September Weather in Ardnacrusha, Ireland

Last updated: March 17, 2025

In September, Ardnacrusha, Ireland experiences a blend of mild temperatures and varied weather conditions. With a maximum temperature reaching 26°C (80°F), it contrasts sharply with the cooler minimum of 1°C (35°F), resulting in an average of 13°C (56°F). This month is characterized by significant precipitation, totaling 85 mm (3.4 in) over approximately 15 days, contributing to a humid atmosphere with levels around 88%. Such conditions create a unique environment, perfect for both exploration and contemplation amidst the scenic Irish landscape.

September Temperature in Ardnacrusha

As September rolls into Ardnacrusha, Ireland, it welcomes a notable shift in temperatures, highlighting the transition from summer to autumn. With minimums around 1°C (35°F) and an average of 13°C (56°F), the chill begins to set in, yet days can still achieve a delightful maximum of 26°C (80°F). This month serves as a perfect bridge, where the warmth of late summer lingers, encouraging outdoor activities. While the nights may grow cooler, September remains characterized by its mild weather, offering a gentle reminder of the vibrant autumn ahead. Overall, this month signifies both the close of the warm season and the subtle embrace of fall’s crispness.

September Weather in Ardnacrusha: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Ardnacrusha, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec424344485357605956514644
Data source: Temperature data for Ardnacrusha generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Ardnacrusha

In September, Ardnacrusha experiences an average precipitation of 85 mm (or 3.4 inches), falling on about 15 days throughout the month. This marks a slight decrease from August's 120 mm (4.7 in) and highlights a transition away from the summer's heavier rains. As autumn settles in, September serves as a bridge, maintaining a steady rainfall pattern that prepares the region for the wetter months ahead. With the number of rainy days being relatively consistent compared to the previous month, it becomes clear that while the precipitation amount may vary, the occurrence of rain remains a reliable characteristic of Ardnacrusha's climate as the year progresses into its final quarter.

September Precipitation Trends in Ardnacrusha

The chart displays monthly precipitation patterns in Ardnacrusha, with values for each month alongside September's data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September's conditions compare to those of other months.
JanFebMarAprMayJunJulAugSepOctNovDec72117104577372791208510295119
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Ardnacrusha

In Ardnacrusha, Ireland, September marks a return to high humidity, with levels rising to 88%, reminiscent of the winter months. This increase comes on the heels of a summer characterized by relatively stable humidity levels around 85% in both July and August. As autumn settles in, September's humidity foreshadows the wetter months ahead, with October and November expected to escalate to 91% and 92% respectively. This trend highlights a gradual uptick in moisture as the year progresses, suggesting that the lush landscapes of Ardnacrusha thrive under such sustained atmospheric conditions.

September Average Humidity in Ardnacrusha

This chart illustrates the average monthly humidity levels in Ardnacrusha, with September's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how September's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec89%88%87%86%83%83%85%85%88%91%92%89%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Ardnacrusha

In September, Ardnacrusha experiences a moderate UV Index of 5, with a burn time of 30 minutes, highlighting a gradual shift from the summer's high levels. As the days shorten and temperatures cool, this period allows for safe outdoor activities with reasonable sun protection measures. Notably, September marks a transition point; while UV levels drop from the very high readings of July and June, they remain higher than the early months of the year, where UV exposure is minimal. Whether you're enjoying a scenic walk or engaging in outdoor sports, it’s essential to stay informed about UV conditions. For more detailed information, check the Ardnacrusha UV Index.

Maximum UV Index Levels in Ardnacrusha for September

The chart shows the monthly maximum UV Index (UVI) for Ardnacrusha in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec124578875421
Data source: Ardnacrusha September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

September Sunshine in Ardnacrusha

As the summer warmth gives way to autumn, September in Ardnacrusha embraces an impressive 271 hours of sunshine, showcasing a vibrant transition. This month follows a stellar August, which provided 314 hours, and stands strong against the approaching cooler months. Notably, September's sunshine hours maintain a notable intensity, besting both October's 218 hours and November's modest 117 hours. This trend underscores a gradual decline in daylight hours as the year progresses, yet September remains a contender for basking in the sun's golden rays, inviting both locals and visitors to revel in the lingering warmth before winter's chill settles in.

Monthly Sunshine Duration in Ardnacrusha: September Highlighted

The September sunshine duration represents the total number of hours Ardnacrusha experiences direct sunlight during the month of September, excluding cloudy or obstructed periods. This chart compares the sunshine duration of September with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec77h131h174h279h371h364h368h314h271h218h117h93h
Data source: Ardnacrusha September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Ardnacrusha During September

In Ardnacrusha, Ireland, the likelihood of sunny weather takes a noticeable dip in September, with only a 16% chance of sunshine. This trend follows the summer months when sunshine probabilities hover around the mid-20s to low-30s. As autumn approaches, there's a clear decline in sunlit days, marking September as one of the cloudier months. The sun’s absence becomes even more pronounced when compared to the brighter spells of April, which boasts a 44% chance of clear skies. This seasonal transition not only signals cooler temperatures but also a shift in the landscape, as nature prepares for the winter ahead.

