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September Weather in Swinford, Ireland

Last updated: August 23, 2025

In September, the average temperature in Swinford, Ireland hovers around 13°C (55°F), with a minimum of 2°C (35°F) and a maximum of 24°C (76°F). Expect about 89 mm (3.5 in) of precipitation spread across 17 days, coupled with a high average humidity of 88%. Stay prepared for wet and cool conditions!

September Temperature in Swinford

In September in Swinford, the average temperature is 13°C (55°F). Maximums can reach 24°C (76°F) and minimums can be as low as 2°C (35°F). This moderate climate makes it a great time for travelers to explore the outdoor attractions and enjoy the scenery.

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

The chart illustrates September temperature patterns in Swinford, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Swinford, September typically has an average temperature of 13°C (55°F), with highs reaching up to 24°C (76°F) and lows dropping to around 2°C (35°F).
JanFebMarAprMayJunJulAugSepOctNovDec424344475256595855504644
Data source: Temperature data for Swinford 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 Swinford

In Swinford in September, the total precipitation amount is 89 mm (3.5 in), occurring over the course of 17 days.

September Precipitation Trends in Swinford

The chart displays monthly precipitation patterns in Swinford, 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 Swinford, September typically receives around 89 mm (3.5 inches) of precipitation spread over approximately 17 days.
JanFebMarAprMayJunJulAugSepOctNovDec811251086778909414589122106111
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Swinford

In Swinford in September humidity is 88%. With an average temperature of 13°C (55°F), this humidity feels like a damp chill that clings to your skin, making it essential to dress in layers while exploring, as the moisture in the air can lead to a rather uncomfortable experience for traveling.

September Average Humidity in Swinford

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

In Swinford 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 Swinford.

Maximum UV Index Levels in Swinford for September

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

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

This table compares monthly weather conditions in Swinford, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather6°C (43°F)81 mm (3.2 inches)88%low
February Weather6°C (43°F)125 mm (4.9 inches)88%low
March Weather6°C (44°F)108 mm (4.3 inches)87%moderate
April Weather9°C (48°F)66 mm (2.6 inches)86%moderate
May Weather11°C (52°F)78 mm (3.1 inches)83%high
June Weather13°C (56°F)90 mm (3.6 inches)83%very high
July Weather15°C (59°F)94 mm (3.7 inches)85%very high
August Weather15°C (59°F)145 mm (5.7 inches)85%high
September Weather13°C (55°F)89 mm (3.5 inches)88%moderate
October Weather10°C (51°F)122 mm (4.8 inches)91%moderate
November Weather8°C (46°F)106 mm (4.2 inches)92%low
December Weather6°C (44°F)111 mm (4.4 inches)89%low

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