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September Weather in Nenagh, Ireland

Last updated: August 23, 2025

In September, the average temperature in Nenagh, Ireland is a comfortable 13°C (56°F), with a minimum dipping to 1°C (35°F) and a peak reaching 26°C (79°F). Expect about 79 mm (3.1 in) of precipitation over 15 days, contributing to the region's 88% average humidity.

September Temperature in Nenagh

In September in Nenagh, the average temperature is 13°C (56°F). Maximums can reach 26°C (79°F), and minimums can be as low as 1°C (35°F). Be prepared for a range of temperatures and pack accordingly for your travels!

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

The chart illustrates September temperature patterns in Nenagh, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Nenagh, 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 (35°F).
JanFebMarAprMayJunJulAugSepOctNovDec424344475257605955504543
Data source: Temperature data for Nenagh 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 Nenagh

In Nenagh in September, the precipitation amount is 79 mm (3.1 in) spread over 15 days.

September Precipitation Trends in Nenagh

The chart displays monthly precipitation patterns in Nenagh, 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 Nenagh, September typically receives around 79 mm (3.1 inches) of precipitation spread over approximately 15 days.
JanFebMarAprMayJunJulAugSepOctNovDec67114101587071771127910193116
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Nenagh

In Nenagh 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 Nenagh

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

In Nenagh 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 Nenagh.

Maximum UV Index Levels in Nenagh for September

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

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

This table compares monthly weather conditions in Nenagh, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (42°F)67 mm (2.7 inches)88%low
February Weather6°C (43°F)114 mm (4.5 inches)88%low
March Weather6°C (44°F)101 mm (4.0 inches)87%moderate
April Weather9°C (48°F)58 mm (2.3 inches)86%moderate
May Weather11°C (52°F)70 mm (2.7 inches)83%high
June Weather14°C (57°F)71 mm (2.8 inches)83%very high
July Weather16°C (60°F)77 mm (3.0 inches)85%very high
August Weather15°C (59°F)111 mm (4.4 inches)85%high
September Weather13°C (56°F)79 mm (3.1 inches)88%moderate
October Weather10°C (51°F)101 mm (4.0 inches)91%moderate
November Weather7°C (46°F)93 mm (3.6 inches)92%low
December Weather6°C (44°F)116 mm (4.6 inches)89%low

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