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September Weather in Ballyclare, United Kingdom

Last updated: August 27, 2025

In Ballyclare, United Kingdom, the average temperature in September is a mild 13°C (56°F). Visitors can expect temperatures to range from a cool 4°C (39°F) to a warm 21°C (70°F). With an average precipitation of 77 mm (3.0 in) spread over 16 days, it's wise to prepare for some rain. Additionally, the average humidity hovers around 88%, adding a touch of moisture to the ambiance!

September Temperature in Ballyclare

In September in Ballyclare, the average temperature is 13°C (56°F). Maximums can reach 21°C (70°F), while minimums can be as low as 4°C (39°F). Overall, it's a great time to explore Ballyclare with mild temperatures and a mix of cool and warm days.

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

The chart illustrates September temperature patterns in Ballyclare, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Ballyclare, September typically has an average temperature of 13°C (56°F), with highs reaching up to 21°C (70°F) and lows dropping to around 4°C (39°F).
JanFebMarAprMayJunJulAugSepOctNovDec424344475256595956514743
Data source: Temperature data for Ballyclare 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 Ballyclare

In Ballyclare in September, the precipitation amount is 77 mm (3.0 in) during 16 days, indicating a moderately wet climate for that period.

September Precipitation Trends in Ballyclare

The chart displays monthly precipitation patterns in Ballyclare, 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 Ballyclare, September typically receives around 77 mm (3.0 inches) of precipitation spread over approximately 16 days.
JanFebMarAprMayJunJulAugSepOctNovDec6193814565849312077969792
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Ballyclare

In Ballyclare 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 Ballyclare

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

In Ballyclare 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 Ballyclare.

Maximum UV Index Levels in Ballyclare for September

The chart shows the monthly maximum UV Index (UVI) for Ballyclare 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 Ballyclare typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec123568865321
Data source: Ballyclare 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 Ballyclare Compares to Other Months

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

This table compares monthly weather conditions in Ballyclare, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather6°C (42°F)61 mm (2.4 inches)87%low
February Weather6°C (43°F)93 mm (3.7 inches)86%low
March Weather7°C (44°F)81 mm (3.2 inches)86%moderate
April Weather8°C (47°F)45 mm (1.8 inches)85%moderate
May Weather11°C (52°F)65 mm (2.6 inches)82%high
June Weather14°C (57°F)84 mm (3.3 inches)84%very high
July Weather15°C (59°F)93 mm (3.7 inches)86%very high
August Weather15°C (59°F)120 mm (4.7 inches)86%high
September Weather13°C (56°F)77 mm (3.0 inches)88%moderate
October Weather11°C (51°F)96 mm (3.8 inches)89%moderate
November Weather8°C (47°F)97 mm (3.8 inches)90%low
December Weather6°C (44°F)92 mm (3.6 inches)86%low

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