September Weather in Folkestone, United Kingdom

Last updated: March 17, 2025

September in Folkestone, United Kingdom, is characterized by mild temperatures and a noticeable touch of autumn. With a maximum of 22°C (71°F) and an average of 17°C (62°F), the month offers a comfortable climate for both locals and visitors. However, evenings can be cooler, dipping to a minimum of 10°C (50°F). Rainfall is not uncommon, with 64 mm (2.5 in) spread across approximately 10 days, contributing to the region's lush greenery. The humidity, averaging around 80%, adds a soft, misty feel to the coastal scenery, making September a unique time to explore Folkestone's charms amidst the transitional weather.

September Temperature in Folkestone

As September unfolds in Folkestone, temperatures begin to reflect the transition from summer to autumn. The minimum temperature settles at a comfortable 10°C (50°F), while the average climbs to 17°C (62°F), maintaining a pleasant warmth that's ideal for outdoor activities. The maximum temperature, reaching up to 22°C (71°F), hints at the lingering warmth of summer days. Compared to the preceding months, September offers a gentle cooldown while still enticing visitors with mild weather, making it a delightful time to explore the coastal charm of this picturesque town. As autumn approaches, the crispness in the air adds a refreshing touch, inviting all to enjoy the beauty of Folkestone's scenery.

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

The chart illustrates September temperature patterns in Folkestone, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec444546485359636462575147
Data source: Temperature data for Folkestone 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 Folkestone

In September, Folkestone experiences a notable shift as precipitation levels settle at 64 mm (2.5 in) over approximately 10 days of rain, indicating a gradual transition towards the wetter months ahead. This amount, while slightly less than the previous month’s total of 70 mm, signals the start of the season where rainfall begins to increase as autumn sets in. The pattern reflects a dampening trend seen in the preceding summer months, contrasted sharply with the heavier rainfall that follows in October and November. As the days grow shorter and the temperatures cool, Folkestone residents can expect a more frequent, if gentle, rhythm of damp weather that not only nourishes the landscape but also prepares the region for the bolder torrents of late autumn.

September Precipitation Trends in Folkestone

The chart displays monthly precipitation patterns in Folkestone, 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.
JanFebMarAprMayJunJulAugSepOctNovDec908971275856517164133112150
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Folkestone

In September, Folkestone, United Kingdom, experiences a relative humidity of 80%, marking a slight increase from the drier summer months of July and August, which recorded 76% and 73% humidity, respectively. This rise signifies the transition into the wetter autumn season, where humidity levels typically climb again, reaching 89% in October and peaking at 92% during the winter months of November and December. Overall, the month of September serves as a bridge, blending the fading warmth of summer with the cooler, more humid conditions of fall, reflecting the gradual shift in the coastal climate of this charming town.

September Average Humidity in Folkestone

This chart illustrates the average monthly humidity levels in Folkestone, 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.
JanFebMarAprMayJunJulAugSepOctNovDec91%89%86%85%82%81%76%73%80%89%92%92%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Folkestone

As September rolls into Folkestone, the UV Index dips to 5, indicating a moderate exposure level and a burn time of 30 minutes. This month marks a transition from the summer highs, where July and June saw very high levels of 8, pushing sun-seekers to seek shade more avidly. As temperatures start to cool, the UV Index reflects a steady decline, settling to levels similar to those observed in the early spring. It's a gentle reminder that while the sun's intensity decreases, protective measures are still warranted during outdoor activities. For more details on the UV Index trends throughout the year, visit Folkestone UV Index.

Maximum UV Index Levels in Folkestone for September

The chart shows the monthly maximum UV Index (UVI) for Folkestone 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: Folkestone 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 Folkestone

September in Folkestone unveils a delightful transition into the autumn season, showcasing 326 hours of sunshine. Though this marks a decline from the sun-drenched peaks of July and June, it remains a significant amount, welcoming the cozy vibes of fall while retaining a generous brightness. The month stands out as a time of moderate warmth and golden light, creating an inviting atmosphere for outdoor activities. As the year progresses, sunny hours steadily decrease, dipping from the heights of summer yet still offering a beautiful backdrop for those lingering moments before the chill of October sets in. Overall, September captures the essence of late summer while hinting at the changes ahead, encouraging residents and visitors alike to relish every sunny moment.

Monthly Sunshine Duration in Folkestone: September Highlighted

The September sunshine duration represents the total number of hours Folkestone 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.
JanFebMarAprMayJunJulAugSepOctNovDec95h157h234h351h414h416h422h398h326h248h163h117h
Data source: Folkestone September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Folkestone During September

In Folkestone, September offers a 40% chance of sunny weather, making it a delightful time for outdoor activities as summer lingers on. Looking at the yearly trend, this percentage mirrors August's sunny disposition and marks a notable rise since the early months of the year, where sunshine probabilities range from a mere 19% in January to 39% in May. As the autumn months approach, the likelihood of clear skies begins to wane, dropping to 30% in October and further declining through the winter. Thus, September stands out as one of the last good opportunities to soak up some sun before the clouds of autumn fully take over.

