Last updated: March 17, 2025
In Llan Ffestiniog, United Kingdom, September showcases a diverse range of weather conditions, with temperatures reaching a maximum of 27°C (81°F) and an average of 13°C (55°F). As autumn approaches, the minimum temperature can dip to 1°C (35°F), highlighting the region's variable climate. This month is characterized by significant precipitation, totaling 126 mm (5.0 in) over 16 days, resulting in an average humidity level of 85%. Visitors can expect a mixture of light rain and cooler days, making September a transitional yet picturesque time to experience the natural beauty of Llan Ffestiniog.
In September, Llan Ffestiniog experiences a gentle transition into autumn, featuring minimum temperatures around 1°C (35°F) and comfortable average highs peaking at 27°C (81°F). This marks a gradual decline from the summer warmth, as the average temperature settles at 13°C (55°F)—a reminder of the cooler months ahead. With maximum temperatures still reminiscent of summer, outdoor activities remain inviting, making it an ideal time to enjoy the stunning landscapes before the chill sets in. Overall, September strikes a harmonious balance, showcasing both the lingering warmth of summer and the early whispers of fall's embrace.
September in Llan Ffestiniog sees a notable shift in precipitation patterns as the summer months transition into autumn. With an average rainfall of 126 mm (5.0 in) over 16 days, September's weather can be described as moderately wet, reflecting a decrease from the dampness of August, which recorded 153 mm (6.0 in) across 21 days. This month heralds a return to more consistent rainfall as the region prepares for the typically wetter months ahead, including October's peak of 163 mm (6.4 in). The gradual rise in precipitation days and totals post-summer underscores Llan Ffestiniog's climate, characterized by a persistent wetness that often surprises visitors.
In September, Llan Ffestiniog experiences a moderate humidity level of 85%, marking a slight uptick from the drier months of July and August, which recorded 78% and 79% respectively. This increase hints at the onset of autumn as the air absorbs moisture in anticipation of the wetter months ahead. Throughout the year, humidity levels generally trend higher as they peak in the colder months, highlighting the region’s characteristic dampness. From October to December, humidity climbs back to 90% or more, enveloping the landscape in the lush, green hues that define this picturesque area of the United Kingdom.
In September, Llan Ffestiniog experiences a moderate UV Index of 5, signaling a shift from the intense rays of summer to the milder conditions of early autumn. With a burn time of approximately 30 minutes, residents and visitors alike should remain mindful of sun exposure, particularly during midday hours. This month marks a gentle decline from the high UV Index observed in August (7), demonstrating a transition from peak sun strength. As the days grow shorter, it’s an excellent time to enjoy outdoor activities while still being cautious about skin protection. For more insights and to plan your sunny adventures, check the comprehensive data available at Llan Ffestiniog UV Index.
UV Risk Categories
September in Llan Ffestiniog is a delightful transition as the summer sun begins to wane, offering 313 hours of sunshine—an impressive amount that still holds its own against the earlier months of the year. Following the peak of 421 hours in July and a robust 385 hours in August, September showcases a dip, yet remains significantly brighter than the winter months, such as November and December, which see only 124 and 106 hours of sunlight, respectively. This pattern of declining daylight hours reflects the natural rhythm of the seasons, inviting both locals and visitors to relish the lingering warmth and beauty of early autumn before the days grow shorter and the chill sets in.
In the picturesque village of Llan Ffestiniog, September brings a 19% chance of sunny weather, which is a modest dip compared to the warmer months of June (25%) and July (34%). This decrease marks a trend of diminishing sunny days as autumn approaches, with April showcasing the highest likelihood of sunshine at 43%. Interestingly, while September offers more chances for sunshine than the cold depths of winter, where the likelihood plummets to 14-16%, it's evident that this fall month is less favorable for sun-seekers. As the seasons shift, the weather patterns remind us that prime sunny days arrive earlier in the year, making late summer and early fall a fleeting treat in this charming part of the UK.
As summer fades in Llan Ffestiniog, September brings a gentle transition in daylight duration, offering approximately 12 hours of sunlight each day. This reflects a gradual decrease from the long, sun-drenched days of July and August, which boast a maximum of 16 hours. Following the peak summer months, September’s daylight serves as a warm reminder of the autumn season ahead, with hours slowly dwindling towards the 10 hours of daylight typical in October. This natural ebb and flow of daylight not only marks the changing of the seasons but also invites residents to enjoy the crisp air and vibrant landscapes that characterize early fall.
