Last updated: March 17, 2025
September in Derby, United Kingdom offers a blend of mild warmth and occasional rain, making it a transition month as summer fades. The month boasts a maximum temperature of 28°C (83°F), with an average of 14°C (57°F) that ensures pleasant days. However, be prepared for cooler evenings, with temperatures dipping to a minimum of 3°C (37°F). Rainfall is common during this period, totaling 62 mm (2.5 in) across approximately 11 days, contributing to the region's lush greenery. With a humidity level of 85%, the air feels refreshing yet may be slightly sticky, creating typical early autumn conditions.
In Derby, United Kingdom, September marks a delightful transition into autumn, where temperatures begin to cool but still retain a hint of summer's warmth. With minimum temperatures averaging around 3°C (37°F) and maximums reaching as high as 28°C (83°F), the month presents a comfortable average of 14°C (57°F). This moderate climate allows for enjoyable outdoor activities, as the lingering warmth from summer lingers just enough to curve the edge off the cooler mornings. As daylight hours decrease and the days become shorter, the vibrant hues of fall foliage start to emerge, making September a beautiful month in Derby. Overall, it’s a perfect time to embrace the stunning landscapes and experience the charm of the city as it gradually shifts into the crispness of autumn.
September in Derby, United Kingdom, brings a moderate precipitation amount of 62 mm (2.5 in) over 11 days, setting the stage for the transition into autumn. This month marks a slight decline from the summer months of July (80 mm) and August (76 mm), yet it remains above the drier April, which recorded only 39 mm. The consistent rainfall patterns suggest that while September ushers in cooler temperatures, it also sustains the lush greenery characteristic of the region. As the year progresses, Derby typically experiences an increase in precipitation, with October expected to see the highest levels, reaching 85 mm (3.3 in). This steady rhythm of rainfall reflects Derby's rich climatic tapestry as it moves towards the wetter months ahead.
As summer fades, September in Derby, United Kingdom, often brings a noticeable shift in humidity, averaging around 85%. This marks a rise from the drier values seen in the summer months of July and August, which recorded 76% and 77% respectively. The transition into autumn is marked by increasing moisture in the air, as the region prepares for the more humid months ahead, with October and November reaching 90% and 92%. Observing the trend, it's clear that humidity levels in Derby are highest during the winter months, but September serves as a gentle reminder of the impending seasonal changes, blending a bit of summer's warmth with the coolness of fall.
As September arrives in Derby, the UV Index stands at 5, categorizing sun exposure as moderate. This marks a dip from the peak summer months of July and August, where the index reached 8 under very high exposure levels. The transition to early autumn continues to encourage outdoor activities while still necessitating caution, with a burn time of approximately 30 minutes for unprotected skin. This pattern shows a gradual decrease in UV intensity as the days shorten, inviting residents to enjoy the pleasant September weather while remaining mindful of sun safety. For more detailed insights about UV levels throughout the year, check out Derby UV Index.
UV Risk Categories
As September rolls into Derby, the city basks in an impressive 271 hours of sunshine, a marked contrast to the dreary winter months that start with just 74 hours in January. This vibrant month is nestled between the sun-drenched summer days, peaking in July and August with 375 and 344 hours respectively, and the cooler, cloudier autumn months, where sunshine dwindles to 211 hours in October. The gradual decline in sunlight hours from the summer's zenith reveals a natural transition, showcasing how September acts as a bridge—offering a last taste of summer's warmth before the shorter days of fall take hold.
As September rolls into Derby, the likelihood of sunny weather offers a modest 27% chance of sunshine, slightly higher than the summer’s final month but notably lower than the spring peak in April, where the sun shines 46% of the time. This transitional month bridges the warmth of summer with the chill of autumn, often presenting a mix of weather conditions. While it's not the sunniest month of the year, September's chances do hint at the lingering joy of summer, making it a great time for outdoor activities amidst the shifting seasons. As daylight begins to dwindle, Derbyites can still hold hope for pleasantly sunny days before the onset of fall.
