September Weather in Malmesbury, United Kingdom

Last updated: March 17, 2025

September in Malmesbury, United Kingdom, offers a delightful blend of weather experiences. Throughout the month, temperatures oscillate dramatically, peaking at a warm 28°C (84°F) during the day, while cooling down to an average of 14°C (58°F) and dipping as low as 2°C (37°F) at night. Rain is a frequent visitor, with 52 mm (2.1 in) of precipitation spread across 9 days, contributing to the region's lush greenery. Humidity levels hover around a comfortable 82%, enhancing the crisp, refreshing atmosphere typical of this charming locale in early autumn.

September Temperature in Malmesbury

As summer transitions to autumn, September in Malmesbury presents a delightful blend of warmth and crispness. The temperatures range from a cool 2°C (37°F) at night to an inviting 28°C (84°F) during the day, reflecting the tail end of summer. With an average of 14°C (58°F), the month provides a comfortable climate ideal for outdoor activities and exploring the scenic beauty of this historic town. This moderate weather marks a significant shift from the hot summer months, as the temperatures begin to taper down, setting the stage for the enchanting colors of autumn that follow. Overall, September offers a pleasant balance of warmth and coolness, inviting both locals and visitors to enjoy the beauty of Malmesbury before the chill of winter sets in.

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

The chart illustrates September temperature patterns in Malmesbury, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec414345485460646258524643
Data source: Temperature data for Malmesbury generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Malmesbury

In September, Malmesbury experiences a relatively modest precipitation total of 52 mm (2.1 in), marking a slight decrease from the summer months. With only 9 days of rain, this suggests a trend towards drier conditions as autumn approaches, especially compared to August’s 13 rainy days and 74 mm (2.9 in) of rainfall. This transition reflects the overall seasonal shift, where the typically wetter months are followed by a brief period of respite before the oncoming October deluge, which brings an average of 103 mm (4.0 in) over 14 days. September's weather may inspire outdoor activities, as the reduced rainfall offers a welcome break before the wetter autumn sets in.

September Precipitation Trends in Malmesbury

The chart displays monthly precipitation patterns in Malmesbury, 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.
JanFebMarAprMayJunJulAugSepOctNovDec5662694574726374521036289
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Malmesbury

September in Malmesbury, United Kingdom, offers a noticeable shift in humidity as it settles at 82%, marking a slight increase from the summer months. After experiencing the lowest levels in July (71%) and a gradual rise through August (76%), September's humidity reflects the transition towards the cooler autumn months. This uptick is part of a broader trend where humidity in Malmesbury tends to peak again in October (90%), followed by November and December, which see even higher averages of 92%. As the seasons change, residents can expect a more moist atmosphere, a characteristic that ties together the lush landscapes of this charming region.

September Average Humidity in Malmesbury

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

As autumn approaches in Malmesbury, the UV Index in September stands at a notable 6, reflecting a high exposure category. This indicates that while the sunshine may not be as intense as in the peak summer months, precautions should still be taken, as unprotected skin could burn in about 25 minutes. Throughout the year, the trend shows a progressive increase from a very low index in winter, reaching its peak in the summer months of June and July at 8. After a slight dip in August, September retains a robust index, hinting at the lingering warmth of summer. As the days grow shorter and cooler, the UV index is expected to decline further, dropping to a moderate level by October. For more detailed insights, explore the complete data at Malmesbury UV Index.

Maximum UV Index Levels in Malmesbury for September

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

In September, Malmesbury basks in an impressive 284 hours of sunshine, marking a delightful transition from the vibrant summer months. After the sun-drenched July and August, which each boasted over 340 hours of glorious sunlight, September provides a gentle tapering off, yet still offers ample opportunities to enjoy the great outdoors. This month captures the tail end of the warm season, as daylight hours begin to dwindle, but it remains a favorite for those wishing to savor the last whispers of summer, with sunshine significantly higher than the bleak winter months ahead. As the year progresses toward October's 231 hours, September stands out as a charming, sunlit bridge between the lush heights of summer and the cooler embrace of autumn.

Monthly Sunshine Duration in Malmesbury: September Highlighted

The September sunshine duration represents the total number of hours Malmesbury 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.
JanFebMarAprMayJunJulAugSepOctNovDec93h143h195h310h382h367h394h348h284h231h135h110h
Data source: Malmesbury September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Malmesbury During September

As September rolls into Malmesbury, the chances of sunny weather sit at a moderate 26%, which is slightly below the summer peak but better than the chillier months that follow. This trend reflects a seasonal transition where the vibrancy of late summer starts to wane, leaving behind a mix of sunshine and the early whispers of autumn. While the likelihood of clear skies may diminish compared to the sunnier April, which boasts a noteworthy 52%, September still offers a reasonable opportunity to enjoy some pleasant days outdoors before autumn fully takes hold. Overall, while not the sunniest month, September holds its own as an agreeable time for those seeking both warmth and the charm of early autumn in Malmesbury.

