Last updated: March 17, 2025
In September, Bardsey, United Kingdom experiences a notable range of temperatures, peaking at a warm 27°C (81°F) and dipping to a cool 3°C (38°F), with an average of 13°C (57°F). This month is characterized by a noteworthy humidity level of 85%, contributing to a slightly damp atmosphere. Rainfall accumulates to 67 mm (2.6 in) over approximately 12 days, making it essential for visitors to prepare for variable weather conditions. Overall, September in Bardsey presents a blend of mild warmth and refreshing coastal breezes, perfect for outdoor exploration amid the picturesque surroundings.
In September, Bardsey, United Kingdom, experiences a gentle shift toward cooler autumn temperatures. With minimums settling around 3°C (38°F), the days start to cool down from the warmer summer months. The average temperature hovers at a comfortable 13°C (57°F), offering a mild reprieve for outdoor activities. At its peak, temperatures can reach up to 27°C (81°F), still allowing for those late-summer warmth moments. This blend of mildness and declining maximums marks a distinct transition, as the vibrant hues of autumn begin to replace the lush greens of summer, creating a picturesque backdrop for residents and visitors alike.
In September, Bardsey experiences a noteworthy shift in precipitation, receiving an average of 67 mm (2.6 in) over 12 days. This marks a decline from the wetter weeks of the summer months, such as August, which saw 78 mm (3.1 in) of rain. The moderate rainfall in September typically serves as a precursor to the heavier downpours of October, where averages increase significantly to 90 mm (3.5 in). Observing this trend, it's clear that while September still retains some of the summer's moisture, it begins to set the stage for autumn's more substantial rainfall, offering a mixture of lush landscapes and cooling temperatures.
In September, Bardsey experiences a notable shift as humidity levels rise to 85%, signaling the transition from the drier summer months. After dipping to 76% in July and 77% in August, this increase reflects the approach of autumn, which typically brings more moisture to the air. Interestingly, humidity levels remain relatively high throughout the fall, eventually climbing back to 90% by October and peaking again in the winter months. This pattern underscores Bardsey's maritime climate, characterized by persistent moisture, particularly as the seasons change from the warmth of summer to the cooler, wetter autumn.
As September rolls into Bardsey, the UV Index settles at 5, reflecting a moderate level of sun exposure risk. This marks a noticeable decline from the very high levels experienced in the height of summer, making it a more comfortable time for outdoor activities. With a burn time of approximately 30 minutes, it’s still important to be mindful of sun safety, especially during peak hours. This month beautifully bridges the transition from summer to autumn, inviting residents and visitors alike to enjoy the lingering warm days while staying sun-savvy. To stay informed about the UV levels throughout the year, check out the Bardsey UV Index.
UV Risk Categories
As summer gracefully transitions into autumn, September in Bardsey reveals a delightful bounty of sunshine, boasting 291 hours of radiant light. This month stands as a vibrant peak in the yearly cycle, following the intense brightness of July and August, which average around 396 and 359 hours, respectively. Although September shows a decline, the 291 hours still reflect a remarkable richness compared to the dreary winter months, where sunshine dips to merely 81 hours in January and 119 hours in November. The gradual descent from summer peaks to the softer glow of autumn illustrates not only the changing seasons but also the ever-present allure of Bardsey's coastline, inviting residents and visitors alike to bask in the golden hues before winter's embrace.
In Bardsey, United Kingdom, the likelihood of sunny weather in September sits at 25%, mirroring the relatively low chances seen in the preceding months. This figure is consistent with the overall trend observed as the summer months wane, where July spikes at 34% but gradually declines in August and September, suggesting a shift toward the cloudier days of autumn. Despite the promise of warmer weather in July and the beginnings of a vibrant autumn in October with its 21% chance, September retains that midpoint position, offering only a modest expectation of sunshine. As the seasons transition, those hoping for clear skies may find that September, while still pleasant, is not particularly sunny in Bardsey.
