Last updated: March 17, 2025
In September, Penmaenmawr experiences a unique blend of temperate weather, with a maximum temperature reaching up to 27°C (81°F) and an average of 14°C (57°F), while the mercury can dip to a minimum of 2°C (36°F). This month witnesses significant precipitation, accumulating around 100 mm (4.0 in) over approximately 15 days, contributing to an often humid environment with levels hovering around 85%. Visitors to this picturesque coastal town during September can expect a refreshing yet variable climate, ideal for those who enjoy a balance of sun and occasional rain.
As September rolls into Penmaenmawr, the transition into autumn brings a notable shift in temperatures. With minimums dipping to 2°C (36°F) and averages settling around 14°C (57°F), the coastal town begins to cool from the summer warmth. Despite this drop, maximum daytime temperatures can still reach a pleasant 27°C (81°F), offering the last remnants of warmer days before winter sets in. This month serves as a delightful bridge between the vibrant summer and the crisp chill of fall, making it a prime time for outdoor activities against the backdrop of changing leaves and coastal scenery.
September in Penmaenmawr marks a pivotal transition in the precipitation cycle, as it delivers a substantial 100 mm (4.0 in) of rain over 15 days. This month's rainfall slightly dips from August's peak, yet remains significant, contributing to an overall trend of moisture as autumn approaches. As summer wanes, the steady rhythm of rain sets the stage for the wetter months ahead, with October expected to bring even more precipitation at 122 mm (4.8 in). The consistency in rain days throughout the early autumn suggests a gradual shift towards the characteristic dampness of winter, illustrating Penmaenmawr's lush and vibrant landscape throughout the changing seasons.
As summer transitions to autumn, September brings a noticeable shift in humidity levels in Penmaenmawr, United Kingdom, averaging around 85%. This month stands out with its higher humidity compared to the drier summer months of July and August, which recorded 78% and 79% respectively. Following the warm season, September’s humidity begins to edge upwards, aligning more closely with the trends seen in early spring, where levels hover in the mid to high 80s. Looking ahead, the humidity continues to rise gradually into October, peaking at 90% before reaching its highest during the winter months. This rhythmic ebb and flow showcases the region's characteristic maritime climate, where moisture levels fluctuate with the changing seasons.
In September, Penmaenmawr experiences a UV Index of 5, placing it in the moderate exposure category. This signals a shift from the high summer indices, offering residents and visitors a bit of relief as burn time stretches back to 30 minutes. Compared to the intensity of June and July, where the UV Index peaked at 8, September provides a more manageable yet still cautious environment for sun exposure. As the autumn season approaches, it's crucial to stay aware of UV levels, especially as they can still affect skin health. For those planning outdoor activities, this is a gentle reminder that protection is still important. For more detailed information, visit Penmaenmawr UV Index.
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September in Penmaenmawr, United Kingdom, continues the trend of diminishing daylight as summer gives way to autumn, offering a generous 313 hours of sunshine. This marks a notable decline from the sun-drenched peaks of July and August, which boasted 421 and 385 hours respectively. However, compared to the dreariness often associated with the upcoming months, September still shines brightly, retaining significantly more daylight than the cold winter months ahead, with October dropping to 237 hours. This transition highlights the lingering warmth of late summer, inviting locals and visitors alike to relish in the clear skies and golden hues of early fall before the shorter, cloudier days of winter set in.
September in Penmaenmawr, United Kingdom, marks a subtle transition as the summer draws to a close, and the likelihood of sunny weather dips to 19%. This slight decrease in sunshine is reflective of a broader trend observed throughout the year—after a promising peak in April with 45% sunshine, the chance of clear skies fluctuates, particularly in the summer months. Although July offers the highest probability of sunshine at 34%, September’s figures show a notable decline compared to the preceding summer months of June and August, both hovering around 23%. As autumn approaches, expectations for bright days fade, but Penmaenmawr’s scenic beauty remains, beckoning visitors regardless of the weather.
