September Weather in Southend-on-Sea, United Kingdom

Last updated: March 17, 2025

September in Southend-on-Sea, United Kingdom offers a delightful blend of mild temperatures and refreshing coastal breezes. With maximum highs reaching 24°C (75°F) and an average of 16°C (61°F), this month is ideal for outdoor enthusiasts. However, prepare for some rain, as 57 mm (2.2 in) of precipitation can be expected over approximately 10 days, contributing to the area's vibrant greenery. The 80% humidity adds a touch of freshness to the air, creating a charming seaside atmosphere perfect for exploring this enchanting destination.

September Temperature in Southend-on-Sea

As the summer gives way to autumn, September in Southend-on-Sea presents a delightful transition. With average temperatures hovering around 16°C (61°F), the city enjoys a mild climate that invites outdoor activities. The minimum temperature of 8°C (46°F) still carries a hint of warmth from the preceding months, while the maximum reaches a comfortable 24°C (75°F), offering plenty of sunny days. This month stands out as a perfect balance, bridging the gap between the sultry heat of summer and the crispness of fall, making it an ideal time for leisurely strolls by the seaside and enjoying the vibrant surroundings as they begin to shift into autumn hues.

September Weather in Southend-on-Sea: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Southend-on-Sea, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec424345495562656561554844
Data source: Temperature data for Southend-on-Sea 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 Southend-on-Sea

September in Southend-on-Sea sees a moderate precipitation total of 57 mm (2.2 in), marking a slight dip from the wetter months of August and preceding summer. With an average of 10 rainy days, this month often serves as a transition into the more drizzly autumn and winter seasons. Compared to the heavier rainfall of October, which boasts 99 mm (3.9 in), September presents a brief respite with relatively milder conditions. The prevalence of rain subsides notably from the 81 mm (3.2 in) of August, yet shows resilience, affirming that fall is on the horizon. As summer's warmth fades, residents can expect the occasional shower, offering a chance to enjoy the lingering mild weather before winter arrives.

September Precipitation Trends in Southend-on-Sea

The chart displays monthly precipitation patterns in Southend-on-Sea, 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.
JanFebMarAprMayJunJulAugSepOctNovDec68735829657167815710059107
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Southend-on-Sea

As summer transitions into autumn, September in Southend-on-Sea sees a slight rebound in humidity levels, rising to 80% after the warmer months of July and August, which recorded their lowest at 76% and 73%, respectively. This gradual increase is consistent with the typical shift in weather patterns during this time of year, as the region prepares for the cooler, more humid conditions of October, where humidity spikes to 89%. Overall, September stands as a reminder of the lingering warmth of summer while hinting at the dampness of the approaching autumn months, marking a pivotal point in the seasonal cycle of humidity.

September Average Humidity in Southend-on-Sea

This chart illustrates the average monthly humidity levels in Southend-on-Sea, 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%82%81%76%73%80%89%92%92%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Southend-on-Sea

As September unfolds in Southend-on-Sea, the UV Index reflects a shift towards moderate levels, peaking at 5. This trend marks a gentle decline from the intense sunshine of the summer months, where the index reached a high of 8 in both June and July. With a burn time of 30 minutes, it remains essential for residents and visitors alike to stay informed and protected against UV rays, especially when engaging in outdoor activities. Looking back through the year, September's UV Index shows a gradual transition from the scorching summer days to the cooler autumn, suggesting an ideal period for enjoying the outdoors while still taking precautions. For more detailed insights, visit Southend-on-Sea UV Index.

Maximum UV Index Levels in Southend-on-Sea for September

The chart shows the monthly maximum UV Index (UVI) for Southend-on-Sea 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.
JanFebMarAprMayJunJulAugSepOctNovDec124578875421
Data source: Southend-on-Sea 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 Southend-on-Sea

As we transition into September in Southend-on-Sea, the sunshine remains abundant, offering an impressive 318 hours of bright days. This month stands out as a beautiful continuation of the summer's warmth, following a peak in July with 419 hours. Although September's sunshine is lower than the balmy summer months, it significantly surpasses the gloomy winter months, reminding us of the vibrant days that lie behind. Interestingly, this month signals a gentle decline in sunlight as the autumn months approach, with October expected to bring a further reduction to 250 hours. Nonetheless, September serves as a lovely bridge between the sunny splendors of summer and the cozy, overcast days of fall, inviting residents and visitors alike to savor the fading warmth and light.

Monthly Sunshine Duration in Southend-on-Sea: September Highlighted

The September sunshine duration represents the total number of hours Southend-on-Sea 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.
JanFebMarAprMayJunJulAugSepOctNovDec97h154h230h342h415h412h419h393h318h250h161h114h
Data source: Southend-on-Sea September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Southend-on-Sea During September

As summer bids farewell, September in Southend-on-Sea sees a 33% chance of sunny weather, aligning closely with the sunny outlook of March. This month follows a gradual decline from the peak of June's 30% and July's 41%, suggesting that while the sun may still make an appearance, it’s part of a broader seasonal shift towards cooler days. Interestingly, October and November bring a slight rise, with chances of sunshine bouncing back to 27% and 31% respectively, hinting that Southend-on-Sea might surprise visitors with crisp, sunny autumn days. Overall, September offers a balanced transition, where the warmth of summer lingers just a bit longer, making it a pleasant time for beachgoers and explorers alike.

