Last updated: March 17, 2025
September in Wicklow, Ireland, offers a temperate climate that invites both locals and visitors to enjoy its natural beauty. The maximum temperature reaches a pleasant 20°C (68°F), while the average daily temperature hovers around 14°C (57°F), making it ideal for outdoor activities. However, be prepared for a fair amount of precipitation, with 84 mm (3.3 in) expected over 14 days, lending to the region's lush greenery. The air is rich with humidity at 86%, creating a unique atmospheric charm typical of Irish weather. Whether exploring scenic trails or relaxing by the coast, September presents a captivating blend of mild temperatures and refreshing rain.
As September rolls into Wicklow, Ireland, temperatures begin to reflect the gentle transition from summer to autumn. With a minimum of 7°C (44°F) and a comfortable average of 14°C (57°F), the region enjoys mild days that still carry a hint of warmth. The maximum temperature reaches around 20°C (68°F), making it one of the last opportunities to bask in pleasant outdoor activities before the chill of October sets in. Compared to the preceding months, September showcases a notable decline in warmth, yet it maintains a vibrant atmosphere, inviting both locals and visitors to revel in the early autumn scenery.
September in Wicklow, Ireland, experiences a notable transition in its weather patterns, with precipitation amounting to 84 mm (3.3 in) over 14 days. This marks a slight decrease from the wetter months of August, which recorded 102 mm (4.0 in), yet remains consistent with the autumnal shift towards increased rainfall seen in the upcoming months. As the year progresses, October's expected precipitation rises to 108 mm (4.3 in), continuing the trend of wetter conditions. This steady accumulation of rain hints at the region's dynamic climate, where each month seamlessly flows into the next, preparing nature for the more substantial downpours of late autumn.
In September, Wicklow, Ireland experiences a notable humidity level of 86%, continuing the trend of high moisture that characterizes the late summer months. The humidity levels remain consistent throughout the year, hovering between 83% and 87%. As the season shifts, September’s humidity mirrors that of July and August, contributing to the lush, green landscapes for which Wicklow is famous. The slight rise in October suggests a gradual transition into the wetter autumn, yet September still retains the warmth of summer, making it a particularly vibrant time in this picturesque region.
As September rolls in, Wicklow experiences a moderate UV Index of 5, signaling a shift from the peak summer months. This reduction from August’s high rating of 7 suggests that while the sun's intensity is still notable, there's more room for outdoor adventures without the severe risk of sunburn, reflected in a burn time of 30 minutes. With the mild autumn air, it's a perfect time to enjoy the beautiful landscapes of Ireland while being mindful of sun exposure. Remember to check the updated UV levels and stay informed about safe sun habits with our guide at Wicklow UV Index.
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As summer gracefully transitions into autumn, Wicklow, Ireland, continues to bask in the warm embrace of September sunshine, garnering an impressive 308 hours of sunlight. This marks a delightful variance from the peak of summer, where the months of June, July, and August shine brightly with over 400 hours each. The gradual decline in daylight hours reveals nature’s rhythm, with September holding onto the remnants of summer warmth while preparing for the cooler days ahead. The light remains generous, serving as a reminder of the vibrant spring blooms and the lush greenery surrounding this picturesque region. As the clouds begin to drift in with autumn's arrival, this month stands as a stunning farewell to the summer sun, inviting residents and visitors alike to relish its golden glow just a little longer.
In Wicklow, Ireland, September offers a slight glimmer of sunshine but remains relatively modest in terms of clear skies, with a 24% chance of sunny weather. This is a noticeable dip from the increasing opportunities seen in spring, particularly April with its 49% chance, suggesting that while September can still present pleasant days, the transition to autumn often brings a return of overcast conditions. Comparatively, the summer months also see higher chances, with July peaking at 36%. As the year progresses into October, the likelihood continues to decline, falling to 21%, reinforcing that September is a transitional month, balancing between the warmth of summer and the chill of autumn.
