Last updated: March 17, 2025
In January, Dun Laoghaire experiences a chilly climate characterized by a maximum temperature of 13°C (56°F) and an average of 5°C (42°F), dipping to a minimum of -3°C (26°F). This month is marked by frequent precipitation, totaling around 57 mm (2.2 in) over approximately 10 days, leading to a rather humid atmosphere with levels reaching 85%. Whether you're braving the winter winds or enjoying the picturesque coastal views, this month in Dun Laoghaire offers a unique charm amidst its crisp conditions.
In Dun Laoghaire, Ireland, January temperatures reflect the chill of winter, with lows dipping to -3°C (26°F) and an average hovering around 5°C (42°F). The maximum can reach a mild 13°C (56°F), hinting at the gradual shift towards spring. The month often starts off frigid, evident from the sub-zero temperatures we see, but as January progresses, a gentle warming trend emerges, paving the way for February’s slightly warmer averages. Notably, temperatures continue to rise as spring approaches, with each month showcasing not just an increase in averages but also more comfortable highs, setting the stage for the delightful warmth of summer.
In Dun Laoghaire, Ireland, January ushers in the year with a modest 57 mm (2.2 in) of precipitation, falling over approximately 10 days. This sets a relatively low stage compared to the wetter months that follow, particularly February and March, which see a notable increase in rainfall, reaching 80 mm (3.1 in) and 81 mm (3.2 in) respectively. As spring approaches, the precipitation amounts fluctuate, but overall, the dampness persists with a peak in November, where 97 mm (3.8 in) is recorded, coinciding with a consistent pattern of 14 days of rainfall throughout the fall and winter months. Interestingly, the data reveals that while January may be less drenched compared to later months, its role as a precursor to the wetter seasons can’t be understated, illustrating the gradual transition from the brisk winter into the lush, rainy spring.
In January, Dun Laoghaire experiences a humidity level of 85%, setting the tone for a consistently moist winter. This trend continues into February and March, where humidity remains steady at 86%, creating a damp atmosphere typical of the season. As spring approaches in April, humidity dips slightly back to 85%, maintaining a similar comfortable feel. However, the summer months see a return to higher humidity, peaking again in July and September at 86%. Notably, the annual average levels fluctuate minimally, with the highest humidity recorded in October at 87%. Throughout the year, Dun Laoghaire maintains a relatively high humidity range, particularly during the late fall and early winter, which contributes to its lush, green landscapes and vibrant coastal scenery.
In Dun Laoghaire, Ireland, the UV Index in January stands at a low level of 1, allowing for a safe 45-minute burn time for those venturing outdoors. As the months progress into February, the UV Index remains at 2, signaling another month of low exposure and consistent burn time. However, as spring unfurls, the UV Index begins to rise noticeably, reaching 4 in March and then escalating to 5 in April. This trend hints at a shift towards moderate exposure times, where the burn time reduces to 30 minutes. As the sun strengthens through May and June, the Index peaks at 7 and 8, both classified as high to very high exposures. This seasonal increase highlights a significant change, shrinking the burn time to just 15 minutes in the summer months. By late summer and into autumn, the exposure levels taper off, falling back to moderate and low categories in September through December, with burn times extending to 30-45 minutes once again. This cycling pattern emphasizes the importance of adapting sun protection strategies throughout the year. For more detailed information, visit Dun Laoghaire UV Index.
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In the coastal town of Dun Laoghaire, January welcomes the year with a modest 83 hours of sunshine, setting the stage for a gradual increase in brightness as the months unfold. By February, residents can bask in an additional 64 hours, hinting at spring’s approach. The sun continues to shine more generously in March and April, with sunlight hours surging to 191 and 311 respectively, heralding the bloom of longer days. May peaks at a delightful 391 hours, marking the transition into the summer months. June and July maintain this sunny disposition, offering 385 hours each, while August begins a slow descent as daylight retreats to 339 hours. As autumn arrives, September shows a gentle decline to 294 hours, further dwindling through October and November, with just 120 hours by month’s end. Finally, December wraps up the year with a mere 95 hours, leaving Dun Laoghaire cloaked in winter’s embrace, eagerly awaiting the return of sunshine in the new year.
In Dun Laoghaire, Ireland, the likelihood of experiencing sunny weather in January stands at a modest 23%, which is relatively higher compared to the gloomy winter months that follow. Trends show that while January sees a reasonable chance of sun, subsequent months like February (21%) and March (22%) reveal a slight decline in sunny days. However, there’s a noticeable boost in brightness by April, where the chances leap to 44%. This pattern indicates a clear transitional phase into spring, suggesting that the longer days of April and beyond hold promise for those seeking the sun. As we move towards summer, May (31%) and July (30%) maintain a decent probability of sunny weather, before it slightly tapers off again in late summer. Thus, if you're planning a January visit, don’t be discouraged by the uncertain forecast; your chances for sunshine are better than many of the months that follow!
