September Weather in Killorglin, Ireland

Last updated: March 17, 2025

In September, Killorglin, Ireland experiences a captivating blend of weather patterns that reflect the transition into autumn. The maximum temperature can reach a pleasant 27°C (80°F), while the average hovers around a cool 13°C (56°F). As nights draw in, temperatures can dip to a minimum of 2°C (36°F). This month also sees 99 mm (3.9 in) of rainfall spread over 16 days, contributing to the lush, green landscapes the region is renowned for. With a humidity level of 85%, the air feels fresh yet can be quite damp at times, enhancing the charming allure of Killorglin during September.

September Temperature in Killorglin

In September, Killorglin experiences a beautiful transition toward autumn, marked by a welcoming shift in temperatures. With a minimum of 2°C (36°F) and a maximum reaching up to 27°C (80°F), the month boasts an average temperature of 13°C (56°F), providing a comfortable climate for outdoor activities. This significant increase from the cooler summer months highlights the region's mild nature during early fall, making it an ideal time to explore the stunning landscapes and vibrant local culture. As temperatures begin to dip in October, September serves as a gentle reminder of the warmer days passed while hinting at the crispness to come.

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

The chart illustrates September temperature patterns in Killorglin, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec424344485256605856514644
Data source: Temperature data for Killorglin generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Killorglin

In September, Killorglin experiences a moderate precipitation amount of 99 mm (3.9 in) over approximately 16 days of rain. This reflects a slight decrease from the wetter months of August and the typically rainier October, which follows with 145 mm (5.7 in). The overall trend shows that as summer transitions into autumn, rainfall tends to increase, yet September maintains a balance, marking a gentle shift in weather patterns. With the lush landscape nourished by these early autumn showers, Killorglin prepares for the vibrant hues of fall, making it a picturesque time to experience this charming Irish town.

September Precipitation Trends in Killorglin

The chart displays monthly precipitation patterns in Killorglin, 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.
JanFebMarAprMayJunJulAugSepOctNovDec8915712690101878214399146118149
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Killorglin

In Killorglin, Ireland, the month of September typically experiences a humidity level of 85%, consistent with the high humidity that characterizes the summer months. This value reflects a slight uptick from August, maintaining the transition into the more humid conditions of autumn. Notably, the humidity remains relatively stable throughout the year with January and December showing the lowest levels at 83%. Overall, the atmospheric moisture in Killorglin exhibits a gentle ebb and flow, hovering between 83% and 86%, ensuring that the landscape remains lush and vibrant as the seasons change.

September Average Humidity in Killorglin

This chart illustrates the average monthly humidity levels in Killorglin, 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.
JanFebMarAprMayJunJulAugSepOctNovDec83%85%84%84%84%85%85%84%85%86%84%83%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Killorglin

As September unfolds in Killorglin, Ireland, residents and visitors alike can expect a moderate UV Index of 5, which indicates a burn time of about 30 minutes for fair-skinned individuals. This marks a slight decline from the summer months, where the UV rays peaked at 8 during June and July. The transition into autumn brings a decrease in solar intensity, reflected in the lower UV readings. However, September still requires sun protection, especially during midday hours. As the year progresses, one can observe a general trend of diminishing UV exposure from the sun, with the index gradually tapering down to safer levels as winter approaches. To keep informed about UV levels year-round, check out Killorglin UV Index.

Maximum UV Index Levels in Killorglin for September

The chart shows the monthly maximum UV Index (UVI) for Killorglin 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.
JanFebMarAprMayJunJulAugSepOctNovDec124678875421
Data source: Killorglin 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 Killorglin

In Killorglin, Ireland, September showcases a delightful transition in weather, boasting 274 hours of sunshine that gently invites the onset of autumn. This month marks a subtle decline from the vibrant summer, as May shines the brightest with 375 hours, followed closely by July and June. The gradual decrease in daylight hours serves as a reminder of the changing seasons, yet September still offers plenty of golden moments for outdoor adventures. While the sun begins to retreat, it gracefully paves the way to cooler months, with October providing a notable 215 hours—a clear illustration of the natural ebb and flow of light throughout the year.

Monthly Sunshine Duration in Killorglin: September Highlighted

The September sunshine duration represents the total number of hours Killorglin 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.
JanFebMarAprMayJunJulAugSepOctNovDec78h129h179h292h375h350h353h325h274h215h122h90h
Data source: Killorglin September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Killorglin During September

In September, Killorglin, Ireland, enjoys a 17% chance of sunny weather, making it one of the less favorable months for sunlight. This percentage reflects a noticeable trend in the year, as it falls just below the averages seen in late spring and summer, where chances of sun peak in April at 40%. As the summer fades, the likelihood of sunshine diminishes, with September sharing similar lackluster prospects with October at 17%. While the vibrant hues of autumn begin to emerge, potential visitors should be prepared for a mix of weather, as the crispness of early fall may not always be accompanied by sunny skies.

