Last updated: March 17, 2025
In September, Holyhead, United Kingdom, experiences a temperate climate marked by a maximum temperature of 24°C (76°F) and an average of 15°C (59°F), making it a pleasant time for outdoor activities. The minimum temperature can dip to 9°C (48°F), reminding visitors to pack accordingly. However, with 97 mm (3.8 in) of precipitation over about 14 days, occasional rainfall is to be expected, contributing to the region's lush greenery. The high humidity level of 85% can enhance the feeling of warmth, encouraging a refreshing coastal breeze. Visitors should prepare for varied weather while enjoying stunning views and the charm of Holyhead during this transitional month.
In September, Holyhead enjoys the last whispers of summer, with temperatures showcasing a gentle transition into autumn. The month welcomes a minimum of 9°C (48°F), rising to an average of 15°C (59°F), and peaking at a comfortable 24°C (76°F), reflecting the climate's overall warming trend into early fall. While nights may start to feel a bit cooler, the days remain pleasantly mild, making it an ideal time for outdoor exploration. As the year progresses, the temperatures dip, but September's warmth serves as a delightful farewell to the sunny days of summer, paving the way for the crispness of October.
September in Holyhead sees a notable continuation of summer rainfall, with precipitation amounting to 97 mm (3.8 in) across 14 rainy days. This marks a steady trend from August, which also recorded the same rainfall, suggesting that early autumn maintains the dampness typical of this coastal region. As the month transitions into autumn, the skies often remain gray, paving the way for a significant increase in precipitation in the following months, particularly October and November, which both average above 150 mm of rainfall. This consistent pattern highlights Holyhead's coastal climate, characterized by its variable rainfall throughout the year, culminating in a wet finish to the season.
In September, Holyhead experiences a notable humidity level of 85%, signaling a subtle shift as summer winds down. This dip from the warmer months, where humidity often hovers around the high 70s to low 80s, marks a transition towards the more humid conditions typical of autumn. As the month progresses, humidity climbs back to the levels seen in early spring, mirroring trends observed in October and November. This rise in moisture reflects the changing seasons and sets the stage for the heavier, more humid air that often blankets the region as winter approaches, with October reaching a peak of 90%. Thus, September serves as a bridge, where the remnants of summer humidity gracefully hand over the reins to the impending autumn chill.
In September, Holyhead experiences a moderate UV Index of 5, indicating that while sun exposure is safe for most, it's wise to be vigilant about skin protection. With a burn time of 30 minutes, locals and visitors alike should take care to limit excessive sun exposure, especially during peak hours. This month marks a transition from the heights of summer UV levels, which reached a peak of 8 in July and June, gradually tapering off toward the lower thresholds of late autumn. As we move into the cooler months, it's a reminder to enjoy the outdoors while keeping skin safety in mind. For detailed insights, visit Holyhead UV Index.
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As summer fades in Holyhead, September offers a delightful transition with 312 hours of sunshine, maintaining the warmth of the season while hinting at the cooler months ahead. This month stands out as a noticeable drop from the peak of summer, which enjoyed over 400 hours in both June and July. However, compared to the earlier months of the year, September still shines brighter than the chilly winter months of November and December, enhancing the cozy charm of early autumn. The steady decline in sunshine hours from May's dazzling 414 hours to September’s soft glow highlights the ebbing warmth while paving the way for the crisp beauty that autumn brings. Overall, September in Holyhead showcases a balance of lingering summer vibes and the onset of seasonal change, making it a perfect time for outdoor adventures under a pleasantly warm sky.
In Holyhead, September typically brings a 24% chance of sunny weather, placing it on par with the cloudier months of January and October. This statistic reveals a noticeable dip in sunshine likelihood as summer fades, contrasting with April's peak of 48%, which showcases the region's more favorable weather earlier in the year. While September may not be the sunniest month, the mild temperatures and occasional sunny spells offer a charming backdrop for early autumn explorations. After the vibrant summer months, with July showing a 38% chance of sunshine, the shift in weather invites residents and visitors alike to embrace the changing season, though it's wise to keep an eye on the clouds.
