nomadseason

September Weather in Ballykelly, United Kingdom

Last updated: August 27, 2025

In September, the average temperature in Ballykelly, United Kingdom hovers around 13°C (55°F), with a minimum dip to 3°C (38°F) and a maximum rise to 22°C (72°F). Expect a decent amount of rain, with 86 mm (3.4 in) of precipitation spread over 17 days. The air tends to be quite humid, averaging around 88%, so be prepared for a moist atmosphere!

September Temperature in Ballykelly

In September in Ballykelly, the average temperature is 13°C (55°F). The maximum can reach 22°C (72°F), while the minimum can be as low as 3°C (38°F). This mild climate makes Ballykelly an ideal destination for travelers seeking comfortable weather and pleasant outdoor activities.

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

The chart illustrates September temperature patterns in Ballykelly, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Ballykelly, September typically has an average temperature of 13°C (55°F), with highs reaching up to 22°C (72°F) and lows dropping to around 3°C (38°F).
JanFebMarAprMayJunJulAugSepOctNovDec424243465155585855514643
Data source: Temperature data for Ballykelly generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Ballykelly

In Ballykelly in September, the precipitation amount is 86 mm (3.4 in) distributed over 17 days.

September Precipitation Trends in Ballykelly

The chart displays monthly precipitation patterns in Ballykelly, 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 Ballykelly, September typically receives around 86 mm (3.4 inches) of precipitation spread over approximately 17 days.
JanFebMarAprMayJunJulAugSepOctNovDec75110955777959513086109106111
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Ballykelly

In Ballykelly 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 Ballykelly

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

In Ballykelly 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 Ballykelly.

Maximum UV Index Levels in Ballykelly for September

The chart shows the monthly maximum UV Index (UVI) for Ballykelly 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 Ballykelly typically reaches 5, which falls under the moderate exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec124568875321
Data source: Ballykelly 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 Ballykelly Compares to Other Months

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

This table compares monthly weather conditions in Ballykelly, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather6°C (42°F)75 mm (3.0 inches)87%low
February Weather6°C (42°F)110 mm (4.3 inches)86%low
March Weather6°C (44°F)95 mm (3.8 inches)86%moderate
April Weather8°C (47°F)57 mm (2.2 inches)85%moderate
May Weather11°C (51°F)76 mm (3.0 inches)82%high
June Weather13°C (56°F)95 mm (3.7 inches)84%very high
July Weather15°C (58°F)95 mm (3.7 inches)86%very high
August Weather14°C (58°F)130 mm (5.1 inches)86%high
September Weather13°C (55°F)86 mm (3.4 inches)88%moderate
October Weather10°C (51°F)109 mm (4.3 inches)89%moderate
November Weather8°C (46°F)106 mm (4.2 inches)90%low
December Weather6°C (44°F)111 mm (4.4 inches)86%low

Compare Ballykelly's Climate with Cities Worldwide