Last updated: March 17, 2025
In October, Dun Laoghaire, Ireland experiences a blend of crisp air and occasional rainfall, making it a month of contrast. With maximum temperatures reaching 18°C (65°F) and an average of 11°C (51°F), the weather can shift from pleasant afternoons to brisk evenings. The minimum temperature can plummet to 1°C (35°F), reminding residents and visitors to layer up. This month also sees about 87 mm (3.4 in) of precipitation spread over 14 days, contributing to a notable humidity level of 87%. Whether you're navigating the seaside or exploring the town, be prepared for the enchanting, yet unpredictable Irish autumn weather.
As October settles in Dun Laoghaire, the temperature begins to reflect the crispness of autumn, with minimums dropping to about 1°C (35°F), while the average lingers around a mild 11°C (51°F). This month marks a transition, where the highs reach a comfortable 18°C (65°F), just enough to enjoy the picturesque coastal views before winter's chill takes hold. Compared to the preceding months, October sees a perceptible cooling trend, moving away from the warmer September days which averaged 13°C (56°F). As the leaves turn and the days shorten, Dun Laoghaire invites visitors to embrace the beauty of fall, where each layer of clothing becomes an integral part of the scenic strolls along its iconic promenade.
In October, Dun Laoghaire experiences a notable spike in precipitation, with an average of 87 mm (3.4 in) spread over 14 days. This marks a transition into the wetter months, as rainfall increases, reflecting a pattern seen in previous years as autumn deepens. The overall trend shows a rise in both the amount and frequency of rainfall from the summer months, where the average for August hit its peak with 95 mm (3.8 in), followed closely by October. This cumulative effect highlights how the latter part of the year is characterized by damp and brisk weather, setting the stage for winter's chill. As such, October serves as a pivotal month, embodying the shift towards more consistent rainfall in Dun Laoghaire.
In October, Dun Laoghaire experiences its highest humidity of the year at 87%, marking a notable increase from the preceding months. This slight uptick aligns with the trend observed from September, which also maintained a high humidity level of 86%. Throughout the year, humidity levels in Dun Laoghaire tend to hover around the mid-80s, with the most humid months consistently being late summer and early autumn. The gradual rise to October underscores the region's transitional climate, where the fading warmth of summer gives way to the dampness of autumn, creating a characteristic chill in the air as the month progresses.
As October arrives in Dun Laoghaire, the UV Index settles at a moderate level of 3, indicating a small increase in sun intensity compared to the previous months. After the high and very high levels experienced during the summer months, this drop to a 30-minute burn time provides a more manageable exposure threshold. With the onset of autumn, residents and visitors can enjoy the crisp outdoors while remaining mindful of sun safety, although the need for sunscreen is reduced as the sun's rays become less intense. This trend reflects a gentle transition from the vibrant summer sun to the cooler, shorter days of winter. For more detailed insights, check the Dun Laoghaire UV Index.
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As October unfolds in Dun Laoghaire, the charm of autumn is embraced with a delightful 230 hours of sunshine, making it a notably brighter month compared to the winter ahead, with November and December dipping to just 120 and 95 hours respectively. This month sits comfortably between the vibrant summer months of June and July, both enjoying a peak of 385 hours, and the gentle transition into the cooler days of fall. The gradual decrease in daylight reveals a trend of diminishing hours as the year progresses, yet October still celebrates a commendable sunlit ambiance that invites residents and visitors alike to enjoy the stunning coastal views and scenic strolls amidst the changing leaves.
As we delve into the likelihood of sunny weather in Dun Laoghaire, Ireland, October presents a notable dip, with only a 19% chance of sunshine. This trend mirrors the decline in daylight and warmth characteristic of autumn, following a slight uptick in sunny days during April's spring bloom at 44%. While summer months like June and July show a modest 24% and 30% probability respectively, the cloudy days tend to return in September and persist into October. The steady reduction from the vibrant colors of summer to the cooler, darker days of fall highlights a shift in the weather pattern, making the prospect of sun during this month seem increasingly elusive.
