September Weather in Berkhamsted, United Kingdom

Last updated: March 17, 2025

September in Berkhamsted, United Kingdom presents a delightful mix of weather, with maximum temperatures reaching a pleasant 28°C (83°F) and an average of 15°C (59°F). The month experiences a notable minimum temperature of 3°C (38°F), perfectly showcasing the transition into autumn. Rainfall totals around 51 mm (2.0 in) over approximately 10 days, adding to the lush greenery of the region. With humidity levels settling at 82%, it’s advisable to enjoy the mild warmth while being prepared for the occasional shower. Overall, September serves as a charming bridge from summer's warmth into the cooler embrace of autumn.

September Temperature in Berkhamsted

In Berkhamsted, September marks a transition into autumn, characterized by a gentle decline in temperatures compared to the preceding summer months. With a minimum of 3°C (38°F) and a comfortable average of 15°C (59°F), the month brings a refreshing chill to the air. Although days still warm up to a pleasant 28°C (83°F), the nights gradually cool down, inviting the cozy comforts of the upcoming season. This shift is evident as September's climate begins to contrast sharply with the higher temperatures of July and August, where maxima reached as high as 36°C (97°F). As the vibrant hues of fall start to emerge, September in Berkhamsted serves as a perfect reminder of nature’s changing rhythm.

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

The chart illustrates September temperature patterns in Berkhamsted, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec404245495561656359534643
Data source: Temperature data for Berkhamsted 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 Berkhamsted

In September, Berkhamsted experiences a moderate dip in precipitation, with 51 mm (or 2.0 inches) of rain recorded over 10 days. This contrasts with the preceding month, August, which brought a heftier 71 mm (2.8 inches) of rain across a similar number of days. As summer transitions to autumn, the consistent rainfall seen throughout the earlier months gives way to a slight reduction, suggesting a shift in weather patterns. The overall trend indicates that while September retains its share of rainy days, the amount tends to taper off as the region prepares for the wetter months ahead, such as October, which typically sees a significant increase in precipitation.

September Precipitation Trends in Berkhamsted

The chart displays monthly precipitation patterns in Berkhamsted, 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.
JanFebMarAprMayJunJulAugSepOctNovDec565257346674677151915483
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Berkhamsted

In Berkhamsted, United Kingdom, September brings a noticeable shift in humidity, settling at a comfortable 82%. This marks a slight increase from the drier summer months, specifically July and August, which saw humidity levels dip to 71% and 76%, respectively. As autumn approaches, humidity begins to rise again, echoing the trend seen in the early months of the year where January and February reached peaks of 91% and 89%. This pattern underscores a characteristic fluctuation throughout the year, showcasing how the interplay of seasonal changes influences the moist air, providing a gentle transition into the wetter months of October and November.

September Average Humidity in Berkhamsted

This chart illustrates the average monthly humidity levels in Berkhamsted, 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.
JanFebMarAprMayJunJulAugSepOctNovDec91%89%86%85%79%81%71%76%82%91%92%92%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Berkhamsted

As September rolls into Berkhamsted, the UV Index reaches a high of 6, indicating a notable shift from the summer months, yet still requiring attention to sun safety. With a burn time of 25 minutes, it's essential for outdoor enthusiasts to remain vigilant during this transitional period. This month signals the tail end of the high UV Index trend that peaked in June and July at 8. While it may be tempting to revel in the lingering warmth, remember the moderate UV levels in October that follow. So whether you’re enjoying a walk in the autumn sun or having a picnic, consider your sun exposure carefully. For detailed insights and updates, visit Berkhamsted UV Index.

Maximum UV Index Levels in Berkhamsted for September

The chart shows the monthly maximum UV Index (UVI) for Berkhamsted 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.
JanFebMarAprMayJunJulAugSepOctNovDec124578876421
Data source: Berkhamsted 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 Berkhamsted

In September, the charming town of Berkhamsted experiences a notable transition, basking in approximately 300 hours of sunlight. This marks a shift from the sun-drenched heights of summer, exemplified by July's impressive 404 hours and August's 368 hours. As the landscape begins to embrace the crispness of autumn, September still offers a generous amount of sunshine, comfortably exceeding the lower light levels of October's 241 hours and further declining months. The gradual tapering of daylight signals the end of summer's vibrancy, yet it provides a warm and inviting atmosphere perfect for enjoying the scenic beauty of the town.

Monthly Sunshine Duration in Berkhamsted: September Highlighted

The September sunshine duration represents the total number of hours Berkhamsted 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.
JanFebMarAprMayJunJulAugSepOctNovDec98h148h210h319h398h389h404h368h300h241h144h109h
Data source: Berkhamsted September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Berkhamsted During September

In Berkhamsted, United Kingdom, the arrival of September brings a 28% chance of sunny weather, a slight increase compared to the cooler summer months. While this figure is lower than the more promising 49% in April, it shows a modest uptick from the summer's 23% in August. This trend reflects the transitional nature of autumn, where sunny days become less frequent as the days grow shorter. As September unfolds, residents and visitors can still relish in occasional sunshine amidst the onset of fall, making it a beautifully unpredictable month in this charming town.

