September Weather in Menai Bridge, United Kingdom

Last updated: March 17, 2025

In September, the weather in Menai Bridge, United Kingdom, offers a blend of mild temperatures and frequent showers, making it a unique month for residents and visitors alike. With a maximum temperature reaching 27°C (81°F) and an average of 14°C (57°F), the days can feel pleasantly warm, yet the minimum dips to 3°C (38°F) during the cooler nights. This month sees a notable precipitation total of 98 mm (3.9 in), distributed across 15 rainy days, leading to an impressive humidity level of 85% that lends the air a crisp coastal feel. Whether you're exploring the picturesque scenery or enjoying local attractions, September's weather in Menai Bridge invites both adventure and the cozy comfort of indoor retreats.

September Temperature in Menai Bridge

As September unfolds in Menai Bridge, temperatures start to shift, marking the transition from summer's warmth to autumn's crispness. With minimums averaging around 3°C (38°F) and maximums reaching a pleasant 27°C (81°F), the month showcases a comfortable range that invites outdoor exploration. The average temperature of 14°C (57°F) hints at the lingering summer warmth, yet the cooler nights remind us of the changing season. Compared to August, when the warmth peaks, September presents a more moderate climate, making it an ideal time for strolls along the scenic bridge or enjoying the vibrant fall foliage that begins to emerge.

September Weather in Menai Bridge: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Menai Bridge, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec434445485358616057524745
Data source: Temperature data for Menai Bridge generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Menai Bridge

In September, Menai Bridge experiences a notable amount of rainfall, with 98 mm (3.9 in) of precipitation spread over 15 days. This marks a slight decrease from the wet conditions of August, which saw 105 mm of rain over 19 days. As summer transitions into autumn, September's precipitation reflects a typical shift in the weather patterns, offering a balance between lingering moisture and the onset of cooler fronts. The rainfall is indicative of Menai Bridge’s generally soggy reputation, but it also showcases the rich, lush landscapes that thrive in this temperate coastal climate. As the month progresses, residents can expect both intermittent rain and the beautiful transformation of fall foliage, making it a captivating time of year.

September Precipitation Trends in Menai Bridge

The chart displays monthly precipitation patterns in Menai Bridge, with values for each month alongside September's data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September's conditions compare to those of other months.
JanFebMarAprMayJunJulAugSepOctNovDec771031045571918210598128111129
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Menai Bridge

In Menai Bridge, September marks a notable transition in humidity levels, settling at 85%. Following the relatively drier summer months of July and August, which saw humidity levels dip to 78% and 79% respectively, September experiences a slight uptick as autumn approaches. This increase is a precursor to the wetter months, with October and November looming ahead, where humidity spikes to 90% and 91% respectively. The trend reflects a gradual rise from the comfortable summer conditions back towards the high humidity typical of winter, signaling a shift in the season and wrapping up the summer's warmth with a touch of moisture in the air.

September Average Humidity in Menai Bridge

This chart illustrates the average monthly humidity levels in Menai Bridge, with September's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how September's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec89%88%86%85%79%81%78%79%85%90%91%89%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Menai Bridge

As September rolls into Menai Bridge, the UV Index experiences a shift to a moderate level of 5, indicating a transition from the high summer months. This means that while the risk of harm from unprotected sun exposure is still present, it's less intense than during the peak summer months of June and July, which both recorded a very high UV Index of 8. With a burn time of approximately 30 minutes, it's essential to remain mindful of sun safety during this month, as the days gradually shorten while outdoor activities remain inviting. You can stay updated on UV levels and protective measures by checking out Menai Bridge UV Index. Overall, September offers a delightful balance of sunny days and manageable UV exposure, making it a perfect time to enjoy the great outdoors.

Maximum UV Index Levels in Menai Bridge for September

The chart shows the monthly maximum UV Index (UVI) for Menai Bridge in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec124578875421
Data source: Menai Bridge September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

September Sunshine in Menai Bridge

In September, Menai Bridge enjoys a pleasant transition from the vibrant summer months, basking in 315 hours of sunshine. This marks a subtle decrease from the bustling peak of July, which boasts the highest sunlight at 421 hours, yet it's still significantly brighter than the dreary fall and winter months that follow. As summer bids farewell, the days gradually shorten, but September's warmth lingers, offering a delightful blend of sunny afternoons and cooler evenings. The sun's retreat signals nature’s stunning transformation, making it a perfect time for outdoor adventures amidst the breathtaking scenery of this charming town.

Monthly Sunshine Duration in Menai Bridge: September Highlighted

The September sunshine duration represents the total number of hours Menai Bridge experiences direct sunlight during the month of September, excluding cloudy or obstructed periods. This chart compares the sunshine duration of September with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec93h162h228h335h415h404h421h383h315h238h126h109h
Data source: Menai Bridge September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Menai Bridge During September

As September rolls into Menai Bridge, the likelihood of sunny weather dips to 20%, marking it as one of the cooler months for sunshine. This trend reflects a gradual shift from the summer's more promising months—where sunny chances peak at 35% in July and 30% in May—down towards the cloudier autumn vibe. As the year transitions, the chance of sun continues to decline, with October and November seeing even lower probabilities. Although September offers a farewell to summer warmth, it also serves as a gentle reminder that brighter days are giving way to the cozier embrace of fall.