Percentage of Sunny Days in September in Southend-on-Sea

The chart illustrates the percentage of sunny days in Southend-on-Sea 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 Southend-on-Sea experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec19%25%33%49%36%30%41%32%33%27%31%18%
Data source: Southend-on-Sea September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Southend-on-Sea in September

As September arrives in Southend-on-Sea, the days begin to shorten after the vibrant summer months. With 12 hours of daylight, this fall month marks a gentle transition from the long, sun-drenched days of June and July, which boast a maximum of 16 hours. Following the peak of summer brightness, August sees a decline to 14 hours, and September continues this trend, imparting a sense of cozy anticipation for autumn. As the days become shorter, the shift not only influences the local scenery but also invites residents to embrace the changing seasons, preparing for the crispness of October ahead, which brings only 10 hours of daylight. This gradual dimming echoes nature's rhythm, as Southend-on-Sea welcomes the mellow warmth and rich colors of early fall.

Average Daylight Hours in Southend-on-Sea for September

The chart illustrates the variation in daylight duration in Southend-on-Sea 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 58m11h 55m13h 53m15h 37m16h 31m16h 2m14h 29m12h 34m10h 37m8h 51m7h 54m
Data source: Southend-on-Sea daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Southend-on-Sea

In September, Southend-on-Sea experiences a gentle breeze with an average wind speed of 4.3 m/s (10 mph), making it one of the calmest months of the year. This slight decrease from the summer months reflects a transition towards the more brisk autumn winds that begin to emerge in October. As the year progresses, wind speeds generally fluctuate, peaking in the colder months. Notably, January and October showcase the strongest gusts, while the milder September winds provide a serene backdrop for enjoying the last of the summer vibes along the stunning seafront. The cool, refreshing air of September serves as a reminder of the changing seasons, inviting locals and visitors alike to enjoy the tranquil beauty of this coastal gem before the chill of winter sets in.

Average September Wind Speed in Southend-on-Sea

The chart displays monthly wind speed patterns in Southend-on-Sea, 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.
JanFebMarAprMayJunJulAugSepOctNovDec5.66.15.44.75.23.94.45.14.3 m/s5.55.05.5
Data source: Southend-on-Sea September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Southend-on-Sea Compares to Other Months

The weather in Southend-on-Sea 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 Southend-on-Sea and find detailed weather information for every month.

In September, temperatures typically range from a minimum of 8°C (46°F) to a maximum of 24°C (75°F), with an average of 16°C (61°F). The month sees about 57 mm (2.2 in) of precipitation over approximately 10 days, and humidity levels average around 80%. In contrast, January experiences a much colder climate, with temperatures ranging from a chilly -1°C (30°F) to a maximum of 13°C (56°F) and an average of just 5°C (42°F). Precipitation in January is slightly higher at 68 mm (2.7 in), spread over about 12 days, and humidity levels are also elevated at 91%. For a detailed look at January weather specifics, visit Southend-on-Sea weather in January.

September and February exhibit stark contrasts in weather conditions. In September, temperatures range from a mild 8°C (46°F) to a pleasant 24°C (75°F), with an average of 16°C (61°F), while February experiences much colder weather, with temperatures dropping as low as -3°C (27°F) and averaging only 6°C (43°F). Precipitation is also higher in February, totaling 73 mm (2.9 in) over 14 days, compared to September’s 57 mm (2.2 in) over 10 days. Additionally, February has a higher humidity level at 89%, compared to September’s 80%. For a more detailed look at February's weather, visit Southend-on-Sea weather in February.

When comparing the weather in September and March, a clear contrast emerges. September typically enjoys milder temperatures, with an average of 16°C (61°F) and maximums reaching up to 24°C (75°F), while March averages a cooler 7°C (46°F) with maximums of only 17°C (63°F). Precipitation levels are similar, with September receiving 57 mm (2.2 in) across about 10 days, while March slightly increases to 58 mm (2.3 in) over 13 days. Additionally, humidity is higher in March at 86%, compared to September's 80%. For a detailed look at March’s weather conditions, you can visit Southend-on-Sea weather in March.

When comparing the weather in September and April, notable differences emerge. September tends to be warmer with average temperatures reaching 16°C (61°F) and maximums of 24°C (75°F), while April's average temperature hovers around 9°C (49°F), peaking at 21°C (70°F). Precipitation levels also differ; September experiences 57 mm (2.2 in) over approximately 10 days, whereas April sees only 29 mm (1.1 in) across 7 days. Humidity is slightly higher in April at 85%, compared to September's 80%. For more detailed insights, you can refer to Southend-on-Sea weather in April.

