September Weather in South Bank, United Kingdom

Last updated: March 17, 2025

In September, the South Bank region of the United Kingdom experiences a delightful mix of weather characteristics. With maximum temperatures reaching 25°C (77°F), the month offers a pleasant early autumn ambiance, while the average temperature settles around a comfortable 14°C (57°F). However, temperatures can dip to a minimum of 4°C (40°F) during the nights. A total of 71 mm (2.8 in) of precipitation falls across approximately 12 days, contributing to an 87% humidity level that keeps the air feeling crisp and fresh. This month transitions beautifully from summer into autumn, perfect for enjoying the vibrant atmosphere of the South Bank.

September Temperature in South Bank

As September rolls into South Bank, the air begins to shift, bringing a noticeable chill that contrasts with the warmth of summer. With minimum temperatures hovering around 4°C (40°F) and an average of 14°C (57°F), this month marks a gentle transition towards autumn. Daytime highs can reach a comfortable 25°C (77°F), allowing for pleasant afternoons, though the cooler evenings remind us of the changing seasons. Compared to the more balmy days of July and August, September's temperatures show a slight decline, indicating nature’s shift as foliage prepares to change. This balance of warmth and chill creates the perfect backdrop for outdoor strolls along the river, where the beauty of autumn begins to bloom.

September Weather in South Bank: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in South Bank, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec414243465257616056514642
Data source: Temperature data for South Bank 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 South Bank

In September, South Bank, United Kingdom, experiences a moderate precipitation amount of 71 mm (2.8 in), falling over approximately 12 days. This marks a slight decrease from the wetter summer months of July and August, where rainfall peaked at 74 mm and 80 mm, respectively. As autumn approaches, the weather demonstrates a transition, with September’s rainfall being lower than October's anticipated 89 mm (3.5 in), yet higher than the drier months of April and May which saw only 35 mm (1.4 in) and 56 mm (2.2 in). The consistent rainfall, while less than the summer's peak, indicates a typical British autumn, setting a rhythm of cool, damp days that herald the changing seasons.

September Precipitation Trends in South Bank

The chart displays monthly precipitation patterns in South Bank, 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.
JanFebMarAprMayJunJulAugSepOctNovDec577763355687748071897079
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in South Bank

In September, South Bank experiences a slight uptick in humidity, rising to 87%, a change that aligns with the seasonal shift as autumn approaches. This increase follows a gradual decline throughout the summer months, where humidity levels dipped to their lowest at 82% in August. Interestingly, the trend shows that as the year progresses, humidity generally stays high, particularly in the winter months, peaking at 90% in November. As September blends the remnants of summer with early autumn, one can sense a return to the higher humidity levels that characterize South Bank's climate, signaling the transition into a cooler, wetter season ahead.

September Average Humidity in South Bank

This chart illustrates the average monthly humidity levels in South Bank, 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.
JanFebMarAprMayJunJulAugSepOctNovDec89%87%86%84%83%85%83%82%87%89%90%88%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in South Bank

As summer fades and September settles in South Bank, the UV Index drops to 5, marking a shift to a moderate exposure category. This adjustment allows for a safer sun experience, with a burn time of about 30 minutes for fair-skinned individuals. Following the high indices of the peak summer months, this transition signals a more manageable time for outdoor activities, though caution is still advised. With the sunlight becoming less intense yet still present, it’s crucial to stay mindful of the UV radiation levels. For ongoing updates and insights, check out the South Bank UV Index.

Maximum UV Index Levels in South Bank for September

The chart shows the monthly maximum UV Index (UVI) for South Bank 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.
JanFebMarAprMayJunJulAugSepOctNovDec124568875321
Data source: South Bank 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 South Bank

September in South Bank, United Kingdom, offers a delightful transition from the sun-soaked summer months into the cooler embrace of autumn. With 312 hours of sunshine, it maintains a robust glow, showcasing a noteworthy decrease from July's peak of 417 hours. This gradual decline hints at the seasonal shift, yet September still revels in more sunlight than earlier months like January and November, which are marked by just 90 and 133 hours respectively. The sunshine in September provides a warm farewell to summer, making it an ideal time for locals and visitors alike to enjoy the picturesque riverside walks and vibrant cultural scene before the days grow shorter.

Monthly Sunshine Duration in South Bank: September Highlighted

The September sunshine duration represents the total number of hours South Bank 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.
JanFebMarAprMayJunJulAugSepOctNovDec90h149h223h340h394h379h417h372h312h240h133h103h
Data source: South Bank September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in South Bank During September

In South Bank, United Kingdom, September offers a 24% chance of sunny weather, mirroring the levels seen in both February and March. As the summer months close, the likelihood of sunshine begins to wane, with a noticeable dip from the peak brightness of April at 49%. This trend reflects a gradual transition into autumn, where the promise of clear skies becomes less certain. While September may not boast the sunniest days, the pleasant temperatures still invite opportunities for outdoor enjoyment before the chill of October sets in.