As summer gradually fades, September in Wicklow, Ireland, witnesses a gentle but noticeable shift in daylight duration, enjoying about 12 hours of daylight. This month serves as a bridge between the lush brightness of summer and the approaching autumnal dusk. Following the peak of 16 hours in June and July, the daylight begins to wane, hinting at the cozy days of fall ahead. This trend mirrors the gradual transition from longer, sun-kissed days in early summer, to a more balanced light as the year moves toward its end. While September offers a delightful blend of sunny afternoons and the crispness of autumn, the shortening days remind us to savor the remaining warmth before winter's embrace.
In September, Wicklow, Ireland, experiences a gentle breeze, with an average wind speed of 4.1 m/s (9 mph), marking one of the calmest months in the annual cycle. As the summer draws to a close, the winds gradually subside from the higher speeds seen in the winter months, with January starting at 6.2 m/s (14 mph) and peaking throughout the year in October with a revival to 6.7 m/s (15 mph). This noticeable drop in wind speed from summertime to early autumn highlights a transition, inviting the serene beauty of the landscape and a moment of tranquility before the more blustery seasons return.
The weather in Wicklow 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 Wicklow and find detailed weather information for every month.
In September, Wicklow experiences a mild climate with average temperatures ranging from a minimum of 7°C (44°F) to a maximum of 20°C (68°F), alongside considerable precipitation of 84 mm (3.3 in) over about 14 days. The humidity is relatively high at 86%, making the air feel quite damp. In contrast, January brings cooler conditions, with temperatures dropping to a minimum of 0°C (33°F) and a maximum of 13°C (55°F), while the overall precipitation decreases to 71 mm (2.8 in) across 11 days. The humidity remains similar at 85%, contributing to the chilly and often overcast winter atmosphere. For more details, check out Wicklow weather in January.
September and February in Wicklow exhibit notable differences in weather patterns. September generally offers milder temperatures, with averages around 14°C (57°F) and maximums reaching 20°C (68°F), while February is cooler, featuring an average temperature of just 7°C (44°F) and highs of 13°C (56°F). Precipitation is also a factor, with September receiving 84 mm (3.3 in) over approximately 14 days, whereas February sees slightly more rain at 98 mm (3.9 in) across 16 days. Interestingly, both months share the same humidity level of 86%, contributing to a consistently damp atmosphere. For more specific insights, refer to Wicklow weather in February.
When comparing the weather in September and March, a noticeable contrast emerges in temperature and overall conditions. September enjoys a milder climate with average temperatures ranging from 7°C (44°F) at night to a comfortable 20°C (68°F) during the day. In contrast, March experiences much cooler temperatures, with lows dipping to -3°C (26°F) and highs peaking at just 12°C (54°F). Both months see a similar level of precipitation; September records 84 mm (3.3 in) over approximately 14 days, while March has slightly more at 92 mm (3.6 in) during about 15 days. Humidity levels remain consistent at 86%, making both months feel rather damp. For a detailed look at March weather specifics, visit Wicklow weather in March.
September generally offers milder weather compared to April, with average temperatures ranging from a minimum of 7°C (44°F) to a maximum of 20°C (68°F), while April sees lower temperatures that range from a minimum of 1°C (35°F) to a maximum of 15°C (59°F). Additionally, September experiences more precipitation with 84 mm (3.3 in) over 14 days, compared to April's 52 mm (2.1 in) over 11 days. Humidity levels are quite similar, with September at 86% and April slightly lower at 85%. For more detailed insights on April weather, check out Wicklow weather in April.
In comparing the weather between September and May, September tends to be slightly warmer with average temperatures ranging from 14°C (57°F) to a maximum of 20°C (68°F), while May has cooler averages with temperatures between 11°C (51°F) and a maximum of 17°C (63°F). September also experiences more precipitation, with 84 mm (3.3 in) over 14 days, compared to May's 67 mm (2.6 in) over 12 days. Interestingly, both months share similar humidity levels, with September at 86% and May at 83%. For more detailed information specific to May, you can check out Wicklow weather in May.
