September Weather in Knaresborough, United Kingdom

Last updated: March 17, 2025

September in Knaresborough offers a delightful mix of mild warmth and refreshing showers. With a maximum temperature peaking at 27°C (81°F) and an average of 13°C (57°F), the early autumn days can feel pleasantly warm, while the nights can dip down to a minimum of 3°C (38°F). This month also sees 67 mm (2.6 in) of precipitation spread across approximately 12 days, contributing to a humidity level of around 85%. Whether you’re exploring the charming streets or relaxing by the River Nidd, September's weather is sure to bring a blend of cozy and crisp moments in this picturesque UK town.

September Temperature in Knaresborough

In Knaresborough, September ushers in a delightful transition from the warmth of summer to the crispness of autumn. With minimum temperatures around 3°C (38°F) and averages peaking at 13°C (57°F), the month offers a pleasant reprieve from the heat of July and August, which see highs reaching 33°C (92°F) and 30°C (87°F) respectively. As the maximum temperatures settle at a comfortable 27°C (81°F), it's an ideal time for outdoor activities amid the vibrant changing foliage. This month marks a shift, showcasing cooler mornings and evenings, yet still embracing the lingering warmth of summer, making it a charming time to explore the beauty of Knaresborough.

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

The chart illustrates September temperature patterns in Knaresborough, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec404143465258616156514541
Data source: Temperature data for Knaresborough 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 Knaresborough

September in Knaresborough sees an average precipitation of 67 mm (2.6 in) over approximately 12 days, marking a shift as summer wanes and autumn approaches. This month continues the trend of relatively consistent rainfall, typical for the season, although it is less than the wettest months of June and October. With precipitation levels dipping slightly from the summer months, September offers a balanced blend of sunny spells interspersed with refreshing showers, creating a lush and vibrant landscape. The continual cycle of rainy days, seen throughout the year, highlights the region's rich and dynamic hydrology, ensuring that Knaresborough remains a picturesque and green haven for both residents and visitors alike.

September Precipitation Trends in Knaresborough

The chart displays monthly precipitation patterns in Knaresborough, 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.
JanFebMarAprMayJunJulAugSepOctNovDec548274396181757867906279
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Knaresborough

In September, Knaresborough typically experiences a humidity level of 85%, which marks a slight increase from the drier summer months of July and August, where humidity dipped to 76% and 77%, respectively. This rise suggests the onset of autumn, as the air begins to retain more moisture in anticipation of the wetter months that follow. As temperatures gradually cool, Knaresborough's humidity trends upward once again, paving the way for October's return to the characteristic 90% levels seen in winter months. Overall, September serves as a bridge from the summer's warmth to the crisp, moisture-laden air of fall, encapsulating the changing seasons in this charming UK town.

September Average Humidity in Knaresborough

This chart illustrates the average monthly humidity levels in Knaresborough, 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.
JanFebMarAprMayJunJulAugSepOctNovDec90%88%86%84%80%81%76%77%85%90%92%90%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Knaresborough

As September arrives in Knaresborough, the UV Index reflects a shift towards a more moderate sun exposure, registering at 5—a drop from the peak levels seen in the summer months. This moderate level means that while there's still potential for sunburn, particularly with prolonged exposure, residents and visitors can enjoy the beautiful early autumn days with a reduced risk compared to the scorching heat of July and June, when the index hit 8. With a burn time of approximately 30 minutes, it’s a perfect time to savor outdoor activities while remembering to apply sunscreen. As the year progresses towards the cooler months, the UV Index will continue to decline, making September a comfortable transition for sun seekers. For more detailed information, check out the Knaresborough UV Index.

Maximum UV Index Levels in Knaresborough for September

The chart shows the monthly maximum UV Index (UVI) for Knaresborough 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.
JanFebMarAprMayJunJulAugSepOctNovDec123578875321
Data source: Knaresborough 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 Knaresborough

In Knaresborough, United Kingdom, September embraces a delightful blend of late summer warmth and early autumn charm, offering 291 hours of sunshine. This marks a noticeable decline from the sun-drenched peak of July with 396 hours, yet showcases a respectable glow compared to the brisk start of the year. As the days grow shorter, the transition from the previous month’s 359 hours reinforces the natural rhythm of the seasons, as September bids farewell to the summer solstice. Notably, this month still shines brighter than the chilly onset of autumn in October, which sees just 227 hours. This gradual shift provides a perfect backdrop for autumnal outings, allowing residents and visitors alike to savor the last traces of summer before the winter months settle in.

Monthly Sunshine Duration in Knaresborough: September Highlighted

The September sunshine duration represents the total number of hours Knaresborough 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.
JanFebMarAprMayJunJulAugSepOctNovDec81h140h210h317h386h358h396h359h291h227h119h96h
Data source: Knaresborough September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Knaresborough During September

As September rolls into Knaresborough, the likelihood of sunny weather hovers around 25%, mirroring the relatively modest chances seen in the previous months of August and July. This trend reflects a gradual shift from the brighter days of late spring, where sunny opportunities peaked at 48% in April, to a more temperate climate as the year transitions into autumn. Although September does not boast the sunniest reputation, it’s a reminder of the evolving seasons, as the potential for crisp, clear days persists. With weather patterns becoming less predictable, Knaresborough’s September is a perfect blend of mild warmth and the burgeoning hints of fall, setting the stage for both lingering outdoor activities and cozy indoor comforts.

