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September Weather in Rathfriland, United Kingdom

Last updated: August 27, 2025

In Rathfriland, United Kingdom, the average temperature in September hovers around 13°C (56°F), with a comfortable range between a chilly 3°C (37°F) and a pleasant 22°C (72°F). Expect 70 mm (2.8 in) of precipitation spread across 14 days, contributing to a notably high average humidity of 88%. Embrace the climate as you explore the beauty of this destination!

September Temperature in Rathfriland

In September in Rathfriland, the average temperature is 13°C (56°F), with maximums reaching 22°C (72°F) and minimums dropping as low as 3°C (37°F). It's a great time for travelers to enjoy mild weather, making it perfect for outdoor activities and exploration.

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

The chart illustrates September temperature patterns in Rathfriland, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Rathfriland, September typically has an average temperature of 13°C (56°F), with highs reaching up to 22°C (72°F) and lows dropping to around 3°C (37°F).
JanFebMarAprMayJunJulAugSepOctNovDec424344475257605956514643
Data source: Temperature data for Rathfriland 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 Rathfriland

In Rathfriland in September, the precipitation amount is 70 mm (2.8 in) spread over 14 days.

September Precipitation Trends in Rathfriland

The chart displays monthly precipitation patterns in Rathfriland, 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 Rathfriland, September typically receives around 70 mm (2.8 inches) of precipitation spread over approximately 14 days.
JanFebMarAprMayJunJulAugSepOctNovDec5482774465747411370808385
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Rathfriland

In Rathfriland 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 Rathfriland

This chart illustrates the average monthly humidity levels in Rathfriland, 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 Rathfriland is approximately 88%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec87%86%86%85%82%84%86%86%88%89%90%87%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Rathfriland

In Rathfriland 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 Rathfriland.

Maximum UV Index Levels in Rathfriland for September

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

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

This table compares monthly weather conditions in Rathfriland, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather5°C (42°F)54 mm (2.1 inches)87%low
February Weather6°C (43°F)82 mm (3.2 inches)86%low
March Weather7°C (44°F)77 mm (3.0 inches)86%moderate
April Weather8°C (47°F)44 mm (1.7 inches)85%moderate
May Weather11°C (53°F)65 mm (2.6 inches)82%high
June Weather14°C (58°F)74 mm (2.9 inches)84%very high
July Weather16°C (61°F)73 mm (2.9 inches)86%very high
August Weather15°C (60°F)113 mm (4.4 inches)86%high
September Weather13°C (56°F)70 mm (2.8 inches)88%moderate
October Weather10°C (51°F)80 mm (3.2 inches)89%moderate
November Weather8°C (46°F)82 mm (3.2 inches)90%low
December Weather6°C (43°F)85 mm (3.4 inches)86%low

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