Percentage of Sunny Days in September in Menai Bridge

The chart illustrates the percentage of sunny days in Menai Bridge throughout the year, with September highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Menai Bridge experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec22%25%25%46%30%25%35%24%20%17%19%23%
Data source: Menai Bridge September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Menai Bridge in September

As September arrives in Menai Bridge, the days begin to gradually shorten, transitioning from the long, sunlit hours of summer. After basking in an impressive 16 hours of daylight during the peak of July and August, the daylight duration in September dips to 12 hours. This shift reflects nature's rhythmic dance as autumn approaches, inviting softer, golden hues into the landscape. The longer days of May, with up to 15 hours, and June, at 16 hours, set the stage for the crisp, refreshing days ahead, while the evenings start to grow a little longer, hinting at the cozy months of October, which brings a further reduction to 10 hours.

Average Daylight Hours in Menai Bridge for September

The chart illustrates the variation in daylight duration in Menai Bridge throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 8m9h 50m11h 54m14h 1m15h 53m16h 52m16h 20m14h 39m12h 37m10h 31m8h 37m7h 36m
Data source: Menai Bridge daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Menai Bridge

In September, the winds in Menai Bridge begin to mellow as summer transitions to autumn, with an average speed of 3.3 m/s (7 mph). This light breeze reflects a notable dip compared to the earlier months of the year, with the highest winds recorded in winter and late autumn, such as 5.5 m/s (12 mph) in October and 4.6 m/s (10 mph) in January. As the seasons change, September’s gentle gusts offer a calm reprieve after summer’s more robust breezes, making way for the cooler, invigorating winds that lie ahead. The trend reveals a consistent seasonal cycle, with winds picking up again as the year progresses into fall, thus creating a rhythm that defines Menai Bridge's unique climate.

Average September Wind Speed in Menai Bridge

The chart displays monthly wind speed patterns in Menai Bridge, with values for each month shown alongside September's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how September's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec4.65.85.23.34.03.82.73.83.3 m/s5.54.85.0
Data source: Menai Bridge September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Menai Bridge Compares to Other Months

The weather in Menai Bridge 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 Menai Bridge and find detailed weather information for every month.

September and January present contrasting weather patterns. In September, temperatures range from a minimum of 3°C (38°F) to a maximum of 27°C (81°F), with an average of 14°C (57°F). The month experiences significant precipitation, totaling 98 mm (3.9 in) over 15 days, and humidity levels are relatively high at 85%. In comparison, January is much colder, with temperatures dipping to a minimum of -3°C (27°F) and peaking at 14°C (57°F), averaging around 6°C (43°F). Precipitation is somewhat lower at 77 mm (3.0 in) over 13 days, while the humidity is slightly higher at 89%. For a closer look at the January weather specifically at Menai Bridge, check out Menai Bridge weather in January.

September and February showcase distinctly different 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 14°C (57°F). This month also sees a relatively high humidity level of 85% and about 98 mm (3.9 in) of precipitation over 15 days. In contrast, February offers much chillier conditions, with temperatures dipping to a low of -4°C (26°F) and reaching a maximum of 18°C (65°F), averaging 6°C (44°F). The month is slightly wetter, with 103 mm (4.1 in) of precipitation over 16 days and higher humidity at 88%. For more information on February's weather in a specific location, check out Menai Bridge weather in February.

September weather typically features milder temperatures, with a range between 3°C (38°F) and 27°C (81°F), leading to an average of 14°C (57°F). The month experiences around 98 mm (3.9 in) of precipitation spread over 15 days, while humidity stays relatively high at 85%. In contrast, March brings cooler conditions, with temperatures ranging from -5°C (23°F) to 18°C (65°F) and a lower average of 7°C (45°F). This month sees slightly more precipitation at 104 mm (4.1 in) across 18 days, along with a similarly high humidity level of 86%. For a detailed look at March weather, you can visit Menai Bridge weather in March.

In comparing the weather patterns of September and April, September presents a warmer climate, with daily temperatures ranging from a minimum of 3°C (38°F) to a comfortable average of 14°C (57°F) and peaking at 27°C (81°F). This month experiences more rainfall, with a total precipitation of 98 mm (3.9 in) spread over around 15 days, along with relatively high humidity at 85%. Conversely, April is cooler, with temperatures dipping to a minimum of -1°C (31°F) and averaging 9°C (48°F), while reaching a maximum of 22°C (72°F). The precipitation is lower at 55 mm (2.2 in) over about 11 days and maintains a slightly lower humidity level of 84%. For more specific details about the weather in April, you can check out Menai Bridge weather in April.

