September Weather in Cheltenham, United Kingdom

Last updated: March 17, 2025

September in Cheltenham, United Kingdom showcases a diverse climate marked by a blend of warm and cool conditions. With a maximum temperature soaring to 30°C (85°F) and an average of 14°C (58°F), the month offers glimpses of late summer warmth. However, mornings can be brisk, dipping to a minimum of 2°C (36°F). Rainfall makes its presence felt, accumulating 56 mm (2.2 in) across 9 rainy days, contributing to the 82% humidity that envelops the town. This combination of warmth and moisture creates a dynamic atmosphere, perfect for exploring Cheltenham's scenic beauty during this transitional time of year.

September Temperature in Cheltenham

As summer fades and autumn begins in Cheltenham during September, temperatures start to showcase a gentle decline, reflecting the transition of seasons. The month typically sees minimums around 2°C (36°F), offering a crispness in the air, while averages hover at a comfortable 14°C (58°F). In contrast, the highs can still reach a pleasant 30°C (85°F), reminiscent of late summer warmth. This variation allows for enjoyable afternoons basking in the retained sunlight, yet cooler evenings introduce a refreshing chill. As the month progresses, the shift from the warmth of summer to the refreshing embrace of autumn highlights a beautiful balance, making September a captivating time in Cheltenham.

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

The chart illustrates September temperature patterns in Cheltenham, 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 Cheltenham 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 Cheltenham

In September, Cheltenham experiences a moderate shift in weather patterns, marked by a precipitation total of 56 mm (2.2 in) over 9 days—slightly less than the summer months. This marks a transition from the wetter August, which recorded a higher rainfall of 73 mm (2.9 in) across 13 days. The trend reflects the approach of autumn, as precipitation tends to increase in the following months. With figures in September maintaining a balance, this month often serves as a gentle precursor to the wetter conditions that typically characterize October, which averages 92 mm (3.6 in). Such variations underscore the dynamic nature of Cheltenham's climate and set the stage for the seasonal shifts that follow.

September Precipitation Trends in Cheltenham

The chart displays monthly precipitation patterns in Cheltenham, 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.
JanFebMarAprMayJunJulAugSepOctNovDec535767477176687356926986
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Cheltenham

In September, Cheltenham experiences a noticeable shift in humidity, averaging 82%, which marks a transition from the warmer summer months. This slight increase from August's 76% reflects the onset of autumn, as the region prepares for the cooler and wetter months ahead. Over the year, humidity peaks during the colder winter months, with January and February showcasing levels as high as 91% and 89%, respectively. This trend highlights a consistent pattern of increasing humidity as the year progresses towards fall and winter, providing a backdrop to the shifting seasons in this charming UK town.

September Average Humidity in Cheltenham

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

As September rolls into Cheltenham, the UV Index averages a high level of 6, reflecting a gradual decline in sun intensity as summer draws to a close. This month marks a slight decrease from August's index of 7, yet sun safety remains important, with a burn time of just 25 minutes for unprotected skin. Following the peak summer months of June and July, where the UV Index reached 8, September indicates a transition to more moderate sun exposure. It's crucial to stay vigilant, as the sun can still deliver a strong punch this time of year. For further insights and detailed forecasts, explore the Cheltenham UV Index.

Maximum UV Index Levels in Cheltenham for September

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

September in Cheltenham, United Kingdom, brings a gentle decline in sunshine, with 280 hours illuminating the month. Following the vibrant summer months of July and August, which boasted an impressive 384 and 336 hours respectively, September transitions the region into autumn's embrace. Although sun-soaked days may seem fewer, this amount still surpasses earlier months such as January and February, which struggle with a mere 86 and 140 hours of sunshine. As the year progresses, it's clear that Cheltenham enjoys its sunniest streak from late spring through summer, but September provides a perfect golden hour to relish the lingering warmth before the briskness of fall sets in.

Monthly Sunshine Duration in Cheltenham: September Highlighted

The September sunshine duration represents the total number of hours Cheltenham 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.
JanFebMarAprMayJunJulAugSepOctNovDec86h140h188h300h373h351h384h336h280h221h124h104h
Data source: Cheltenham September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Cheltenham During September

In September, Cheltenham experiences a 27% chance of sunny weather, which aligns closely with the summer months where sunshine is more temperate yet still offers fleeting moments of brightness. While this figure is a slight dip from the peak of 49% in April, it reflects a transition as autumn approaches, characterized by varying weather conditions. Interestingly, September's sunshine likelihood sits above the winter months but trails behind the sunnier days of late spring and early summer. With a mix of potential sun and the refreshing onset of fall, September in Cheltenham can be delightful for those who enjoy mild weather interspersed with sunny spells.