Percentage of Sunny Days in September in Knaresborough

The chart illustrates the percentage of sunny days in Knaresborough 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 Knaresborough experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec21%25%23%48%30%27%34%24%25%21%30%17%
Data source: Knaresborough September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Knaresborough in September

As September unfolds in Knaresborough, the days start to shorten, signaling the transition from the long, sun-drenched hours of summer to the briskness of autumn. With 12 hours of daylight, September still offers a generous amount of sunlight, though it marks a noticeable decrease from August’s 14 hours. This trend of diminishing daylight is part of a seasonal cycle, beginning with the vibrant 17 hours in June and gradually tapering off into the darker months of October and November. While the days may be growing shorter, September's golden light provides a perfect backdrop for the changing colors of the landscape, inviting residents and visitors alike to savor the last warm evenings before the chill of winter sets in.

Average Daylight Hours in Knaresborough for September

The chart illustrates the variation in daylight duration in Knaresborough throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 2m9h 46m11h 54m14h 4m15h 59m17h16h 27m14h 44m12h 37m10h 28m8h 31m7h 28m
Data source: Knaresborough daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Knaresborough

As summer gives way to autumn in Knaresborough, September ushers in the start of a transition in wind patterns. With an average wind speed of 3.5 m/s (8 mph), September's breezes mirror those of the preceding month, creating a gentle atmosphere that is ideal for exploring the picturesque streets and stunning views of this historic town. This marks a notable decline from the peak summer months—particularly July, which recorded the lightest winds at 2.7 m/s (6 mph). Yet, as the year progresses toward October, when winds pick up again to 4.8 m/s (11 mph), September serves as a calm precursor, inviting both locals and visitors to enjoy the serene landscapes before the winds return to their brisker pace.

Average September Wind Speed in Knaresborough

The chart displays monthly wind speed patterns in Knaresborough, 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.
JanFebMarAprMayJunJulAugSepOctNovDec4.34.84.73.23.43.22.73.53.5 m/s4.84.84.1
Data source: Knaresborough September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Knaresborough Compares to Other Months

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

In September, temperatures range from a cool minimum of 3°C (38°F) to a warm maximum of 27°C (81°F), with an average of 13°C (57°F). The month experiences about 67 mm (2.6 in) of precipitation over roughly 12 days, coupled with a relative humidity of 85%. In contrast, January brings significantly colder weather, with temperatures dipping to a minimum of -5°C (24°F) and peaking at 14°C (57°F), averaging 4°C (40°F). It receives slightly less precipitation at 54 mm (2.1 in) across around 10 days, and the humidity rises to 90%. For more details on January conditions, you can check Knaresborough weather in January.

September and February weather present a stark contrast in temperature and precipitation patterns. In September, temperatures range from a refreshing 3°C (38°F) at night to a pleasant average of 13°C (57°F) during the day, peaking at a warm 27°C (81°F). The month experiences about 67 mm (2.6 in) of rain over approximately 12 days, with humidity averaging around 85%. In contrast, February is much chillier, with a minimum temperature of -6°C (22°F) and a daytime average of only 5°C (41°F), peaking at 17°C (63°F). This month sees slightly higher precipitation at 81 mm (3.2 in) across 14 days, coupled with a slightly higher humidity at 88%. For more detailed insights on February weather, check out Knaresborough weather in February.

In comparing the weather between September and March, notable differences emerge. September typically boasts milder temperatures, with averages ranging from a minimum of 3°C (38°F) to a maximum of 27°C (81°F), resulting in a comfortable average of 13°C (57°F). The precipitation during this month totals about 67 mm (2.6 in) over approximately 12 days, and humidity levels are relatively high at 85%.

In contrast, March experiences cooler conditions, with temperatures ranging from a minimum of -6°C (22°F) to a maximum of 19°C (66°F), yielding a lower average of 6°C (44°F). Although March sees slightly more precipitation at 74 mm (2.9 in) and more rainy days (14), the humidity remains comparable at 86%. This shift from the warm, humid September weather to the brisk, variable climate of March is evident. For more detailed insights on the conditions, you can check Knaresborough weather in March.

When comparing the weather in September and April, we observe notable differences in temperature and precipitation patterns. September typically enjoys milder temperatures, with averages ranging from a minimum of 3°C (38°F) to a maximum of 27°C (81°F), while April's temperatures are cooler, ranging from -3°C (27°F) to a maximum of 23°C (74°F). In terms of precipitation, September sees more rainfall at 67 mm (2.6 in) over 12 days, compared to April's 39 mm (1.5 in) over 8 days. Both months exhibit high humidity levels, with September slightly higher at 85% compared to April's 84%. For more details on April weather specifics, visit Knaresborough weather in April.

