September Weather in Peterborough, United Kingdom

Last updated: March 17, 2025

September in Peterborough, United Kingdom, showcases a diverse weather profile that reflects the transition from summer to autumn. With maximum temperatures reaching a warm 29°C (85°F) and an average of 15°C (59°F), the month offers a pleasant mix of warmth and coolness. However, early autumn rains contribute to a total precipitation of 56 mm (2.2 in) over approximately 10 days, creating a backdrop of vibrant greenery. Humidity levels remain relatively high at 85%, adding a touch of mugginess to the air. This combination of factors ensures that September remains a dynamic and engaging month for both residents and visitors alike.

September Temperature in Peterborough

As September rolls in, Peterborough experiences a delightful transition from the warmth of summer to the beginnings of autumn. With temperatures ranging from a minimum of 3°C (37°F) to a maximum of 29°C (85°F), the month strikes a balance with an average of 15°C (59°F), reflecting a mild and pleasant climate. While the days are still warm enough to enjoy outdoor activities, the nights begin to hint at the cooler months ahead. This trend marks a gradual decline in temperatures compared to the sweltering highs of summer, encouraging locals to savor the last remnants of summer before the crisp autumn air fully settles in. Whether it's a sunny afternoon or a brisk evening walk, September in Peterborough offers a uniquely enjoyable blend of warmth and coolness.

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

The chart illustrates September temperature patterns in Peterborough, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec414345495561656459534643
Data source: Temperature data for Peterborough generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Peterborough

September in Peterborough sees precipitation levels maintaining a moderate balance, with an average rainfall of 56 mm (2.2 in) over approximately 10 days. As the summer warmth begins to wane, this month showcases a slight drop in rainfall compared to the wetter months of August and October, which both exceed 70 mm. The consistency in precipitation during September reflects a transition period, where the area enjoys a blend of lingering late-summer sunshine and the onset of autumn rains. This pattern reinforces a trend of increased rainfall as the year progresses, foreshadowing the heavier downpours that often characterize the following months. Thus, September acts as a gentle bridge between the drier summer and the wetter autumn, providing a refreshing shift in Peterborough’s weather landscape.

September Precipitation Trends in Peterborough

The chart displays monthly precipitation patterns in Peterborough, 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.
JanFebMarAprMayJunJulAugSepOctNovDec474856376473707456775177
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Peterborough

As summer fades into autumn, September in Peterborough, United Kingdom, experiences a noticeable shift in humidity, rising to 85%. This marks a contrast to the drier months of July and August, where humidity levels dipped to 76% and 77% respectively. The gradual increase reflects the transition towards cooler temperatures, reminiscent of the higher humidity seen in the earlier months of the year, such as January's peak at 90%. This fluctuation showcases how September serves as a bridge between the warm, sun-soaked days of summer and the damp chill of autumn, hinting at the return of the wetter weather that characterizes the later months.

September Average Humidity in Peterborough

This chart illustrates the average monthly humidity levels in Peterborough, 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 Peterborough

As September arrives in Peterborough, United Kingdom, the UV Index settles at a moderate 5, making it crucial for outdoor enthusiasts to be mindful of sun exposure. After a summer characterized by very high levels of UV radiation in July and August, this drop indicates a gentle transition into autumn. With a burn time of approximately 30 minutes, it's important to take preventative measures if you're planning to spend time outdoors. This month's index is consistent with the moderate ratings observed in March and April, showcasing a gradual shift from the intense sun of summer. As you enjoy the fall weather, don’t forget to check the latest updates on the Peterborough UV Index for a safe and enjoyable experience!

Maximum UV Index Levels in Peterborough for September

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

As summer gently transitions into autumn, September in Peterborough boasts an impressive 286 hours of sunshine, making it one of the sunniest months of the year. This marks a slight decline from the peak of July and August, which revel in over 380 hours, yet September still radiates warmth and light as the days gradually shorten. The steady rise in brightness from the depths of winter, where January offers only a mere 90 hours, reflects the shifting seasons and the lingering golden hues of summer. As the village embraces the vibrant beauty of early fall, residents and visitors alike can enjoy the tail end of sunnier days before the onset of October's more subdued 229 hours, inviting an appreciation for the fleeting joys of September sunshine.

Monthly Sunshine Duration in Peterborough: September Highlighted

The September sunshine duration represents the total number of hours Peterborough 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.
JanFebMarAprMayJunJulAugSepOctNovDec90h147h204h307h378h361h382h352h286h229h138h103h
Data source: Peterborough September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Peterborough During September

In September, Peterborough enjoys a 30% chance of sunny weather, marking a slight increase compared to the summer months, particularly August, which sits at 25%. This modest rise indicates the tail end of the warmer season, as people transition from the highs of summer to the cooler autumn days. Notably, April leads with the highest likelihood of sunshine at 46%, while the winter months, particularly December and January, see the least sun at just 17% and 23%, respectively. This trend highlights the seasonal shifts in Peterborough, where September offers a pleasant opportunity for outdoor activities, although it falls short of the sunniest months.