Percentage of Sunny Days in September in South Bank

The chart illustrates the percentage of sunny days in South Bank 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 South Bank experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec25%24%24%49%32%30%36%23%25%22%29%17%
Data source: South Bank September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in South Bank in September

As summer fades into autumn, September in South Bank, United Kingdom, presents a comfortable transition with approximately 12 hours of daylight. This gradual reduction from the 17 hours enjoyed in June underscores the shift towards shorter days as the year progresses. Following the energetic brightness of May and June, September's daylight signifies the end of the vibrant summer season, yet still offers enough light to savor the lingering warmth. This month marks a significant dip from the previous summer highs but is still a welcome stretch of daylight compared to the winter months ahead. With daylight hours reducing steadily as October approaches, September beckons as a time to relish the last remnants of longer days before retreating into the early darkness of winter.

Average Daylight Hours in South Bank for September

The chart illustrates the variation in daylight duration in South Bank throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec7h 56m9h 43m11h 54m14h 7m16h 5m17h 8m16h 34m14h 47m12h 38m10h 26m8h 26m7h 21m
Data source: South Bank daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in South Bank

As summer gracefully surrenders to autumn, September in South Bank offers a gentle breeze with an average wind speed of 4.0 m/s (9 mph), mirroring the light winds of August. This consistency in breeziness marks a subtle shift from the warm, lazy days of summer to the crisp, invigorating air of fall. While April and May also showcased similar low wind speeds, a noticeable uptick occurs as we transition into October, where winds pick up to 5.7 m/s (13 mph), foreshadowing the brisk conditions that characterize the upcoming months. This rhythmic ebb and flow of wind speeds illustrates the dynamic climate of the region, as each month unveils a nuanced chapter in South Bank’s seasonal narrative.

Average September Wind Speed in South Bank

The chart displays monthly wind speed patterns in South Bank, 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.
JanFebMarAprMayJunJulAugSepOctNovDec4.96.15.33.93.93.73.14.04.0 m/s5.75.64.9
Data source: South Bank September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in South Bank Compares to Other Months

The weather in South Bank 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 South Bank and find detailed weather information for every month.

In September, temperatures range from a chilly minimum of 4°C (40°F) to a pleasant maximum of 25°C (77°F), with an average of 14°C (57°F). This month experiences about 71 mm (2.8 in) of precipitation spread over 12 days, while humidity remains high at 87%. In contrast, January sees much colder conditions, with temperatures dropping to a minimum of -3°C (27°F) and peaking at a milder 14°C (57°F), averaging at 5°C (41°F). Precipitation is slightly lower at 57 mm (2.2 in) across 10 days, and humidity edges up to 89%. For more detailed insights, check out South Bank weather in January.

September and February present distinctly different weather patterns. In September, temperatures range from a mild 4°C (40°F) at night to a warm average of 14°C (57°F) during the day, peaking at 25°C (77°F). There is moderate precipitation, averaging 71 mm (2.8 in) over 12 days, while humidity remains high at 87%. In contrast, February experiences much colder temperatures, with minimums dropping to -6°C (22°F) and an average of 5°C (42°F), reaching a maximum of only 15°C (59°F). Although February sees a similar level of humidity at 87%, it receives slightly more precipitation, totaling 76 mm (3.0 in) over 14 days. For more details on February weather conditions, you can visit South Bank weather in February.

In comparing the weather between September and March, a notable difference can be observed in temperatures. September enjoys a milder climate with minimum temperatures around 4°C (40°F), averaging 14°C (57°F), and reaching a pleasant maximum of 25°C (77°F). In contrast, March is considerably cooler, starting with minimum temperatures dropping to -4°C (25°F) and averaging only 6°C (44°F), with a maximum of 16°C (61°F).

Both months experience a fair amount of precipitation, with September receiving 71 mm (2.8 in) over 12 days, while March has slightly less at 63 mm (2.5 in) across 14 days. Humidity levels are fairly similar, hovering around 87% in September and 85% in March. For a detailed outlook on March weather specifically, you can visit South Bank weather in March.

September and April exhibit distinct differences in weather patterns. September typically boasts milder temperatures, with nighttime lows around 4°C (40°F) and daytime highs reaching up to 25°C (77°F), while April experiences cooler conditions, with temperatures ranging from a low of -2°C (29°F) to a high of 20°C (68°F). Additionally, September sees higher average precipitation at 71 mm (2.8 in) over approximately 12 days, compared to April's 35 mm (1.4 in) spread across 7 days. Humidity levels are relatively high in both months, at 87% for September and 84% for April, contributing to a sense of dampness in the air. For more detailed information about the weather in April, you can check South Bank weather in April.