In Llan Ffestiniog, the winds of September whisper a gentle lullaby, featuring an average speed of 2.9 m/s (7 mph) that evokes a sense of calm in contrast to the breezy summer months. This serene gust is part of a broader trend of dwindling wind speeds from the earlier, more blustery summer, where July recorded its softest breath at 2.5 m/s (6 mph). As autumn approaches, the winds gain momentum again in October, rising to 4.8 m/s (11 mph), suggesting a transitional phase. Overall, September marks a sweet spot of tranquility before the winds pick up, embodying the delicate balance nature strikes as seasons change.
The weather in Llan Ffestiniog 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 Llan Ffestiniog and find detailed weather information for every month.
September and January present notably different weather patterns. In September, temperatures range from a minimum of 1°C (35°F) to a comfortable maximum of 27°C (81°F), with an average of 13°C (55°F). The month experiences a higher level of precipitation, totaling 126 mm (5.0 in) over 16 days, and humidity levels are relatively high at 85%. In contrast, January sees colder temperatures, with a minimum of -4°C (25°F) and a maximum that barely reaches 13°C (55°F), averaging only 5°C (41°F). The precipitation in January is slightly less, at 103 mm (4.0 in) over 15 days, with humidity levels increasing to 89%. For more details about the weather in January, visit Llan Ffestiniog weather in January.
September and February present contrasting weather experiences. In September, temperatures range from a minimum of 1°C (35°F) to a maximum of 27°C (81°F), with an average of 13°C (55°F). The month sees about 126 mm (5.0 in) of precipitation over 16 days, and humidity levels are relatively high at 85%. Meanwhile, February exhibits cooler temperatures, with a minimum of -5°C (22°F), an average of 5°C (41°F), and a maximum of 18°C (65°F). This month tends to be wetter, recording approximately 147 mm (5.8 in) of precipitation over 17 days and slightly higher humidity at 88%. For more detailed information, you can check Llan Ffestiniog weather in February.
In comparing September and March weather, we see notable differences in temperature and precipitation patterns. September features milder temperatures, with a minimum of 1°C (35°F) and an average of 13°C (55°F), while March is cooler, starting at a minimum of -7°C (20°F) and averaging 6°C (43°F). Both months experience significant rainfall, but March has slightly higher precipitation at 141 mm (5.6 in) over 18 days compared to September's 126 mm (5.0 in) over 16 days. Humidity levels remain quite high in both months, with September at 85% and March at 86%. For more detailed insights, you can visit Llan Ffestiniog weather in March.
When comparing the weather in September and April, we find notable differences in temperature and precipitation. September tends to be milder, with temperatures ranging from a chilly 1°C (35°F) at night to a warm 27°C (81°F) during the day, while April experiences cooler temperatures, with lows of -3°C (27°F) and highs of 22°C (72°F). In terms of precipitation, September is notably wetter, receiving 126 mm (5.0 in) over about 16 days compared to April's 65 mm (2.5 in) across 12 days. Humidity levels are similarly high in both months, hovering around 84-85%, making both periods feel quite damp. For those interested in more detailed information about April weather specifically, you can check Llan Ffestiniog weather in April.
When comparing the weather in September and May, it is clear that September tends to be warmer overall. The minimum temperature in September is slightly higher at 1°C (35°F), with an average of 13°C (55°F) compared to May's minimum of -1°C (31°F) and average of 11°C (51°F). Additionally, September boasts a maximum temperature of 27°C (81°F), while May's peak reaches 26°C (79°F). Precipitation is more frequent in September, occurring on 16 days with a total of 126 mm (5.0 in), in contrast to May, which sees 14 days of rain and accumulates 88 mm (3.5 in). Humidity levels are also higher in September at 85%, compared to May's 79%. For a more detailed look at May's weather, you can visit Llan Ffestiniog weather in May.