As September unfolds in Bardsey, United Kingdom, the daylight begins to wane, offering approximately 12 hours of light each day. Following the sun-drenched peak of summer, when July boasted 16 hours of sunlight, September marks a noticeable shift as evenings grow longer. This gradual reduction continues the trend set earlier in the year, starting from the brief 8 hours of daylight in January and peaking at 17 hours in June. The month serves as a gentle reminder of the changing seasons, bridging the gap between the lush, vibrant days of summer and the crisp, shorter days of autumn ahead. As the days shorten, nature prepares for a tranquil transition, casting a warm glow over the landscape that invites reflection and appreciation of the beauty in shifting light.
As September arrives in Bardsey, United Kingdom, the wind whispers tales of transition with an average speed of 3.5 m/s (8 mph), mirroring the gentle breezes of August. This month's winds signify a subtle shift, as they remain notably calmer compared to the gustier spring months, where speeds frequently reached 4.7 m/s (10 mph). The tranquil September breezes serve as a prelude to the more robust winds of autumn, which begin to pick up again in October at 4.8 m/s (11 mph). Overall, September's winds embody a serene pause, perfectly capturing the essence of early autumn as nature prepares for the upcoming seasonal change.
The weather in Bardsey 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 Bardsey and find detailed weather information for every month.
In comparing the weather of September and January, we see a notable shift in temperatures and conditions. September boasts a broader range of temperatures, with a minimum of 3°C (38°F), an average of 13°C (57°F), and a maximum of 27°C (81°F), all accompanied by relatively lower humidity at 85%. Rainfall is moderate, with 67 mm (2.6 in) spread over 12 days.
In contrast, January brings chillier weather, with temperatures dropping to a minimum of -5°C (24°F), an average of 4°C (40°F), and a maximum of 14°C (57°F). The month sees slightly less precipitation at 54 mm (2.1 in) over 10 days, but the humidity remains high at 90%. For a closer look at what to expect, check out Bardsey weather in January.
In comparing the weather between September and February, September typically enjoys milder temperatures, ranging from a minimum of 3°C (38°F) to a maximum of 27°C (81°F), with an average of 13°C (57°F). The humidity is relatively high at 85%, and there is a moderate amount of precipitation, totaling 67 mm (2.6 in) over about 12 days. In contrast, February experiences colder conditions, with temperatures ranging from a minimum of -6°C (22°F) to a maximum of 17°C (63°F) and an average of 5°C (41°F). This month generally sees higher precipitation levels at 81 mm (3.2 in) spread over 14 days, along with slightly higher humidity at 88%. For more details on February weather, you can refer to Bardsey weather in February.
September and March present contrasting weather patterns, reflecting the transition from summer to autumn and winter to spring, respectively. In September, temperatures range from a minimum of 3°C (38°F) to a pleasant average of 13°C (57°F), peaking at 27°C (81°F). The month experiences moderate precipitation of 67 mm (2.6 in) over 12 days, with humidity at a relatively high 85%. In contrast, March has much colder temperatures, with a minimum of -6°C (22°F) and an average of 6°C (44°F), reaching a maximum of 19°C (66°F). Precipitation slightly increases to 74 mm (2.9 in) over 14 days, and humidity remains high at 86%. For a closer look at what to expect in March, check out Bardsey weather in March.
When comparing the weather in September and April, we see distinct differences in temperature and precipitation. September experiences milder temperatures, with averages ranging from a minimum of 3°C (38°F) to a maximum of 27°C (81°F), while April is cooler, with temperatures ranging from -3°C (27°F) to a maximum of 23°C (74°F). In terms of precipitation, September tends to be wetter, receiving 67 mm (2.6 in) over about 12 days, compared to April's 39 mm (1.5 in) over 8 days. Both months have high humidity, with September at 85% and April slightly lower at 84%. For more insights on weather conditions during April, you can check Bardsey weather in April.
In comparing the weather of September and May, September tends to be slightly warmer overall, with average temperatures reaching around 13°C (57°F) compared to May's average of 11°C (53°F). While September can feature maximum temperatures up to 27°C (81°F), May's highs peak at 25°C (77°F). Both months experience similar levels of precipitation, with September recording 67 mm (2.6 in) and May slightly less at 61 mm (2.4 in), although they both see rainfall on approximately 12 days. Additionally, September has a higher humidity level at 85%, compared to May's 80%. For more details on the specific weather conditions, check Bardsey weather in May.
