Last updated: March 17, 2025
September in Colwyn Bay, United Kingdom, presents a dynamic weather pattern characterized by a maximum temperature reaching 27°C (81°F), while the average temperature settles around a mild 14°C (57°F). Amidst this variability, the minimum temperature can dip to 3°C (37°F), highlighting the crispness of early autumn. Rainfall is prevalent, with an average precipitation amount of 96 mm (3.8 in) spread over 15 days, contributing to a rather humid atmosphere, averaging 85% humidity. This combination of warmth and wetness offers a unique yet temperamental climate, perfect for those who thrive in unsettled weather.
In September, Colwyn Bay experiences a delightful transition as summer gently gives way to autumn. With temperatures ranging from a mild 3°C (37°F) at night to a pleasant 27°C (81°F) during the day, the month boasts an average temperature of 14°C (57°F), making it an ideal time for outdoor activities along the coast. This period signifies a subtle drop from the warmth of July and August, yet remains comfortably warm, inviting visitors to explore the stunning landscapes. As the days gradually shorten, September’s moderate climate offers a balanced blend of lingering summer warmth and the crispness that characteristic of autumn, ensuring a refreshing yet enjoyable experience in this charming seaside town.
In September, Colwyn Bay experiences a notable continuation of its wet season, with precipitation reaching 96 mm (3.8 in), matching the rainfall levels of August. This month typically sees precipitation on about 15 days, providing a steady supply of moisture that nurtures the lush landscapes this charming coastal town is known for. The consistency in rainfall during late summer hints at an unyielding pattern, as September's totals align closely with the preceding months, reflecting the area's overall tendency for wet weather as it transitions into autumn. As the year progresses, a gradual increase in precipitation is observed leading into October, suggesting that the peaceful rhythms of seaside life are often accompanied by the soft patter of rain during this time of year.
In September, Colwyn Bay experiences a notable shift in humidity levels, with an average of 85%. This slight increase from the summer months reflects a gradual transition into autumn, where the humidity begins to rise again after a dip during July and August. Notably, September's humidity sits comfortably between the lower levels of summer and the higher readings typical of the upcoming colder months. As temperatures cool, the lingering oceanic influence becomes more pronounced, leading to a refreshing but damp atmosphere that characterizes the start of autumn in this coastal town. The trend from August to September signals the onset of a season where moisture levels consistently creep upward, paving the way for the 90% humidity typically seen in October and beyond.
In September, Colwyn Bay experiences a UV Index of 5, placing it in the moderate exposure category with a burn time of approximately 30 minutes. This marks a shift from the high UV levels of summer, which peaked in June and July with an index of 8 and a significantly reduced burn time of just 15 minutes. As temperatures begin to cool, UV levels drop, making September a comfortable month for outdoor activities while still reminding sun-seekers to take precautions. Thus, while the days grow shorter, it's important to stay vigilant about sun protection during this transitional month. For more details about UV trends in the area, visit Colwyn Bay UV Index.
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September in Colwyn Bay brings a delightful transition into autumn, showcasing 297 hours of sunshine—a significant decline from the sun-drenched summer months yet still robust enough to enjoy outdoor activities. Following the peak of 405 hours in July, sunshine hours gradually recede through August and September, hinting at the shorter days ahead. This downward trend continues into October, where the golden glow of summer begins to wane, leaving behind a gentle reminder of the vibrant warm days. As the leaves turn and cooler breezes set in, September remains a beautiful chapter in the yearly cycle, marking a perfect blend of lingering warmth and the subtle onset of fall.
In Colwyn Bay, United Kingdom, September brings a 20% chance of sunny weather, mirroring the sunless tendencies seen in the earlier months of the year. This marks a noticeable dip from the relatively brighter April, which enjoys a sunny likelihood of 46%. Following the summer months, where July stands out with a 35% chance, September does not carry forward that optimism. As autumn sets in, the trend shows that the likelihood of sunshine decreases further into the fall, dropping to 18% in October. This pattern underscores the region’s transition away from the summer warmth, suggesting that while occasional sun may grace September, residents should prepare for more overcast days ahead.
