Last updated: March 17, 2025
September in Blarney, Ireland presents a delightful yet varied climate, where daytime temperatures can soar to a maximum of 24°C (76°F), while the average hovers around a comfortable 13°C (57°F). As the month transitions into autumn, evenings can dip to a brisk 2°C (36°F), reminding locals and visitors alike of the cooler days ahead. Rainfall is a regular companion, with an average total of 69 mm (2.7 in) spread over 12 days, making it essential to carry an umbrella. With humidity levels lingering at a high 85%, the air feels crisp and invigorating, enhancing the stunning scenery that Blarney has to offer. Whether exploring the famous Blarney Castle or enjoying a walk in the lush countryside, September’s weather provides a unique backdrop for all adventures.
In September, Blarney, Ireland, experiences a transition into early autumn, showcasing mild temperatures that make it an appealing time to explore the area's rich heritage. With minimums around 2°C (36°F) and a comfortable average of 13°C (57°F), the month allows for enjoyable outdoor activities amidst the stunning backdrop of changing leaves. The maximums can reach up to 24°C (76°F), giving visitors a taste of late summer warmth. This trend of gradually cooling days begins to emerge as summer fades, yet Blarney still offers plenty of charm with its inviting climate, making it a delightful destination for those looking to experience Ireland in a less crowded season.
In September, Blarney experiences a moderate precipitation of 69 mm (2.7 in), making it one of the wetter months, though not as rainy as the previous month, August, which recorded 89 mm (3.5 in). This month sees rainfall on approximately 12 days, indicating a blend of overcast skies and intermittent showers typical for early autumn. As the season progresses, September’s rainfall is a precursor to the more significant downpours expected in October, when the precipitation jumps to 95 mm (3.7 in). This trend highlights a shift from the warmer summer rains to the cooler, heavier autumn showers, setting the stage for the lush, green landscapes Blarney is renowned for.
September in Blarney, Ireland, continues the trend of high humidity characteristic of the region throughout much of the year. With an average humidity level of 85%, September maintains the elevated figures established during the summer months of June, July, and August, showcasing a consistent maritime climate. This slight uptick from August's 84% suggests a lingering warmth as autumn approaches, setting the stage for the subsequent increase to 86% in October. Overall, the data reflects Blarney's humid atmosphere, with levels remaining comfortably high, ensuring the lush greenery that the area is renowned for.
As September arrives in Blarney, Ireland, the UV Index registers at a moderate level of 5, offering a brief relief from the peak summer intensity. This shift from the very high levels of July and June, where sun exposure time is reduced dramatically to just 15 minutes, indicates the gradual transition of the seasons. With shorter days and cooler temperatures, September allows for a safer sun experience, requiring around 30 minutes of exposure before sunburn risks increase significantly. This month, while still calling for caution, marks a pleasant reprieve as nature begins to show its autumn hues. For more details on UV exposure throughout the year, visit Blarney UV Index.
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As summer gracefully transitions into autumn in Blarney, Ireland, September glimmers with a delightful 285 hours of sunshine—a charming reminder of the sunny days that preceded it. Following the peak of May with 381 hours, the sunlight starts to wane in the subsequent months, yet September holds onto a respectable amount, showcasing a gentle decline that promises the cozy embrace of fall. This month bridges the vibrant warmth of summer and the crispness that October brings, providing just enough golden light to enjoy the stunning landscapes. With each season, the ebb and flow of sunshine encapsulate the ever-changing beauty of nature, inviting all to bask in September's glow before the darker months set in.
In Blarney, Ireland, the likelihood of enjoying sunny weather in September is relatively low, with only a 19% chance of sunshine. This trend reflects the overall pattern seen in the late summer months, where the chances of bright days continue to dwindle from August's 24%. Notably, while spring months like April offer a more promising 44% chance of sun, the transition into autumn sees a dip in sunny spells. Thus, if you're planning a visit in September, it's wise to prepare for a mix of typical Irish weather, where gray skies might be more common than blue.