When comparing the weather in September and June, both months experience mild temperatures, but September tends to be slightly warmer. September sees average temperatures peaking at 14°C (57°F) with a maximum of 20°C (68°F), while June averages slightly lower with a maximum of 19°C (66°F). Precipitation levels are also comparable, with September receiving 84 mm (3.3 in) across 14 rainy days, whereas June has 76 mm (3.0 in) over 13 days. Humidity remains high in both months, at 86% in September and 85% in June, contributing to a generally damp feel during this transitional period. For more details on June weather in Wicklow, you can visit Wicklow weather in June.
In comparing the weather of September and July, both months exhibit similar maximum temperatures, reaching up to 20°C (68°F). However, September tends to have slightly cooler minimum temperatures, averaging at 7°C (44°F), compared to July's 10°C (50°F). Precipitation levels are comparable, with September receiving 84 mm (3.3 in) over 14 days and July recording 79 mm (3.1 in) across 13 days. Additionally, humidity remains consistent across both months at 86%. For more detailed information on July weather in Wicklow, you can visit Wicklow weather in July.
September brings slightly cooler weather compared to August, with average temperatures dropping from 15°C (60°F) to 14°C (57°F). The minimum temperatures also see a decrease, falling from 10°C (50°F) in August to 7°C (44°F) in September. Precipitation remains significant in both months, but September experiences a lower total of 84 mm (3.3 in) over 14 days, compared to August’s 102 mm (4.0 in) over 15 days. Humidity levels are quite similar, at 86% for September and 85% for August, creating a steamy atmosphere despite the dropping temperatures. For a detailed look at the August conditions, check out Wicklow weather in August.
September typically enjoys milder temperatures with averages around 14°C (57°F), while October sees a slight decline, averaging 12°C (53°F). The maximum temperatures in September reach 20°C (68°F), but drop to a maximum of 17°C (63°F) in October. Both months experience considerable precipitation, but October is wetter with 108 mm (4.3 in) over 16 days compared to September’s 84 mm (3.3 in) across 14 days. Humidity remains fairly consistent, slightly increasing from 86% in September to 87% in October. For more detailed insights, you can check Wicklow weather in October.
September tends to be milder than November, with average temperatures ranging from a minimum of 7°C (44°F) to a maximum of 20°C (68°F), while November sees cooler temperatures, with lows around 2°C (37°F) and highs reaching only up to 15°C (59°F). When it comes to precipitation, September receives 84 mm (3.3 in) over 14 days, whereas November is wetter, with 136 mm (5.4 in) spread across 19 days. Despite both months having a high humidity level of 86%, November's chill and increased rainfall mark a significant transition into winter. For more detailed information on November's weather, you can check Wicklow weather in November.
September weather generally offers milder temperatures, with averages around 14°C (57°F) and a maximum of 20°C (68°F), while December brings cooler conditions, featuring an average of just 7°C (46°F) and a peak of 13°C (56°F). In September, the region experiences around 84 mm (3.3 in) of precipitation over 14 days, whereas December sees increased rainfall totaling 121 mm (4.8 in) across 15 days. Humidity levels remain fairly high in both months, but September is slightly more humid at 86%, compared to December's 84%. For more detailed insights into December's weather patterns, check out Wicklow weather in December.
As September rolls into Wicklow, the weather begins to transition from the warmth of summer, bringing a delightful mix of mild temperatures and increased precipitation. With average temperatures dipping slightly, this month marks a shift, offering refreshing coolness in the air, especially in the mornings and evenings. The humidity rises, and rainfall becomes more frequent, painting a vivid picture of the lush landscapes that Wicklow is known for. Compared to the sunnier months, September exudes a distinct charm, inviting nature lovers to experience the beauty of the Irish countryside while embracing the crispness of early autumn. For a deeper dive into what the climate has to offer throughout the year, visit Wicklow Climate.