In September, Derby, United Kingdom, experiences a transition as daylight begins to wane, offering approximately 12 hours of light each day. This marks a gradual decline from the summer's peak, where June and July bask in a generous 16 hours of sunshine. Following the vibrant days of August with its 14 hours of daylight, September serves as a gentle reminder of the approaching autumn, where the days become shorter. As the year progresses, daylight hours will continue to diminish, dipping to 10 hours in October and further reducing to 8 hours by November. This rhythmic shift not only signals the changing seasons but also paints a beautiful tapestry of natural light that embraces Derby throughout the year.
As September settles in Derby, the wind whispers a gentle 3.5 m/s (8 mph), marking a subtle ebb in the breeze compared to the vibrant gusts of earlier months. Following the summer's languid air, this month brings a mild shift, reflecting a gradual decline in wind speed that began in July, where gusts first dipped below the 3 m/s mark. Yet, September still holds a touch of summer's lingering warmth before the sharper October winds, which ramp up to 5.1 m/s (12 mph), emerge. This transitional month invites a tranquil ambiance, contrasting with the brisker climate that follows, making it a perfect time for leisurely strolls as the leaves begin their colorful descent.
The weather in Derby 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 Derby and find detailed weather information for every month.
In September, the weather is significantly warmer with temperatures ranging from a minimum of 3°C (37°F) to a maximum of 28°C (83°F) and an average of 14°C (57°F). The month receives about 62 mm (2.5 in) of precipitation over 11 days, accompanied by a humidity level of 85%. In contrast, January exhibits much cooler conditions, with temperatures dropping to a minimum of -4°C (25°F) and only reaching a maximum of 14°C (58°F), averaging just 4°C (40°F). Precipitation is slightly lower at 56 mm (2.2 in) over 10 days, with humidity peaking at 90%. For a detailed look at the winter conditions, check out Derby weather in January.
September and February present markedly different weather conditions. In September, temperatures range from a minimum of 3°C (37°F) to a maximum of 28°C (83°F), with an average of 14°C (57°F), making it generally warmer. The month sees about 62 mm (2.5 in) of precipitation over 11 days and boasts a relatively high humidity level of 85%. In contrast, February is much colder, with temperatures fluctuating between -5°C (23°F) and 17°C (63°F), averaging around 5°C (42°F). Precipitation during this month is slightly higher at 65 mm (2.6 in) across 12 days, accompanied by even higher humidity at 88%. For more details on February weather, you can check this link: Derby weather in February.
In comparing the weather of September and March, there are notable differences in temperature and conditions. September typically enjoys milder temperatures, ranging from a minimum of 3°C (37°F) to a pleasant average of 14°C (57°F) and can peak at 28°C (83°F). In contrast, March experiences cooler temperatures, with minimums dropping to -7°C (20°F) and an average of 7°C (44°F), reaching a maximum of only 20°C (68°F).
Both months see a fair amount of precipitation, with September having 62 mm (2.5 in) over approximately 11 days, while March has a slightly higher precipitation of 67 mm (2.6 in) occurring over 13 days. Humidity levels remain relatively high in both months, with September at 85% and March at 86%. Overall, September tends to be more temperate and inviting, whereas March can still feel quite wintery. For more details on March weather, visit Derby weather in March.
September and April exhibit significant differences in weather patterns. In September, temperatures range from a cool 3°C (37°F) to a warm 28°C (83°F), with an average of 14°C (57°F), while April sees a more moderate temperature range, with minimums dropping to -2°C (29°F) and maximums reaching 24°C (76°F), averaging around 8°C (48°F). Additionally, September experiences more precipitation, totaling 62 mm (2.5 in) over approximately 11 days, compared to April's 39 mm (1.6 in) over 8 days. Both months maintain high humidity levels, with September at 85% and April slightly lower at 84%. For a closer look at April weather specifics, visit Derby weather in April.
September and May both exhibit mild temperatures, but September tends to be warmer overall. In September, the minimum temperature is 3°C (37°F), reaching an average of 14°C (57°F) and a maximum of 28°C (83°F). In contrast, May starts off cooler, with a minimum of 0°C (32°F) and an average of 12°C (53°F), peaking at 25°C (78°F). While both months receive similar amounts of precipitation—62 mm (2.5 in) in September and 62 mm (2.4 in) in May—September experiences slightly fewer rainy days at 11 compared to May's 12 days. Humidity levels are also marginally higher in September at 85%, compared to May's 80%. For more details about May weather, you can visit Derby weather in May.
