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September Weather in Ferns, Ireland

Last updated: August 23, 2025

In Ferns, Ireland, the average temperature in September is a pleasant 14°C (57°F). Expect a cool minimum of 3°C (37°F) and a comfortable maximum of 23°C (74°F). During this month, precipitation averages around 73 mm (2.9 in) over 12 days. Additionally, you'll find the average humidity to be quite high at 86%, making for a uniquely refreshing atmosphere.

September Temperature in Ferns

In September in Ferns, the average temperature is 14°C (57°F). The maximum can reach 23°C (74°F), while the minimum can drop as low as 3°C (37°F). This mild climate makes it an ideal time for travelers to explore the outdoor attractions and enjoy the pleasant weather.

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

The chart illustrates September temperature patterns in Ferns, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Ferns, September typically has an average temperature of 14°C (57°F), with highs reaching up to 23°C (74°F) and lows dropping to around 3°C (37°F).
JanFebMarAprMayJunJulAugSepOctNovDec434445485258616057524745
Data source: Temperature data for Ferns 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 Ferns

In Ferns in September, the precipitation amount is 73 mm (2.9 in) occurring over a span of 12 days.

September Precipitation Trends in Ferns

The chart displays monthly precipitation patterns in Ferns, 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 Ferns, September typically receives around 73 mm (2.9 inches) of precipitation spread over approximately 12 days.
JanFebMarAprMayJunJulAugSepOctNovDec50887759626562947393106106
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Ferns

In Ferns in September humidity is 86%. With an average temperature of 14°C (57°F), this humidity feels like a heavy blanket enveloping you, making travel feel oppressive and uncomfortably sticky.

September Average Humidity in Ferns

This chart illustrates the average monthly humidity levels in Ferns, 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 Ferns is approximately 86%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec85%86%86%85%83%85%86%85%86%87%87%84%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Ferns

In Ferns 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 Ferns.

Maximum UV Index Levels in Ferns for September

The chart shows the monthly maximum UV Index (UVI) for Ferns 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 Ferns typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec124578875421
Data source: Ferns 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 Ferns Compares to Other Months

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

This table compares monthly weather conditions in Ferns, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather6°C (44°F)50 mm (2.0 inches)85%low
February Weather7°C (45°F)88 mm (3.4 inches)86%low
March Weather7°C (45°F)77 mm (3.0 inches)86%moderate
April Weather9°C (48°F)59 mm (2.3 inches)85%moderate
May Weather11°C (53°F)62 mm (2.4 inches)83%high
June Weather14°C (58°F)65 mm (2.6 inches)85%very high
July Weather16°C (61°F)62 mm (2.4 inches)86%very high
August Weather16°C (61°F)94 mm (3.7 inches)85%high
September Weather14°C (57°F)73 mm (2.9 inches)86%moderate
October Weather11°C (53°F)93 mm (3.7 inches)87%moderate
November Weather9°C (48°F)106 mm (4.2 inches)86%low
December Weather7°C (45°F)106 mm (4.2 inches)84%low

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