In comparing the weather between September and June, both months display similar maximum temperatures, with June peaking at 27°C (82°F) and September at 27°C (81°F). However, September tends to have slightly cooler minimum temperatures, averaging around 3°C (38°F) compared to June's 5°C (41°F). Precipitation is more abundant in June, with 81 mm (3.2 in) compared to September's 67 mm (2.6 in), although both months experience rain on approximately 12 days. Humidity remains relatively high in both months, with September at 85% and June at 81%. For further details, you can check Bardsey weather in June.
In comparing the weather of September and July, we see notable differences in temperature and humidity. September experiences cooler temperatures with a minimum of 3°C (38°F) and an average of 13°C (57°F), while July boasts warmer conditions, featuring a minimum of 7°C (45°F) and an average of 16°C (62°F). The maximum temperature in July also significantly exceeds that of September, reaching up to 33°C (92°F) compared to September's maximum of 27°C (81°F). Precipitation levels are relatively similar, with September receiving 67 mm (2.6 in) over 12 days and July slightly higher at 75 mm (2.9 in) across 13 days. While both months have considerable humidity, September's humidity is higher at 85%, compared to July's 76%. For a detailed overview of July's weather, you can visit Bardsey weather in July.
In comparing the weather of September and August, September tends to be cooler with a minimum temperature of 3°C (38°F) and an average of 13°C (57°F), while August is warmer with a minimum of 7°C (45°F) and an average of 16°C (61°F). The maximum temperatures in August also peak higher at 30°C (87°F) compared to September’s maximum of 27°C (81°F). Precipitation levels are slightly lower in September with 67 mm (2.6 in) over 12 days, compared to August's 78 mm (3.1 in) over 14 days. Additionally, September experiences higher humidity at 85%, while August's humidity is more comfortable at 77%. For a detailed look at the weather specifics in August, check out Bardsey weather in August.
In comparing the weather between September and October, we see a notable shift in temperatures and precipitation. September boasts a milder average temperature of 13°C (57°F), with maximums reaching up to 27°C (81°F), while October experiences a cooler average of 11°C (51°F) and maximums of 21°C (71°F). Additionally, October sees an increase in precipitation, totaling 90 mm (3.5 in) over 15 days, compared to September's 67 mm (2.6 in) over 12 days. Humidity also rises slightly in October, reaching 90% compared to September's 85%. For more detailed insights, you can check Bardsey weather in October.
September and November present contrasting weather patterns. In September, temperatures range from a mild 3°C (38°F) at night to a warm 27°C (81°F) during the day, with an average of 13°C (57°F). The month sees 67 mm (2.6 in) of precipitation spread over 12 days, accompanied by relatively high humidity at 85%. In contrast, November is considerably cooler, with nighttime temperatures dipping to -3°C (27°F) and daytime highs reaching only 17°C (62°F), resulting in an average temperature of 7°C (45°F). The precipitation remains slightly lower at 62 mm (2.4 in) but occurs over a slightly greater number of days, 13 in total, and humidity rises to 92%. For more detailed insights, you can check Bardsey weather in November.
In September, temperatures range from a mild 3°C (38°F) at night to a warm 27°C (81°F) during the day, with an average of 13°C (57°F). The month typically sees about 67 mm (2.6 in) of precipitation over 12 days, accompanied by a high humidity level of 85%. In contrast, December brings much cooler weather, with temperatures dropping to a minimum of -5°C (24°F) and averaging only 5°C (42°F). Daytime highs peak at 13°C (57°F). Precipitation increases to 79 mm (3.1 in) spread across 14 days, along with a slight uptick in humidity at 90%. For more details on December weather, visit Bardsey weather in December.
As summer fades and autumn makes its entrance, September in Bardsey brings a notable shift in weather. While temperatures can reach a comfortable high of 27°C, the average dips to a cooler 13°C, hinting at the seasonal transition. This month is characterized by increased humidity at 85% and an uptick in rainfall, with 67 mm of precipitation spread over 12 days—significantly marking it as a wetter period compared to the drier summer months. Therefore, if you’re planning a visit, be prepared for the blend of mild warmth and refreshing showers that make September truly unique. For a deeper look at Bardsey’s weather patterns, explore Bardsey Climate.