Last updated: March 17, 2025
Experience the charm of Bletchley, United Kingdom in September, where the weather presents a delightful blend of warm days and cool evenings. With temperatures reaching a maximum of 29°C (85°F) and dipping to a minimum of 3°C (37°F), the month offers an average of 15°C (59°F), inviting you to enjoy the outdoors. Expect light rain, with about 55 mm (2.2 in) of precipitation over 10 days, contributing to the lush scenery. Coupled with a high humidity level of 82%, September in Bletchley is steeped in a cozy atmosphere, perfect for exploring the local culture while appreciating the crisp, refreshing air.
As September arrives in Bletchley, the lingering warmth of summer begins to wane, ushering in a noticeable transition in temperatures. With a minimum of 3°C (37°F) and a peak of 29°C (85°F), the month presents a gentle decline from the sweltering highs of summer. The average temperature settles comfortably at 15°C (59°F), marking a shift towards the cooler autumn days ahead. While the mornings may still offer a hint of warmth, the evenings begin to crisp, hinting at the seasonal change. This month serves as a bridge, blending the tail end of summer's heat with the refreshing coolness of fall, creating a delightful climate for outdoor activities and reflection on the changing seasons.
In September, Bletchley experiences a refreshing transition from summer to autumn, with precipitation measuring 55 mm (2.2 in) over approximately 10 days. This month sees a slight dip in rainfall compared to the vibrant summer months of July and August, which recorded 67 mm and 72 mm respectively. However, September's precipitation is still substantial enough to nourish the changing landscape and prepare for the wetter October ahead, which averages a notable 92 mm (3.6 in). This notable shift underscores a typical trend in Bletchley's climate, where autumn often brings increased rainfall following the lush conditions of summer, setting the stage for a cozy transition into the colder months.
In September, Bletchley experiences a notable rise in humidity, with levels reaching 82%. This increase comes after a relatively dry summer, where July and August recorded lower humidity at 71% and 76%, respectively. As the seasons transition into autumn, humidity levels begin to bounce back, aligning more closely with the heavier moisture typical of the colder months. Notably, October sees an even higher spike at 90%, setting the stage for the dampness characteristic of late autumn and winter, where humidity remains elevated through the end of the year. This pattern reflects a broader trend in Bletchley’s climate, where summer months gradually give way to more humid conditions as the temperatures drop.
In September, Bletchley experiences a UV Index of 6, categorizing the sun's rays as high exposure, with a burn time of 25 minutes for unprotected skin. This signals a gradual decline in UV intensity following the summer months, yet it still emphasizes the need for caution when spending time outdoors. As students head back to school and the days begin to shorten, it's important to remain vigilant against sun exposure, reflecting a broader seasonal trend where UV levels gradually decrease from their summer peaks but still require protective measures. For more detailed insights, visit Bletchley UV Index.
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As September unfolds in Bletchley, the days still bask in the glow of 290 sunshine hours, a delightful remnant of summer's warmth before the chill of autumn sets in. This month marks a noticeable transition from the peak sunshine of midsummer, where hours reached a high of 389 in July, to the more subdued brightness as October approaches, with its expected 232 hours. Despite this reduction, September remains a vibrant time, drastically brighter than the winter months, such as January’s mere 93 hours. With each passing day, the interplay of sun and impending autumn creates an enchanting backdrop, making September a cherished time for enjoying the lingering warmth of summer in Bletchley.
In Bletchley, the arrival of September brings a 28% chance of sunny weather, slightly above the summer’s average but not quite breaking the seasonal patterns. As the warmth of summer wanes in August, where the sun shines 22% of the time, September shows a modest uptick in clear skies. This month typically signals the transition toward autumn, with sunlit days becoming more precious as we approach the cooler October, which sees a 22% sun chance. Overall, while September might not guarantee an abundance of sunshine, it offers a flicker of brightness as the year shifts, inviting residents and visitors to savor those sunny moments before the darker months embrace Bletchley.