Percentage of Sunny Days in September in Killorglin

The chart illustrates the percentage of sunny days in Killorglin 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 Killorglin experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec25%18%18%40%24%18%25%21%17%17%21%15%
Data source: Killorglin September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Killorglin in September

As summer gives way to autumn in Killorglin, September sees a transition in daylight hours, with approximately 12 hours of brilliant sunlight. This month marks a noticeable decline from the peak summer days of 16 hours in June and July. The gradual fading of longer days begins, yet September offers a pleasant blend of lingering warmth and the early hints of fall. The daylight duration continues to decrease as the year progresses, leading toward shorter autumn days. This rhythm of changing light not only reflects the shift in seasons but also enhances the enchanting beauty of Killorglin's landscapes, inviting residents and visitors alike to revel in the subtle, golden hues of early autumn.

Average Daylight Hours in Killorglin for September

The chart illustrates the variation in daylight duration in Killorglin throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 19m9h 55m11h 54m13h 56m15h 43m16h 38m16h 9m14h 33m12h 35m10h 34m8h 46m7h 48m
Data source: Killorglin daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Killorglin

As September rolls into Killorglin, the gentle whispers of the September wind reveal a characteristic drop in breeze, with average wind speeds settling at a calm 2.8 m/s (6 mph). This slight decrease follows the mild currents of the summer months, where winds recorded were at their lowest in July. As autumn approaches, there’s a notable pattern of fluctuating winds – a brief respite before October brings back a comforting gust at 3.4 m/s (8 mph). This transition beautifully showcases Ireland's dynamic climate, reminding us that every season offers its unique touch to the rural landscape of Killorglin, where the wind dances quietly through the vibrant hills and valleys.

Average September Wind Speed in Killorglin

The chart displays monthly wind speed patterns in Killorglin, 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.
JanFebMarAprMayJunJulAugSepOctNovDec3.14.73.63.13.63.12.53.02.8 m/s3.43.13.9
Data source: Killorglin September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Killorglin Compares to Other Months

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

When comparing the weather in September and January, there are notable differences in temperature and precipitation. September enjoys a wider temperature range, with minimums around 2°C (36°F) and maximums reaching up to 27°C (80°F), resulting in a pleasant average of 13°C (56°F). In contrast, January features much cooler temperatures, with minimums dropping to -6°C (22°F) and a maximum of 13°C (56°F), leading to an average of just 6°C (43°F). While September experiences 99 mm (3.9 in) of precipitation over 16 days, January has slightly less, at 89 mm (3.5 in) over 14 days. Humidity levels are also quite similar, with September at 85% and January at 83%. For more detailed insights into January's climate, you can check Killorglin weather in January.

September and February exhibit notable contrasts in weather patterns. In September, temperatures range from a minimum of 2°C (36°F) to a maximum of 27°C (80°F), averaging around 13°C (56°F). This month sees around 99 mm (3.9 in) of precipitation over approximately 16 days, with humidity consistently high at 85%. In contrast, February is chillier, with temperatures dipping as low as -4°C (25°F) and peaking at 14°C (58°F), averaging 6°C (44°F). Additionally, February experiences increased rainfall, totaling 157 mm (6.2 in) spread over 19 days while maintaining the same humidity level of 85%. For further details on February weather in Killorglin, you can visit Killorglin weather in February.

In comparing the weather of September and March, it's evident that March tends to be cooler overall, with average temperatures around 6°C (44°F) compared to September's milder average of 13°C (56°F). While September can experience maximum highs of 27°C (80°F), March's highs only reach 18°C (64°F). Precipitation also differs, with March recording a slightly higher level at 126 mm (4.9 in) over 18 days, versus September's 99 mm (3.9 in) over 16 days. Interestingly, humidity levels remain similar in both months, with September at 85% and March at 84%. For more detailed information, you can check Killorglin weather in March.

September and April exhibit distinct weather patterns, reflecting the transition from summer to autumn and winter to spring, respectively. In September, temperatures range from a minimum of 2°C (36°F) to a maximum of 27°C (80°F), with an average of 13°C (56°F). This month experiences a higher average humidity level of 85% and slightly more precipitation, totaling 99 mm (3.9 in) over 16 days. In contrast, April is cooler, featuring temperatures that range from a minimum of -3°C (28°F) to a maximum of 20°C (69°F), with an average of 9°C (48°F). Though April has slightly less rainfall at 90 mm (3.6 in) over 13 days, it maintains a comparable humidity level of 84%. For a detailed look at weather conditions in April, you can visit Killorglin weather in April.

