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September Weather in Cill Airne, Ireland

Last updated: August 23, 2025

In Cill Airne, Ireland, the average temperature in September is a comfortable 13°C (55°F), with a minimum of 2°C (37°F) and a maximum reaching 26°C (78°F). Visitors should prepare for 91 mm (3.6 in) of precipitation over approximately 15 days, combined with an average humidity of 85%. Enjoy the unique climate this month brings!

September Temperature in Cill Airne

In September in Cill Airne, the average temperature is 13°C (55°F), with maximums reaching 26°C (78°F) and minimums dropping as low as 2°C (37°F). This pleasant climate makes Cill Airne an ideal destination for travelers seeking moderate weather and enjoyable outdoor activities during this time of year.

September Weather in Cill Airne: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Cill Airne, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Cill Airne, September typically has an average temperature of 13°C (55°F), with highs reaching up to 26°C (78°F) and lows dropping to around 2°C (37°F).
JanFebMarAprMayJunJulAugSepOctNovDec424343475156595855504544
Data source: Temperature data for Cill Airne 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 Cill Airne

In Cill Airne in September, the total precipitation amount is 91 mm (3.6 in) over a span of 15 days.

September Precipitation Trends in Cill Airne

The chart displays monthly precipitation patterns in Cill Airne, 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 Cill Airne, September typically receives around 91 mm (3.6 inches) of precipitation spread over approximately 15 days.
JanFebMarAprMayJunJulAugSepOctNovDec821461188690817912591132106139
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Cill Airne

In Cill Airne in September, humidity is 85%. With an average temperature of 13°C (55°F), this humidity feels like a heavy blanket wrapping around you, making even short walks feel exhausting and urging travelers to seek shade and refreshment frequently.

September Average Humidity in Cill Airne

This chart illustrates the average monthly humidity levels in Cill Airne, 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 Cill Airne is approximately 85%, offering insight into how humid the weather typically is during this month.
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 Cill Airne

In Cill Airne 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 Cill Airne.

Maximum UV Index Levels in Cill Airne for September

The chart shows the monthly maximum UV Index (UVI) for Cill Airne 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 Cill Airne typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec124678875421
Data source: Cill Airne 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 Cill Airne Compares to Other Months

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

This table compares monthly weather conditions in Cill Airne, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (42°F)82 mm (3.2 inches)83%low
February Weather6°C (43°F)145 mm (5.7 inches)85%low
March Weather6°C (43°F)118 mm (4.6 inches)84%moderate
April Weather8°C (47°F)86 mm (3.4 inches)84%high
May Weather11°C (52°F)90 mm (3.6 inches)84%high
June Weather13°C (56°F)81 mm (3.2 inches)85%very high
July Weather15°C (59°F)79 mm (3.1 inches)85%very high
August Weather14°C (58°F)125 mm (4.9 inches)84%high
September Weather13°C (55°F)91 mm (3.6 inches)85%moderate
October Weather10°C (50°F)132 mm (5.2 inches)86%moderate
November Weather7°C (46°F)106 mm (4.2 inches)84%low
December Weather6°C (44°F)139 mm (5.5 inches)83%low

Compare Cill Airne's Climate with Cities Worldwide