As summer fades into autumn, September brings a gentle transition in daylight hours in Colwyn Bay, UK. With 12 hours of daylight, the month marks a noticeable decline from the peak of 16 hours in June and July, while still providing ample light compared to the more wintry months ahead. This gradual reduction reflects the shifting seasons, as the days become shorter and the nights lengthen towards October's 10 hours. As sunlight wanes, the vibrant hues of autumn foliage emerge, inviting residents and visitors alike to savor the beautiful blend of day and twilight that September offers.
As September unfolds in Colwyn Bay, the average wind speed gently settles at 2.9 m/s (7 mph), marking a continuation of the summer’s calm breezes. Following the more blustery spring months, where winds reached a peak of 5.0 m/s (11 mph) in February, the trend clearly illustrates a seasonal shift towards quieter conditions during mid-summer into early autumn. While September's winds are slightly less vigorous than those of August, they hint at the transition into the cooler, more dynamic months ahead, with October and November set to bring back brisker gusts at around 4.7 m/s (10 mph). This evolving pattern reflects the rhythmic dance of the seasons along the coast, as Colwyn Bay prepares for the dramatic shifts that autumn inevitably brings.
The weather in Colwyn Bay 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 Colwyn Bay and find detailed weather information for every month.
September and January present contrasting weather characteristics. In September, temperatures range from a minimum of 3°C (37°F) to a maximum of 27°C (81°F), with an average of 14°C (57°F), making it a much warmer month. The humidity is relatively high at 85%, and the region experiences about 96 mm (3.8 in) of precipitation over 15 days. In comparison, January is much colder, with temperatures typically ranging from a minimum of -3°C (26°F) to a maximum of 14°C (58°F) and an average of 5°C (42°F). Although January sees less precipitation—71 mm (2.8 in) over 13 days—the humidity rises slightly to 89%. To learn more about January weather specifics, you can visit Colwyn Bay weather in January.
September weather typically features milder temperatures, with a minimum of 3°C (37°F) and an average of 14°C (57°F), reaching up to a maximum of 27°C (81°F). The month experiences about 96 mm (3.8 in) of precipitation over 15 days, with humidity levels averaging around 85%. In contrast, February is cooler, with temperatures ranging from a minimum of -5°C (24°F) to a maximum of 18°C (65°F) and an average of 6°C (43°F). It has slightly less precipitation at 92 mm (3.6 in) spread across the same 15 days, and humidity is relatively high at 88%. For more detailed information, you can check Colwyn Bay weather in February.
In comparing the weather of September and March, we find notable differences in temperature and seasonal characteristics. September tends to present milder conditions with average temperatures ranging from a minimum of 3°C (37°F) to a maximum of 27°C (81°F), while March offers cooler temperatures, displaying a minimum of -6°C (22°F) and a maximum of 19°C (66°F). Both months experience a similar amount of precipitation, approximately 96 mm (3.8 in), but March has slightly more rainy days, averaging 16 compared to September's 15. Humidity levels are comparable, with September at 85% and March slightly higher at 86%. For those interested in the specifics of March weather, you can explore more about Colwyn Bay weather in March.
September and April present distinct contrasts in weather, showcasing the transition from summer to autumn and the thawing of winter into spring. In September, temperatures range from a minimum of 3°C (37°F) to a maximum of 27°C (81°F), with an average of 14°C (57°F), and the month sees around 96 mm (3.8 inches) of precipitation over 15 days, contributing to a humidity level of 85%. In contrast, April experiences cooler temperatures, with a minimum of -1°C (30°F) and a maximum of 22°C (72°F), averaging 9°C (48°F). This month typically has lower precipitation, around 56 mm (2.2 inches) over 11 days, and a slightly lower humidity of 84%. For more detailed insights on April weather, you can visit Colwyn Bay weather in April.
When comparing the weather in September and May, there are some notable differences. September generally experiences a wider temperature range, with a minimum of 3°C (37°F) and an average of 14°C (57°F), while May has a slightly cooler minimum of -1°C (31°F) and an average of 12°C (53°F). Both months can reach a maximum of 27°C (81°F), but September is characterized by higher humidity at 85% compared to May’s 79%. Precipitation is also a factor; September sees 96 mm (3.8 in) of rain over 15 days, while May averages 71 mm (2.8 in) over 12 days. For more specific details on May weather, you can check Colwyn Bay weather in May.