As autumn settles in Dun Laoghaire, October brings a gentle reduction in daylight, with approximately 10 hours of sunlight gracing the skies. This follows the gradual decline from the long, sunlit days of summer, where July peaked at 16 hours. The transition is evident as the vibrant colors of October foliage contrast against the shorter days, swinging back from the 12 hours enjoyed in September. With daylight now gently waning towards winter, the rhythm of the seasons continues to unfold, reminding us of nature's beautiful cycles. As the year progresses, November will bring further dimming, returning to the familiar 8-hour daylight patterns we see in January.
As October rolls into Dun Laoghaire, the winds begin to whisper their way back into the coastal air, showcasing an average wind speed of 4.9 m/s (11 mph). This marks a notable rise from the lighter July and August breezes, where winds were gentle at 2.7 m/s (6 mph) and 3.6 m/s (8 mph), respectively. Throughout the year, we see a dynamic shift in wind patterns, peaking in October and matching the higher levels of November and December. The revitalized gusts bring a sense of energy to the seaside town, as the once calm summer air gives way to the crisp winds of autumn, inviting both locals and visitors to embrace the season's changing spirit.
The weather in Dun Laoghaire changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of October'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.
October and January present distinctly different weather patterns. October offers milder temperatures, with daily averages around 11°C (51°F) and highs reaching up to 18°C (65°F), while January temperatures are significantly lower, with a typical average of 5°C (42°F) and maximums of 13°C (56°F). Additionally, October experiences more rainfall, totaling 87 mm (3.4 in) over approximately 14 days, compared to January's 57 mm (2.2 in) across about 10 days. Humidity levels remain fairly consistent, hovering around 87% in October and slightly lower at 85% in January. For more detailed insights on January weather, visit Dun Laoghaire weather in January.
October and February both exhibit cool weather patterns, but with distinct differences in temperature and conditions. In October, temperatures range from a chilly 1°C (35°F) to a mild 18°C (65°F), accompanied by an average of 11°C (51°F). The month sees a total precipitation of 87 mm (3.4 in) spread across 14 days, with humidity hovering at 87%.
In contrast, February experiences slightly lower temperatures, with a minimum of -2°C (29°F) and a maximum of 14°C (58°F), yielding an average of 6°C (43°F). Precipitation in February is slightly less, totaling 80 mm (3.1 in) also over 14 days, and humidity remains comparable at 86%. For a closer look at February weather patterns, visit Dun Laoghaire weather in February.
In comparing the weather between October and March, October is generally milder with average temperatures ranging from 1°C to 18°C (35°F to 65°F), while March experiences cooler conditions with temperatures from -5°C to 16°C (24°F to 61°F). Although October has slightly more precipitation at 87 mm (3.4 in) over 14 days compared to March's 81 mm (3.2 in) spread over 15 days, both months feature similar humidity levels, hovering around 86% to 87%. For those interested in detailed information about March weather, you can check out Dun Laoghaire weather in March.
When comparing the weather in October to that of April, notable differences emerge. In October, temperatures range from a minimum of 1°C (35°F) to a maximum of 18°C (65°F), with an average of 11°C (51°F). The month boasts higher precipitation, recording 87 mm (3.4 in) over 14 days, and a humidity level of 87%. In contrast, April experiences slightly cooler temperatures, with a minimum of -2°C (29°F) and an average of 8°C (47°F). However, it reaches a similar maximum of 19°C (66°F). Precipitation is lower in April at 52 mm (2.0 in), spread across 11 days, and humidity stands at 85%. For more detailed information, you can check the Dun Laoghaire weather in April.
In comparing the weather between October and May, we see notable differences in temperature and precipitation patterns. October features cooler temperatures with a minimum of 1°C (35°F) and a maximum of 18°C (65°F), while May offers slightly milder conditions, with temperatures ranging from 0°C (32°F) to 21°C (71°F). Precipitation is higher in October at 87 mm (3.4 in) compared to May's 72 mm (2.8 in), although both months see rainfall on approximately 14 days. Humidity levels are slightly higher in October at 87%, whereas May experiences a humidity of 83%. For a closer look at the specific weather conditions in May, you can check out Dun Laoghaire weather in May.