As summer wanes in Penmaenmawr, September marks a gentle decline in daylight, offering around 12 hours of sunshine each day. This reduction follows the peak of 16 hours in June and July, transitioning into the softer light of autumn. While days are still pleasantly long compared to the winter months, where daylight dwindles to a mere 7 hours by December, September serves as a reminder of nature’s cyclical rhythm. The gradual loss of light invites a cozy transition, where evenings grow shorter, and the vibrant hues of fall begin to emerge, making it a perfect time to relish the remaining warm days.
As September unfolds in Penmaenmawr, the coastal winds begin to mellow, averaging 2.9 m/s (7 mph), highlighting the transition into the softer breezes of autumn. This month marks a noticeable dip from the gustier summer months, where July recorded the lowest winds at 2.4 m/s (5 mph). Following this, September maintains a gentle consistency akin to the previous months, reminiscent of June and August. However, the approach of October promises a resurgence in wind speed with an expected increase to 4.7 m/s (11 mph). Thus, while September's winds are calm and inviting, they signal the gradual shift toward the more invigorating gusts of fall, creating a lovely balance of serenity and anticipation along the shores.
The weather in Penmaenmawr 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 Penmaenmawr and find detailed weather information for every month.
September and January present contrasting weather conditions. In September, temperatures can range from a chilly 2°C (36°F) at night to a warm 27°C (81°F) during the day, with an average of 14°C (57°F). The month also brings significant rainfall, totaling around 100 mm (4.0 in) over 15 days and a humidity level of 85%. In contrast, January is decidedly colder, with temperatures ranging from a low of -4°C (24°F) to a milder high of 14°C (57°F), averaging at 5°C (42°F). Although January experiences less precipitation at 78 mm (3.1 in) over 13 days, the humidity remains high at 89%. For more detailed insights, check out the Penmaenmawr weather in January.
September and February present quite contrasting weather patterns. In September, temperatures range from a mild 2°C (36°F) at night to a warm 27°C (81°F) during the day, with an average of 14°C (57°F). The month sees about 100 mm (4.0 in) of precipitation spread over 15 days, with humidity levels around 85%. In contrast, February experiences cooler temperatures, with nighttime lows dropping to -5°C (23°F) and daytime highs reaching 19°C (66°F), averaging around 6°C (43°F). This month records slightly more precipitation at 103 mm (4.1 in) throughout 16 days and a higher humidity level of 88%. For a closer look at February weather specifics, you can visit Penmaenmawr weather in February.
When comparing the weather in September and March, we observe notable differences in temperature and precipitation patterns. September typically boasts milder temperatures, ranging from a minimum of 2°C (36°F) to a comfortable maximum of 27°C (81°F), with an average of 14°C (57°F). In contrast, March experiences colder conditions, with temperatures dipping as low as -6°C (22°F) and peaking at 18°C (65°F), averaging around 7°C (44°F). Precipitation is fairly similar in both months, with September receiving about 100 mm (4.0 in) over approximately 15 days, whereas March sees slightly higher precipitation levels at 105 mm (4.1 in) across 17 days. Humidity levels are also comparable, with September at 85% and March slightly higher at 86%. For a more detailed look at the weather patterns, you can explore Penmaenmawr weather in March.
When comparing the weather in September and April, notable differences emerge in both temperature and precipitation. September enjoys a warmer climate, with average temperatures ranging from a minimum of 2°C (36°F) to a maximum of 27°C (81°F), whereas April experiences cooler temperatures, with a range of -2°C (28°F) to 22°C (73°F). Additionally, September is marked by higher precipitation, totaling 100 mm (4.0 in) over 15 days, compared to April’s 58 mm (2.3 in), spread over only 12 days. Humidity levels remain relatively similar, with September at 85% and April at 84%. For more specific details, you can check Penmaenmawr weather in April.
When comparing the weather in September and May, September tends to be warmer overall, with average temperatures around 14°C (57°F) and maximums reaching up to 27°C (81°F). In contrast, May starts slightly cooler with an average of 11°C (53°F) and maximum temperatures peaking at 28°C (82°F). Precipitation in September is more frequent, with 100 mm (4.0 in) over 15 days, while May sees a total of 78 mm (3.1 in) spread across 13 days. Both months maintain high humidity levels, but September is slightly more humid at 85% compared to May's 79%. For a closer look at May's weather specifics, you can refer to Penmaenmawr weather in May.
