September Weather in Bushmills, United Kingdom

Last updated: March 17, 2025

In September, the picturesque town of Bushmills, United Kingdom experiences a mild climate characterized by an average temperature of 14°C (57°F), with highs reaching up to 17°C (63°F) and lows dipping to around 9°C (49°F). This month is notably humid, boasting an impressive humidity level of 88% that enhances the lush landscapes of the region. However, visitors should be prepared for rain, as September witnesses 112 mm (4.4 in) of precipitation over approximately 19 days. Whether you're exploring the iconic Giant's Causeway or enjoying local whiskey distilleries, Bushmills offers a charming yet wet atmosphere this time of year.

September Temperature in Bushmills

In September, Bushmills, United Kingdom, experiences a subtle transition as summer gently gives way to autumn. The temperatures range from a comfortable 9°C (49°F) at night to an average of 14°C (57°F) during the day, peaking at 17°C (63°F). This marks a noticeable rise from the chill of earlier months, notably with warmer nights compared to July and August, while still reflecting the gradual cooling that precedes the upcoming autumn months. As the days grow shorter and the air crispier, September offers a delightful blend of warmth and fresh breezes, making it an ideal time for those seeking to explore the scenic beauty of the region. The consistent moderate temperatures invite a cozy atmosphere, perfect for enjoying the stunning landscapes and rich heritage that Bushmills has to offer.

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

The chart illustrates September temperature patterns in Bushmills, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec454444465053565756534946
Data source: Temperature data for Bushmills 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 Bushmills

September in Bushmills, United Kingdom, offers a transition into the wetter autumn months, characterized by 112 mm (4.4 in) of precipitation over 19 days. This amount is slightly lower than August’s 133 mm (5.2 in), although the frequency of rainfall remains high, reflecting the area's reputation for frequent showers. This trend suggests that while summer nights may be pleasantly dry, the onset of fall brings a return to more consistent rain patterns. As October approaches, the anticipation of even heavier rains is palpable, with precipitation expected to rise to 157 mm (6.2 in), confirming that the lush landscapes of Northern Ireland thrive on this seasonal moisture.

September Precipitation Trends in Bushmills

The chart displays monthly precipitation patterns in Bushmills, 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.
JanFebMarAprMayJunJulAugSepOctNovDec113133106506999105133112157162167
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Bushmills

In September, Bushmills experiences a slight uptick in humidity, reaching 88%—the highest level since April. This trend marks a continuation of the region's characteristic dampness, as humidity remains consistently high throughout the late summer and early autumn months. As the year transitions into October, the moisture levels climb even further to 89%, suggesting that the cooler seasons are not only bringing crisp air but also retaining that familiar coastal dampness. With a year-round average hovering between 85% and 90%, it’s clear that the lush landscapes around Bushmills thrive in these humid conditions, enhancing the area's natural beauty and vibrant ecosystem.

September Average Humidity in Bushmills

This chart illustrates the average monthly humidity levels in Bushmills, with September's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how September's humidity levels compare to other months.
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 Bushmills

In September, Bushmills experiences a moderate UV Index of 5, signaling a shift as summer wanes. After the intense sunlight of June and July, where the UV levels reached a peak of 8, the lingering warmth of early autumn still calls for caution, with a burn time of 30 minutes. This month typically showcases a decline in ultraviolet exposure, reflecting a gradual transition towards lower UV levels as we move into the cooler months ahead. As the sun begins to set earlier and the days grow shorter, it's crucial to stay vigilant about sun protection, especially during midday hours. For more detailed insights on the UV Index throughout the year, check Bushmills UV Index.

Maximum UV Index Levels in Bushmills for September

The chart shows the monthly maximum UV Index (UVI) for Bushmills 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.
JanFebMarAprMayJunJulAugSepOctNovDec123568865311
Data source: Bushmills 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.

September Sunshine in Bushmills

As summer fades into autumn, September in Bushmills offers a delightful transition marked by 289 hours of sunshine. While this figure reflects a noticeable decline from the sun-soaked heights of July and August, it still stands as a significant improvement over the drearier months of late autumn and winter. Historically, September sees a gentle tapering off of brightness, hinting at the cozy embrace of fall. With slightly less sunshine than the peak summer months, this time of year provides the perfect opportunity to enjoy the breathtaking landscapes and rich history of the area, all under a pleasantly golden sky. As the days shorten, it’s a reminder of the ever-changing seasons that make Bushmills a captivating place year-round.