Percentage of Sunny Days in September in Ardnacrusha

The chart illustrates the percentage of sunny days in Ardnacrusha throughout the year, with September highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Ardnacrusha experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec29%21%17%44%29%20%25%22%16%17%24%19%
Data source: Ardnacrusha September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Ardnacrusha in September

In Ardnacrusha, Ireland, the pattern of daylight duration presents a captivating annual rhythm. As the year progresses, the days gradually lengthen, with June and July basking in the most sunlight at 16 hours each. However, by September, the daylight begins to wane, offering about 12 hours—a gentle decline that marks the transition toward autumn. This month serves as a bridge between summer's long days and the shorter daylight hours of October, which sees a further reduction to 10 hours. Observing this gradual ebb and flow, one can appreciate how each season uniquely shapes the light and landscape of this picturesque locale.

Average Daylight Hours in Ardnacrusha for September

The chart illustrates the variation in daylight duration in Ardnacrusha throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 12m9h 52m11h 54m13h 59m15h 49m16h 47m16h 16m14h 37m12h 36m10h 32m8h 40m7h 40m
Data source: Ardnacrusha daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Ardnacrusha

In Ardnacrusha, Ireland, the September winds bear a gentle breeze, averaging 3.0 m/s (7 mph), indicative of the transitional nature of early autumn. By this time of year, the winds have noticeably calmed from their summer peak, as July recorded the lowest average wind speed at 2.5 m/s (6 mph). This month’s mild winds are a shift from the earlier months, where February featured the highest gusts at 5.0 m/s (11 mph). As September fades into October, the winds subtly pick up again, echoing a familiar rhythm of change, where the annual cycle dances between calm and turbulence. The overall trend showcases how September serves as a gentle segue into the cooler months, with winds that whisper rather than howl, welcoming harvest season and the cozy days ahead.

Average September Wind Speed in Ardnacrusha

The chart displays monthly wind speed patterns in Ardnacrusha, with values for each month shown alongside September's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how September's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec3.55.03.93.13.53.32.53.13.0 m/s3.83.54.1
Data source: Ardnacrusha September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Ardnacrusha Compares to Other Months

The weather in Ardnacrusha 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 Ardnacrusha and find detailed weather information for every month.

September and January display distinct weather patterns, reflecting the transition from late summer to winter. In September, temperatures range from a mild 1°C (35°F) at night to a warm 26°C (80°F) during the day, with an average of 13°C (56°F). Conversely, January is notably cooler, with temperatures dipping as low as -5°C (23°F) and peaking at 14°C (57°F), averaging around 6°C (43°F). Both months experience significant humidity at 88%, but September sees more rainfall, with 85 mm (3.4 in) spread over 15 days compared to January's 71 mm (2.8 in) across 12 days. For more details on the weather in January, you can check out Ardnacrusha weather in January.

In September, the weather tends to be milder, with temperatures ranging from a minimum of 1°C (35°F) to a maximum of 26°C (80°F) and an average of 13°C (56°F). The month experiences approximately 85 mm (3.4 in) of precipitation over about 15 days, while humidity remains high at 88%. In contrast, February is notably cooler, with temperatures ranging from -4°C (26°F) to a maximum of 15°C (59°F) and an average of 6°C (43°F). This month also sees more precipitation, totaling 117 mm (4.6 in) spread over 17 days, but maintains the same high humidity of 88%. For more detailed insights on February weather, you can visit Ardnacrusha weather in February.

When comparing the weather in September and March, several key differences emerge. September typically enjoys milder temperatures, with a minimum of 1°C (35°F) and a maximum of 26°C (80°F), resulting in a comfortable average of 13°C (56°F). In contrast, March is noticeably cooler, starting at a minimum of -6°C (21°F) and reaching a maximum of 17°C (63°F), with an average temperature of just 7°C (44°F).

In terms of precipitation, March sees slightly more rainfall, totaling 104 mm (4.1 in) over about 18 days, compared to September’s 85 mm (3.4 in) over 15 days. Both months experience high humidity, but September holds slightly higher levels at 88%, compared to March's 87%. For a more detailed outlook, you can check the Ardnacrusha weather in March.

September and April present distinctly different weather patterns. In September, temperatures range from a minimum of 1°C (35°F) to a maximum of 26°C (80°F), with an average of 13°C (56°F). The month sees about 85 mm (3.4 in) of precipitation over approximately 15 days, contributing to higher humidity levels at 88%. Conversely, April experiences cooler conditions, with temperatures dipping from a minimum of -2°C (28°F) to a maximum of 21°C (70°F) and an average of 9°C (48°F). Precipitation is lighter, totaling 57 mm (2.3 in) over 11 days, and humidity is slightly lower at 86%. For more details on April weather, you can check Ardnacrusha weather in April.

