Last updated: March 17, 2025
September in Dundrum, Ireland brings a blend of mild temperatures and refreshing rainfall, making it a unique time to experience the charm of this coastal village. With a maximum temperature reaching 22°C (72°F) and an average of 13°C (56°F), the month offers comfortable days that encourage outdoor exploration. However, as autumn approaches, evenings cool down to a minimum of 3°C (38°F), emphasizing the transition of seasons. Rainfall is frequent, with nearly 73 mm (2.9 in) occurring over 14 days, contributing to the lush landscape and high humidity levels averaging at 86%. Visitors can expect a refreshing, albeit damp, experience, perfect for enjoying the scenic beauty of Dundrum.
As September arrives in Dundrum, Ireland, the temperatures begin to reflect the transition from summer to autumn. With minimums around 3°C (38°F) and averages settling at 13°C (56°F), there’s a noticeable dip compared to the warmer months of July and August, yet the maximums can still reach a pleasant 22°C (72°F). This marks a shift from the balmy heights of summer, inviting a crispness in the air that hints at the changing season. As the leaves start to turn, September offers a perfect blend of mild days and cool evenings, making it an ideal time for outdoor activities and enjoying the scenic beauty of the Irish landscape.
In September, Dundrum, Ireland, experiences a notable shift in its weather patterns, receiving an average of 73 mm (2.9 in) of precipitation over 14 days. This amount reflects a slight decrease compared to the wetter months of August and November, which see 95 mm (3.8 in) and 97 mm (3.8 in) respectively. However, September's precipitation is still substantial, contributing to the vibrant greenery that characterizes the region. This month marks a transition, as summer yields to autumn; while the days are often punctuated by rain, the overall amount remains typical for early fall, setting the stage for the increasing rain of the coming months. The consistent patterns of rainfall throughout the summer, peaking in August, provide a rich backdrop for the cooler September days, making it a beautiful, though occasionally soggy, time of year.
In Dundrum, Ireland, September experiences a notable humidity level of 86%, aligning with the peak summer months. This consistent figure showcases a trend where the humidity hovers around the mid-80s throughout the year, with only slight fluctuations. Notably, while January and October see slightly higher levels at 85% and 87% respectively, the overall range remains remarkably stable, indicating a typically moist climate. The months of July and August maintain the year's highest humidity, creating a backdrop of lush, verdant landscapes that linger into early autumn. As September transitions into the cooler October air, the steady humidity serves to emphasize the immersive, green charm that defines Dundrum's natural beauty.
As September rolls in Dundrum, Ireland, sun-seekers can expect a moderate UV Index of 5, comparable to the earlier months of spring. This signals a shift from the high levels experienced during the peak summer months of June and July, where precautions were essential due to the very high ratings of 8. With a burn time of approximately 30 minutes, it's important to stay mindful of sun exposure, especially as the days gradually shorten. As autumn approaches, the UV Index begins to decline, indicating a more forgiving sun while retaining enough strength to warrant caution. For those planning outdoor activities, staying informed is key—check the latest updates at Dundrum UV Index to ensure a safe and enjoyable experience.
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As summer transitions into autumn, September in Dundrum, Ireland, boasts a commendable 294 hours of sunshine, marking a delightful end to the sunnier months. This month follows the vibrant peak of May with 391 hours and June and July, both sharing 385 hours of glorious sunlight. While September experiences a notable decrease in sun exposure compared to the bustling summer, it still holds its ground above the more subdued winter months, including October with 230 hours and November with only 120 hours. As the golden hues of autumn encroach, September offers a warm farewell to summer, nurturing the same spirit of vibrant outdoor enjoyment.
In Dundrum, Ireland, the likelihood of sunny weather in September stands at a modest 20%, reflecting a slight decline in sunshine compared to the vibrant spring months. This month, typically nestled at the cusp of autumn, offers less sunshine than the peak of spring, where April boasts a lively 44% chance of sunny days. As the summer transitions to fall, we see June through August maintaining a modest range of 23% to 30%, but by September, the chance for clear skies dwindles. Interestingly, the pattern continues downward into October, suggesting that those hoping for sunshine should seize the fleeting days of September before the colder months bring even less bright weather.