Percentage of Sunny Days in September in Malmesbury

The chart illustrates the percentage of sunny days in Malmesbury 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 Malmesbury experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec21%23%28%52%33%27%36%25%26%24%30%19%
Data source: Malmesbury September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Malmesbury in September

As summer fades into autumn, September in Malmesbury, United Kingdom, sees a noticeable transition in daylight duration, with the sun gracing the skies for approximately 12 hours. This marks a decline from the peak of 16 hours enjoyed in both June and July, as nature prepares for the shorter days ahead. Following the vibrant 15 hours of light in May, September still retains a generous glow, though it is a clear step towards the 10 hours expected in October. This gradual decrease hints at the impending cozy ambiance of fall, reminding residents to savor every moment of daylight as the year winds down. With each passing month, Malmesbury beautifully transitions through the rhythm of the seasons, balancing long, sunny days with the serene approach of shorter, quieter evenings.

Average Daylight Hours in Malmesbury for September

The chart illustrates the variation in daylight duration in Malmesbury throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 24m9h 59m11h 55m13h 53m15h 37m16h 31m16h 2m14h 29m12h 34m10h 36m8h 51m7h 54m
Data source: Malmesbury daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Malmesbury

As September unfolds in Malmesbury, the average wind speed settles at 3.5 m/s (8 mph), reflecting a slight drop from the summer months. This gentle breeze carries with it the whispers of autumn, making it a transitional period as the winds begin to pick up again in October. Notably, September’s winds are relatively mild compared to the spring months, where speeds reach 5.2 m/s (12 mph) in February and hover around 4.4 m/s (10 mph) during earlier months of the year. This pattern reveals a gradual cooling trend as the year progresses, with autumn winds promising a refreshing change from the summer stillness. Overall, while September may be characterized by lighter breezes, it sets the stage for the energy of the forthcoming seasons.

Average September Wind Speed in Malmesbury

The chart displays monthly wind speed patterns in Malmesbury, 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.
JanFebMarAprMayJunJulAugSepOctNovDec4.45.24.43.44.23.23.23.73.5 m/s4.43.84.6
Data source: Malmesbury September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Malmesbury Compares to Other Months

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

In September, temperatures in Malmesbury range from a cool 2°C (37°F) to a warm 28°C (84°F), with an average of 14°C (58°F). The month sees about 52 mm (2.1 in) of precipitation over approximately 9 days, coupled with a humidity level of 82%. In contrast, January brings colder weather, with temperatures dipping between -4°C (25°F) and a maximum of 14°C (57°F), averaging around 5°C (41°F). This month experiences slightly higher precipitation at 56 mm (2.2 in) over about 10 days, and humidity rises to 91%. For more information, you can check out Malmesbury weather in January.

In comparing the weather of September and February, there are notable differences in temperature and precipitation. September typically enjoys milder conditions with an average temperature of 14°C (58°F), reaching a maximum of 28°C (84°F), while February is much cooler, with an average temperature of just 6°C (43°F) and a maximum of 18°C (64°F). Additionally, September has lower humidity at 82% compared to February's higher level of 89%. Precipitation is slightly more frequent in February, with 62 mm (2.4 inches) over 12 days, compared to September's 52 mm (2.1 inches) over 9 days. For a more detailed look at February weather, you can visit Malmesbury weather in February.

When comparing the weather in September and March, notable differences emerge. September generally offers milder conditions, with temperatures ranging from a minimum of 2°C (37°F) to a maximum of 28°C (84°F), and an average temperature of 14°C (58°F). In contrast, March experiences cooler temperatures, where the minimum can drop to -6°C (22°F), averaging 7°C (45°F) and peaking at 21°C (70°F). Additionally, September receives about 52 mm (2.1 in) of precipitation over approximately 9 days, while March sees higher rainfall, totaling 69 mm (2.7 in) across around 14 days. Both months exhibit high humidity, with September at 82% and March slightly higher at 86%. For a more detailed look at March weather conditions, you can visit Malmesbury weather in March.

When comparing the weather in September and April, it’s evident that September tends to be warmer overall. In September, temperatures range from a minimum of 2°C (37°F) to a maximum of 28°C (84°F), with an average of 14°C (58°F). This month sees slightly higher precipitation at 52 mm (2.1 in) over an average of 9 rainy days, contributing to a humidity level of 82%. In contrast, April has cooler temperatures, with a minimum of -3°C (26°F) and a maximum of 24°C (76°F), averaging around 9°C (49°F). The precipitation is a bit less at 45 mm (1.8 in), also occurring over 9 days, but the humidity remains high at 85%. For more details on April's weather, you can visit Malmesbury weather in April.