In Dun Laoghaire, Ireland, January brings 8 hours of daylight, a modest start to the year that reflects the lingering darkness of winter. However, as the month shifts to February, a gradual increase to 9 hours beckons the promise of spring. This upward trend continues through March, when daylight extends to 11 hours, and really picks up in April, offering 14 hours of light as the days grow warmer. May and June peak at 15 and 16 hours, respectively, creating the sunniest months of the year. This abundance of daylight begins to wane in the late summer months, with August still enjoying 14 hours, while September sees a gentle descent to 12 hours. By October, daylight dips to 10 hours, and as winter approaches, the cycle completes with November and December plunging to 8 and 7 hours of light, reinforcing the rhythm of seasonal change in this idyllic coastal town. The journey from the depths of winter to the height of summer paints a vivid portrait of nature's cyclic beauty.
In Dun Laoghaire, Ireland, January serves as a gentle herald of the wind patterns that define the coastal atmosphere. With an average wind speed of 4.5 m/s (10 mph), this month tends to be calmer than February, which sees a noticeable uptick to 6.0 m/s (13 mph). Following this peak, the winds begin to settle into a more moderate rhythm, fluctuating between 4.0 m/s (9 mph) and 3.4 m/s (8 mph) in the spring and summer months before dipping to the calmest levels of 2.7 m/s (6 mph) in July. As autumn approaches, the winds gradually strengthen again, reaching 4.9 m/s (11 mph) by December, but January’s breezes still maintain a serene character, making it a perfect time for quiet winter strolls along the picturesque waterfront.
The weather in Dun Laoghaire changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of January'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.
January and February exhibit similar cold weather patterns, but there are notable differences. January sees average temperatures ranging from a chilly -3°C (26°F) to a milder 13°C (56°F), while February offers slightly warmer averages, with temperatures fluctuating between -2°C (29°F) and 14°C (58°F). In terms of precipitation, February is wetter, accumulating 80 mm (3.1 in) over 14 days, compared to January's 57 mm (2.2 in) across 10 days. The humidity remains high in both months, with February averaging 86%, just above January's 85%. For a detailed look at February's weather in Dun Laoghaire, you can refer to Dun Laoghaire weather in February.
In comparing the weather of January and March, we can observe some notable differences. January typically presents a cooler climate with average temperatures around 5°C (42°F), whereas March experiences a slight warming trend, with averages reaching 7°C (44°F). While both months have their share of precipitation, January sees about 57 mm (2.2 in) over 10 days, while March has increased rainfall at 81 mm (3.2 in) across 15 days. Additionally, January's humidity is around 85%, slightly lower than March's 86%, suggesting a similar level of dampness, but with a more pronounced presence of rain in March. For more detailed insights on weather conditions, you can check this link: Dun Laoghaire weather in March.
When comparing the weather in January and April, a noticeable shift in temperatures and conditions can be observed. In January, the average temperature hovers around 5°C (42°F), with a range from a chilly -3°C (26°F) to a mild 13°C (56°F). It experiences 57 mm (2.2 inches) of precipitation over 10 days, contributing to higher humidity levels of 85%. In contrast, April sees a modest increase in average temperature to 8°C (47°F), with minimums of -2°C (29°F) and maximums rising to 19°C (66°F). Precipitation is slightly lower at 52 mm (2.0 inches) over 11 days, while the humidity remains constant at 85%. For a closer look at April's weather patterns, visit Dun Laoghaire weather in April.
In January, the weather is quite chilly, with temperatures ranging from a minimum of -3°C (26°F) to a maximum of 13°C (56°F), and an average temperature of 5°C (42°F). The month experiences moderate precipitation, totaling 57 mm (2.2 in) over about 10 days, accompanied by high humidity levels of 85%.
In contrast, May sees a significant rise in temperatures, with averages reaching 11°C (52°F) and maximums up to 21°C (71°F). However, it also experiences increased precipitation, accumulating 72 mm (2.8 in) over 14 days, while humidity remains relatively stable at 83%. For a more detailed look at May weather, you can visit Dun Laoghaire weather in May.