September and May both present mild temperatures, but September generally offers warmer conditions. In September, the temperatures range from a chilly 2°C (36°F) at night to a comfortable 27°C (80°F) during the day, with an average of 13°C (56°F). In contrast, May has a lower temperature range, with minimums of 0°C (31°F) and maximums of 25°C (76°F), averaging 11°C (52°F). Rainfall is fairly similar in both months, with September receiving 99 mm (3.9 in) over 16 days, while May experiences slightly more at 101 mm (4.0 in) over 14 days. Humidity remains high in both months, with September showing 85% and May slightly less at 84%. For more detailed insights into May’s weather, visit Killorglin weather in May.

When comparing the weather in September and June, we see some interesting differences. September features a wider temperature range, with minimums dipping to 2°C (36°F) and maximums reaching up to 27°C (80°F), while June typically experiences slightly warmer temperatures, ranging from 4°C (40°F) to a high of 30°C (86°F). Despite June having more days with rain—15 days—September has slightly higher precipitation totals at 99 mm (3.9 in) compared to June's 87 mm (3.4 in). Both months share the same humidity level of 85%, creating a consistently humid environment. For more details about the weather in June, you can visit Killorglin weather in June.

September weather is characterized by a wider temperature range, with minimums dropping to 2°C (36°F) and maximums reaching 27°C (80°F), compared to July's milder range of 7°C (46°F) to 28°C (82°F). While both months experience similar humidity levels at 85%, September sees more precipitation, averaging 99 mm (3.9 in) over 16 days, compared to July's 82 mm (3.2 in) over 14 days. This indicates that September is generally wetter and cooler than July, marking a transition into the fall season. For a closer look at July's climate specifics, you can refer to Killorglin weather in July.

In comparing the weather of September to August, September tends to be cooler with a minimum temperature of 2°C (36°F) and an average of 13°C (56°F), while August has warmer minimums starting at 7°C (45°F) and an average of 15°C (59°F). Despite September's higher maximum temperature of 27°C (80°F) compared to August’s maximum of 23°C (74°F), it experiences more precipitation, totaling 99 mm (3.9 in) over 16 days, whereas August sees 143 mm (5.6 in) over 19 days. Both months have similar humidity levels, with September at 85% and August slightly lower at 84%. For more detailed insights, you can check Killorglin weather in August.

September and October weather present a notable transition as autumn deepens. In September, temperatures typically range from a minimum of 2°C (36°F) to a maximum of 27°C (80°F), with an average of 13°C (56°F). The month sees around 99 mm (3.9 in) of precipitation over 16 days, coupled with high humidity levels averaging 85%. In contrast, October brings cooler temperatures, with highs reaching only 18°C (64°F) and lows dropping to -1°C (31°F), leading to an average temperature of 10°C (51°F). This month experiences increased rainfall at 145 mm (5.7 in) over 18 days, alongside slightly higher humidity at 86%. For more details on the weather in October, you can check Killorglin weather in October.

September and November exhibit notable differences in weather patterns. In September, temperatures range from a mild 2°C (36°F) to a warm 27°C (80°F), with an average of 13°C (56°F). The month sees around 99 mm (3.9 in) of precipitation spread over 16 days, along with relatively high humidity at 85%. In contrast, November experiences cooler conditions with minimum temperatures dropping to -2°C (29°F) and a maximum of 15°C (59°F), yielding an average of 8°C (46°F). Precipitation increases slightly to 118 mm (4.7 in) over 17 days, while humidity remains relatively stable at 84%. For more detailed insights, you can check out Killorglin weather in November.

September and December exhibit notable contrasts in weather patterns. In September, temperatures range from a minimum of 2°C (36°F) to a maximum of 27°C (80°F), with an average of 13°C (56°F). The month experiences about 99 mm (3.9 in) of precipitation over 16 days, accompanied by high humidity at 85%. In stark contrast, December features cooler temperatures, with a minimum of -2°C (29°F), an average of 7°C (45°F), and a maximum of 13°C (56°F). Precipitation increases to 148 mm (5.8 in) spread over 19 days, and humidity remains relatively high at 83%. For a detailed look at the specifics of December weather, you can visit Killorglin weather in December.

Compare Killorglin's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Killorglin

September in Killorglin brings a distinctive transition as summer fades, featuring mild temperatures and increased humidity. With an average temperature of 13°C, the month showcases a balance between warmth and coolness, evidenced by maximums reaching up to 27°C while dipping to a brisk 2°C at night. Rainfall becomes more frequent, with nearly half the month seeing some precipitation, making it one of the wetter times of the year. This blend of weather creates a unique atmosphere, perfect for enjoying the beautiful autumnal scenery. For more detailed insights into the local climate, visit Killorglin Climate.