As the summer warmth begins to fade, September in Dundrum, Ireland, experiences a gentle transition with daylight lasting approximately 12 hours. This month marks a noticeable shift from the long, sun-drenched days of July and August, which both boast up to 16 hours of daylight. The gradual decline signals the approach of autumn, where daylight quickly dwindles, falling to 10 hours in October and further down to 8 hours by November. September’s light, while still plentiful, hints at the cozy, shorter days ahead, inviting residents and visitors alike to savor the beauty of early fall in Ireland.
As September approaches in Dundrum, Ireland, the breezy summer days begin to wane, bringing with them an average wind speed of 3.4 m/s (8 mph). This modest gust mirrors the calmer conditions of July and August, where winds were similarly gentle. Notably, this trend marks a significant reduction from earlier months like February, which boasted a brisk 6.0 m/s (13 mph). Moving into autumn, the winds start to pick up again in October, with an increase to 4.9 m/s (11 mph), suggesting a seasonal shift as the landscape prepares for the chillier months ahead. This subtle ebb and flow of wind speeds paints a portrait of Dundrum’s transitional weather, where gentle breezes contribute to the picturesque charm of late summer settling into autumn.
The weather in Dundrum changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of September's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Dundrum and find detailed weather information for every month.
September weather in Dundrum is characterized by milder temperatures, with average highs reaching up to 22°C (72°F) and a relatively high humidity level of 86%. The month typically sees around 73 mm (2.9 in) of precipitation spread over 14 days. In contrast, January brings colder conditions, with average temperatures ranging from a minimum of -3°C (26°F) to a maximum of 13°C (56°F). Despite being drier, January still experiences about 57 mm (2.2 in) of precipitation over 10 days, accompanied by a slightly lower humidity level of 85%. For a more detailed look at January weather, you can visit Dundrum weather in January.
September and February present contrasting weather patterns, with September generally being warmer and milder. In September, temperatures range from a minimum of 3°C (38°F) to a maximum of 22°C (72°F), averaging around 13°C (56°F), while February sees colder conditions with temperatures dipping between -2°C (29°F) and 14°C (58°F), averaging at 6°C (43°F). Both months experience similar levels of precipitation, with September receiving 73 mm (2.9 in) and February slightly higher at 80 mm (3.1 in), each with rain on about 14 days. Notably, humidity remains constant at 86% in both months, contributing to a similar feel despite the temperature differences. For more details on February weather, you can check Dundrum weather in February.
September and March present contrasting weather conditions, although both months maintain similar humidity levels of 86%. In September, temperatures range from a mild 3°C (38°F) to a pleasant high of 22°C (72°F), with an average of 13°C (56°F). In contrast, March features cooler temperatures, with a minimum of -5°C (24°F) and a maximum of 16°C (61°F), averaging only 7°C (44°F). Additionally, precipitation is slightly higher in March at 81 mm (3.2 in), falling over 15 days, compared to September's 73 mm (2.9 in) over 14 days. For more detailed insights, check out Dundrum weather in March.
In comparing the weather of September and April, September generally presents milder and warmer conditions. With average temperatures ranging from a minimum of 3°C (38°F) to a maximum of 22°C (72°F), September tends to be more comfortable than April, which has temperatures dropping as low as -2°C (29°F) and peaking at 19°C (66°F). Additionally, September experiences a higher average precipitation of 73 mm (2.9 in) over 14 days, compared to April's 52 mm (2.0 in) over 11 days. Despite these nuances, both months have relatively high humidity levels, with September at 86% and April at 85%. For more detailed insights into April's weather, you can visit Dundrum weather in April.
September and May exhibit similar weather patterns, though each month carries its own distinct characteristics. In September, the temperatures range from a minimum of 3°C (38°F) to a maximum of 22°C (72°F), with an average of 13°C (56°F). May, on the other hand, tends to be slightly cooler, with temperatures ranging from 0°C (32°F) to 21°C (71°F) and an average of 11°C (52°F). Both months experience comparable levels of precipitation, with September seeing 73 mm (2.9 in) and May slightly less at 72 mm (2.8 in), each having around 14 days of rainfall. Interestingly, September has a marginally higher humidity level at 86%, compared to May's 83%. To explore more about the weather in May, check out Dundrum weather in May.
