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September Weather in Roscrea, Ireland

Last updated: August 23, 2025

In Roscrea, Ireland, the average temperature in September hovers around 13°C (56°F). During this time, locals can experience a minimum of 1°C (34°F) and a maximum of 26°C (79°F). Be prepared for 75 mm (3.0 in) of precipitation spread over 14 days, contributing to the region's average humidity of 88%. Whether you’re enjoying the cool breezes or the occasional rain, this month offers a unique climate experience!

September Temperature in Roscrea

In September in Roscrea, the average temperature is 13°C (56°F). Maximums can reach 26°C (79°F), and minimums can be as low as 1°C (34°F). This pleasant range makes Roscrea an ideal destination for travelers seeking comfortable weather and outdoor activities.

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

The chart illustrates September temperature patterns in Roscrea, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Roscrea, September typically has an average temperature of 13°C (56°F), with highs reaching up to 26°C (79°F) and lows dropping to around 1°C (34°F).
JanFebMarAprMayJunJulAugSepOctNovDec424344475257605955504543
Data source: Temperature data for Roscrea 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 Roscrea

In Roscrea in September, the precipitation amount is 75 mm (3.0 in) spread over 14 days, indicating a relatively wet period for the region.

September Precipitation Trends in Roscrea

The chart displays monthly precipitation patterns in Roscrea, 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 Roscrea, September typically receives around 75 mm (3.0 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec61999257727580103769089104
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Roscrea

In Roscrea 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 Roscrea

This chart illustrates the average monthly humidity levels in Roscrea, 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 Roscrea 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 Roscrea

In Roscrea 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 Roscrea.

Maximum UV Index Levels in Roscrea for September

The chart shows the monthly maximum UV Index (UVI) for Roscrea 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 Roscrea typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec124578875321
Data source: Roscrea 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 Roscrea Compares to Other Months

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

This table compares monthly weather conditions in Roscrea, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (42°F)61 mm (2.4 inches)88%low
February Weather6°C (43°F)99 mm (3.9 inches)88%low
March Weather6°C (44°F)92 mm (3.6 inches)87%moderate
April Weather9°C (48°F)57 mm (2.2 inches)86%moderate
May Weather11°C (53°F)72 mm (2.8 inches)83%high
June Weather14°C (58°F)75 mm (2.9 inches)83%very high
July Weather16°C (61°F)80 mm (3.1 inches)85%very high
August Weather15°C (59°F)103 mm (4.1 inches)85%high
September Weather13°C (56°F)75 mm (3.0 inches)88%moderate
October Weather10°C (51°F)90 mm (3.5 inches)91%moderate
November Weather7°C (46°F)89 mm (3.5 inches)92%low
December Weather6°C (44°F)104 mm (4.1 inches)89%low

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