As summer bids farewell in Blarney, Ireland, September ushers in a gradual transition, with daylight lasting around 12 hours—a slight dip from the previous month’s 14 hours. This change marks the beginning of a steady decline in daylight hours as autumn approaches. Notably, the vibrant days of June and July, characterized by their maximum 16 hours of sunlight, give way to the softer glow of September. The month still offers plenty of daylight for outdoor explorations, but it's a gentle reminder that the long, bright days are slipping away, leading towards the shorter, cozier months ahead.
As the warm embrace of summer fades, September in Blarney, Ireland greets us with gentle breezes, averaging 3.1 m/s (7 mph). This slight dip in wind speed marks a transition from the more invigorating winds of the earlier summer months, which peaked at 5.5 m/s (12 mph) in February and hovered around 3.9 m/s (9 mph) in May. With each passing month, we see a trend toward calming air currents, especially as the year begins to lean into autumn. This month’s softness offers a serene backdrop for exploring Blarney's lush landscapes, inviting visitors to experience the charm of the countryside with the soothing sound of rustling leaves and whispering winds.
The weather in Blarney 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 Blarney and find detailed weather information for every month.
September typically offers warmer conditions compared to January, with temperatures ranging from a minimum of 2°C (36°F) to a maximum of 24°C (76°F). In contrast, January experiences colder temperatures, with a minimum of -5°C (24°F) and a maximum of 13°C (56°F). While September averages a comfortable 13°C (57°F), January sees a lower average of 6°C (43°F). Precipitation is slightly higher in September at 69 mm (2.7 in) over 12 days, compared to January's 55 mm (2.2 in) over 10 days. Both months have high humidity levels, with September at 85% and January at 83%. For a more detailed perspective on the climate, you can check Blarney weather in January.
In comparing the weather of September and February, it's evident that September offers milder temperatures, with a minimum of 2°C (36°F) and an average of 13°C (57°F), peaking at 24°C (76°F). In contrast, February experiences cooler conditions, with temperatures dipping as low as -2°C (28°F) and averaging only 7°C (44°F), reaching a maximum of 13°C (56°F). While September sees a modest 69 mm (2.7 in) of precipitation over 12 days, February has a higher rainfall of 101 mm (4.0 in) spread across 15 days. Despite the difference in temperature and precipitation, both months share a consistent humidity level of 85%. For more details, you can explore Blarney weather in February.
In comparing the weather of September and March, we can observe distinct differences in temperatures and precipitation patterns. September generally enjoys milder temperatures, with averages hovering around 13°C (57°F) and maximum highs reaching 24°C (76°F). In contrast, March experiences cooler weather, with average temperatures around 7°C (44°F) and lows dipping to -6°C (21°F).
While both months see considerable precipitation, March receives slightly more, totaling 83 mm (3.3 in) over 16 days, compared to September’s 69 mm (2.7 in) over 12 days. Humidity levels remain relatively consistent between the two months, with September at 85% and March at 84%. For those interested in more detailed information on the weather in March, you can refer to Blarney weather in March.
September and April present distinct weather patterns, reflecting the transition between summer and autumn in September and the approach of spring in April. In September, the temperatures are generally milder, ranging from a minimum of 2°C (36°F) to a maximum of 24°C (76°F), with an average of 13°C (57°F). In contrast, April experiences cooler temperatures, with a minimum of -2°C (29°F) and a maximum of 18°C (65°F), leading to an average of 9°C (48°F). Both months experience similar precipitation levels, with September receiving 69 mm (2.7 in) over approximately 12 days and April slightly higher at 72 mm (2.8 in) over 11 days, making for relatively damp conditions in both. The humidity levels are fairly comparable, sitting at 85% in September and 84% in April. For more specific details about April's weather, check out Blarney weather in April.
When comparing September and May weather, September tends to be slightly warmer, with average temperatures reaching 13°C (57°F) and maximums climbing to 24°C (76°F), while May has a cooler average of 11°C (52°F) and a maximum temperature of 23°C (74°F). Both months experience similar patterns in precipitation, with September receiving 69 mm (2.7 in) and May slightly higher at 74 mm (2.9 in), both spread over approximately 12 days. Humidity levels remain quite comparable as well, with September at 85% and May at 84%. For a more detailed look at May weather, visit Blarney weather in May.