As September unfolds in Holyhead, the days begin to shorten, marking a transition from the long, sun-drenched summer months to the crisp beginnings of autumn. With 12 hours of daylight, September still enjoys a generous amount of sunshine, albeit less than August's peak of 14 hours. This gradual decline in daylight, following the vibrant 16 hours of June and July, highlights the shifting seasons as nature prepares for the colder months ahead. The trend of decreasing daylight from the summer solstice culminates in October, when the hours drop further to 10. Despite the diminishing daylight, September offers a warm farewell to summer, inviting residents and visitors to savor the last golden rays before they retreat into the shorter, cozier days of fall.
As September rolls into Holyhead, the winds begin to calm, averaging 4.5 m/s (10 mph), a gentle respite after the blustery summer months. This shift marks a notable trend as the wind speeds decline from the more robust 8.2 m/s (18 mph) of February and the consistent 6.9 m/s (15 mph) seen in March. The soft breeze of September reflects a transitional phase, carrying hints of autumn while still holding onto the lingering warmth of summer. Interestingly, this month's wind speeds mirror those of April, suggesting a cyclical pattern as the seasons change. As October approaches, the winds will pick up again, bringing with them the invigorating gusts typical of the fall months, but for now, September's gentle winds invite a moment of pausing and enjoying the late summer landscape.
The weather in Holyhead 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 Holyhead and find detailed weather information for every month.
In September, the weather is generally milder with temperatures ranging from a minimum of 9°C (48°F) to a maximum of 24°C (76°F), averaging around 15°C (59°F). This month also sees a higher level of warmth and more sunshine compared to January, which experiences much cooler temperatures, with a range from 2°C (35°F) to 14°C (57°F) and an average of just 7°C (46°F). Additionally, September tends to be wetter with 97 mm (3.8 in) of precipitation over 14 days, though January is not far behind with 81 mm (3.2 in) over 13 days. Humidity levels are slightly higher in January, reaching 89%, compared to 85% in September, adding to the overall chill of the winter month. For more detailed information, you can check out Holyhead weather in January.
When comparing the weather in September and February, there are notable differences in temperature and precipitation patterns. September generally enjoys milder temperatures, with a minimum of 9°C (48°F) and a maximum of 24°C (76°F), while February experiences cooler conditions, with minimum temperatures dropping to 0°C (32°F) and a maximum of only 15°C (59°F). Precipitation is relatively high in both months, with September receiving 97 mm (3.8 in) over 14 days and February slightly wetter at 106 mm (4.2 in) across 17 days. Additionally, humidity levels are higher in February at 88% compared to 85% in September, reflecting a more damp and chilly atmosphere. For a detailed look at February's weather, you can refer to Holyhead weather in February.
September and March present contrasting weather conditions. September boasts a more moderate climate with temperatures ranging from a minimum of 9°C (48°F) to a maximum of 24°C (76°F) and an average of 15°C (59°F). In contrast, March experiences colder temperatures, starting as low as -3°C (26°F) and peaking at 15°C (60°F), leading to a significantly lower average of 8°C (46°F). Both months, however, receive comparable precipitation; September records 97 mm (3.8 in) over 14 days, while March sees slightly higher levels at 101 mm (4.0 in) across 17 days. The humidity levels remain relatively similar, with September at 85% and March at 86%. For more detailed insights, you can check Holyhead weather in March.
September and April present markedly different weather conditions. In September, temperatures range from a mild 9°C (48°F) at night to a warm 24°C (76°F) during the day, with an average of 15°C (59°F). This month also sees increased precipitation, totaling 97 mm (3.8 in) over 14 days, and humidity levels are relatively high at 85%. In contrast, April experiences cooler temperatures, with a minimum of 3°C (38°F) and a maximum of 19°C (67°F), averaging just 9°C (49°F). Precipitation is lower at 50 mm (2.0 in) over 10 days, and humidity is slightly lower at 84%. For more detailed insights on the weather in April, you can check Holyhead weather in April.
When comparing the weather in September and May, we can notice some distinct differences. September tends to be warmer, with average temperatures around 15°C (59°F) and a maximum of 24°C (76°F), while May's average is cooler at 11°C (53°F) and peaks at 22°C (72°F). September also experiences more precipitation, with 97 mm (3.8 in) over about 14 days, compared to May's 58 mm (2.3 in) across 11 days. Additionally, September has higher humidity levels, averaging 85% compared to May's 79%. For those interested in May's specific conditions, you can find more information in this link: Holyhead weather in May.
