3.2 in) over the same 15 days, coupled with a modest increase in humidity to 86%. For more detailed information, check out Dun Laoghaire weather in March.
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 sees considerable rainfall, accumulating to 94 mm (3.7 in) over about 15 days, and the humidity remains relatively high at 84%. In contrast, April brings milder conditions, with temperatures starting at the same minimum of -2°C (29°F) but rising significantly to an average of 8°C (47°F) and a peak of 19°C (66°F). Rainfall is also lower in April, totaling 52 mm (2.0 in) across 11 days, and humidity remains slightly elevated at 85%. For more details on the weather in April, you can check Dun Laoghaire weather in April.
December and May present contrasting weather patterns. In December, temperatures range from a chilly minimum of -2°C (28°F) to a relatively mild maximum of 13°C (56°F), with an average of 6°C (44°F). The month sees considerable precipitation, with 94 mm (3.7 in) over 15 days, resulting in a high humidity level of 84%. In comparison, May brings warmer conditions, with temperatures varying from a minimum of 0°C (32°F) to a pleasant maximum of 21°C (71°F) and an average of 11°C (52°F). Precipitation decreases to 72 mm (2.8 in) spread over 14 days, maintaining a similar humidity level of 83%. For a closer look at May’s weather in Dun Laoghaire, you can visit Dun Laoghaire weather in May.
The weather in December is notably colder than in June, with temperatures ranging from a chilly -2°C (28°F) to a milder average of 6°C (44°F). In contrast, June brings more pleasant conditions, with temperatures starting at a minimum of 6°C (42°F) and peaking at an average of 14°C (57°F) and maxing out at 24°C (75°F). Both months experience precipitation on approximately 15 days, but December sees higher levels overall at 94 mm (3.7 in) compared to June's 75 mm (3.0 in). Humidity levels are similar, hovering around 84% in December and 85% in June. For more detailed information about how the weather differs in June, check out Dun Laoghaire weather in June.
The weather in December is notably cooler than in July, with temperatures ranging from a minimum of -2°C (28°F) to a maximum of 13°C (56°F) and an average of 6°C (44°F). In contrast, July enjoys milder conditions, with temperatures varying from 8°C (46°F) to 25°C (77°F) and an average of 16°C (60°F). While December sees more precipitation at 94 mm (3.7 in) over approximately 15 days, July has a slightly lower total of 80 mm (3.2 in) across 14 days. Both months experience high humidity, with December at 84% and July at 86%, contributing to a distinctly damp atmosphere in winter and a more comfortable feel during the summer. For more details, you can check out Dun Laoghaire weather in July.
In December, the weather tends to be much colder, with average temperatures ranging from a minimum of -2°C (28°F) to a maximum of 13°C (56°F). The month also sees relatively high humidity at 84% and experiences precipitation on about 15 days, totaling 94 mm (3.7 in). In contrast, August offers a milder climate, with temperatures averaging between 7°C (45°F) and 23°C (73°F). The humidity is slightly higher at 85%, and rainfall is very similar to December, occurring on about 16 days and accumulating 95 mm (3.8 in). For more details about the weather specifics in August, you can check Dun Laoghaire weather in August.
In comparing the weather between December and September, we see a notable shift in temperature and precipitation. December exhibits cooler temperatures with a minimum of -2°C (28°F) and an average of 6°C (44°F), while September is milder, with temperatures ranging from a minimum of 3°C (38°F) to an average of 13°C (56°F) and a maximum of 22°C (72°F). Additionally, December receives more precipitation, totaling 94 mm (3.7 in) over 15 days, compared to September's 73 mm (2.9 in) over 14 days. Humidity levels are quite similar, with December at 84% and September slightly higher at 86%. For more specific details on September weather, you can visit Dun Laoghaire weather in September.
In comparing the weather between December and October, December tends to be colder with average temperatures ranging from a minimum of -2°C (28°F) to a maximum of 13°C (56°F), while October's temperatures are milder, with a minimum of 1°C (35°F) and a maximum of 18°C (65°F). Precipitation levels are relatively similar, with December receiving 94 mm (3.7 in) over 15 days and October slightly less at 87 mm (3.4 in) over 14 days. Additionally, humidity is slightly lower in December at 84%, compared to 87% in October. For more details on October's weather, you can visit Dun Laoghaire weather in October.
In comparing the weather between November and December, we see some notable differences. December experiences slightly colder temperatures, with a minimum of -2°C compared to November's minimum of 0°C. The average temperature in December is 6°C, while in November, it is slightly warmer at 8°C. Despite both months having similar precipitation levels, with December recording 94 mm over 15 days and November 97 mm over 14 days, humidity levels remain quite high, at 84% in December and 86% in November. For a detailed look at the weather trends, you can visit Dun Laoghaire weather in November.
As December settles over Dun Laoghaire, the weather takes a notable turn, marked by chillier temperatures and increased precipitation compared to other months. With averages hovering around 6°C (44°F), the crisp air can feel quite brisk, while the possibility of frost and the occasional dip to -2°C (28°F) remind us that winter is indeed here. Rainfall becomes a more frequent visitor, with nearly half the month graced by precipitation, leading to a rather humid atmosphere at around 84%. This time of year, with its unique blend of cold and wet, offers a different charm to Dun Laoghaire compared to the milder, drier seasons. To learn more about the characteristics of weather throughout the year, visit Dun Laoghaire Climate.