When comparing the weather in September and June, we see distinct differences in temperature and precipitation. September experiences slightly cooler temperatures, ranging from a minimum of 1°C (35°F) to a maximum of 27°C (81°F), with an average temperature of 13°C (55°F). In contrast, June starts warmer with a minimum of 5°C (41°F) and peaks at 28°C (82°F), maintaining a similar average of 14°C (57°F). Precipitation levels are also notable; September sees 126 mm (5.0 in) of rainfall over 16 days, while June has less, totaling 102 mm (4.0 in) over 14 days. Humidity is slightly higher in September at 85%, compared to June's 81%. For more specific insights, you can check the detailed climate information at Llan Ffestiniog weather in June.
Comparing the weather in September and July reveals notable differences. In September, the temperatures range from a chilly minimum of 1°C (35°F) to a warm maximum of 27°C (81°F), with an average of 13°C (55°F). This month experiences more precipitation, totaling 126 mm (5.0 in) across 16 days, and higher humidity at 85%. In contrast, July's temperatures are milder, with a minimum of 6°C (42°F) and a maximum of 28°C (83°F), averaging at 15°C (60°F). July sees less rain, accumulating 98 mm (3.9 in) over 14 days, and lower humidity at 78%. For more specifics on July weather patterns, you can refer to Llan Ffestiniog weather in July.
In comparing the weather of September to August, it is evident that September experiences a wider range of temperatures, with minimums dipping to 1°C (35°F) compared to August's cooler low of 6°C (43°F). The average temperatures in both months remain similar, around 13°C (55°F) in September versus 15°C (59°F) in August, while the maximum temperatures align closely at 27°C (81°F) for September and 27°C (80°F) for August. Precipitation is slightly higher in August at 153 mm (6.0 in), falling over 21 days, while September sees 126 mm (5.0 in) over 16 days, suggesting that September may offer drier periods compared to its predecessor. Additionally, humidity levels in September rise to 85%, compared to 79% in August, indicating a potentially more muggy climate. For further details, you can check the specific conditions in Llan Ffestiniog weather in August.
In comparing the weather of September and October, we see a noticeable shift in temperatures and precipitation patterns. September enjoys a mild average temperature of 13°C (55°F) with highs reaching up to 27°C (81°F), while October features cooler conditions, with an average of 10°C (50°F) and maximums around 21°C (69°F). Precipitation also increases in October, with 163 mm (6.4 in) expected over 19 days, compared to September's 126 mm (5.0 in) over 16 days. Additionally, humidity levels rise slightly from 85% in September to 90% in October, contributing to a more damp feel as the month progresses. For detailed information, you can check Llan Ffestiniog weather in October.
September and November present stark contrasts in weather, reflecting the transition from late summer to autumn. In September, temperatures range from a mild 1°C (35°F) at night to a warm 27°C (81°F) during the day, with an average of 13°C (55°F). However, the month experiences significant precipitation, totaling 126 mm (5.0 in) over 16 days and a humidity level of 85%. In contrast, November brings cooler temperatures, with nighttime lows dropping to -2°C (29°F) and daytime highs peaking at 14°C (58°F), averaging around 7°C (45°F). Precipitation slightly increases to 133 mm (5.2 in), occurring over 19 days, and humidity rises to 91%. For more specific details about the weather in Llan Ffestiniog during this month, check out Llan Ffestiniog weather in November.
September and December present stark contrasts in weather patterns. In September, temperatures range from a low of 1°C (35°F) to a comfortable high of 27°C (81°F), with an average of 13°C (55°F). The month sees about 126 mm (5.0 in) of precipitation spread over 16 days, and humidity hovers around 85%. In contrast, December experiences colder temperatures, with a minimum of -6°C (21°F) and a maximum of 12°C (54°F), averaging just 6°C (43°F). Precipitation increases to 165 mm (6.5 in), falling on 20 days, and humidity rises slightly to 89%. For more details, check out Llan Ffestiniog weather in December.
As September unfolds in Llan Ffestiniog, it brings a noticeable transition from the warmth of summer to the crispness of autumn. With maximum temperatures occasionally reaching a balmy 27°C, the month still offers pleasant days, although the average dips to a cooler 13°C, reminding us that winter is on the horizon. Rainfall is common, with about half the month seeing precipitation, resulting in a lush landscape courtesy of 126 mm of rain over 16 days. The high humidity of 85% humbles even the sunniest of days, creating a unique atmosphere often absent in the drier summer months. For a more detailed look at seasonal variations, check out Llan Ffestiniog Climate.