September and June present a contrast in temperatures, although both months share the same average temperature of 14°C (57°F). In September, the temperatures range from a chilly minimum of 2°C (36°F) to a pleasant maximum of 24°C (76°F), while June enjoys slightly milder lows at 5°C (41°F) and maximums reaching 27°C (80°F). Precipitation levels are relatively close, with September receiving 69 mm (2.7 in) over 12 days compared to June's 60 mm (2.4 in) across 11 days. Notably, both months maintain a high humidity level of 85%, contributing to their characteristic dampness. For more insights into the weather during this month, you can check Blarney weather in June.
When comparing the weather in September and July, notable differences in temperature and precipitation emerge. September typically sees cooler temperatures, with minimums around 2°C (36°F) and averages of 13°C (57°F), while July enjoys milder conditions, with minimums at 7°C (44°F) and average temperatures of 16°C (61°F). Both months experience similar levels of humidity at 85%, and while September has slightly higher precipitation at 69 mm (2.7 in) over 12 days, July is not far behind with 63 mm (2.5 in) also spread across 12 days. For more detailed insights into July weather, visit Blarney weather in July.
In comparing the weather between September and August, September tends to be slightly cooler, with minimum temperatures dropping to 2°C (36°F) compared to August's 6°C (43°F). The average temperature in September is about 13°C (57°F), while in August, it is a bit warmer at 15°C (60°F). Both months feature a maximum temperature of 24°C (75°F for August and 76°F for September), but September experiences increased precipitation with 69 mm (2.7 in) over 12 days, whereas August has slightly higher rainfall at 89 mm (3.5 in) over 15 days. Humidity levels are similar, with September at 85% and August at 84%. For more detailed information on August weather conditions, you can check Blarney weather in August.
September tends to be milder than October, with average temperatures reaching 13°C (57°F), peaking at 24°C (76°F). In contrast, October experiences cooler temperatures, with averages dropping to 11°C (52°F) and a maximum of 18°C (64°F). While both months see considerable rainfall, October is wetter, accumulating 95 mm (3.7 in) over 13 days compared to September's 69 mm (2.7 in) across 12 days. Humidity levels remain relatively high in both months, slightly increasing in October to 86%. For a more detailed look at October's weather, you can visit Blarney weather in October.
In September, temperatures are generally milder, with a minimum of 2°C (36°F) and an average of 13°C (57°F), peaking at a comfortable 24°C (76°F). This month experiences 69 mm (2.7 in) of precipitation over 12 days, accompanied by relatively high humidity at 85%. In contrast, November sees cooler conditions, with temperatures dropping to a minimum of -1°C (30°F) and averaging around 8°C (47°F), with a maximum of 15°C (59°F). The precipitation increases slightly to 79 mm (3.1 in) over 13 days, and humidity remains similar at 84%. For a detailed look at the climate specifics during this month, check out Blarney weather in November.
September and December present notably different weather conditions. In September, temperatures range from a mild 2°C (36°F) at night to a pleasant 24°C (76°F) during the day, with an average of 13°C (57°F). It also sees a significant amount of precipitation, totaling 69 mm (2.7 in) over approximately 12 days, accompanied by high humidity at 85%. In contrast, December features cooler temperatures, with a minimum of -2°C (28°F) and a maximum of 14°C (57°F), averaging 7°C (45°F). Precipitation increases to 103 mm (4.1 in) over 16 days, while humidity remains slightly lower at 83%. For a detailed look at December weather patterns, visit Blarney weather in December.
As September unfolds in Blarney, the weather marks a transition from the warmth of summer to the crispness of autumn. While daytime temperatures can still reach a pleasant 24°C (76°F), the nights chill considerably, often dipping down to around 2°C (36°F). This month brings an average rainfall of 69 mm, with precipitation occurring on 12 days, resulting in an increased humidity of 85% that envelops the landscape. Compared to the preceding months, September tends to be more unpredictable, making it essential to be prepared for both sunshine and showers. For a deeper dive into the annual patterns, check out Blarney Climate.