Percentage of Sunny Days in September in Berkhamsted

The chart illustrates the percentage of sunny days in Berkhamsted 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 Berkhamsted experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec21%25%27%49%31%26%38%23%28%24%32%17%
Data source: Berkhamsted September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Berkhamsted in September

As September unfolds in Berkhamsted, the days begin to shorten, offering around 12 hours of daylight this month. This marks a gentle transition from the long, sun-drenched days of summer, which peaked in June and July with a remarkable 16 hours of light. Following the exuberance of August's 14 hours, September's daylight extent reflects a significant shift toward autumn, as the daylight gradually diminishes into October's expected 10 hours. This rhythmic ebb and flow of light not only heralds the changing seasons but also invites residents to savor the warm hues of early autumn before the darker days of winter set in.

Average Daylight Hours in Berkhamsted for September

The chart illustrates the variation in daylight duration in Berkhamsted throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 22m9h 57m11h 55m13h 54m15h 39m16h 34m16h 4m14h 30m12h 35m10h 36m8h 49m7h 52m
Data source: Berkhamsted daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Berkhamsted

As the summer fades into autumn, September winds in Berkhamsted bring a gentle breeze, averaging 3.4 m/s (8 mph)—slightly lower than the preceding months. This decline in wind speed marks a notable transition from the more vibrant currents of August, which saw 3.9 m/s (9 mph), hinting at the impending shift in seasons. The moderate September winds invite a tranquil charm, encouraging leisurely strolls through the historic town, where the rustling leaves playfully dance in the air. In contrast to the brisker gusts of October, averaging 4.5 m/s (10 mph), September serves as a reminder of summer’s farewell, offering a peaceful yet refreshing atmosphere perfect for enjoying the beauty of early autumn.

Average September Wind Speed in Berkhamsted

The chart displays monthly wind speed patterns in Berkhamsted, 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.
JanFebMarAprMayJunJulAugSepOctNovDec4.34.94.53.54.33.33.33.93.4 m/s4.54.04.6
Data source: Berkhamsted September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Berkhamsted Compares to Other Months

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

In September, the weather tends to be milder, with temperatures ranging from a minimum of 3°C (38°F) to a maximum of 28°C (83°F) and an average of 15°C (59°F). The month experiences 51 mm (2.0 in) of rainfall over about 10 days, accompanied by a humidity level of 82%. In contrast, January presents a much colder climate with temperatures dipping as low as -5°C (23°F) and averaging around 5°C (41°F), peaking at 14°C (58°F). Although it sees slightly higher precipitation at 56 mm (2.2 in) over the same number of days, January's humidity rises to 91%. For more insights into January weather, visit Berkhamsted weather in January.

September and February offer starkly different weather conditions. In September, temperatures range from a chilly 3°C (38°F) at their lowest to a warm 28°C (83°F) at their peak, with an average of 15°C (59°F). This month brings about 51 mm (2.0 in) of precipitation over approximately 10 days, and humidity levels sit at 82%. In contrast, February is much cooler, with minimum temperatures plunging to -5°C (22°F) and maximums reaching 18°C (65°F), averaging around 6°C (43°F). The precipitation remains similar at 52 mm (2.0 in), but it occurs over 11 days, with a higher humidity of 89%. For more specifics on February weather, you can check Berkhamsted weather in February.

September and March present distinctly different weather conditions. In September, temperatures tend to be milder, with a minimum of 3°C (38°F) and an average of 15°C (59°F), peaking at a comfortable 28°C (83°F). The month experiences about 51 mm (2.0 in) of precipitation over approximately 10 days, and humidity levels are lower at 82%. In contrast, March is characterized by cooler temperatures, starting from a minimum of -6°C (22°F) and averaging 7°C (45°F), with a maximum of 22°C (71°F). This month also sees slightly higher precipitation levels at 57 mm (2.2 in) spread across 14 days, and a higher humidity of 86%. For a detailed look at the weather patterns, check out Berkhamsted weather in March.

September and April present distinct weather patterns characterized by their average temperatures and precipitation levels. In September, the minimum temperature hovers at 3°C (38°F) and peaks at a warm 28°C (83°F), with an average of 15°C (59°F) and a total precipitation of 51 mm (2.0 in) over about 10 days. In contrast, April starts cooler, with temperatures ranging from a minimum of -2°C (28°F) to a maximum of 27°C (80°F), averaging 9°C (49°F). This month experiences less precipitation, totaling 34 mm (1.3 in) across around 8 days. Additionally, both months exhibit high humidity, with September at 82% and April slightly higher at 85%. For more detailed insights into April's climate, refer to this link: Berkhamsted weather in April.