When comparing the weather in September and May, we see some distinct differences. September typically enjoys a wider temperature range, with minimums around 2°C (37°F) and maximums reaching up to 28°C (84°F), resulting in a comfortable average of 14°C (58°F). In contrast, May's temperatures are slightly cooler, with minimums at 0°C (32°F) and maximums at 26°C (78°F), leading to an average of 12°C (54°F). Additionally, September experiences less precipitation with 52 mm (2.1 in) over 9 days, compared to May's 74 mm (2.9 in) over 11 days. Humidity levels are relatively similar, with September at 82% and May at 79%. For more detailed information, you can check Malmesbury weather in May.

In comparing the weather of September and June, we see that September tends to have a wider temperature range, with minimums dropping to 2°C (37°F) and maximums reaching up to 28°C (84°F). In contrast, June enjoys slightly milder temperatures, with minimums at 6°C (42°F) and maximums peaking at 30°C (87°F). The humidity levels are similar, with September at 82% and June at 80%, but June experiences more rainfall, with 72 mm (2.8 in) over 11 days compared to September's 52 mm (2.1 in) over 9 days. For a more detailed look, you can explore Malmesbury weather in June.

In comparing the weather between September and July, we find notable differences in temperature and precipitation patterns. September has a wider temperature range, with minimums dropping to 2°C (37°F) and maximums reaching up to 28°C (84°F), resulting in an average of 14°C (58°F). In contrast, July offers a milder minimum of 7°C (46°F) and a higher maximum of 31°C (89°F), yielding an average of 18°C (64°F). Precipitation also varies slightly, with September receiving 52 mm (2.1 in) over 9 days, while July is wetter with 63 mm (2.5 in) across 11 days. Additionally, September exhibits higher humidity at 82%, compared to July's 71%. For a more detailed look, check out Malmesbury weather in July.

In comparing the weather between August and September, we see a notable shift in temperature and precipitation patterns. August features milder temperatures, with a minimum of 7°C (45°F) and a maximum of 33°C (91°F), averaging around 17°C (62°F). In contrast, September experiences cooler conditions, with a minimum of 2°C (37°F) and a maximum of 28°C (84°F), averaging 14°C (58°F). Precipitation is also more pronounced in August, totaling 74 mm (2.9 in) over 13 days, compared to September's 52 mm (2.1 in) over 9 days. Furthermore, September exhibits higher humidity levels at 82%, while August maintains a slightly lower humidity of 76%. For a detailed look at weather trends in August, you can check Malmesbury weather in August.

September's weather features a wider temperature range with minimums around 2°C (37°F) and maximums reaching 28°C (84°F), offering a pleasant average of 14°C (58°F). The month experiences moderate precipitation, totaling 52 mm (2.1 in) over approximately 9 days, with a humidity level of 82%.

In contrast, October brings cooler temperatures, with a minimum of 0°C (32°F) and a maximum of 23°C (73°F), leading to a lower average of 11°C (53°F). This month sees an increase in precipitation, totaling 103 mm (4.0 in) over 14 days and a higher humidity of 90%. For more detailed information, check out Malmesbury weather in October.

September and November present contrasting weather patterns, with September still holding onto remnants of summer warmth. In September, temperatures can range from a minimum of 2°C (37°F) to a maximum of 28°C (84°F), with an average of 14°C (58°F), accompanied by 52 mm of precipitation over 9 days and a relatively lower humidity of 82%. In stark contrast, November feels much colder, with temperatures dropping to a minimum of -2°C (28°F), averaging 8°C (46°F), and peaking at 16°C (61°F). The month also sees increased precipitation at 62 mm over 12 days, coupled with higher humidity at 92%. For more specific insights into the weather during this month, you can refer to Malmesbury weather in November.

In September, the weather is relatively mild, with average temperatures ranging from a chilly 2°C (37°F) at night to a warm 28°C (84°F) during the day, resulting in an average of 14°C (58°F). This month sees about 52 mm (2.1 in) of precipitation over 9 days, accompanied by a humidity level of 82%. In contrast, December brings colder temperatures, with nighttime lows dropping to -4°C (26°F) and daytime highs capping at 14°C (57°F), yielding an average temperature of 6°C (44°F). The month is wetter, with 89 mm (3.5 in) of precipitation spread over 15 days, and humidity levels rise slightly to 92%. For more detailed information, you can explore Malmesbury weather in December.

Compare Malmesbury's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Malmesbury

As summer transitions into autumn, September in Malmesbury showcases a delightful blend of warmth and cooling breezes. With the average temperature hovering around 14°C (58°F), it's a perfect time for enjoying outdoor activities while the days still gently warm up to a maximum of 28°C (84°F). However, one must also be prepared for occasional rain, as the month sees about 9 wet days contributing to a total precipitation of 52 mm (2.1 in), which sets September apart from the dry summer months. The higher humidity levels of 82% add a touch of lushness to the air, creating a unique atmosphere in the charming town. To explore more about the annual weather patterns in this picturesque location, check out Malmesbury Climate.