September Weather in Southall, United Kingdom

Last updated: March 17, 2025

September in Southall, United Kingdom, presents a captivating blend of variable temperatures and consistent moisture. The month features a maximum temperature peaking at 28°C (83°F), while the average rests comfortably at 15°C (59°F). However, the cooler side brings minimums as low as 4°C (39°F), showcasing the region's unpredictable climate. Rainfall is notable, with 45 mm (1.8 in) accumulated over 10 days, contributing to an 83% humidity level that envelops the area. Visitors and residents alike can expect a transition from warm days to crisp evenings, setting the stage for the approaching autumn.

September Temperature in Southall

September in Southall, United Kingdom, marks a delightful transition as summer bids farewell. With minimum temperatures settling at 4°C (39°F) and an average of 15°C (59°F), the month offers a refreshing respite from the sweltering heat of July and August. The maximum rise to 28°C (83°F) allows for pleasant, sunny days, perfect for outdoor activities and leisurely strolls. This month showcases a gradual decline in temperatures, hinting at the onset of autumn. As the vibrant hues of nature begin to change, September stands out as a time when mild weather makes Southall a charming destination for both locals and visitors alike.

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

The chart illustrates September temperature patterns in Southall, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec414345495562656459534643
Data source: Temperature data for Southall 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 Southall

In September, Southall experiences a noticeable shift in its precipitation patterns, with 45 mm (1.8 in) of rain recorded over approximately 10 days. This figure marks a decline from the wetter months of July and August, which saw 64 mm and 70 mm, respectively. The transition from summer to autumn not only brings cooler temperatures but also a slight reduction in rainy days, hinting at a shift towards more stable weather. While September's rainfall is less than that of the preceding months, it still maintains a significant presence in the climactic tapestry, as autumn sets in and prepares the landscape for the wetter forecasts of October and December.

September Precipitation Trends in Southall

The chart displays monthly precipitation patterns in Southall, 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.
JanFebMarAprMayJunJulAugSepOctNovDec545354336277647045845284
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Southall

In Southall, United Kingdom, September marks a shift in humidity levels as the summer months transition into autumn. With humidity measured at 82%, September presents a noticeable increase compared to the drier July (71%) and August (76%). This uptick indicates a return to the moisture-rich conditions characteristic of the fall season, paving the way for the higher humidity levels experienced in the coming months. As temperatures begin to cool, the atmosphere thickens with humidity, reflecting a broader trend observed throughout the year—where winter months boast the highest humidity, peaking at a brisk 91% in January and 92% in both November and December. Thus, September serves as a bridge, gently guiding Southall from the warmth of summer into the cooler embrace of autumn.

September Average Humidity in Southall

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

In Southall, September marks a transition in the UV Index, showcasing a high exposure category with a UV Index of 6 and a burn time of 25 minutes. This indicates a gradual decline from the peak summer months of July and August, where the UV Index reached 8. Despite being lower than the summer's intense rays, September's UV index still calls for caution, as individuals can still burn relatively quickly if they are not adequately protected. Throughout the year, we observe a clear trend: UV levels generally rise from winter's minimal exposure to summer's peak intensity, before tapering off again in the fall. As you enjoy the late summer sunshine, staying informed about the Southall UV Index remains essential for safe outdoor activities.

Maximum UV Index Levels in Southall for September

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

In September, Southall basks in a delightful 300 hours of sunshine, marking a significant yet gentle decline from the sun-drenched peak of summer. Following the 404 hours of sunlight in July, the gradual shift hints at the coming autumn, yet still offers ample warm days to enjoy outdoor activities. Interestingly, this month bridges the gap between the vibrant summer months and the cooler, grayer days of October, which sees a reduction to 241 hours of sunshine. With September's embrace of golden rays, residents and visitors can revel in one last chance to celebrate the outdoors before the seasonal transition takes hold.

Monthly Sunshine Duration in Southall: September Highlighted

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

Chance of Sun in Southall During September

In Southall, United Kingdom, September offers a 29% chance of sunny weather, making it one of the more favorable months for sunshine as autumn approaches. While this percentage is slightly higher than the summer months of July (38%) and August (25%), it reflects a gradual decline in sunny days compared to the vibrant spring months of April (49%) and the unpredictability of later months like October (25%). September's sunshine potential suggests it’s an ideal time to soak up the fading warmth of the year before clouds dominate the sky in the ensuing months. Despite the fluctuating weather patterns throughout the year, September still holds its own as a bridge between summer and autumn, providing opportunities for enjoyable outdoor activities under the fleeting sun.