Percentage of Sunny Days in September in Cheltenham

The chart illustrates the percentage of sunny days in Cheltenham 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 Cheltenham experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec22%23%26%49%31%26%36%24%27%23%31%17%
Data source: Cheltenham September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Cheltenham in September

As September unfolds in Cheltenham, the days begin to shorten, with daylight lasting around 12 hours. Following the long, sun-drenched days of June and July, which each boasted an impressive 16 hours of daylight, the gradual transition towards autumn becomes evident. By the end of the summer, August sees daylight slightly diminishing to 14 hours, while September marks a notable drop as nature starts preparing for the cool embrace of fall. This trend will continue into the following months, leading to shorter days in October and eventually to the winter months, where daylight plummets to just 7 hours in December. Thus, September serves as a gentle reminder of the fleeting nature of summer and the coming changes in the Cheltenham skyline.

Average Daylight Hours in Cheltenham for September

The chart illustrates the variation in daylight duration in Cheltenham throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 21m9h 56m11h 55m13h 55m15h 41m16h 36m16h 6m14h 32m12h 35m10h 35m8h 47m7h 50m
Data source: Cheltenham daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Cheltenham

As summer gently fades into autumn, September in Cheltenham experiences a mild shift in wind conditions, with an average speed of 3.4 m/s (8 mph). This month marks a notable change from the breezy warmth of August, which enjoyed slightly higher winds at 3.8 m/s. Throughout the year, we see a trend where wind speeds generally hover around the lower side, especially in the summer months, with July recording the calmest winds at 3.0 m/s. However, as autumn approaches, the stronger gusts return, with October's average speeding back up to 4.7 m/s (10 mph), hinting at the revitalizing breezes that often accompany the fall foliage. Thus, while September tends to be relatively tranquil, it serves as a gentle prelude to the more invigorating winds that follow in the season.

Average September Wind Speed in Cheltenham

The chart displays monthly wind speed patterns in Cheltenham, 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.
JanFebMarAprMayJunJulAugSepOctNovDec4.35.34.53.34.13.33.03.83.4 m/s4.73.94.6
Data source: Cheltenham September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Cheltenham Compares to Other Months

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

September and January present distinctly different weather patterns. In September, temperatures range from a minimum of 2°C (36°F) to a maximum of 30°C (85°F), with an average of 14°C (58°F), making it a much warmer time of year. The humidity is slightly lower at 82%, with rainfall totaling 56 mm (2.2 in) over about 9 days. In contrast, January experiences colder conditions, with temperatures ranging from a minimum of -5°C (24°F) to a maximum of 14°C (57°F), averaging just 5°C (41°F). This month has a higher humidity level of 91% and sees a similar amount of rainfall, 53 mm (2.1 in), spread over approximately 10 days. For more details, check out Cheltenham weather in January.

September and February exhibit distinct weather patterns, with September showcasing a warmer climate compared to the chill of February. In September, temperatures can range from a minimum of 2°C (36°F) to a maximum of 30°C (85°F), averaging around 14°C (58°F) and accompanied by relatively lower humidity at 82%. In contrast, February's weather is notably cooler, with temperatures ranging from a minimum of -6°C (21°F) to a maximum of 18°C (65°F) and an average of just 6°C (43°F). This month also experiences higher humidity at 89% and slightly more precipitation, with rain falling on 11 days compared to September's 9 days. For a detailed overview of February weather, you can visit Cheltenham weather in February.

In comparing the weather of September and March, notable differences emerge. September enjoys a broader temperature range, with minimums around 2°C (36°F) and maximums reaching up to 30°C (85°F), contributing to a pleasant average of 14°C (58°F). This month experiences relatively lower precipitation at 56 mm (2.2 in) across about 9 days, with a humidity level of 82%. In contrast, March presents a chillier climate, with minimum temperatures dropping to -6°C (21°F) and a milder maximum of 21°C (70°F), averaging only 7°C (45°F). The month is slightly wetter, with 67 mm (2.6 in) of rain over 14 days and a higher humidity of 86%. For a detailed look at the weather specific to Cheltenham, take a glance at Cheltenham weather in March.

September and April display distinct differences in weather patterns, with September generally being warmer. In September, temperatures range from a minimum of 2°C (36°F) to a maximum of 30°C (85°F), averaging around 14°C (58°F), while April sees lower temperatures, with a minimum of -3°C (27°F) and a maximum of 24°C (76°F), averaging 9°C (49°F). Both months experience similar precipitation, with September recording 56 mm (2.2 in) and April slightly lower at 47 mm (1.8 in), each with rain on about 9 days. Humidity levels are quite comparable as well, with September at 82% and April slightly higher at 85%. For a more detailed look at the climate in April, you can visit Cheltenham weather in April.

