Last updated: March 17, 2025
September weather in Cambridge, United Kingdom is characterized by mild temperatures and a touch of autumnal chill. This month sees maximum highs reaching 29°C (85°F), while the average settles around a comfortable 15°C (59°F), with lows dipping to a brisk 2°C (36°F). With 52 mm (2.1 in) of rain spread over approximately 10 days, the month demands an umbrella, especially as humidity levels hover around a steamy 84%. Whether basking in unexpected warmth or preparing for the first hints of fall, September in Cambridge offers a distinctive blend of conditions, making it a colorful transition period.
In September, Cambridge, United Kingdom transitions gracefully from summer's warmth to the embrace of autumn. The temperatures showcase a delightful range, with lows around 2°C (36°F) and averages hovering at 15°C (59°F). Daytime highs can reach a comfortable 29°C (85°F), perfect for enjoying the lingering sunshine. While this month retains a hint of summer's warmth, it also signals the approach of cooler days, making it an ideal time for outdoor activities amidst the stunning fall foliage. As the month progresses, the shift in temperatures hints at the upcoming seasonal change, inviting residents and visitors alike to savor the last remnants of summer's charm before autumn fully takes hold.
September in Cambridge, United Kingdom, typically sees a moderate precipitation level of 52 mm (2.1 in) over the course of 10 days. This amount reflects a slight decrease from the wetter summer months of July and August, which record 65 mm (2.6 in) and 70 mm (2.8 in) respectively. As the season transitions from summer to autumn, September marks a pivotal shift, showcasing a gradual reduction in rainfall, yet still maintaining a consistent number of wet days. This continuity hints at the lingering humidity of summer while foreshadowing the wetter months ahead, such as October, which often sees a sharp rise in precipitation.
In September, humidity in Cambridge, United Kingdom, settles at a moderate 84%, marking a slight increase from the summer months of July and August, where it hovered around 79% and 78%, respectively. This transitional month reflects a gradual shift in weather patterns as autumn approaches. Notably, while September's humidity is lower than the winter peaks of January and February at 89% and 87%, it still signals the onset of a more humid season, foreshadowing the 88% and 89% levels typical in October and November. Overall, September acts as a bridge, blending the warmth of summer with the dampness of fall, creating a uniquely refreshing atmosphere.
As September rolls into Cambridge, the UV Index reaches a moderate level of 5, indicating it's a good time to enjoy outdoor activities while still being mindful of sun protection. While the summer months boast higher UV ratings of 7 to 8, the transition into autumn brings a slight reduction, with a burn time of approximately 30 minutes for fair-skinned individuals. This gradual decline from the peak summer exposure serves as a reminder to remain vigilant about skin safety. However, September still offers plenty of sunshine, perfect for enjoying the early autumn scenery. For detailed information on UV exposure levels, visit Cambridge UV Index.
UV Risk Categories
September in Cambridge, United Kingdom, offers a delightful blend of warmth and tranquility, boasting 281 hours of sunshine that beautifully cap off the summer months. As the sun-soaked days of July and August gracefully transition, this month reflects a noticeable decline in sunlight compared to the peak of summer but remains richer than the shorter, greyer days of winter. The consistent increase in sunshine hours from January's mere 88 hours to May's peak of 378 hours highlights the gradual embrace of brighter days, creating a striking contrast as October sets in with just 229 hours. This gentle decline into the autumn season brings a unique charm to the city, painting the landscape in vibrant hues while inviting residents and visitors alike to enjoy the lingering warmth of early fall.
September in Cambridge, United Kingdom, brings a 29% chance of sunny weather, marking a noticeable transition as summer wanes. While this percentage is slightly above the averages seen in the earlier summer months, such as June and August, it still falls short of the sunnier days found in April, which boasts a 46% chance. This trend reflects a gradual decline in sunshine likelihood as autumn approaches, yet September still offers a pleasant window for enjoying longer days before the chill of October sets in, when the probability drops to 21%. As the season shifts, locals and visitors alike can appreciate September's lingering warmth and occasional sunny spells.