In comparing the weather between September and June, September tends to be slightly warmer, with average highs reaching 28°C (83°F) compared to June's maximum of 29°C (84°F). However, June also has a higher minimum temperature of 6°C (44°F) compared to September's 3°C (37°F). Precipitation is somewhat more frequent in June, with rain occurring on 13 days and total precipitation at 74 mm (2.9 in), while September experiences rain on 11 days with a total of 62 mm (2.5 in). Humidity levels are fairly similar, with September at 85% and June at 81%. For more details on June's weather, you can visit Derby weather in June.
In comparing the weather between September and July, September presents cooler temperatures, with a minimum of 3°C (37°F) and an average of 14°C (57°F), compared to July's warmer minimum of 6°C (42°F) and an average of 17°C (63°F). Maximum temperatures in September reach up to 28°C (83°F), while July peaks significantly higher at 35°C (95°F). Additionally, September experiences more frequent precipitation, with rain occurring on 11 days and totaling 62 mm (2.5 in), whereas July has 14 days of rain and a total of 80 mm (3.1 in). The humidity in September is also higher at 85%, compared to July's 76%. For more details on July weather, check out Derby weather in July.
In comparing the weather of September and August, September tends to be cooler with temperatures ranging from a minimum of 3°C (37°F) to a maximum of 28°C (83°F), resulting in an average of 14°C (57°F). In contrast, August experiences milder conditions, with temperatures fluctuating between 8°C (46°F) and 32°C (91°F) and an average of 16°C (62°F). Additionally, September has a slightly higher precipitation level of 62 mm (2.5 in) occurring over 11 days, while August records 76 mm (3.0 in) of rainfall over 13 days. Interestingly, September also sees greater humidity at 85%, compared to August's 77%. For a closer look at August weather conditions, visit Derby weather in August.
September and October present a noticeable shift in weather patterns. In September, temperatures range from a minimum of 3°C (37°F) to a maximum of 28°C (83°F), with an average of 14°C (57°F). The month sees about 62 mm (2.5 in) of precipitation over approximately 11 days, and humidity levels sit at 85%. Conversely, October brings cooler temperatures, starting at a minimum of 0°C (32°F) and reaching a maximum of 22°C (73°F), averaging around 11°C (52°F). Precipitation increases to 85 mm (3.3 in) across 12 days, with humidity rising slightly to 90%. This transition from the warmer, more humid September to the cooler, wetter October can significantly affect outdoor activities and overall comfort. For more detailed information, you can check Derby weather in October.
September and November present quite contrasting weather conditions. In September, temperatures range significantly from a minimum of 3°C (37°F) to a maximum of 28°C (83°F), with an average of 14°C (57°F). The month experiences a moderate level of precipitation at 62 mm (2.5 in) over about 11 days, while humidity sits at 85%. In stark contrast, November ushers in much cooler temperatures, with a minimum of -3°C (26°F) and a maximum of 17°C (62°F), averaging just 7°C (45°F). Precipitation increases slightly to 65 mm (2.6 in) across 14 days, accompanied by a rise in humidity to 92%. For a detailed look at the weather during this month, you can visit Derby weather in November.
September and December present contrasting weather patterns. In September, temperatures range from a mild 3°C (37°F) at night to a warm 28°C (83°F) during the day, with an average of 14°C (57°F). This month sees a moderate amount of rainfall at 62 mm (2.5 in) over about 11 days, accompanied by relatively high humidity at 85%. In December, however, temperatures drop significantly, with min temperatures reaching -3°C (26°F) and max temperatures only reaching 14°C (57°F), averaging just 5°C (42°F). Precipitation increases to 84 mm (3.3 in) over 15 days, and humidity rises to 90%. For a more detailed look at December weather, you can visit Derby weather in December.
As September rolls into Derby, it brings a noticeable shift in the weather compared to the warmer summer months. Temperatures begin to cool, averaging around a comfortable 14°C (57°F), with the maximum reaching up to 28°C (83°F) on warmer days. The humidity creeps up to a notable 85%, creating a feeling of crispness in the air, especially with the frequent 11 days of precipitation that result in a total of 62 mm (2.5 in). This blend of elements marks the transition from summer’s warmth to the upcoming autumn chill. For a deeper dive into the seasonal changes, check out Derby Climate.