When comparing the weather in September and May, September tends to be warmer overall, with average temperatures reaching 14°C (57°F) and maximums of 27°C (81°F) compared to May's average of 12°C (53°F) and maximums of 28°C (82°F). However, September experiences more significant precipitation, with 98 mm (3.9 in) over about 15 days, while May has less rainfall at 71 mm (2.8 in) spread across 12 days. Humidity levels are slightly higher in September at 85%, compared to 79% in May. For a closer look at May weather specifics, you can check this link: Menai Bridge weather in May.

In comparing the weather of September and June, we find some interesting contrasts. September typically experiences a slightly broader temperature range, with minimums around 3°C (38°F) and maximums reaching 27°C (81°F), which is similar to June's min of 5°C (41°F) and max of 29°C (84°F). Both months see considerable precipitation, with September receiving about 98 mm (3.9 in) over 15 days, while June has a slightly lower total of 91 mm (3.6 in) across 14 days. In terms of humidity, September is a bit more humid at 85%, compared to June's 81%. For a more detailed look at June conditions specifically, you can check out Menai Bridge weather in June.

In comparing the weather of September and July, September tends to be cooler, with temperatures ranging from a minimum of 3°C (38°F) to a maximum of 27°C (81°F), averaging 14°C (57°F). The month sees more precipitation as well, with 98 mm (3.9 in) falling over 15 days, and a higher humidity level of 85%. In contrast, July offers milder temperatures, with a minimum of 7°C (45°F) and a maximum of 29°C (85°F), averaging 16°C (61°F). July also experiences slightly less precipitation at 82 mm (3.2 in), with similar rainfall days (15) but a lower humidity of 78%. For a closer look at July's weather specifics, you can visit Menai Bridge weather in July.

In September, the weather shows a notable shift as temperatures drop, with a minimum of 3°C (38°F) compared to August's minimum of 8°C (46°F). The average temperature in September is 14°C (57°F), slightly lower than August's 16°C (61°F), while the maximum temperature in September reaches 27°C (81°F), just above the 26°C (79°F) seen in August. Rainfall is quite comparable, with September receiving 98 mm (3.9 in) over 15 days, compared to August's 105 mm (4.1 in) over 19 days. Additionally, September has a higher humidity level at 85%, compared to August's 79%. For further details, you can check Menai Bridge weather in August.

In September, temperatures typically range from a minimum of 3°C (38°F) to a maximum of 27°C (81°F), with an average of 14°C (57°F). The month experiences about 98 mm (3.9 in) of precipitation over 15 days, with humidity levels around 85%. In contrast, October sees a more pronounced drop in temperature, with minimums dipping to -2°C (29°F) and a maximum of 22°C (71°F), averaging 11°C (53°F). Precipitation increases to 128 mm (5.1 in) spread across 18 days, and humidity rises slightly to 90%. For more detailed insights into October's weather at Menai Bridge, you can visit Menai Bridge weather in October.

September and November present quite different weather patterns. In September, temperatures range from a mild 3°C (38°F) at night to a warm max of 27°C (81°F) during the day, with an average of 14°C (57°F). This month sees a total precipitation of 98 mm (3.9 inches) spread over 15 days and a humidity level of 85%. In contrast, November experiences cooler temperatures, with lows dipping to -1°C (31°F) and highs reaching only 15°C (60°F), averaging at 9°C (48°F). Precipitation increases slightly to 111 mm (4.4 inches) over 19 rainy days, and humidity rises to 91%. For more detailed insights into the weather specifics, you can visit Menai Bridge weather in November.

September and December present quite different weather profiles. In September, temperatures range from a minimum of 3°C (38°F) to a maximum of 27°C (81°F), with an average of 14°C (57°F). The month experiences 15 days of precipitation, totaling 98 mm (3.9 in), and a humidity level of 85%. In contrast, December sees colder temperatures, with a minimum of -1°C (30°F) and a maximum of 13°C (56°F), averaging 7°C (45°F). It also experiences more frequent precipitation, with 20 days bringing a total of 129 mm (5.1 in) and slightly higher humidity at 89%. To explore the December weather conditions further, you can visit Menai Bridge weather in December.

Compare Menai Bridge's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Menai Bridge

As September unfolds in Menai Bridge, the weather presents a unique transition into autumn, showcasing a blend of mild warmth and occasional rainfall. With maximum temperatures peaking at a pleasant 27°C and an average hovering around a comfortable 14°C, this month stands out from the cooler summer months. However, the increase in precipitation—totaling 98 mm across 15 days—brings a notable shift in conditions, with humidity levels climbing to around 85%. This interplay of warmth and moisture can create vibrant scenery, making September a captivating time to explore the natural beauty of the region. For a deeper dive into the climatic nuances of this charming locale, visit Menai Bridge Climate.