Percentage of Sunny Days in September in Folkestone

The chart illustrates the percentage of sunny days in Folkestone 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 Folkestone experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec19%26%39%52%39%33%42%40%40%30%28%19%
Data source: Folkestone September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Folkestone in September

As summer gives way to autumn in Folkestone, United Kingdom, September sees a gradual reduction in daylight hours, averaging 12 hours of light each day. This transition follows a peak in June, where daylight stretches to a vibrant 16 hours, and is followed by a steady decline into the cooler months. While September still enjoys a generous amount of sunlight compared to the winter months—10 hours in October and dwindling to just 8 hours in November—the shift signals the approach of shorter days. The month serves as a gentle reminder of nature's rhythm, blending the lingering warmth of late summer with the crisp beginnings of fall.

Average Daylight Hours in Folkestone for September

The chart illustrates the variation in daylight duration in Folkestone throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 27m10h11h 55m13h 52m15h 34m16h 28m15h 59m14h 27m12h 34m10h 38m8h 53m7h 57m
Data source: Folkestone daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Folkestone

As September unfolds in Folkestone, the coastal breezes begin to shift, with an average wind speed of 5.6 m/s (12 mph) marking a gentle transition from the intensity of summer. This month often features a noticeable drop in wind speed compared to the blustery heights of January and February, peaking at 7.8 m/s (17 mph) and falling to their lowest in June, where currents linger at 4.6 m/s (10 mph). Interestingly, September's winds remain a comfortable middle ground, slightly stronger than the peak summer months, suggesting a refreshing yet mild atmosphere perfect for seaside strolls. As the autumn approaches, wind speeds begin to rise again in October, hinting at the impending seasonal changes, making September a sweet spot for those who enjoy the interplay of warm days and brisk winds along the tranquil shoreline.

Average September Wind Speed in Folkestone

The chart displays monthly wind speed patterns in Folkestone, 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.
JanFebMarAprMayJunJulAugSepOctNovDec7.27.86.86.26.54.65.46.45.6 m/s7.76.57.6
Data source: Folkestone September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Folkestone Compares to Other Months

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

September offers a mild climate with average temperatures ranging from a minimum of 10°C (50°F) to a maximum of 22°C (71°F), making it a pleasant time for outdoor activities. In contrast, January brings much colder conditions, with average temperatures between -1°C (31°F) and 13°C (55°F), creating a stark change in the weather. Additionally, September experiences about 64 mm (2.5 in) of precipitation over approximately 10 days, while January sees increased rainfall of 90 mm (3.5 in) spread across 13 days, resulting in a damp and chilly atmosphere. The humidity is also higher in January at 91%, compared to 80% in September. For more details, you can check Folkestone weather in January.

September and February present contrasting weather conditions. In September, temperatures typically range from a minimum of 10°C (50°F) to a maximum of 22°C (71°F), with an average of 17°C (62°F). The month experiences around 64 mm (2.5 in) of precipitation over approximately 10 days, and humidity levels hover around 80%. Conversely, February is much cooler, with minimum temperatures dropping to -2°C (29°F) and a maximum of 12°C (54°F), yielding an average of 7°C (45°F). Precipitation increases to 89 mm (3.5 in) across about 15 days, and humidity rises slightly to 89%. For more detailed information about February weather, visit Folkestone weather in February.

In September, the weather tends to be milder, with temperatures ranging from a minimum of 10°C (50°F) to a maximum of 22°C (71°F) and an average of 17°C (62°F). The month experiences about 64 mm (2.5 in) of precipitation over approximately 10 days, with humidity levels around 80%. In contrast, March brings cooler temperatures, with a minimum of -2°C (29°F) and a maximum of 16°C (62°F), averaging only 8°C (46°F). This month sees slightly more precipitation, totaling 71 mm (2.8 in) over 13 days, along with higher humidity at 86%. For a more detailed look at March weather, you can visit Folkestone weather in March.

When comparing the weather in September and April, there are notable differences in temperature and precipitation. September enjoys milder temperatures, with averages around 17°C (62°F) and highs reaching up to 22°C (71°F), while April is cooler, averaging only 9°C (49°F) and maxing out at 17°C (63°F). Additionally, September experiences more rainfall, with 64 mm (2.5 in) over about 10 days, compared to April's 27 mm (1.1 in) spread over just 6 days. The humidity levels are quite similar, hovering around 80% in September and 85% in April, making both months feel relatively damp. For more details on April weather, you can visit Folkestone weather in April.