Monthly Sunshine Duration in Bushmills: September Highlighted

The September sunshine duration represents the total number of hours Bushmills experiences direct sunlight during the month of September, excluding cloudy or obstructed periods. This chart compares the sunshine duration of September with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec73h148h211h325h408h396h410h361h289h226h118h83h
Data source: Bushmills September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Bushmills During September

In Bushmills, United Kingdom, September embodies a transitional blend of summer's warmth and autumn's crispness, yet the likelihood of sunny weather during this month remains modest at 23%. This percentage shows a slight decline compared to the sunnier spring months, notably April at 44% and May at 37%. As summer fades, the reliable shine of July and August, both hovering around 25%, gives way to a more unpredictable September. This trend continues into the fall as the chance of sun dwindles further with October's low of 16%. While sunny days are not guaranteed, September still offers an enchanting backdrop for exploring the beautiful landscapes of Bushmills, with the potential for uplifting sunshine amidst the changing seasons.

Percentage of Sunny Days in September in Bushmills

The chart illustrates the percentage of sunny days in Bushmills throughout the year, with September highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Bushmills experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec24%26%16%44%37%24%25%20%23%16%17%14%
Data source: Bushmills September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Bushmills in September

As summer gracefully transitions into autumn, September in Bushmills, United Kingdom, witnesses a soft yet noticeable decline in daylight, offering around 12 hours of sun. This month's daylight hours follow the peak of 17 hours in June, serving as a gentle reminder of the fading warmth. Following the vibrant days of August, which enjoyed 14 hours, September's daylight signals a shift towards the cozy embrace of shorter days ahead, leading into the crispness of October with just 10 hours. This steady decrease highlights how summer's abundance gives way to autumn's charm, painting a landscape that is both enchanting and reflective.

Average Daylight Hours in Bushmills for September

The chart illustrates the variation in daylight duration in Bushmills throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec7h 49m9h 39m11h 53m14h 10m16h 12m17h 18m16h 42m14h 52m12h 39m10h 23m8h 20m7h 12m
Data source: Bushmills daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Bushmills

As autumn begins to whisper through the streets of Bushmills, September brings a modest breeze with an average wind speed of 5.7 m/s (13 mph). This marks a slight increase from the summer months, where wind speeds dipped to their lowest, highlighting a transition toward the more vigorous conditions typical of autumn. Following an uncharacteristically calm July and August, September's winds reflect a resurgence, yet they remain gentle enough to allow for pleasant strolls along the scenic coastline. As the year progresses, a pattern emerges: the wind speeds begin to climb again in October and November, suggesting that the area prepares for the more robust gusts of late autumn and winter.

Average September Wind Speed in Bushmills

The chart displays monthly wind speed patterns in Bushmills, with values for each month shown alongside September's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how September's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec8.210.97.86.16.55.74.04.75.7 m/s8.09.88.8
Data source: Bushmills September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Bushmills Compares to Other Months

The weather in Bushmills changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of September's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Bushmills and find detailed weather information for every month.

In September, the weather tends to be milder, with average temperatures ranging from a low of 9°C (49°F) to a high of 17°C (63°F), accompanied by 112 mm (4.4 in) of precipitation over 19 days and a humidity level of 88%. In contrast, January brings cooler conditions, featuring average temperatures between 2°C (36°F) and 13°C (56°F). Although the precipitation slightly increases to 113 mm (4.5 in) over 17 days, the humidity remains relatively similar at 87%. For more detailed information on January weather, you can check Bushmills weather in January.

September and February exhibit notable differences in weather conditions. In September, temperatures range from a minimum of 9°C (49°F) to a maximum of 17°C (63°F), with an average of 14°C (57°F), creating a mild atmosphere. The month sees substantial precipitation, totaling 112 mm (4.4 in) over 19 days, alongside a high humidity level of 88%. In contrast, February is significantly cooler, with temperatures dropping to a minimum of 1°C (34°F) and averaging 7°C (44°F), peaking at 12°C (54°F). It experiences slightly higher precipitation at 132 mm (5.2 in) over 18 days, with humidity remaining relatively close at 86%. For a detailed look at the weather patterns in February, check out Bushmills weather in February.

When comparing the weather in September and March, there are notable differences in temperature and conditions. September generally enjoys milder temperatures, with a minimum of 9°C (49°F) and an average around 14°C (57°F), while March experiences much cooler temperatures, dropping to a minimum of -1°C (31°F) and an average of 7°C (45°F). Both months see a similar amount of precipitation, with September receiving 112 mm (4.4 in) over 19 days and March accumulating 106 mm (4.2 in) over 17 days. However, September tends to be slightly more humid at 88% compared to March's 86%. For a closer look at March weather specifics, you can check Bushmills weather in March.