When comparing September and May weather, it's clear that September tends to be warmer overall. September boasts average temperatures around 14°C (57°F), with maximums reaching up to 25°C (77°F), while May's average is cooler at 11°C (52°F), peaking at 22°C (72°F). Despite September's higher temperatures, it also experiences more precipitation, averaging 71 mm (2.8 in) over 12 days, compared to May's 56 mm (2.2 in) across 13 days. Humidity levels are slightly higher in September at 87%, while May has a comfortable 83%. For a closer look at the weather in May, you can check South Bank weather in May.

In September, the weather features a minimum temperature of 4°C (40°F), leading to a slightly cooler average of 14°C (57°F) as well as a maximum temperature that can reach up to 25°C (77°F). The month experiences an average precipitation of 71 mm (2.8 in) over approximately 12 days, with a high humidity of 87%. In comparison, June has a minimum temperature of 6°C (43°F) and shares the same average and maximum temperatures as September. However, it tends to be wetter, with 87 mm (3.4 in) of precipitation across 11 days and a slightly lower humidity of 85%. For more details on the June weather experience, you can check South Bank weather in June.

When comparing the weather in September and July, notable differences emerge in temperature and precipitation patterns. September tends to feature cooler temperatures, with an average of 14°C (57°F) and a maximum of 25°C (77°F), while July sees warmer conditions, averaging 16°C (61°F) with highs of 28°C (84°F). Both months experience similar levels of precipitation, with September recording 71 mm (2.8 in) over 12 days, slightly less than July's 74 mm (2.9 in) across 13 days. Humidity is higher in September at 87%, compared to July's 83%. For more specific details about July weather, you can check South Bank weather in July.

Comparing the weather in September and August reveals some notable differences. In September, the temperatures range from a minimum of 4°C (40°F) to a maximum of 25°C (77°F), with an average of 14°C (57°F). In contrast, August typically sees warmer temperatures, with a minimum of 8°C (47°F) and a maximum of 26°C (79°F), averaging around 16°C (61°F). Precipitation levels are slightly higher in August at 80 mm (3.1 in) over 15 days, compared to September's 71 mm (2.8 in) over 12 days. Interestingly, September also experiences higher humidity at 87%, compared to August's 82%. For more detailed insights, you can visit South Bank weather in August.

September tends to be milder compared to October, with average temperatures reaching a maximum of 25°C (77°F), while October sees a drop to a maximum of 21°C (69°F). The minimum temperatures also reflect this cooling trend, falling from 4°C (40°F) in September to 2°C (36°F) in October. Precipitation is slightly increased in October, with 89 mm (3.5 in) over 16 days, compared to 71 mm (2.8 in) over 12 days in September. Humidity levels remain similar, rising from 87% in September to 89% in October, adding to the crispness of the fall air. For more specific information, you can check South Bank weather in October.

In September, temperatures range from a minimum of 4°C (40°F) to a maximum of 25°C (77°F), leading to a pleasant average of 14°C (57°F). The month experiences around 71 mm (2.8 in) of precipitation over 12 days, accompanied by relatively high humidity at 87%. In contrast, November sees cooler temperatures, with a minimum of -1°C (30°F) and a maximum of 16°C (61°F), resulting in a lower average of 8°C (46°F). Although the total precipitation in November is slightly less at 69 mm (2.7 in), it occurs over more days (14), and humidity rises to 90%. For more details on the weather variations in this month, check the South Bank weather in November.

In September, the weather features milder temperatures, with a minimum of 4°C (40°F) and an average high of 25°C (77°F), leading to a more pleasant outdoor experience. In contrast, December brings colder conditions, with temperatures ranging from a minimum of -3°C (27°F) to a maximum of 13°C (55°F), creating a stark difference in the overall climate. While September has a total precipitation of 71 mm (2.8 in) over approximately 12 days, December sees slightly more rainfall at 79 mm (3.1 in) across around 15 days, making it a wetter month. The humidity remains fairly consistent, with September at 87% and December at 88%, underscoring the chilly dampness typical of winter. For more detailed information, you can check South Bank weather in December.

Compare South Bank's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in South Bank

As September ushers in the transition from summer to autumn, South Bank experiences a noticeable shift in weather patterns. With a maximum temperature around 25°C (77°F), the warmth remains palpable, but the average cools to a mild 14°C (57°F), marking a departure from the peak summer heat. The month sees an uptick in precipitation, with rain showering the area on 12 days, contributing to the 87% humidity level that can make the air feel quite heavy. This combination of cooler temperatures and increased moisture sets September apart, hinting at the changes seasons ahead. For detailed insights into what to expect year-round, visit South Bank Climate.