In January, the weather is characterized by cold temperatures, ranging from a minimum of -3°C (26°F) to a maximum of 13°C (56°F), with an average of 5°C (42°F). The month sees about 57 mm (2.2 in) of precipitation over approximately 10 days, accompanied by high humidity levels of 85%. In contrast, June experiences milder temperatures with a minimum of 6°C (42°F), an average of 14°C (57°F), and a maximum of 24°C (75°F). Precipitation increases to 75 mm (3.0 in) over 15 days while maintaining the same humidity of 85%. Overall, June offers a more temperate climate compared to the chill of January. For more details, visit Dun Laoghaire weather in June.
In January, the weather is notably colder, with temperatures ranging from a chilly -3°C (26°F) to a mild 13°C (56°F) and an average of 5°C (42°F). The month experiences around 57 mm (2.2 in) of precipitation over approximately 10 days, while the humidity remains high at 85%. In contrast, July boasts a much warmer climate, with temperatures varying from a minimum of 8°C (46°F) to a pleasant maximum of 25°C (77°F) and an average of 16°C (60°F). Rainfall increases slightly to 80 mm (3.2 in) spread over 14 days, accompanied by a similar humidity level of 86%. For a closer look at the weather specifics during this summer month, check out the details in Dun Laoghaire weather in July.
When comparing the weather in January and August, it's clear that August is significantly milder. January temperatures range from a chilly minimum of -3°C (26°F) to an average of 5°C (42°F) and a maximum of 13°C (56°F), while August presents a much warmer range with minimums of 7°C (45°F), average of 15°C (60°F), and maximums reaching up to 23°C (73°F). Additionally, precipitation is more frequent in August, with rainfall occurring on 16 days and totaling 95 mm (3.8 in), compared to January’s 57 mm (2.2 in) over 10 days. Both months share a high humidity level of 85%, but the overall experience is much harsher in January. For more detailed insights, you can check out Dun Laoghaire weather in August.
When comparing the weather in January and September, notable differences emerge. January begins the year with chilly temperatures, featuring a minimum of -3°C (26°F) and an average of 5°C (42°F), while September offers a much milder climate, with minimum temperatures around 3°C (38°F) and an average of 13°C (56°F). Precipitation is slightly higher in September, totaling 73 mm (2.9 in) over 14 days compared to January’s 57 mm (2.2 in) over 10 days. Humidity levels are also comparable, sitting at around 85% for January and slightly higher at 86% in September. To learn more about the specifics of September weather, you can visit Dun Laoghaire weather in September.
January and October present distinct weather patterns. In January, temperatures range from a chilly minimum of -3°C (26°F) to a maximum of 13°C (56°F), with an average of 5°C (42°F). This month experiences 57 mm (2.2 in) of precipitation over about 10 days, accompanied by high humidity at 85%. In contrast, October offers milder temperatures with a minimum of 1°C (35°F) and a maximum of 18°C (65°F), averaging 11°C (51°F). The month is wetter, boasting 87 mm (3.4 in) of precipitation across approximately 14 days, and slightly higher humidity at 87%. For more insights on October weather, you can visit Dun Laoghaire weather in October.
January and November exhibit distinct weather characteristics, with January being notably colder. In January, temperatures range from a minimum of -3°C (26°F) to a maximum of 13°C (56°F), while November sees slightly milder conditions, with temperatures ranging from 0°C (32°F) to 15°C (59°F). Precipitation is more prevalent in November, totaling 97 mm (3.8 in) over 14 days, compared to January's 57 mm (2.2 in) over 10 days. Humidity levels are similar, hovering around 85% in January and 86% in November. For more details on November weather patterns, visit Dun Laoghaire weather in November.
In comparing the weather between January and December, both months exhibit similar temperature ranges with average highs reaching 13°C (56°F) and lows around -3°C (26°F) in January and -2°C (28°F) in December. However, January tends to be slightly drier, with 57 mm (2.2 in) of precipitation over about 10 days, compared to December's 94 mm (3.7 in) of rain across 15 days. Humidity levels remain relatively high in both months, with January at 85% and December at 84%. For more detailed information, you can check out Dun Laoghaire weather in December.
As January settles over Dun Laoghaire, the weather takes on a distinctly chillier demeanor compared to other months of the year. With temperatures averaging only 5°C (42°F) and dipping as low as -3°C (26°F), this month ushers in a stark contrast to the milder climes that follow. The 85% humidity adds a layer of dampness to the air, making it feel cooler and more biting. While 57 mm of precipitation over 10 days contributes to the often gray skies, winter's embrace invites a cozy charm to the coastal town. For those interested in the broader patterns of weather throughout the year, a closer look can be found at Dun Laoghaire Climate.