September Weather in Cardigan, United Kingdom

Last updated: March 17, 2025

In September, Cardigan, United Kingdom experiences a dynamic transition into autumn, with temperatures ranging from a comfortable maximum of 26°C (78°F) to a cooler minimum of 7°C (44°F). The average temperature hovers around 15°C (59°F), offering a pleasant climate for outdoor activities. However, residents should prepare for a rainy month, as precipitation totals 112 mm (4.4 in) over 15 days, leading to a relative humidity level of 79%. This blend of warm days and frequent rain creates a uniquely British experience, highlighting the charm of Cardigan as it shifts into the fall season.

September Temperature in Cardigan

In September, Cardigan experiences a pleasant transition from summer to autumn, characterized by a minimum temperature of 7°C (44°F) and a maximum of 26°C (78°F). This month showcases an average temperature of 15°C (59°F), making it one of the more temperate times of the year. Compared to the sweltering heights of July and August, where temperatures regularly peak at 25°C (78°F) and 24°C (75°F) respectively, September offers a refreshing mildness. As the month progresses, the warm balminess gives way to cooler autumn breezes, hinted by the average temperature's gradual decline toward the cooler months that follow. This shift not only heralds the arrival of fall but also invites outdoor enthusiasts to savor the last whispers of summer while the landscape begins to don its autumn attire.

September Weather in Cardigan: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Cardigan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec444545485258616158544947
Data source: Temperature data for Cardigan 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 Cardigan

September in Cardigan, United Kingdom, wraps up the summer months with a notable precipitation amount of 112 mm (4.4 in), making it one of the wetter times of the year. With rainfall spread across 15 days, the frequent showers highlight a transition toward the wetter autumn months ahead. This trend follows August's substantial 117 mm (4.6 in), suggesting that the late summer season often brings a notable uptick in rainfall, paving the way for October's even higher average of 149 mm (5.9 in). As daylight shortens and temperatures begin to cool, September’s precipitation serves as a reminder of the changing seasons, setting the stage for the increasingly damp conditions typical of the region in the months to come.

September Precipitation Trends in Cardigan

The chart displays monthly precipitation patterns in Cardigan, 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.
JanFebMarAprMayJunJulAugSepOctNovDec9111910461739581117112149149173
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Cardigan

In September, Cardigan experiences a noticeable dip in humidity, with levels averaging around 79%. This marks a shift from the summer months, where humidity was relatively high, peaking at 73% in August. As autumn approaches, the air begins to feel crisper and more refreshing, contrasting sharply with the 88% humidity typical of January and February. This gradual decline throughout late summer and early autumn highlights the region's temperate climate, where the transition into fall is marked by a steady increase in moisture once again, as seen with the rising levels in October.

September Average Humidity in Cardigan

This chart illustrates the average monthly humidity levels in Cardigan, 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%84%80%80%70%73%79%89%90%89%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Cardigan

September in Cardigan, United Kingdom, ushers in a high UV Index of 6, reflecting a slight dip from the peak summer months. As the sun's intensity begins to diminish, residents and visitors can still enjoy outdoor activities with caution, as the time it takes for skin to burn remains at 25 minutes. This month signals a transition, highlighting the importance of sun protection as the weather remains pleasant. With the UV exposure category still classified as high, it’s wise to stay informed and take precautions. For more detailed insights and tips, check out the comprehensive guide at Cardigan UV Index.

Maximum UV Index Levels in Cardigan for September

The chart shows the monthly maximum UV Index (UVI) for Cardigan 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.
JanFebMarAprMayJunJulAugSepOctNovDec124578876421
Data source: Cardigan 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 Cardigan

As summer gracefully transitions into autumn, September in Cardigan shines with an impressive 313 hours of sunlight, marking a delightful dip from the sun-drenched 423 hours of July but still significantly brighter than the winter months ahead. The data reveals a clear upward trend from the bleakness of January’s 98 hours to the vibrant fullness of early summer, peaking in July and August. While the sunlight begins to wane as the days shorten, September remains a glowing reminder of summer’s warmth. This shift heralds the beginning of the cozy, cool months, allowing residents to enjoy the lingering radiance before embracing the charm of autumn.

Monthly Sunshine Duration in Cardigan: September Highlighted

The September sunshine duration represents the total number of hours Cardigan 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.
JanFebMarAprMayJunJulAugSepOctNovDec98h155h224h337h411h405h423h381h313h240h134h108h
Data source: Cardigan September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Cardigan During September

In Cardigan, United Kingdom, September offers a 28% chance of sunny weather, aligning closely with its summer predecessors like July and August, which boast figures of 41% and 34% respectively. However, as the month transitions into autumn, the likelihood begins to taper off, mirroring the decrease observed in October with only a 20% chance of sunshine. This subtle decline signals the end of the warm summer days, as the region braces for cooler, cloudier months ahead. While the sun may still peek through in September, residents and visitors alike should be prepared for the potential turn in weather as the season changes.