In comparing the weather between September and June, we see some notable differences. September features a cooler temperature range, with minimums dropping to 3°C (38°F) and a maximum of 22°C (72°F), while June offers slightly warmer temperatures from a minimum of 6°C (42°F) to a maximum of 24°C (75°F). Both months experience similar levels of precipitation, with September receiving 73 mm (2.9 in) over about 14 days, and June recording 75 mm (3.0 in) over 15 days. Humidity levels are also comparable, sitting at 86% for September and 85% for June. For a more detailed look at June weather specifics, check out Dundrum weather in June.
When comparing the weather in September and July, September tends to be cooler overall, with minimum temperatures dropping to 3°C (38°F) and average highs of 22°C (72°F). In contrast, July enjoys a warmer climate, featuring minimum temperatures around 8°C (46°F) and average highs reaching up to 25°C (77°F). Both months experience similar levels of precipitation, with September recording 73 mm (2.9 in) and July slightly higher at 80 mm (3.2 in), but both have rainfall on approximately 14 days. Interestingly, the humidity remains consistent at 86% for both months, contributing to a persistent sense of dampness in the air. For more specifics on July, you can check Dundrum weather in July.
In September, the weather sees a notable drop in minimum temperatures, with lows around 3°C (38°F) compared to August's 7°C (45°F). The average temperature also cools slightly from 15°C (60°F) in August to 13°C (56°F) in September, while the maximums remain fairly similar at 22°C (72°F) in September and 23°C (73°F) in August. Precipitation increases in September to 73 mm (2.9 in) over 14 days, although it's slightly less than August’s 95 mm (3.8 in), which spread over 16 days. Humidity levels remain comparable, with September at 86% and August at 85%. For more detailed insights on August weather, you can refer to the link: Dundrum weather in August.
September tends to be slightly warmer than October, with average temperatures ranging from a minimum of 3°C (38°F) to a maximum of 22°C (72°F), whereas October sees a drop in temperatures with a minimum of 1°C (35°F) and a maximum of 18°C (65°F). Both months experience similar precipitation levels, with September receiving 73 mm (2.9 in) and October slightly higher at 87 mm (3.4 in), and both months seeing rain on about 14 days. Humidity remains fairly constant, with September at 86% and October at 87%. For a more detailed look at October weather, you can check Dundrum weather in October.
September and November present distinct weather contrasts. In September, temperatures range from a minimum of 3°C (38°F) to a maximum of 22°C (72°F), with an average of 13°C (56°F). The month sees around 73 mm (2.9 in) of precipitation over 14 days, while humidity remains relatively high at 86%. In contrast, November experiences cooler temperatures, with lows dropping to 0°C (32°F) and a maximum of 15°C (59°F), yielding an average of only 8°C (46°F). Rainfall increases to 97 mm (3.8 in) over the same number of days, yet humidity remains constant at 86%. Overall, November brings a chillier atmosphere and slightly more precipitation compared to September. For a closer look at November's weather, check out Dundrum weather in November.
September and December offer contrasting weather patterns. In September, temperatures range from a mild 3°C (38°F) to a comfortable 22°C (72°F), with an average of 13°C (56°F), making it a pleasant month. Rainfall is moderate, with 73 mm (2.9 in) over 14 days, accompanied by high humidity at 86%.
In contrast, December sees a drop in temperatures, with lows reaching -2°C (28°F) and a maximum of 13°C (56°F), resulting in an average temperature of just 6°C (44°F). The month is wetter, accumulating 94 mm (3.7 in) of precipitation across 15 days, while humidity remains slightly lower at 84%. For more detailed insights, you can check Dundrum weather in December.
As September arrives in Dundrum, the weather begins to shift towards cooler days, contrasting sharply with the warmer summer months. Temperatures typically range from pleasant highs to brisk lows, creating a refreshing atmosphere, yet the lingering humidity at 86% often makes it feel even cooler. With an average of 14 days of rainfall contributing to a total precipitation of 73 mm, this month marks a notable increase in wet days compared to the dry spells of summer. Such conditions pave the way for the stunning autumnal colors that begin to emerge, emphasizing the transition from summer’s warmth to the invigorating crispness of fall. For a more comprehensive look at the changing seasons, visit Dundrum Climate.