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September Weather in Rathmore, Ireland

Last updated: August 23, 2025

In September, the average temperature in Rathmore, Ireland hovers around 13°C (55°F), with a comfortable range from a cool 2°C (35°F) to a warm 25°C (77°F). Expect about 81 mm (3.2 in) of rainfall spread over 14 days, contributing to an average humidity of 85%. It's a month where layering your clothing and carrying an umbrella might just be essential!

September Temperature in Rathmore

In September in Rathmore, the average temperature is 13°C (55°F). The maximum can reach 25°C (77°F), and the minimum can be as low as 2°C (35°F). This makes it an ideal time for travelers to enjoy a variety of outdoor activities while experiencing a comfortable climate.

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

The chart illustrates September temperature patterns in Rathmore, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Rathmore, September typically has an average temperature of 13°C (55°F), with highs reaching up to 25°C (77°F) and lows dropping to around 2°C (35°F).
JanFebMarAprMayJunJulAugSepOctNovDec424343475156595855504544
Data source: Temperature data for Rathmore 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 Rathmore

In Rathmore in September, the precipitation amount is 81 mm (3.2 in) over a span of 14 days.

September Precipitation Trends in Rathmore

The chart displays monthly precipitation patterns in Rathmore, 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 Rathmore, September typically receives around 81 mm (3.2 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec74129105808070691048111393125
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Rathmore

In Rathmore 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 Rathmore

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

In Rathmore 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 Rathmore.

Maximum UV Index Levels in Rathmore for September

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

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

This table compares monthly weather conditions in Rathmore, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (42°F)74 mm (2.9 inches)83%low
February Weather6°C (43°F)129 mm (5.1 inches)85%low
March Weather6°C (43°F)105 mm (4.1 inches)84%moderate
April Weather8°C (47°F)80 mm (3.1 inches)84%high
May Weather11°C (51°F)80 mm (3.2 inches)84%high
June Weather13°C (56°F)70 mm (2.8 inches)85%very high
July Weather15°C (59°F)68 mm (2.7 inches)85%very high
August Weather14°C (58°F)104 mm (4.1 inches)84%high
September Weather13°C (55°F)81 mm (3.2 inches)85%moderate
October Weather10°C (50°F)113 mm (4.4 inches)86%moderate
November Weather7°C (45°F)93 mm (3.7 inches)84%low
December Weather6°C (44°F)124 mm (4.9 inches)83%low

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