As summer transitions into autumn, September in Bletchley, United Kingdom, witnesses a notable shift in daylight, offering about 12 hours of sunlight each day. This marks a step down from the peak 16 hours experienced in June and July, yet it still provides a generous amount of daylight compared to the winter months. The gradual decrease in daylight from July to September reflects the waning warmth of summer, as nature begins to prepare for cooler days ahead. Following September's moderate daylight, the trend continues downward, with October seeing just 10 hours and November dwindling to 8 hours, underscoring the seasonal rhythm of light and darkness in this charming locale.
As September arrives in Bletchley, the average wind speed settles at a gentle 3.5 m/s (8 mph), reflecting a slight increase compared to the summer months. This transitional period sees a calming of the breezes that accompanied the warmer days of July and August, which recorded the lowest average winds of the year at 3.2 m/s (7 mph) and 3.9 m/s (9 mph), respectively. However, September's winds remain softer than those in the earlier months of the year—falling comfortably below the seasonal peaks of 4.3 m/s (10 mph) in January and 4.7 m/s (10 mph) in both October and December. As autumn begins to breathe life into the landscape, the mild winds of September create a refreshing atmosphere ideal for outdoor activities amidst the changing leaves.
The weather in Bletchley 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 Bletchley and find detailed weather information for every month.
September and January present starkly contrasting weather patterns. In September, temperatures range from a mild 3°C (37°F) at night to a warm 29°C (85°F) during the day, with an average of 15°C (59°F). The month sees about 55 mm (2.2 in) of precipitation over ten days, while humidity holds steady at 82%. In contrast, January experiences much colder temperatures, dropping to a low of -4°C (25°F) and reaching a maximum of 14°C (58°F), with an average of just 5°C (40°F). Precipitation is slightly lower at 54 mm (2.1 in), also spread over ten days, but humidity rises to 91%, making the air feel even colder. For more detailed weather information, check out Bletchley weather in January.
September and February present quite contrasting weather conditions. September enjoys a milder climate with average temperatures around 15°C (59°F), peaking at a warm 29°C (85°F), along with relatively lower humidity at 82%. In contrast, February experiences significantly cooler temperatures, averaging just 6°C (43°F) and dipping as low as -6°C (22°F). Though precipitation is slightly lower in February at 49 mm (1.9 in) over 11 days, the humidity is notable at 89%, contributing to a chillier atmosphere. For a more detailed look at February weather, check out Bletchley weather in February.
In September, temperatures typically range from a cool 3°C (37°F) at night to a warm 29°C (85°F) during the day, with an average of 15°C (59°F). The month sees about 55 mm (2.2 in) of precipitation over approximately 10 days and boasts a humidity level of 82%. In contrast, March experiences colder temperatures, with lows dipping to -6°C (21°F) and a maximum of 22°C (71°F), averaging around 7°C (45°F). The precipitation in March is slightly higher at 59 mm (2.3 in), occurring over 13 days, accompanied by a humidity level of 86%. For more detailed information, you can check Bletchley weather in March. Overall, September offers milder weather, while March introduces a chillier atmosphere as winter transitions to spring.
When comparing the weather in September and April, we see notable differences in temperature and precipitation. September generally offers warmer temperatures, with a minimum of 3°C (37°F) and an average of 15°C (59°F), peaking at 29°C (85°F). In contrast, April is cooler, starting with a minimum of -3°C (28°F) and averaging 9°C (49°F), with a maximum of 26°C (80°F). While September experiences slightly higher precipitation at 55 mm over 10 days, April’s precipitation totals 37 mm across 8 days. Humidity levels are relatively similar, with September at 82% and April at 85%. For more detailed insights into weather conditions, you can visit Bletchley weather in April.
In September, temperatures range from a minimum of 3°C (37°F) to a maximum of 29°C (85°F), with an average of 15°C (59°F), whereas May sees slightly cooler conditions, with minima around 0°C (33°F) and maxima reaching 27°C (80°F), averaging 12°C (55°F). Precipitation is somewhat higher in May, totaling 67 mm (2.6 in) over 11 days compared to September's 55 mm (2.2 in) across 10 days. Interestingly, both months experience high humidity, with September at 82% and May at 79%. For a detailed look at May's weather, you can check Bletchley weather in May.