Percentage of Sunny Days in September in Cardigan

The chart illustrates the percentage of sunny days in Cardigan 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 Cardigan experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec27%26%29%52%34%28%41%34%28%20%22%24%
Data source: Cardigan September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Cardigan in September

As summer gracefully transitions into autumn, September in Cardigan, United Kingdom, offers a delightful balance of daylight, with approximately 12 hours illuminating the day. This marks a gradual decline from the 16 hours enjoyed during the peak of summer in June and July. As the month progresses, the warm hues of the evenings linger a bit longer, a gentle reminder of the vibrant days of summer that have just passed. With a notable decrease compared to the 14 hours in August, September serves as a bridge, gracefully paving the way towards the shorter days of autumn and winter, where daylight dips to 10 hours by October and a mere 8 hours by November. The pattern of daylight duration throughout the year reflects not just the changing seasons but also the comforting cycles of nature, inviting Cardigan’s residents to savor each sunny moment before the darker days set in.

Average Daylight Hours in Cardigan for September

The chart illustrates the variation in daylight duration in Cardigan throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 20m9h 56m11h 55m13h 55m15h 41m16h 36m16h 7m14h 32m12h 35m10h 35m8h 47m7h 49m
Data source: Cardigan daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Cardigan

As summer transitions into autumn, September in Cardigan, United Kingdom, sees a notable decrease in wind speed, averaging just 3.9 m/s (9 mph). This is part of a larger trend where wind speeds tend to drop during the late summer months, with July recorded as the calmest month at 3.6 m/s (8 mph). While the gentle breezes of September may seem a welcome reprieve from the more vigorous gusts earlier in the year, which peak in October at 6.4 m/s (14 mph), they also signal the approaching changes of the season. Contrasting with the brisk winds of November and December, September's mild air lends a tranquil atmosphere to the landscape, inviting residents and visitors alike to enjoy the fading warmth before the chill begins to set in.

Average September Wind Speed in Cardigan

The chart displays monthly wind speed patterns in Cardigan, 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.
JanFebMarAprMayJunJulAugSepOctNovDec5.96.95.94.25.24.33.64.83.9 m/s6.45.76.4
Data source: Cardigan September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Cardigan Compares to Other Months

The weather in Cardigan 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 Cardigan and find detailed weather information for every month.

In September, temperatures typically range from a minimum of 7°C (44°F) to a maximum of 26°C (78°F), with an average of 15°C (59°F). This month also sees about 112 mm (4.4 in) of precipitation over 15 days and has a humidity level of 79%. In contrast, January experiences cooler weather, with temperatures ranging from 0°C (32°F) to a maximum of 14°C (57°F), and an average temperature of 7°C (45°F). The precipitation in January is slightly lower at 91 mm (3.6 in) over 13 days, and the humidity increases to 88%. For more details on weather patterns, you can refer to Cardigan weather in January.

When comparing the weather in September and February, notable differences emerge. September boasts milder temperatures, with a minimum of 7°C (44°F) and an average of 15°C (59°F), peaking at a comfortable 26°C (78°F). In contrast, February is considerably colder, with lows dropping to -2°C (29°F) and an average temperature of 7°C (45°F), maxing out at 14°C (57°F). Both months see significant rainfall, with September receiving 112 mm (4.4 in) across 15 days and February slightly wetter at 119 mm (4.7 in) over 17 days. Humidity levels also reflect the changing seasons, with September at 79% and February rising to 88%. To learn more about the specific conditions during this month, visit Cardigan weather in February.

September and March showcase contrasting weather patterns, reflecting the transition from summer to autumn and the approach of spring, respectively. In September, temperatures range from a minimum of 7°C (44°F) to a maximum of 26°C (78°F), with an average of 15°C (59°F) and a relatively high humidity of 79%. Precipitation is moderate, totaling 112 mm (4.4 in) over 15 days. In contrast, March is much cooler, with temperatures dipping to a minimum of -4°C (24°F) and a maximum of 16°C (61°F), yielding an average of 7°C (46°F). Although March sees slightly less precipitation at 104 mm (4.1 in), it experiences rainfall over a greater number of days—17 in total—and the humidity rises to 86%. For a more detailed look at weather specifics, you can check out Cardigan weather in March.

When comparing the weather in September and April, notable differences emerge. September boasts a warmer temperature range, with minimums around 7°C (44°F) and maximums reaching up to 26°C (78°F), while April's temperatures are cooler, ranging from a minimum of 1°C (35°F) to a maximum of 20°C (68°F). Additionally, September experiences higher precipitation at 112 mm (4.4 in) over 15 days compared to April's 61 mm (2.4 in) over 10 days. Humidity levels are quite similar, with September at 79% and April slightly higher at 84%. For a detailed look at April's weather in Cardigan, you can visit Cardigan weather in April.