September weather is generally milder and wetter compared to April. With average temperatures ranging from a minimum of 9°C (49°F) to a maximum of 17°C (63°F), September experiences higher warmth than April, which has an average temperature between 2°C (36°F) and 13°C (56°F). Additionally, September sees more precipitation, with 112 mm (4.4 in) over 19 days, while April receives 50 mm (2.0 in) over only 11 days. Despite the slight difference in humidity, with September at 88% and April at 85%, the overall feel is that September is a more humid and rainy month than April. For a detailed look at April's weather, you can check Bushmills weather in April.

When comparing the weather in September and May, September typically presents milder temperatures, with averages around 14°C (57°F) and a maximum of 17°C (63°F), while May remains cooler with an average of 10°C (50°F) and a maximum of 16°C (60°F). September also tends to be wetter, experiencing about 112 mm (4.4 in) of precipitation over 19 days, compared to May's 69 mm (2.7 in) over just 12 days. Additionally, humidity levels are slightly higher in September at 88%, making the air feel heavier compared to May's 82%. For a closer look at what to expect during May, you can visit Bushmills weather in May.

In comparing September and June weather, both months see similar maximum temperatures, with highs reaching up to 17°C (63°F). However, September boasts a slightly warmer average temperature of 14°C (57°F) compared to June's average of 12°C (54°F). Humidity levels are notably higher in September at 88%, versus June's 84%, which contributes to a more muggy feel as the summer ends. Precipitation is more frequent in September, with 112 mm (4.4 in) of rainfall over 19 days, compared to June's 99 mm (3.9 in) across 16 days. For more specific details on June weather in Bushmills, you can check Bushmills weather in June.

In comparing September and July weather, it is clear that September tends to be slightly cooler, with average temperatures ranging from a minimum of 9°C (49°F) to a maximum of 17°C (63°F), whereas July sees temperatures from a minimum of 11°C (52°F) to a maximum of 19°C (66°F). Additionally, September experiences more precipitation, with 112 mm (4.4 in) over 19 days compared to July's 105 mm (4.1 in) over 16 days. Humidity is also slightly higher in September at 88% compared to July’s 86%. For further details on July weather in Bushmills, you can check Bushmills weather in July.

In comparing the weather between September and August, September tends to be slightly cooler with average temperatures ranging from a minimum of 9°C (49°F) to a maximum of 17°C (63°F), while August sees warmer conditions with a minimum of 11°C (51°F) and a maximum of 18°C (65°F). Precipitation levels are somewhat similar, with September receiving 112 mm (4.4 in) over 19 days, compared to August's 133 mm (5.2 in) over 20 days. Humidity is also slightly higher in September at 88%, as opposed to August's 86%. For more detailed information, you can visit Bushmills weather in August.

In September, temperatures begin to cool down with averages around 14°C (57°F), peaking at 17°C (63°F), while the month experiences 112 mm (4.4 in) of rain over 19 days and maintains a humidity level of 88%. By October, the weather continues this downward trend, with an average temperature of 12°C (53°F) and a maximum of 16°C (62°F), but sees an increase in precipitation to 157 mm (6.2 in) over 24 days and a slightly higher humidity of 89%. For more specifics on the weather during this transitional month, you can check Bushmills weather in October.

In comparing the weather between September and November, it is evident that November experiences cooler temperatures overall, with average highs of 14°C (58°F) compared to September's warmer average high of 17°C (63°F). The minimum temperatures also drop more significantly in November, reaching a low of 4°C (40°F) compared to September's 9°C (49°F). Precipitation is more abundant in November, with 161 mm (6.4 in) falling across 23 days, in contrast to September's 112 mm (4.4 in) spread over 19 days. Furthermore, humidity levels are slightly higher in November at 90%, which contributes to a more damp and chilly atmosphere. For more specific details about the weather patterns in November, you can visit Bushmills weather in November.

In September, temperatures are generally milder, with an average of 14°C (57°F) and a maximum reaching up to 17°C (63°F), while December sees cooler conditions with an average of 8°C (47°F) and a maximum of only 12°C (55°F). Precipitation is also more frequent in December, with 167 mm (6.6 in) falling over 23 days compared to the 112 mm (4.4 in) over 19 days in September. Humidity levels remain relatively high in both months, at 88% in September and slightly lower at 86% in December. For more specific details about weather conditions during December, you can check Bushmills weather in December.

Compare Bushmills's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Bushmills

As summer fades, September in Bushmills brings a notable shift in weather, marked by cooler temperatures and increased moisture. The average temperature starts to dip, inviting a refreshing crispness to the air, while rain becomes a more frequent visitor, with nearly two-thirds of the month experiencing precipitation. This transition to higher humidity levels adds to the distinct autumnal feel, setting the stage for the vibrant fall foliage. For those planning to visit or simply curious about what to expect, detailed insights on this seasonal change can be found at Bushmills Climate.