Percentage of Sunny Days in September in Southall

The chart illustrates the percentage of sunny days in Southall 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 Southall experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec19%25%29%49%33%28%38%25%29%25%32%17%
Data source: Southall September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Southall in September

As September arrives in Southall, the daylight begins to wane, offering about 12 hours of sunlight—a noticeable decline from the peak brightness of summer. This transition reflects a gradual shift as days shorten from the 16 hours enjoyed in June and July, through 14 hours in August. The lingering warmth of late summer means that the day's brightness still casts a golden hue, but with autumn approaching, the balance is tipping towards shorter days. Following September, daylight will continue to decrease, leading into the cozy, shorter days of October and November, where daylight will further shrink to just 10 hours and 8 hours, respectively. This pattern highlights the enchanting cycle of light that defines the seasons in Southall.

Average Daylight Hours in Southall for September

The chart illustrates the variation in daylight duration in Southall throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 23m9h 58m11h 55m13h 54m15h 38m16h 32m16h 3m14h 30m12h 35m10h 36m8h 50m7h 53m
Data source: Southall daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Southall

As September rolls in Southall, the winds whisper a gentle breeze, with an average speed of 3.3 m/s (7 mph). This marks a subtle decline from the warmer summer months, where winds hovered around 3.8 m/s (8 mph) in August. Notably, the change in wind patterns suggests a shift towards the cooler autumn, echoing a gradual decrease in speed from the early spring highs of 4.7 m/s (11 mph) in February. While the winds remain soft, they carry hints of the seasonal transition, promising not just changes in the air but also in the vibrant landscape that characterizes this picturesque part of the United Kingdom.

Average September Wind Speed in Southall

The chart displays monthly wind speed patterns in Southall, 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.
JanFebMarAprMayJunJulAugSepOctNovDec4.24.74.43.54.23.13.33.83.3 m/s4.43.84.4
Data source: Southall September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Southall Compares to Other Months

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

September and January present starkly contrasting weather conditions. In September, temperatures range from a cool 4°C (39°F) to a warm 28°C (83°F), with an average of 15°C (59°F). The month sees a moderate 45 mm (1.8 in) of precipitation over about 10 days, accompanied by a humidity level of 82%. In contrast, January tends to be much colder, with temperatures spanning from a low of -5°C (24°F) to a maximum of 14°C (58°F) and an average of only 5°C (41°F). It experiences slightly higher precipitation at 54 mm (2.1 in) over the same 10 days, but with a higher humidity level of 91%. For more details about January weather, you can check out Southall weather in January.

When comparing the weather in September and February, notable differences emerge. September features a more temperate range, with average temperatures peaking at 15°C (59°F) and reaching highs of 28°C (83°F), making it a warmer month overall. In contrast, February sees lower temperatures, where the average is only 6°C (43°F), with a maximum of 18°C (65°F) and frequent chilly nights dipping to -5°C (23°F). Both months experience precipitation, with September receiving around 45 mm (1.8 in) over 10 days, while February has slightly more at 53 mm (2.1 in) across 11 days. Humidity levels are also higher in February at 89%, compared to September's 82%. For more detailed insights, check out Southall weather in February.

Comparing the weather in September and March reveals distinct seasonal differences. In September, temperatures range from a mild 4°C (39°F) at night to a warm 28°C (83°F) during the day, with an average of 15°C (59°F). The month experiences about 45 mm (1.8 in) of precipitation over approximately 10 days and maintains a humidity level of 82%. In contrast, March brings cooler temperatures, with a minimum of -5°C (23°F) and a maximum of 22°C (71°F), averaging around 7°C (46°F). This month sees slightly higher precipitation at 54 mm (2.1 in) over about 13 days, alongside a higher humidity of 86%. For more detailed insights into March weather, you can visit Southall weather in March.

In comparing the weather between September and April, September typically offers warmer temperatures, with a minimum of 4°C and an average high of 28°C, while April experiences cooler conditions, featuring a minimum of -2°C and a maximum of 26°C. Both months see a fair amount of precipitation, with September recording 45 mm over 10 days and April slightly less at 33 mm over 8 days. Humidity levels are also quite similar, with September at 82% and April just a bit higher at 85%. For more details on April's climate, you can check Southall weather in April.