When comparing the weather in September and May, September tends to be warmer with an average temperature of 17°C (62°F), while May offers a cooler average of 12°C (54°F). The maximum temperature in September reaches 22°C (71°F), just slightly above May's high of 21°C (70°F). Both months experience similar levels of precipitation, with September receiving 64 mm (2.5 in) and May a bit less at 58 mm (2.3 in), each spread over about 10 rainy days. Humidity levels are also comparable, with September at 80% and May slightly higher at 82%. For more details, you can refer to Folkestone weather in May.

When comparing the weather in September and June, we observe some interesting similarities and differences. Both months feature a minimum temperature around 10°C, with September boasting a slightly higher average at 17°C compared to June's 15°C. However, both months peak at a maximum of 22°C. In terms of precipitation, September receives a bit more rain with 64 mm over 10 days, while June sees less precipitation at 56 mm across 8 days. Additionally, humidity is quite comparable, hovering around 80% in September and 81% in June. For those interested in diving deeper into June's weather specifics, you can check out Folkestone weather in June.

In comparing the weather between July and September, July tends to be warmer, with minimum temperatures averaging 13°C (56°F) and maximums reaching up to 28°C (82°F). This contrasts with September, which experiences cooler nights with a minimum of 10°C (50°F) and a maximum of 22°C (71°F). While both months share a similar average temperature of around 17°C (63°F), September sees slightly more rainfall with 64 mm (2.5 in) of precipitation over 10 days, compared to July's 51 mm (2.0 in) over 9 days. Additionally, September has a higher humidity level at 80%, compared to July's 76%. For more details on July's weather, you can refer to Folkestone weather in July.

When comparing the weather in September to August, it’s clear that September tends to be slightly cooler and wetter. September features a minimum temperature of 10°C (50°F), an average of 17°C (62°F), and a maximum of 22°C (71°F), while August has a higher minimum of 12°C (53°F), an average of 18°C (64°F), and a notable maximum of 26°C (78°F). Additionally, September sees a bit more precipitation with 64 mm (2.5 in) over 10 days, compared to August's 70 mm (2.8 in) over the same number of days, although it is slightly less humid at 80% compared to August’s 73%. For more details on August weather, you can check Folkestone weather in August.

September features milder temperatures with a minimum of 10°C (50°F) and an average of 17°C (62°F), while October brings a cooler minimum of 7°C (45°F) and an average of 14°C (58°F). The maximum temperature in September reaches 22°C (71°F), slightly higher than October's peak of 21°C (69°F). However, October is notably wetter, experiencing 133 mm (5.2 in) of precipitation over 17 days compared to September’s 64 mm (2.5 in) over 10 days. Additionally, humidity rises in October to 89%, up from September's 80%, making it feel noticeably more damp. For detailed weather comparisons, check out Folkestone weather in October.

In comparing the weather between September and November, there are notable differences in temperature and precipitation. September enjoys milder temperatures, ranging from a minimum of 10°C (50°F) to a maximum of 22°C (71°F), with an average of 17°C (62°F). This month typically experiences less rain, totaling 64 mm (2.5 in) over about 10 days, and a humidity level around 80%.

In contrast, November sees a drop in temperatures, where the minimum dips to 3°C (38°F) and the maximum reaches only 16°C (62°F), averaging 10°C (51°F). This month is characterized by increased rainfall, accumulating to 112 mm (4.4 in) over approximately 17 days, accompanied by higher humidity at 92%. For more details on November's weather, you can visit Folkestone weather in November.

In September, temperatures are generally mild, with a minimum of 10°C (50°F) and an average of 17°C (62°F), peaking at a comfortable 22°C (71°F). The month sees about 64 mm (2.5 in) of precipitation spread over 10 days, and humidity levels hover around 80%. In contrast, December brings significantly cooler weather, with temperatures dropping to a minimum of 2°C (35°F) and an average of just 8°C (47°F), reaching a maximum of 14°C (57°F). This month experiences a much higher rainfall of 150 mm (5.9 in) over 19 days, accompanied by increased humidity at 92%. To get a better understanding of the December climate, check out Folkestone weather in December.

Compare Folkestone's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Folkestone

As September unfolds in Folkestone, it marks a transition from the warmer summer months to a cooler autumn ambiance. With average temperatures settling around a comfortable 17°C, the weather feels pleasant, although the chance of rain becomes more prominent, manifesting in around 10 days of rainfall. The humidity levels rise to about 80%, adding a slight mugginess to the air, which is a shift from the drier summer months. This blend of mild temperatures and increased precipitation creates a unique charm in September, making it a perfect time for those who enjoy the softness of early autumn. For more insights on what to expect throughout the year, visit Folkestone Climate.