In June, temperatures generally range from a minimum of 6°C (42°F) to a maximum of 28°C (84°F), with an average temperature of 15°C (59°F). The month experiences slightly less precipitation than September, with 99 mm (3.9 in) over 13 days and a humidity level of 81%. In contrast, September sees temperatures that drop slightly, with a minimum of 3°C (37°F), an average of 14°C (57°F), and a maximum reach of 27°C (81°F). The precipitation in September is similar at 96 mm (3.8 in) but occurs over 15 days, along with a higher humidity of 85%. Overall, while both months are relatively mild, June tends to be warmer and drier than September. For a closer look at June weather specifics, check out Colwyn Bay weather in June.
In comparison to July, September experiences cooler temperatures, with a minimum of 3°C (37°F) and an average of 14°C (57°F), contrasted with July's minimum of 7°C (44°F) and average of 16°C (61°F). While both months have similar levels of precipitation, September sees slightly more rainfall at 96 mm (3.8 in) over 15 days, compared to July's 92 mm (3.6 in) over 16 days. Additionally, September is more humid at 85%, while July maintains a lower humidity level of 78%. For more specific insights about July's weather, you can refer to Colwyn Bay weather in July.
In comparing the weather between August and September, we observe distinct shifts in temperature and humidity. September experiences a wider temperature range with minimums dropping to 3°C (37°F), while the average temperature settles at 14°C (57°F) and peaks at 27°C (81°F). In contrast, August maintains a milder range, with minimums at 7°C (45°F) and an average of 16°C (60°F). Precipitation levels remain consistent, with both months recording 96 mm (3.8 in), although September sees rain on 15 days compared to August's 18 days. Additionally, September's humidity at 85% is slightly higher than August's 79%, contributing to a more damp atmosphere as autumn approaches. For a detailed look at August’s weather, you can visit Colwyn Bay weather in August.
In September, the weather begins to transition from the warmth of summer, with temperatures ranging from a comfortable 3°C (37°F) at night to a peak of 27°C (81°F) during the day. This month experiences an average temperature of 14°C (57°F) and sees 96 mm (3.8 in) of precipitation over 15 days, with humidity levels at a relatively high 85%.
By October, the weather takes a more distinct turn towards autumn. Minimum temperatures drop to -2°C (28°F), while daytime highs reach 21°C (70°F), leading to an average of 11°C (52°F). The rainfall increases slightly to 107 mm (4.2 in) spread over 17 days, and humidity rises to 90%. For those interested in more detailed information, visit Colwyn Bay weather in October.
September offers a milder climate with temperatures ranging from a minimum of 3°C (37°F) to a maximum of 27°C (81°F), averaging around 14°C (57°F). The month experiences about 15 rainy days, contributing to a total precipitation of 96 mm (3.8 in), and it typically has a humidity level of 85%. In contrast, November sees a noticeable drop in temperatures, with a minimum of -2°C (29°F) and a maximum of 16°C (60°F), averaging around 8°C (47°F). Although precipitation is slightly lower at 91 mm (3.6 in), it occurs over 18 days, leading to a higher humidity level of 91%. For more detailed insights, check out Colwyn Bay weather in November.
In September, temperatures in Colwyn Bay range from a chilly 3°C (37°F) at night to a warm 27°C (81°F) during the day, averaging around 14°C (57°F). This month sees about 96 mm (3.8 in) of precipitation over 15 days, with humidity levels at a relatively moderate 85%. In contrast, December brings much colder temperatures, with lows dipping to -3°C (26°F) and daytime highs averaging just 6°C (44°F). It also experiences increased precipitation at 115 mm (4.5 in) across 18 days, alongside slightly higher humidity at 89%. For more detailed weather information, check out Colwyn Bay weather in December.
As summer fades, September in Colwyn Bay offers a mixed bag of weather, transitioning from warm sunny days to cooler evenings. With temperature highs reaching a pleasant 27°C, it’s a time when outdoor activities are still inviting, but the drop in nighttime lows can be quite stark. This month typically sees more rain, with about 15 days of precipitation contributing to a total of 96 mm, making it distinctly wetter than the drier summer months. Coupled with high humidity levels around 85%, the air often feels quite muggy. For those curious about how September stacks up against other months in this picturesque coastal town, detailed insights can be found at Colwyn Bay Climate.