In comparing the weather of September and June, we see some notable similarities and differences. September has a slightly wider temperature range, with minimums dropping to 2°C (36°F) and maximums reaching 27°C (81°F), while June holds a minimum of 4°C (40°F) and a maximum of 29°C (85°F). Both months experience a similar amount of precipitation, with September at 100 mm over 15 days and June slightly less at 98 mm over 13 days. Humidity levels are also comparable, with September at 85% and June at 81%. Overall, both months offer mild temperatures, but September tends to be cooler with more cloudy and rainy days. For a more detailed look at June weather specifically, you can visit Penmaenmawr weather in June.
When comparing the weather in September to that in July, notable differences emerge. September experiences a broader temperature range, with minimums dropping to 2°C (36°F) and maximums reaching 27°C (81°F), giving it an average of 14°C (57°F). In contrast, July features milder conditions, with temperatures ranging from a minimum of 6°C (43°F) to a maximum of 30°C (87°F), leading to a slightly higher average of 16°C (61°F). Both months have significant precipitation, but September sees a bit more rain at 100 mm (4.0 in) over 15 days, whereas July has 93 mm (3.7 in) spread over 16 days. Additionally, September's higher humidity level at 85% adds to its feeling of mugginess compared to July's 78%. For more specifics on July weather, check out Penmaenmawr weather in July.
In September, temperatures in Penmaenmawr begin to drop slightly, with a minimum of 2°C and an average of 14°C, compared to August's warmer minimum of 6°C and an average of 15°C. Both months share a maximum temperature of 27°C, indicating a similar peak in warmth. However, September experiences more precipitation, totaling 100 mm over 15 days, while August sees slightly higher rainfall of 109 mm across 18 days. Interestingly, the humidity is higher in September at 85%, compared to August's 79%. For more detailed insights into August weather, you can visit Penmaenmawr weather in August.
September generally offers milder weather compared to October, with average temperatures ranging from a minimum of 2°C (36°F) to a maximum of 27°C (81°F). In contrast, October sees cooler conditions, with temperatures dropping to a minimum of -3°C (26°F) and an average high of 21°C (71°F). Both months experience notable rainfall, but October edges out September, accumulating 122 mm (4.8 in) of precipitation over 19 days, compared to September's 100 mm (4.0 in) over 15 days. Additionally, humidity levels rise slightly in October to 90%, up from September's 85%. For more detailed information, you can refer to Penmaenmawr weather in October.
September's weather in Penmaenmawr is generally warmer, with average temperatures ranging from a minimum of 2°C (36°F) to a maximum of 27°C (81°F). In contrast, November sees cooler temperatures, with averages between -2°C (28°F) and 15°C (60°F). Both months experience notable precipitation, with September receiving about 100 mm (4.0 in) over 15 days, while November has slightly higher precipitation at 103 mm (4.1 in) across 19 days. Additionally, November tends to have increased humidity (91%) compared to September's 85%. For more details on the November climate, you can check Penmaenmawr weather in November.
In September, the weather is generally milder, with temperatures ranging from a minimum of 2°C (36°F) to a maximum of 27°C (81°F), averaging around 14°C (57°F). The month sees about 100 mm (4.0 in) of precipitation over 15 days, with humidity levels at 85%. In contrast, December brings cooler conditions, with temperatures fluctuating between -3°C (26°F) and 13°C (56°F), averaging just 6°C (44°F). Precipitation in December increases to 128 mm (5.0 in), occurring over 20 days, and humidity rises slightly to 89%. For more details on the December climate, you can explore Penmaenmawr weather in December.
As summer fades into autumn, September in Penmaenmawr showcases a distinctive shift in weather, characterized by cooler temperatures and increased humidity levels. While the month can still boast occasional warm days, the chill in the air reminds residents and visitors alike that winter is on the horizon. With an average temperature hovering around 14°C, a marked contrast emerges from the heat of summer, complemented by frequent rainy spells—15 days of precipitation accumulating to about 100 mm. This combination of warmth and wetness creates a unique and refreshing atmosphere, embodying the transition of the seasons. For those looking to understand more about the region's overall climate patterns, further insights can be found at Penmaenmawr Climate.