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September Weather in Killenaule, Ireland

Last updated: August 23, 2025

In September, the average temperature in Killenaule, Ireland hovers around 13°C (56°F), with a minimum dipping to 0°C (33°F) and a maximum reaching 25°C (78°F). This month typically brings about 63 mm (2.5 in) of precipitation spread over 12 days, contributing to a high average humidity of 88%. Be prepared for a mix of chilly and warm days, alongside some rainy spells!

September Temperature in Killenaule

In September in Killenaule, the average temperature is 13°C (56°F). Maximums can reach 25°C (78°F), while minimums can drop as low as 0°C (33°F). Packing layers is essential for travelers, as you may experience a wide range of temperatures throughout the day.

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

The chart illustrates September temperature patterns in Killenaule, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Killenaule, September typically has an average temperature of 13°C (56°F), with highs reaching up to 25°C (78°F) and lows dropping to around 0°C (33°F).
JanFebMarAprMayJunJulAugSepOctNovDec424343475257605955504543
Data source: Temperature data for Killenaule 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 Killenaule

In Killenaule in September, the total precipitation amount reaches 63 mm (2.5 in) over the course of 12 days.

September Precipitation Trends in Killenaule

The chart displays monthly precipitation patterns in Killenaule, 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. In Killenaule, September typically receives around 63 mm (2.5 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec55102896368667097639487108
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Killenaule

In Killenaule in September, humidity is 88%. With an average temperature of 13°C (56°F), this humidity feels like a thick, warm blanket wrapping around you, making outdoor adventures sticky and challenging.

September Average Humidity in Killenaule

This chart illustrates the average monthly humidity levels in Killenaule, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Killenaule is approximately 88%, offering insight into how humid the weather typically is during this month.
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 Killenaule

In Killenaule in September, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Killenaule.

Maximum UV Index Levels in Killenaule for September

The chart shows the monthly maximum UV Index (UVI) for Killenaule 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. In September, the maximum UV index in Killenaule typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec124578875421
Data source: Killenaule 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.

How September Weather in Killenaule Compares to Other Months

Weather in Killenaule varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Killenaule, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Killenaule, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (42°F)55 mm (2.2 inches)88%low
February Weather6°C (43°F)102 mm (4.0 inches)88%low
March Weather6°C (44°F)89 mm (3.5 inches)87%moderate
April Weather8°C (47°F)63 mm (2.5 inches)86%moderate
May Weather11°C (52°F)68 mm (2.7 inches)83%high
June Weather14°C (57°F)66 mm (2.6 inches)83%very high
July Weather16°C (61°F)69 mm (2.7 inches)85%very high
August Weather15°C (59°F)97 mm (3.8 inches)85%high
September Weather13°C (56°F)63 mm (2.5 inches)88%moderate
October Weather10°C (50°F)94 mm (3.7 inches)91%moderate
November Weather7°C (45°F)87 mm (3.4 inches)92%low
December Weather6°C (43°F)108 mm (4.2 inches)89%low

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