In comparing the weather of September and May, September tends to have a broader temperature range, with minimums reaching 2°C (36°F) and maximums soaring up to 30°C (85°F), whereas May features a cooler range of temperatures with minimums at 0°C (32°F) and maximums of 26°C (79°F). Both months exhibit notable humidity levels, with September slightly higher at 82% compared to May's 79%. Precipitation in May is also more frequent, occurring on 12 days with a total of 71 mm (2.8 in), while September sees precipitation on 9 days totaling 56 mm (2.2 in). For a more detailed look at May weather in Cheltenham, check out Cheltenham weather in May.

In comparing the weather of September and June, both months experience similar maximum temperatures, peaking around 30°C (85°F to 87°F). However, September sees a broader range with minimum temperatures dropping to 2°C (36°F), while June starts at a warmer minimum of 6°C (43°F). Average temperatures in September are slightly lower at 14°C (58°F) compared to June's 16°C (61°F). Additionally, September experiences less precipitation with 56 mm (2.2 in) over 9 days, whereas June has 75 mm (3.0 in) spread across 12 days. Humidity remains relatively high in both months, with September at 82% and June at 80%. For more detailed insights, you can check Cheltenham weather in June.

When comparing the weather between September and July, it is clear that July typically records warmer temperatures, with average highs reaching up to 32°C (91°F) compared to September's maximum of 30°C (85°F). The minimum temperatures in July are also higher, starting at 7°C (44°F) versus September's cooler 2°C (36°F). However, September tends to have a higher humidity level at 82%, compared to July's 71%. Additionally, September experiences slightly less precipitation overall, with 56 mm (2.2 in) falling over 9 days, while July sees 68 mm (2.7 in) across 11 days. For more detailed information on July weather, you can check out Cheltenham weather in July.

September weather in Cheltenham shows a noticeable drop in temperature compared to August, with minimums reaching as low as 2°C (36°F) and average temperatures around 14°C (58°F). In contrast, August temperatures typically ranged from a minimum of 7°C (45°F) to a maximum of 34°C (93°F), making it significantly warmer. Additionally, September experiences slightly less precipitation, totaling 56 mm (2.2 in) over 9 days, compared to August's 73 mm (2.9 in) over 13 days. The humidity is also higher in September at 82%, compared to August's 76%. For more details on August weather, you can check out Cheltenham weather in August.

In September, temperatures in Cheltenham range from a mild minimum of 2°C (36°F) to a warm maximum of 30°C (85°F), leading to an average of 14°C (58°F). The month experiences relatively low precipitation of 56 mm (2.2 in) over 9 days, with humidity sitting at 82%. In contrast, October brings significantly cooler weather, with temperatures dipping to a minimum of -1°C (31°F) and an average of 11°C (53°F), peaking at 23°C (74°F). This month also sees increased rainfall, accumulating 92 mm (3.6 in) across 14 days, and a rise in humidity levels to 90%. For more detailed information about October weather in Cheltenham, you can check Cheltenham weather in October.

In comparing the weather between September and November, a distinct shift in temperature and conditions is evident. September features a broader temperature range, with minimums of 2°C (36°F) and maximums reaching 30°C (85°F), resulting in an average of 14°C (58°F). In contrast, November experiences cooler conditions, with minimum temperatures dropping to -3°C (27°F) and a much lower average of 8°C (46°F). Additionally, November sees increased precipitation, totaling 69 mm (2.7 in) over 13 days, compared to September's 56 mm (2.2 in) over 9 days. Humidity levels are also higher in November at 92%, compared to September's 82%. For more detailed information, visit Cheltenham weather in November.

September and December present notably different weather patterns. In September, temperatures range from a mild 2°C (36°F) at night to a warm 30°C (85°F) during the day, with an average of 14°C (58°F). The month experiences 56 mm (2.2 in) of precipitation over approximately 9 days, and humidity levels sit at a comfortable 82%. In contrast, December brings much colder conditions, with temperatures dropping to a minimum of -9°C (16°F) and an average of just 6°C (43°F). The maximum temperature reaches only 14°C (58°F), and precipitation increases to 86 mm (3.4 in) spread across 16 days, accompanied by higher humidity levels at 92%. For more detailed insights on December weather, you can visit Cheltenham weather in December.

Compare Cheltenham's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Cheltenham

As summer transitions to autumn, September in Cheltenham offers a delightful mix of warmth and a touch of coolness, setting it apart from the hotter months. With an average temperature of 14°C (58°F) and a peak reaching up to 30°C (85°F), this month presents a comfortable climate, punctuated by refreshing breezes. However, don't forget the occasional rain, as September sees about 56 mm (2.2 in) of precipitation across approximately 9 days – a sharp contrast to the dry spells of midsummer. The humidity level, hovering around 82%, adds a certain richness to the air, making September an enchanting time to experience Cheltenham’s changing landscape. For more detailed insights, explore the full picture at Cheltenham Climate.