September weather tends to be slightly warmer than June, with average temperatures reaching 15°C (59°F) compared to June's average of 14°C (57°F). Both months experience similar maximum temperatures of 24°C (76°F), but September is marked by a higher minimum temperature of 9°C (48°F), matching June's minimum. When it comes to precipitation, September receives a bit more rain at 97 mm (3.8 in) over 14 days, while June sees 80 mm (3.2 in) across 13 days. Humidity levels are also higher in September at 85%, compared to 81% in June. For more specific details about June weather, you can check Holyhead weather in June.
In comparing the weather between September and July, we see that both months offer mild temperatures, with average highs around 24°C (75-76°F). However, September experiences slightly cooler minimum temperatures, averaging 9°C (48°F), compared to July's 11°C (51°F). Additionally, September tends to be wetter, receiving 97 mm (3.8 in) of precipitation over 14 days, while July has less rainfall at 66 mm (2.6 in) over 12 days. Humidity levels are also higher in September at 85%, compared to July's 78%. For more detailed insights, check out Holyhead weather in July.
In comparing the weather of September to that of August, September shows a slight decline in average temperatures, with a minimum of 9°C (48°F) and an average of 15°C (59°F), compared to August's minimum of 11°C (52°F) and average of 16°C (61°F). Both months recorded the same total precipitation of 97 mm (3.8 in), but September experienced rain on 14 days, which is less than the 17 days of rain seen in August. Additionally, September's higher humidity level at 85% contrasts with August's more comfortable 79%, making September feel a bit more muggy overall. For more detailed insights into August weather, you can visit Holyhead weather in August.
In September, the weather begins to cool off with average temperatures ranging from a minimum of 9°C (48°F) to a maximum of 24°C (76°F). It experiences moderate precipitation of 97 mm (3.8 inches) over 14 days, accompanied by relatively high humidity at 85%. In contrast, October sees further temperature declines, with minimums dropping to 3°C (38°F) and maximums capping at 20°C (68°F), leading to a cooler average of 13°C (55°F). This month also brings increased rainfall, totaling 151 mm (6.0 inches) over 19 days, and humidity rises to 90%. For a detailed look at the weather specifics, you can refer to Holyhead weather in October.
In comparing the weather of September and November, it is evident that November is characterized by cooler temperatures and higher precipitation. September boasts a milder climate, with average temperatures ranging from a minimum of 9°C (48°F) to a maximum of 24°C (76°F), while November's temperatures dip, averaging between 4°C (39°F) and 15°C (60°F). Precipitation is also more frequent in November, with 145 mm (5.7 in) falling over 21 days, compared to September's 97 mm (3.8 in) over 14 days. Additionally, humidity levels rise slightly in November, reaching 91% compared to September's 85%. For more detailed information, you can visit Holyhead weather in November.
In September, the weather is generally milder, with temperatures ranging from a minimum of 9°C (48°F) to a maximum of 24°C (76°F), and an average temperature of 15°C (59°F). This month sees about 97 mm (3.8 in) of precipitation spread over 14 days, and humidity levels are around 85%. In contrast, December brings much cooler conditions, with temperatures dropping to a minimum of 3°C (37°F) and peaking at just 13°C (56°F), averaging 8°C (48°F). Precipitation increases to 151 mm (5.9 in) over 21 days, and humidity rises slightly to 89%. For more detailed information, you can check Holyhead weather in December.
As September unfolds in Holyhead, the weather begins to transition, showcasing a unique blend of warmth and moisture that sets it apart from the summer months. The maximum temperatures of 24°C (76°F) offer a final taste of summer, while the average dips to a cooler 15°C (59°F), hinting at the impending autumn. With high humidity levels around 85% and nearly half the month experiencing rain, the landscape transforms, welcoming the vibrant fall hues. This shift not only creates a more unpredictable climate compared to the sunnier summer but also brings a cozy charm that encourages exploration. For a deeper dive into how September fits into the overall weather patterns, visit Holyhead Climate.