When comparing the weather in September and May, notable differences can be observed in temperature and humidity. September generally has a wider temperature range, with minimums of 3°C (38°F) and maximums reaching 27°C (81°F), while May starts off cooler, with minimum temperatures dropping to -1°C (30°F) and a maximum of 25°C (77°F). However, both months see similar levels of precipitation, with September experiencing 67 mm (2.6 in) over 12 days and May slightly less at 61 mm (2.4 in) over the same number of days. Additionally, humidity is relatively high in both months, with September showing 85% compared to May's 80%. To learn more about May weather patterns, you can visit Knaresborough weather in May.

In comparing the weather of September and June, we see some interesting similarities and differences. Both months experience comfortable maximum temperatures, peaking at around 27°C (81°F) in September and 27°C (82°F) in June. However, September tends to be slightly cooler on average, with temperatures ranging from a minimum of 3°C (38°F) to an average of 13°C (57°F), while June starts a bit warmer with a minimum of 5°C (41°F) and an average of 14°C (58°F). In terms of precipitation, June is wetter, receiving about 81 mm (3.2 in) compared to September's 67 mm (2.6 in), although both months see rain on approximately 12 days. Additionally, September's humidity is slightly higher at 85% versus June's 81%, contributing to the overall feel of the weather. For more details, check out Knaresborough weather in June.

Comparing the weather in September to that of July, we notice significant differences in temperature and humidity. September tends to be milder, with minimum temperatures around 3°C (38°F) and maximums reaching 27°C (81°F), while July is warmer, ranging from a minimum of 7°C (45°F) to a maximum of 33°C (92°F). Additionally, July has a lower humidity level of 76%, compared to September's higher 85%. Precipitation is also slightly more prevalent in July, with 75 mm (2.9 in) over 13 days, while September records 67 mm (2.6 in) over 12 days. For more detailed insights, check out Knaresborough weather in July.

In comparing the weather between September and August, we can see a noticeable shift in temperature and precipitation. September features cooler temperatures with a minimum of 3°C (38°F) and an average of 13°C (57°F), compared to August’s milder lows of 7°C (45°F) and an average of 16°C (61°F). The maximum temperatures also decline, with September peaking at 27°C (81°F) versus August’s 30°C (87°F). Additionally, September experiences slightly less precipitation overall, with 67 mm (2.6 in) falling on 12 days, in contrast to August’s 78 mm (3.1 in) over 14 days. Humidity remains higher in September at 85%, while August records a lower 77%. For more detailed insights on August weather, you can visit Knaresborough weather in August.

September generally features warmer temperatures compared to October, with a minimum of 3°C (38°F) and an average of 13°C (57°F), peaking at 27°C (81°F). In contrast, October sees cooler weather, with minimum temperatures dropping to -1°C (31°F) and an average of 11°C (51°F), and a maximum of 21°C (71°F). Additionally, October experiences slightly more rainfall, totaling 90 mm (3.5 in) over 15 days, compared to September's 67 mm (2.6 in) across 12 days. Humidity levels also rise in October, averaging 90% compared to September's 85%. For more details on the weather patterns, you can visit Knaresborough weather in October.

In September, temperatures range from a minimum of 3°C (38°F) to a maximum of 27°C (81°F), with an average of 13°C (57°F). The month typically sees around 67 mm (2.6 in) of precipitation over 12 days, with humidity levels at a comfortable 85%. In contrast, November experiences colder weather, with temperatures dropping to a minimum of -3°C (27°F) and an average of 7°C (45°F), peaking at 17°C (62°F). Precipitation is slightly lower at 62 mm (2.4 in), spread over 13 days, and humidity increases to a notable 92%. For more details on what to expect, check out Knaresborough weather in November.

September and December present distinctly different 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 13°C (57°F). The month typically sees around 67 mm (2.6 in) of precipitation over about 12 days, with humidity levels hovering around 85%. Conversely, December experiences colder conditions, with temperatures dipping to a low of -5°C (24°F) and an average temperature of 5°C (42°F), reaching up to a maximum of 13°C (57°F). Precipitation increases slightly to 79 mm (3.1 in) over approximately 14 days, while humidity rises to 90%. For more detailed information on this colder month, visit Knaresborough weather in December.

Compare Knaresborough's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Knaresborough

As September unfolds in Knaresborough, the weather takes on a dynamic character, transitioning from the summer warmth into the cooler embrace of autumn. With maximum temperatures reaching a pleasant 27°C, the month retains a hint of summer's warmth, yet averages drop to a mild 13°C as cool nights creep in. The rainfall, averaging 67 mm over about 12 days, introduces a noticeable increase in humidity, which lingers at around 85%. This blend of warmth and moisture makes September a unique month, contrasting sharply with the drier, hotter days of summer and the crispness of October. For a deeper dive into what the seasons have to offer, explore our insights on Knaresborough Climate.