Percentage of Sunny Days in September in Peterborough

The chart illustrates the percentage of sunny days in Peterborough 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 Peterborough experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec23%25%26%46%31%27%38%25%30%21%31%17%
Data source: Peterborough September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Peterborough in September

As summer bids farewell, September in Peterborough, United Kingdom, offers a gentle transition with approximately 12 hours of daylight. This marks a notable decrease from the peak of 16 hours enjoyed in June and July, yet it still provides ample sunlight for outdoor activities. The gradual reduction in daylight hours reflects the shifting seasons, as the days shorten leading into autumn. Following the vibrant and long days of summer, September's daylight allows for a perfect blend of warmth and cooling breezes, as nature prepares for the winter ahead. After this month, daylight will wane further, dropping to 10 hours in October and sinking further to just 8 hours by November, signaling the approaching winter's embrace.

Average Daylight Hours in Peterborough for September

The chart illustrates the variation in daylight duration in Peterborough throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 15m9h 53m11h 54m13h 58m15h 46m16h 43m16h 13m14h 35m12h 36m10h 33m8h 42m7h 43m
Data source: Peterborough daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Peterborough

In September, the winds in Peterborough gently begin to transition, with an average speed of 3.6 m/s (8 mph). This marks a slight increase from the calmness of July and August, where speeds dipped to their annual lows of 3.2 m/s (7 mph) and 4.1 m/s (9 mph), respectively. As summer wanes, the winds stir just enough to hint at the brisk embrace of autumn. Notably, October shows an uptick with an average wind speed of 5.0 m/s (11 mph), suggesting a shift towards more dynamic weather patterns. Overall, September serves as a gentle bridge between the stillness of summer and the more invigorated gusts of the upcoming fall season.

Average September Wind Speed in Peterborough

The chart displays monthly wind speed patterns in Peterborough, 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.
JanFebMarAprMayJunJulAugSepOctNovDec4.54.94.73.54.23.43.24.13.6 m/s5.04.54.7
Data source: Peterborough September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Peterborough Compares to Other Months

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

September and January present contrasting weather conditions in terms of temperature, precipitation, and humidity. 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). The month experiences 56 mm (2.2 in) of precipitation over about 10 days, while humidity levels are relatively high at 85%. In contrast, January is much colder, with a minimum temperature of -4°C (24°F), an average of 5°C (41°F), and a maximum of 15°C (59°F). Although precipitation is slightly lower at 47 mm (1.9 in) across the same number of days, the humidity rises to 90%. For more detailed insights into the weather specifics, you can check Peterborough weather in January.

September and February present 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). This month sees about 56 mm (2.2 in) of precipitation spread over 10 days and maintains a high humidity level of 85%. In contrast, February experiences much cooler weather, with temperatures dipping to a minimum of -6°C (21°F) and peaking at 18°C (65°F), averaging around 6°C (43°F). Precipitation is slightly lower at 48 mm (1.9 in), occurring over 11 days, and humidity is higher at 88%. For those seeking more specific details, you can view Peterborough weather in February.

In comparing the weather of September and March, we observe notable differences in temperature and seasonal transition. September boasts a range of temperatures, with a minimum of 3°C and a maximum reaching up to 29°C, averaging a pleasant 15°C. The humidity is relatively high at 85%, contributing to the feeling of warmth, alongside 56 mm of precipitation over about 10 days. In contrast, March experiences cooler conditions, starting with a minimum temperature of -7°C and an average of 7°C, peaking at a maximum of 22°C. The precipitation remains the same at 56 mm; however, it spans over 13 days, leading to somewhat damp conditions and a slightly higher humidity level of 86%. For more details on March weather, visit Peterborough weather in March. Overall, September tends to feel warmer and drier compared to the brisk, wetter atmosphere of March.

In comparing the weather between September and April, September tends to be much warmer with average temperatures around 15°C (59°F), peaking at 29°C (85°F), while April has cooler average temperatures of about 9°C (49°F) and a maximum of 27°C (81°F). Precipitation is more frequent in September, with 56 mm (2.2 in) falling over 10 days, compared to April's 37 mm (1.4 in) over just 8 days. Interestingly, humidity levels remain quite similar, with September at 85% and April slightly lower at 84%. For a closer look at what to expect in April, you can check Peterborough weather in April.