September and May present distinct weather patterns, each marking a transition in seasons. In September, temperatures range from a minimum of 8°C (46°F) to a comfortable maximum of 24°C (75°F), with an average of 16°C (61°F). The month experiences about 57 mm (2.2 in) of precipitation across approximately 10 days, along with a humidity level of 80%. In contrast, May has slightly cooler temperatures, with a minimum of 4°C (39°F) and a maximum of 23°C (73°F), averaging 13°C (55°F). This month sees a bit more rain, totaling around 65 mm (2.6 in) over 11 days, and humidity is marginally higher at 82%. For more details on the weather during this time, you can check Southend-on-Sea weather in May.

September and June in Southend-on-Sea exhibit similar average temperatures, with June having slightly warmer conditions. In June, the daily temperature ranges from a minimum of 9°C (49°F) to a maximum of 26°C (79°F), while September features temperatures between 8°C (46°F) and 24°C (75°F). Both months experience significant humidity, hovering around 80% in September and 81% in June. Precipitation is slightly higher in June, receiving 70 mm (2.8 in) over 9 days compared to September’s 57 mm (2.2 in) over 10 days. For a detailed look at June's weather patterns, you can visit Southend-on-Sea weather in June.

When comparing the weather in September to that of July, notable differences in temperature and precipitation can be observed. September experiences cooler temperatures, with a minimum of 8°C (46°F) and an average of 16°C (61°F), while July boasts warmer conditions, starting at a minimum of 12°C (53°F) and reaching highs of 30°C (86°F). Additionally, September sees slightly less precipitation, averaging 57 mm (2.2 in) over about 10 days, compared to July's 67 mm (2.6 in) over 12 days. Humidity levels remain relatively high in both months, but September is slightly more humid at 80%, while July records 76%. For more detailed insights, check out Southend-on-Sea weather in July.

In September, the weather cools down compared to August, with minimum temperatures dropping to 8°C (46°F) and maximum temperatures reaching only 24°C (75°F), whereas August offers a warmer range from 11°C (51°F) to a high of 29°C (84°F). Additionally, September experiences higher humidity at 80% despite having less precipitation overall, receiving 57 mm (2.2 in) over about 10 days, compared to 81 mm (3.2 in) over 13 days in August. For a detailed look at the climate, you can check Southend-on-Sea weather in August.

In September, the weather typically features a milder average temperature of 16°C (61°F), with a maximum of 24°C (75°F) and a minimum of 8°C (46°F). The month sees about 57 mm (2.2 in) of precipitation over 10 days and maintains a humidity level of 80%.

As we transition into October, temperatures drop slightly, with an average of 13°C (55°F), a maximum of 21°C (71°F), and a minimum temperature of 5°C (41°F). This month experiences increased rainfall, totaling 99 mm (3.9 in) over 15 days, coupled with higher humidity at 89%. The contrast in weather conditions between September and October can be quite striking, making the latter month feel noticeably cooler and wetter. For more detailed insights, check out Southend-on-Sea weather in October.

In September, the weather is generally milder, with temperatures ranging from a minimum of 8°C (46°F) to a maximum of 24°C (75°F), and an average of 16°C (61°F). The month experiences about 57 mm (2.2 in) of precipitation over roughly 10 days, and humidity levels hover around 80%. In contrast, November sees much cooler temperatures, with a minimum of 1°C (34°F) and a maximum of 16°C (62°F), leading to a much lower average of 9°C (48°F). This month also experiences slightly higher precipitation at 59 mm (2.3 in) over approximately 12 days, along with increased humidity at 92%. For more specifics on November weather patterns, you can visit Southend-on-Sea weather in November.

September weather is generally milder, with temperatures ranging from a minimum of 8°C (46°F) to a maximum of 24°C (75°F) and an average of 16°C (61°F). The month typically sees about 57 mm (2.2 inches) of precipitation over around 10 days, accompanied by a humidity level of 80%. In contrast, December experiences significantly cooler temperatures, with a minimum of 0°C (32°F), an average of 7°C (45°F), and a maximum of 13°C (56°F). This month is also wetter, receiving approximately 107 mm (4.2 inches) of rain across about 15 days and a higher humidity level of 92%. For more detailed weather information, you can check Southend-on-Sea weather in December.

Compare Southend-on-Sea's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Southend-on-Sea

As September unfolds in Southend-on-Sea, it marks a transition from the warmth of summer to the crispness of autumn. With an average temperature hovering around a comfortable 16°C (61°F), days are still pleasantly warm, often reaching a maximum of 24°C (75°F), but the evenings bring a noticeable chill with minimums dropping to 8°C (46°F). This month also sees the arrival of occasional rain, averaging 57 mm (2.2 in) over about 10 days, contributing to the higher humidity levels at 80%. Unlike the intense heat and dry spells of the peak summer months, September offers a more balanced climate, perfect for outdoor activities without the sweltering temperatures. For a deeper understanding of the year's weather patterns, be sure to explore the Southend-on-Sea Climate.