As September arrives in Cambridge, United Kingdom, the daylight begins to wane, offering about 12 hours of light, a notable transition from the 16 hours enjoyed during the peak of summer in June and July. This gradual decline reflects the shifting season, with daylight hours decreasing from the sun-drenched bliss of June, where twilight lingers well into the evening, to October's more subdued 10 hours. September acts as a gentle bridge, providing a comforting warmth and ample daylight, while subtly hinting at the cozy rhythms of autumn that lie ahead. As the sun sets earlier each day, the transition beckons us to embrace the rich colors and crisp air that define this time of year in Cambridge.
As September rolls into Cambridge, the wind greets the city with a gentler touch, averaging just 3.6 m/s (8 mph). This marks a noticeable decline from the breezier summer months, where winds peaked with an average of 4.1 m/s (9 mph) in August. The early autumn transition is evident as the city’s wind patterns shift toward milder conditions, reminiscent of the calm that often accompanies the changing leaves. This softer breeze sets the stage for the vibrant charm of September, inviting both residents and visitors to enjoy the cooler air while embracing the promise of autumnal delights ahead.
The weather in Cambridge 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 Cambridge and find detailed weather information for every month.
September and January present distinctly different weather patterns. In September, temperatures range from a mild minimum of 2°C (36°F) to a warm maximum of 29°C (85°F), averaging around 15°C (59°F). The month also experiences relatively low precipitation levels at 52 mm (2.1 in) over about 10 days, with a humidity level of 84%. Conversely, January is marked by much colder temperatures, with a minimum of -4°C (24°F) and a maximum of 15°C (59°F), resulting in an average temperature of just 5°C (41°F). The precipitation is slightly lower at 50 mm (2.0 in) over 9 days, and humidity rises to 89%. For more details on January’s weather, you can visit Cambridge weather in January.
September and February exhibit distinct weather patterns, reflecting the transitions between summer and winter. In September, temperatures range from a cool 2°C (36°F) at night to a warm 29°C (85°F) during the day, maintaining an average of 15°C (59°F). The month sees about 52 mm (2.1 in) of precipitation over approximately 10 days, with a humidity level of 84%. Conversely, February presents a much colder climate, with temperatures dipping to a minimum of -8°C (18°F), averaging around 6°C (43°F), and peaking at 18°C (65°F). Although February experiences similar precipitation, totaling 47 mm (1.8 in) over the same number of rainy days, the humidity is slightly higher at 87%. For more details on February weather, you can refer to Cambridge weather in February.
In September, temperatures range from a refreshing 2°C (36°F) at night to a warm 29°C (85°F) during the day, averaging around 15°C (59°F). The month experiences about 52 mm (2.1 in) of precipitation over 10 days and a humidity level of 84%. Conversely, March presents a cooler climate, with nighttime lows dipping to -6°C (21°F) and daytime highs reaching 22°C (72°F), averaging 7°C (46°F). Although precipitation is slightly higher in March at 53 mm (2.1 in) over 13 days, the humidity is marginally higher as well at 86%. For more detailed weather information, you can check Cambridge weather in March.
When comparing the weather in September and April, September typically offers milder temperatures, with averages reaching up to 15°C (59°F) compared to April's average of 9°C (49°F). Despite September's higher maximum temperature of 29°C (85°F), it also sees more significant rainfall, averaging 52 mm (2.1 in) over 10 days, while April experiences less rainfall at 32 mm (1.3 in) over 8 days. Humidity levels are notably similar, with April slightly higher at 85% compared to September's 84%. For a closer look at April's weather conditions, you can visit Cambridge weather in April.
When comparing the weather in September and May, both months showcase mild temperatures but with subtle differences. September exhibits a slightly higher average temperature of 15°C (59°F) compared to May's 13°C (55°F), though May has a marginally cooler minimum temperature of 1°C (35°F) versus September's 2°C (36°F). The maximum temperatures are relatively close, with September reaching up to 29°C (85°F) while May peaks at 27°C (82°F). Precipitation is slightly higher in May at 66 mm (2.6 in) over 11 days, compared to September's 52 mm (2.1 in) over 10 days, demonstrating that May has a tendency to be a bit wetter. Humidity levels are quite similar, with September showing 84% and May at 83%. For more details on May weather, you can visit Cambridge weather in May.