In comparing the weather between September and May, September tends to be slightly warmer, with average temperatures ranging from 3°C (37°F) at night to a high of 29°C (85°F) during the day. In contrast, May has a cooler feel, with temperatures dipping to a minimum of 1°C (34°F) and peaking at 27°C (81°F). While both months experience significant rainfall, September sees around 56 mm (2.2 in) over 10 days, whereas May has a bit more precipitation at 64 mm (2.5 in) across 12 days. Humidity levels are high in both months, with September at 85% and May slightly lower at 80%. For a more detailed look at May's climate, you can check Peterborough weather in May.

In comparing the weather between September and June, one can observe distinct differences in temperature and precipitation patterns. September features a wider temperature range, with minimums dipping to 3°C (37°F) and a pleasant average of 15°C (59°F), whereas June starts at a milder minimum of 7°C (44°F) and reaches an average of 16°C (61°F). Although both months experience roughly the same amount of rainfall over ten days, June sees a slightly higher total precipitation of 73 mm (2.9 in) compared to September’s 56 mm (2.2 in). Additionally, September's humidity is notably higher at 85%, compared to June's 81%. For a more detailed look at June weather specifically, you can check out Peterborough weather in June.

When comparing the weather in September to that in July, we observe notable differences in temperature and precipitation patterns. September typically sees cooler temperatures, with a minimum of 3°C (37°F) and an average of 15°C (59°F), compared to July’s warmer range that starts at 8°C (46°F) and can reach up to 36°C (97°F). While July boasts a higher average maximum temperature, it also experiences greater humidity at 76% compared to September's 85%. In terms of rainfall, July receives more precipitation with 70 mm (2.8 in) falling over 12 days, whereas September sees slightly less at 56 mm (2.2 in) across 10 days. For more details about the weather in July, you can check Peterborough weather in July.

In comparing the weather between September and August, one can observe notable differences in temperature and precipitation patterns. September experiences a wider temperature range with a minimum of 3°C (37°F) and a maximum of 29°C (85°F), resulting in an average of 15°C (59°F). In contrast, August is warmer overall, with temperatures ranging from a minimum of 9°C (48°F) to a maximum of 34°C (94°F) and an average of 18°C (64°F). Precipitation is slightly higher in August at 74 mm (2.9 in) over 12 days, compared to September's 56 mm (2.2 in) across 10 days, although September is marked by higher humidity at 85% compared to August's 77%. For more detailed insights, you can check out Peterborough weather in August.

September typically showcases a broader temperature range with minimums around 3°C (37°F) and maximums peaking at 29°C (85°F), leading to an average temperature of 15°C (59°F). In contrast, October brings cooler conditions with minimums dipping to 1°C (34°F) and maximums reaching 24°C (76°F), resulting in an average temperature of 12°C (53°F). While September experiences about 56 mm (2.2 in) of precipitation over 10 days, October sees a slight increase in rainfall, totaling 77 mm (3.0 in) across 12 days. The humidity also rises from 85% in September to 90% in October, contributing to the feeling of crispness in the air. For more details, you can check out Peterborough weather in October.

September and November offer distinct contrasts in 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 temperature of 15°C (59°F). This month sees moderate precipitation of 56 mm (2.2 in), occurring over about 10 days, and a relatively comfortable humidity level of 85%. In contrast, November brings a notable drop in temperatures, starting at a chilly -2°C (28°F) and peaking at just 18°C (64°F), resulting in a much cooler average of 8°C (46°F). Despite a slight decrease in precipitation to 51 mm (2.0 in), the humidity rises to 92%, making the air feel significantly heavier. For more details on November's climate, you can check Peterborough weather in November.

September and December showcase distinct weather contrasts. In September, temperatures range from a mild 3°C (37°F) at night to a warm 29°C (85°F) during the day, with average temperatures around 15°C (59°F). The month sees about 56 mm (2.2 in) of precipitation over roughly 10 days, accompanied by a humidity level of 85%. In contrast, December experiences colder conditions with nighttime lows of -3°C (28°F) and daytime highs peaking at 15°C (59°F), averaging around 6°C (43°F). Precipitation increases to 77 mm (3.0 in) over about 14 days, with humidity levels slightly higher at 90%. For more detailed information on conditions during this winter month, check out Peterborough weather in December.

Compare Peterborough's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Peterborough

As September unfolds in Peterborough, the transition from the warmth of summer to the cooler embrace of autumn becomes evident. The month often sees temperatures that can soar to 29°C at their peak, yet it also brings cooler nights where the mercury can dip as low as 3°C. With an average temperature hovering around 15°C, it's a time when visitors can enjoy mild days contrasted with crisp evenings. While rainfall is not abundant, with 10 days of precipitation totaling 56 mm, the high humidity at 85% can make the air feel heavier. This unique blend sets September apart from the drier, warmer months of summer and the cooler, wetter months ahead. For a deeper dive into the fascinating yearly pattern of weather in Peterborough, visit Peterborough Climate.