In September, the weather shows a wider temperature range, with minimums of 1°C (35°F) and maximums reaching 26°C (80°F), resulting in an average temperature of 13°C (56°F). The month experiences a higher level of precipitation, totaling 85 mm (3.4 in) over approximately 15 days, along with increased humidity at 88%. In contrast, May presents slightly cooler temperatures with minimums of 0°C (32°F) and maximums of 25°C (77°F), averaging around 11°C (53°F). It is characterized by less precipitation, totaling 73 mm (2.9 in) across about 13 days, and a lower humidity level of 83%. For more insights on the climate during this month, you can check out Ardnacrusha weather in May.

September weather tends to feature a wider temperature range, with minimums dropping to 1°C (35°F) and maximums reaching up to 26°C (80°F), while June enjoys milder lows of 4°C (40°F) and warmer highs of 30°C (86°F). Precipitation is more frequent in September, with 85 mm (3.4 in) spread over 15 days compared to June’s 72 mm (2.8 in) over the same number of days, making September feel slightly wetter. Humidity levels also differ slightly, with September at 88% and June at 83%, contributing to a cooler, albeit more humid, feel in the early autumn. For a detailed look at June weather conditions, check Ardnacrusha weather in June.

When comparing the weather in September and July, notable differences emerge. September experiences cooler overall temperatures, with a minimum of 1°C (35°F) and an average of 13°C (56°F), whereas July is warmer, starting at a minimum of 7°C (44°F) and averaging 16°C (61°F). July also boasts slightly higher maximum temperatures at 28°C (83°F) compared to September's maximum of 26°C (80°F). In terms of precipitation, September sees a bit more rain with 85 mm (3.4 in) over 15 days, while July has 79 mm (3.1 in) over 13 days. Humidity levels are similar, with September at 88% and July at 85%. For more detailed insights into July weather, you can check Ardnacrusha weather in July.

In September, temperatures experience a slight cooling compared to August, with minimums dropping from 6°C (42°F) in August to 1°C (35°F) in September. The average temperature in September is 13°C (56°F), which is lower than the 15°C (59°F) average recorded in August. While both months see considerable precipitation, September has 85 mm (3.4 in) over 15 days, notably less than August's 120 mm (4.7 in) spread over 19 days. Additionally, September maintains a high humidity level of 88%, slightly above August's 85%. For a closer look at the weather specifics in August, visit Ardnacrusha weather in August.

September and October display noticeable shifts in weather patterns. September enjoys a more varied temperature range, with minimums of 1°C (35°F) and maximums reaching 26°C (80°F), while averaging around 13°C (56°F). In contrast, October sees cooler temperatures, dipping to a minimum of 0°C (32°F) and peaking at just 19°C (67°F), resulting in a lower average of 10°C (51°F). Additionally, October experiences higher precipitation, totaling 102 mm (4.0 in) over 16 days, compared to September's 85 mm (3.4 in) across 15 days. Humidity also rises slightly from 88% in September to 91% in October. For a detailed look at October's weather, check out Ardnacrusha weather in October.

In comparing the weather between September and November, September tends to be warmer, with temperatures ranging from a minimum of 1°C (35°F) to a maximum of 26°C (80°F) and an average of 13°C (56°F). In contrast, November sees cooler temperatures, with a minimum of -3°C (28°F), an average of 8°C (46°F), and a maximum of 16°C (60°F). Both months experience similar levels of precipitation, with September receiving 85 mm (3.4 in) and November slightly higher at 95 mm (3.8 in), occurring over approximately 15 days in each month. Additionally, the humidity levels increase from 88% in September to 92% in November. For more detailed weather information on November, you can visit Ardnacrusha weather in November.

September and December present quite different weather patterns. In September, temperatures range from a minimum of 1°C (35°F) to a pleasant maximum of 26°C (80°F), with an average of 13°C (56°F). This month typically sees about 85 mm (3.4 in) of precipitation over 15 days, with humidity around 88%. In contrast, December is notably cooler, with temperatures dipping to a minimum of -4°C (25°F) and an average high of only 14°C (57°F). Precipitation increases to 118 mm (4.7 in) over 18 days, with humidity remaining high at 89%. For more insight into December weather in this region, you can check out Ardnacrusha weather in December.

Compare Ardnacrusha's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Ardnacrusha

As September unfolds in Ardnacrusha, the weather presents a notable transition that sets it apart from the preceding summer months. With maximum temperatures reaching a pleasant 26°C, the warmth is inviting, yet the average does dip to a cooler 13°C, hinting at the encroaching autumn. The distinct humidity level of 88%, combined with 85 mm of rain over 15 days, creates a refreshing, albeit damp, atmosphere. This unique blend of conditions offers a refreshing shift and emphasizes the area's charm as it moves toward the crisper days of fall. For a deeper look into the year-round trends, explore the detailed Ardnacrusha Climate.