In September, temperatures typically range from a minimum of 3°C (37°F) to a maximum of 29°C (85°F), with an average of 15°C (59°F). The month sees around 55 mm (2.2 in) of precipitation over about 10 days, coupled with high humidity levels of 82%. In contrast, June offers warmer conditions with a minimum of 6°C (43°F) and a maximum of 31°C (89°F), averaging 16°C (61°F). However, it also brings slightly more precipitation at 75 mm (3.0 in) over 11 days and maintains a similar humidity rate of 80%. For more detailed insights, you can check Bletchley weather in June.
In comparing the weather between September and July, notable contrasts emerge. September experiences cooler temperatures, with a minimum of 3°C (37°F) and an average of 15°C (59°F), while July boasts higher numbers, showing a minimum of 7°C (45°F) and an average of 18°C (65°F). Additionally, July can reach maximum temperatures of up to 37°C (98°F), significantly surpassing September's peak of 29°C (85°F).
Precipitation is slightly greater in July, totaling 67 mm (2.6 in) over 13 days compared to September's 55 mm (2.2 in) across 10 days. Humidity levels also differ, with September arriving at 82%, while July maintains a more moderate 71%. For those interested in more detailed insights, you can check Bletchley weather in July.
In comparing the weather conditions of September and August, we observe that September experiences a notable decrease in temperature, with average highs of 29°C (85°F) compared to August's peak of 34°C (94°F). The minimum temperatures in September also drop to 3°C (37°F), notably cooler than August's minimum of 8°C (46°F). Additionally, September sees more frequent precipitation, with rain on 10 days and a total of 55 mm (2.2 in), while August records higher rainfall of 72 mm (2.8 in) over 13 days. Humidity levels are slightly higher in September at 82%, compared to August's 76%. For a more detailed look at August's weather specifics, you can visit Bletchley 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 29°C (85°F), with an average temperature of 15°C (59°F) and relatively moderate precipitation of 55 mm (2.2 in) over about 10 days, accompanied by a humidity level of 82%. In contrast, October sees a drop in average temperatures to 11°C (53°F), with a minimum of 0°C (33°F) and a maximum of 23°C (73°F). This month also experiences increased rainfall, totaling 92 mm (3.6 in) over 13 days, and a rise in humidity to 90%. For more detailed insights on the weather in October, you can visit Bletchley weather in October.
In September, temperatures range from a low of 3°C (37°F) to a high of 29°C (85°F), with an average of 15°C (59°F), and the month sees about 55 mm (2.2 in) of precipitation across approximately 10 days. The humidity is relatively high at 82%, contributing to a warm and variable climate. In contrast, November experiences cooler weather with temperatures ranging from a minimum of -2°C (28°F) to a maximum of 17°C (62°F), with an average temperature of 8°C (46°F). Precipitation slightly increases to 56 mm (2.2 in) over 12 days, while humidity rises to 92%, making it feel much colder. For more detailed information about the weather in November, you can visit Bletchley weather in November.
September and December present quite contrasting weather conditions. In September, temperatures can range from a mild 3°C (37°F) at night to a warm 29°C (85°F) during the day, accompanied by an average of 15°C (59°F). The month typically receives 55 mm (2.2 in) of precipitation over about 10 days, with humidity sitting at 82%. In contrast, December brings colder temperatures, with highs reaching only 14°C (58°F) and lows dropping to -6°C (22°F). The average temperature sits at 6°C (43°F), and the month sees more precipitation at 81 mm (3.2 in) across approximately 14 days, while humidity increases to 92%. For more information on seasonal changes, check out Bletchley weather in December.
As September unfolds in Bletchley, it brings a refreshing transition from the warmth of summer to the cooler embrace of autumn. While the maximum temperature can still reach a pleasant 29°C, the average drops significantly, offering a more temperate feel with crisp mornings that might dip to around 3°C. Rain is a notable companion this month, with precipitation gracing the town on about 10 days, contributing to a rather humid atmosphere at 82%. This blend of warmth, moisture, and the onset of vibrant fall foliage makes September a unique chapter in Bletchley's weather narrative. For more insights on the climate, explore Bletchley Climate.