In comparing the weather of September and June, September tends to exhibit a broader range of temperatures, with a minimum of 2°C (36°F) and a maximum of 29°C (85°F), while June maintains a milder temperature range, starting at 7°C (44°F) and peaking at 30°C (87°F). The average temperatures are slightly higher in June at 16°C (62°F) compared to 15°C (59°F) in September. However, September experiences less precipitation, totaling 52 mm (2.1 in) over 10 days compared to June's 69 mm (2.7 in), despite both months having a similar number of rainy days. Humidity levels are fairly comparable, with September at 84% and June slightly lower at 83%. For more detailed insights into June's weather patterns, you can explore Cambridge weather in June.
When comparing the weather in September to July, there are notable differences in temperature and precipitation. September sees a broader temperature range with a minimum of 2°C (36°F) and a maximum of 29°C (85°F), resulting in an average of 15°C (59°F). In contrast, July is generally warmer, offering a minimum of 8°C (47°F) and peaking at 36°C (97°F), with an average temperature of 18°C (65°F). Additionally, July experiences a slightly higher total precipitation at 65 mm (2.6 in) over 12 days, compared to September's 52 mm (2.1 in) over 10 days. Humidity levels are also close, with September at 84% and July at 79%. For a more detailed look at July's weather patterns, you can visit Cambridge weather in July.
In comparing the weather between September and August, it's evident that September experiences cooler temperatures with a minimum of 2°C (36°F) and an average of 15°C (59°F), contrasting with August’s warmer temperatures, which range from a minimum of 8°C (47°F) to an average of 18°C (64°F). August also sees higher maximum temperatures, reaching up to 34°C (94°F), compared to September’s maximum of 29°C (85°F). Additionally, September has slightly less precipitation at 52 mm (2.1 in) over 10 days, while August records 70 mm (2.8 in) across 12 days, resulting in higher humidity levels in September at 84% versus 78% in August. For more detailed insights into August weather, you can check Cambridge weather in August.
In comparing the weather of September and October, it is evident that October tends to be cooler and wetter. September exhibits a wider temperature range, with minimums around 2°C (36°F) and maximums reaching 29°C (85°F), while October sees a lower average temperature of 12°C (53°F) and maximums of 24°C (76°F). Additionally, October experiences increased precipitation, with 79 mm (3.1 in) over 12 days compared to 52 mm (2.1 in) over 10 days in September. The humidity also rises slightly in October, making it feel even chillier. For more details on October weather, you can visit Cambridge weather in October.
September and November present a notable transition in weather patterns. In September, temperatures start from a mild minimum of 2°C (36°F) and can reach up to 29°C (85°F), with an average of 15°C (59°F). The month sees about 52 mm (2.1 in) of precipitation over 10 days, and humidity levels sit at 84%. In contrast, November brings cooler temperatures, with a minimum of -2°C (28°F) and a maximum of 17°C (64°F), averaging around 8°C (46°F). Precipitation remains similar at 49 mm (1.9 in) over 10 days but with a slight increase in humidity to 89%. For further details on November weather, check Cambridge weather in November.
September weather is characterized by milder temperatures, with averages around 15°C (59°F), peaking at a pleasant 29°C (85°F) during the day. The month sees about 52 mm (2.1 in) of precipitation over approximately 10 days, along with a humidity level of 84%. In contrast, December brings a significant drop in temperature, with an average around 6°C (43°F) and a maximum of only 15°C (59°F). This winter month experiences more precipitation at 80 mm (3.2 in) spread over about 15 days, and higher humidity levels, reaching 88%. For a detailed look at December weather specifics, visit Cambridge weather in December.
As September unfolds in Cambridge, the weather presents a striking transition from the warmth of summer to the cooler embrace of autumn. With a blend of pleasant days and brisk evenings, this month showcases a delightful mix of temperatures that can reach up to a comfortable 29°C, while the average settles around 15°C. Compared to the heavier rainfall in preceding months, September’s 52 mm of precipitation over 10 days brings a refreshing change, though the increased humidity at 84% adds a hint of stickiness to the air. Overall, September in Cambridge offers a unique balance of warmth and chill, making it an ideal time for outdoor exploration. For more insights on what to expect throughout the year, check out Cambridge Climate.