In comparing the weather of September and May, September generally offers warmer temperatures, with a minimum of 7°C (44°F) and a maximum of 26°C (78°F), compared to May's minimum of 4°C (39°F) and maximum of 22°C (72°F). While both months experience relatively high humidity, September's humidity stands at 79% compared to May's 80%. Additionally, September sees more precipitation, with 112 mm (4.4 in) over 15 days, whereas May has 73 mm (2.9 in) over 11 days. For a closer look at what to expect, you can check Cardigan weather in May.

In comparing the weather of September and June, September tends to be slightly warmer with average daytime temperatures reaching up to 15°C (59°F), while June has a slightly lower average of 14°C (58°F). Both months experience comparable minimum temperatures, with September at 7°C (44°F) and June at 8°C (47°F). However, September also boasts a higher maximum temperature of 26°C (78°F) compared to June's maximum of 24°C (75°F). In terms of precipitation, September sees a bit more rainfall with 112 mm (4.4 in) over 15 days, while June has 95 mm (3.7 in) during the same number of days. Humidity levels are fairly similar, with September at 79% and June at 80%. For more detailed insights, check out Cardigan weather in June.

In comparing the weather between September and July, September tends to be slightly cooler, with average temperatures ranging from a minimum of 7°C (44°F) to a maximum of 26°C (78°F), while July enjoys warmer temperatures, with a minimum of 10°C (50°F) and a maximum of 25°C (78°F). Additionally, September experiences more precipitation, totaling 112 mm (4.4 in) across 15 days, compared to July's 81 mm (3.2 in) over 12 days. The humidity also rises in September to 79%, compared to July’s 70%, making September feel more humid despite its cooler average temperatures. For more details, you can check Cardigan weather in July.

September weather showcases a notable shift compared to August, with average temperatures slightly decreasing from 16°C (61°F) in August to 15°C (59°F) in September. The minimum temperature in September dips to 7°C (44°F), making it feel cooler overall as summer transitions to autumn. Interestingly, while August has a maximum temperature of 23°C (74°F), September reaches up to 26°C (78°F), highlighting some warmer days despite the cooler average. Precipitation is also slightly less in September, at 112 mm (4.4 in) over 15 days compared to August’s 117 mm (4.6 in) across 16 days, although humidity remains relatively high at 79% in September versus 73% in August. For a closer look at August weather in Cardigan, visit Cardigan weather in August.

In comparing the weather of September and October, it's clear that October brings a noticeable drop in temperatures. September enjoys mild conditions with an average of 15°C (59°F) and maximum highs reaching 26°C (78°F), whereas October sees a cooler average of 12°C (54°F) and maximums that don’t exceed 20°C (68°F). Precipitation also increases from 112 mm (4.4 in) over 15 days in September to 149 mm (5.9 in) over 19 days in October, indicating a wetter month. Furthermore, humidity rises slightly, peaking at 89% in October compared to 79% in September. For more detailed information, you can visit Cardigan weather in October.

September typically enjoys warmer temperatures, with a range from a mild 7°C (44°F) to a pleasant maximum of 26°C (78°F), while November sees a notable drop, with temperatures ranging from 2°C (36°F) to a max of 15°C (60°F). Rainfall is more frequent in November, accumulating to 149 mm (5.9 in) over 20 days, compared to September's 112 mm (4.4 in) over 15 days. Moreover, humidity levels also increase in November, reaching 90% compared to September's 79%, making the weather feel colder and more damp. For detailed insights, you can check Cardigan weather in November.

In September, temperatures range from a cool 7°C (44°F) at night to a warm 26°C (78°F) during the day, with an average of 15°C (59°F). The month sees moderate rainfall, with 112 mm (4.4 in) over approximately 15 days and humidity levels around 79%. In contrast, December brings much colder conditions, with temperatures dropping significantly to a minimum of 1°C (35°F) and a maximum of 13°C (56°F), averaging just 8°C (47°F). Precipitation also increases, totaling 173 mm (6.8 in) across about 23 days, along with higher humidity at 89%. For more detailed information, you can check Cardigan weather in December.

Compare Cardigan's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Cardigan

As September unfolds in Cardigan, the weather reflects a delightful transition from the warmth of summer to the crispness of autumn. While maximum temperatures can still reach a pleasant 26°C (78°F), the average cools to a comfortable 15°C (59°F), providing a refreshing change. However, the month does come with its share of rain, accumulating around 112 mm over approximately half the days, contributing to a 79% humidity level that can make the air feel quite damp. This blend of warmth and moisture sets September apart from the hotter summer months, creating an inviting atmosphere perfect for exploring the lush landscapes of Cardigan. For a deeper understanding of what to expect throughout the year, visit Cardigan Climate.