When comparing the weather in September and May, September tends to be warmer overall, with average temperatures reaching 15°C (59°F) compared to May's average of 13°C (55°F). The maximum temperatures are also higher in September, peaking at 28°C (83°F), while May's maximum is 26°C (79°F). However, May experiences slightly higher precipitation, totaling 66 mm (2.6 in) over 11 days, in contrast to September's 51 mm (2.0 in) across 10 days. Overall, both months exhibit high humidity levels, with September at 82% and May slightly lower at 79%. For more detailed information, you can visit Berkhamsted weather in May.

When comparing the weather in September to that of June, several notable differences emerge. September sees a wider range of temperatures, with a minimum of 3°C (38°F) and a maximum of 28°C (83°F), averaging around 15°C (59°F). In contrast, June starts warmer, with minimum temperatures higher at 7°C (44°F) and maximums reaching 31°C (89°F), averaging 16°C (61°F). While September experiences less precipitation overall at 51 mm (2.0 in) compared to June's 74 mm (2.9 in), both months have roughly the same number of rainy days, around 10. The humidity levels are relatively similar as well, with September at 82% and June slightly lower at 80%. For more detailed insights, you can explore Berkhamsted weather in June.

In comparison to July, September tends to be cooler and wetter. While July experiences average temperatures ranging from a minimum of 8°C (47°F) to a maximum of 36°C (97°F), September's temperatures are significantly lower, with a minimum of 3°C (38°F) and a maximum of 28°C (83°F). Additionally, July is marked by lower humidity levels at 71%, compared to September's higher humidity of 82%. Precipitation also varies between the two months, with July receiving 67 mm (2.6 in) over 13 days, while September sees 51 mm (2.0 in) across 10 days. For more details on the weather in July, you can check Berkhamsted weather in July.

In comparing the weather of September and August, September presents a cooler climate with minimum temperatures dropping to 3°C (38°F), while August sees higher lows around 8°C (46°F). The average temperature in September is 15°C (59°F), which is slightly lower than August's average of 17°C (64°F), and September's maximum reaches 28°C (83°F) compared to August's hotter peak of 34°C (93°F). In terms of precipitation, September has a total of 51 mm (2.0 in) over 10 days, which is less than August's 71 mm (2.8 in) across 13 days, indicating a slightly drier September. Humidity levels are also marginally higher in September at 82%, compared to 76% in August. For a closer look at August weather, you can visit Berkhamsted weather in August.

In September, temperatures range from a mild minimum of 3°C (38°F) to a warmer maximum of 28°C (83°F), with an average of 15°C (59°F). The month sees around 51 mm (2.0 in) of precipitation over approximately 10 days, and humidity levels hover at 82%. In contrast, October experiences cooler temperatures, with a minimum of 1°C (34°F) and a maximum of 22°C (73°F), leading to a lower average of 11°C (53°F). Rainfall increases to 91 mm (3.6 in) over about 13 days, and humidity rises to 90%. For a more detailed look at what to expect, check out Berkhamsted weather in October.

September and November present distinct contrasts in weather patterns. In September, temperatures range from a mild minimum of 3°C (38°F) to a warm maximum of 28°C (83°F), with an average of 15°C (59°F). The month sees 51 mm (2.0 in) of precipitation over approximately 10 days, coupled with a humidity level of 82%. In comparison, November experiences cooler temperatures, with a minimum dipping to -2°C (29°F) and an average of 8°C (46°F). The maximum temperature reaches only 16°C (62°F), and precipitation slightly increases to 54 mm (2.1 in) over about 11 days, alongside a higher humidity level of 92%. For a more detailed outlook on November weather, you can explore Berkhamsted weather in November.

In September, the weather presents a more temperate experience, with temperatures ranging from a minimum of 3°C (38°F) to an average of 15°C (59°F) and peaking at 28°C (83°F). With 51 mm (2.0 in) of precipitation over about 10 days, the humidity remains relatively high at 82%, creating a warm, albeit slightly damp atmosphere. In contrast, December brings a much chillier climate, with temperatures dropping to a minimum of -5°C (23°F) and an average of 6°C (43°F), only reaching a maximum of 14°C (58°F). This month sees increased precipitation, totaling 83 mm (3.3 in) over approximately 14 days, along with a higher humidity level of 92%. For a more detailed look at the weather conditions in December, check out Berkhamsted weather in December.

Compare Berkhamsted's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Berkhamsted

As summer gently gives way to autumn, September in Berkhamsted brings a unique blend of warmth and variability. With maximum temperatures peaking at a comfortable 28°C, the month offers a pleasant respite before the chill sets in. However, the average temperatures drop significantly, reflecting the transition to cooler days and nights, where the minimum can plunge to a brisk 3°C. While rainfall is not uncommon, with approximately 51 mm over about 10 days, the humidity remains high at 82%, adding a touch of mugginess to the air. This blend of warmth, coolness, and moisture sets September apart from the drier, hotter summer months, encouraging a vibrant change in the landscape and atmosphere of Berkhamsted. To learn more about how Berkshire's weather conditions stack up throughout the year, visit Berkhamsted Climate.