In comparing the weather conditions of September and May, we can see some notable differences. September tends to be warmer, with average temperatures ranging from a minimum of 4°C (39°F) to a maximum of 28°C (83°F), compared to May's temperatures that range from a minimum of 1°C (35°F) to a maximum of 25°C (78°F). Additionally, September experiences slightly less precipitation, with 45 mm (1.8 in) over 10 days, whereas May has a higher total of 62 mm (2.5 in) falling over 11 days. Humidity levels are quite similar, with September at 82% and May at 79%. For more detailed insights, you can check Southall weather in May.

In comparing the weather between September and June, September tends to be slightly cooler, with average temperatures ranging from a minimum of 4°C (39°F) to a maximum of 28°C (83°F), while June boasts warmer temperatures, reflecting a range from 7°C (45°F) to 31°C (89°F). Additionally, June experiences more precipitation overall, with 77 mm (3.0 in) over 9 days compared to September's 45 mm (1.8 in) spread over 10 days. Humidity levels are quite similar, with September at 82% and June slightly lower at 80%. For more detailed information on June weather, you can visit Southall weather in June.

In comparing the weather between September and July, we see notable differences in temperature and precipitation patterns. September features a cooler temperature range with a minimum of 4°C (39°F) and an average of 15°C (59°F), whereas July showcases warmer temperatures, with a minimum of 9°C (49°F) and an average of 18°C (65°F), peaking at a maximum of 36°C (96°F). Precipitation is slightly higher in July, accumulating 64 mm (2.5 in) over 11 days compared to September's 45 mm (1.8 in) over 10 days. Additionally, September experiences a higher humidity level at 82% compared to July's 71%, contributing to a more muggy feel as fall approaches. For a closer look at July's weather specifics, you can check out Southall weather in July.

In comparing the weather between August and September, September experiences cooler temperatures overall, with a minimum of 4°C (39°F) and an average of 15°C (59°F), compared to August's warmer minimum of 8°C (47°F) and average of 18°C (64°F). August boasts higher maximum temperatures, reaching up to 34°C (93°F), while September's maximum only hits 28°C (83°F). Additionally, September has slightly less precipitation, with 45 mm (1.8 in) over 10 days, compared to August's 70 mm (2.7 in) over 12 days. However, September's humidity is higher at 82%, compared to August's 76%. For a more detailed look at Southall's weather in August, you can refer to Southall weather in August.

September typically enjoys a warmer climate, featuring average temperatures around 15°C (59°F) and maximums reaching up to 28°C (83°F). In contrast, October sees a noticeable drop in temperatures, with averages falling to 12°C (54°F) and highs peaking at 22°C (73°F). Additionally, October experiences increased humidity and precipitation, with 84 mm (3.3 in) of rain over 12 days compared to September's 45 mm (1.8 in) over 10 days. For more details on the weather during this month, check out Southall weather in October.

September and November present a notable shift in weather patterns. In September, temperatures typically range from a mild 4°C (39°F) at night to a pleasant high of 28°C (83°F) during the day, with an average of 15°C (59°F). The month sees about 45 mm (1.8 in) of precipitation over 10 days and maintains a relatively comfortable humidity level of 82%. In contrast, November brings a cooler climate with minimum temperatures dropping to -2°C (29°F) and averaging around 8°C (47°F), peaking at only 16°C (62°F). Precipitation slightly increases to 52 mm (2.0 in) across 11 days, and humidity rises to 92%, making it feel much more damp. For more detailed information about November weather in Southall, check Southall weather in November.

In September, the weather is significantly warmer with average temperatures hovering around 15°C (59°F), peaking at a comfortable 28°C (83°F). The month sees approximately 45 mm (1.8 in) of precipitation over about 10 days, coupled with a relatively high humidity of 82%. In contrast, December brings a sharp drop in temperatures, with an average of 6°C (44°F) and maximums reaching only 14°C (58°F), while minimums can dip to -4°C (24°F). This month is also wetter, with 84 mm (3.3 in) of precipitation spread over 13 days, and humidity rising to 92%. For more detailed information about December weather in Southall, you can visit Southall weather in December.

Compare Southall's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Southall

As September unfolds in Southall, the weather marks a stark transition from the warm summer months, bringing cooler temperatures that average around 15°C, with an occasional climb to a pleasant 28°C. This month also sees an increase in rainfall, with precipitation on roughly a third of the days, contributing to the humid atmosphere that hovers around 82%. The shifting climate signals the approach of autumn, making this a month of refreshing contrasts. For a deeper dive into Southall's weather patterns, visit Southall Climate.