When comparing the weather in October and June, notable differences emerge. October typically experiences cooler temperatures with a minimum of 1°C (35°F) and a maximum of 18°C (65°F), making it distinctly chillier than June, which offers a more moderate climate, with temperatures ranging from a minimum of 6°C (42°F) to a maximum of 24°C (75°F). Additionally, October has higher precipitation levels at 87 mm (3.4 in) over 14 days, whereas June sees slightly less rain at 75 mm (3.0 in) across 15 days. Humidity is similar in both months, with October recorded at 87% and June at 85%, providing a damp atmosphere in both cases. For those interested in a more detailed look at the June climate, you can check out Dun Laoghaire weather in June.
In comparing the weather between October and July, a noticeable contrast emerges. October features cooler temperatures, with a minimum of 1°C (35°F) and an average of 11°C (51°F), while July enjoys milder conditions, with temperatures ranging from a minimum of 8°C (46°F) to a maximum of 25°C (77°F). Both months experience similar precipitation levels, with October receiving 87 mm (3.4 in) and July slightly lower at 80 mm (3.2 in), along with approximately 14 rainy days in each month. However, October's humidity is a touch higher at 87%, compared to July's 86%, contributing to the chillier feel as summer transitions to autumn. For a closer look at July's weather specifics, you can visit Dun Laoghaire weather in July.
In comparison to August, October experiences notably cooler temperatures, with average highs of 18°C (65°F) compared to August’s warmer average high of 23°C (73°F). The minimum temperatures in October drop to around 1°C (35°F), significantly lower than August's minimum of 7°C (45°F). Both months see considerable precipitation, with October receiving 87 mm (3.4 in) over 14 days and August slightly higher at 95 mm (3.8 in) over 16 days. Despite similar humidity levels, October's 87% outshines August's 85%, giving October a much more damp and chilly feel. For more detailed information on August weather, you can visit Dun Laoghaire weather in August.
October generally brings cooler temperatures compared to September, with minimums dropping from 3°C (38°F) in September to 1°C (35°F) in October. The average temperature also decreases, moving from 13°C (56°F) in September to 11°C (51°F) in October, while the maximum temperature sees a more significant decline from 22°C (72°F) to 18°C (65°F). Additionally, October experiences slightly more precipitation at 87 mm (3.4 in) compared to 73 mm (2.9 in) in September, despite both months having 14 rainy days. The humidity remains fairly consistent between the two months, with October at 87% and September at 86%. For more detailed insights, you can check the Dun Laoghaire weather in September.
As October transitions into November, temperatures begin to cool slightly, with October averaging 11°C (51°F) compared to November's 8°C (46°F). The minimum temperatures in October are 1°C (35°F), while November sees a drop to a chilly 0°C (32°F). Precipitation increases slightly from 87 mm (3.4 in) in October to 97 mm (3.8 in) in November, although the number of rainy days remains the same at 14. Overall, both months experience high humidity levels, with October at 87% and November slightly lower at 86%. For a more detailed look at November's weather, check out Dun Laoghaire weather in November.
In October, the weather tends to be milder with temperatures ranging from a low of 1°C (35°F) to a high of 18°C (65°F), averaging around 11°C (51°F). However, it is also quite wet, with 87 mm (3.4 in) of precipitation over about 14 days and humidity levels at 87%. In contrast, December brings colder conditions, with temperatures dipping to a minimum of -2°C (28°F) and reaching a maximum of 13°C (56°F), averaging around 6°C (44°F). Rainfall increases slightly to 94 mm (3.7 in) across 15 days, and humidity remains relatively high at 84%. For more detailed insights, visit Dun Laoghaire weather in December.
As October rolls into Dun Laoghaire, the weather takes a notable turn, presenting a blend of mild temperatures and increased precipitation that distinguishes it from the preceding months. With averages hovering around 11°C, the days feel crisper, while the evenings chill down, reminding us that winter is on the horizon. This month experiences more rainy days, contributing to a higher humidity level that gives the air a refreshing, albeit damp, quality. So, whether you're enjoying a leisurely stroll along the coast or cozying up indoors, October offers a unique and captivating atmosphere. For a more detailed understanding of what to expect throughout the year, check out the Dun Laoghaire Climate.