September Weather in Littlehampton, United Kingdom

Last updated: March 17, 2025

In September, Littlehampton, United Kingdom, experiences a mild climate characterized by a maximum temperature of 23°C (73°F) and an average of 16°C (62°F), making it a comfortable time for outdoor activities. The minimum temperature dips to 10°C (50°F) during the night, providing a refreshing chill. However, this month also brings with it 61 mm (2.4 in) of precipitation over approximately 10 days, leading to an humidity level of 82% that contributes to the region's lush landscapes. Prepare for a blend of sunny days and occasional showers as the summer transitions to autumn, creating a picturesque setting for locals and visitors alike.

September Temperature in Littlehampton

As summer fades, September in Littlehampton brings a delightful transition into autumn, with temperatures marking a pleasant midpoint. The mild average of 16°C (62°F) offers a comfortable retreat, while daytime highs reach up to 23°C (73°F), reminiscent of late summer warmth. With nighttime lows settling at a snug 10°C (50°F), the month showcases a gradual decline from the sweltering highs of August. This shift not only makes for ideal outdoor explorations but also hints at the crisp bracing air soon to come. Overall, September balances the lingering summer vibes with the early whispers of autumn, inviting both residents and visitors to enjoy its charm.

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

The chart illustrates September temperature patterns in Littlehampton, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec454546495459646461575148
Data source: Temperature data for Littlehampton 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 Littlehampton

In September, Littlehampton experiences a moderate rainfall of 61 mm (2.4 in) over approximately 10 days, marking a transition from the wetter summer months. This precipitation level is slightly lower than that of the previous month, August, which recorded 77 mm (3.0 in). The shift reflects a gradual move towards the more substantial downpours expected in the upcoming autumn months, as October is known for its significantly higher average of 126 mm (5.0 in) across 15 days. This trend illustrates a seasonal pattern where September offers a brief respite before the intensity of fall rains takes hold.

September Precipitation Trends in Littlehampton

The chart displays monthly precipitation patterns in Littlehampton, 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.
JanFebMarAprMayJunJulAugSepOctNovDec717667294767547761126102131
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Littlehampton

As September arrives in Littlehampton, the air carries a notable humidity level of 82%, marking a slight increase from the more comfortable July and August months, which boasted lower humidity at 71% and 76%, respectively. This uptick suggests the transition into the autumn season, where moisture levels begin to rise again, reminiscent of the heavier humidities of winter. Overall, the pattern illustrates a gradual shift from the drier summer months to the more humid conditions typical of fall, creating a distinct atmosphere as residents prepare for cooler days ahead.

September Average Humidity in Littlehampton

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

As September rolls into Littlehampton, the UV Index remains a noteworthy 6, indicating a high level of sun exposure that merits attention. While the warm summer months of June and July peak with an intense UV Index of 8, the transition into autumn sees a slight decline, making September still noteworthy for outdoor activities. With a burn time of 25 minutes, it's essential to be mindful and protective, especially if you're spending prolonged periods outside. This month marks a shift from the high summer levels, paving the way for a more moderate October. For more detailed insights on UV exposure, visit the Littlehampton UV Index.

Maximum UV Index Levels in Littlehampton for September

The chart shows the monthly maximum UV Index (UVI) for Littlehampton 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.
JanFebMarAprMayJunJulAugSepOctNovDec224678876421
Data source: Littlehampton 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 Littlehampton

September in Littlehampton brings a delightful transition into autumn, with 324 hours of sunshine lighting up the month. After the peak summer months, which boasted over 400 hours of sun, September offers a warm embrace before the days begin to shorten. The sunshine gradually diminishes as the year progresses, with October following closely behind at 255 hours. This pattern highlights a vibrant summer, peaking in July and August, while gently tapering off into the cooler fall months. As September settles in, residents and visitors alike can savor those lingering sunny days, making it a perfect time to enjoy the coastline before winter's chill arrives.

Monthly Sunshine Duration in Littlehampton: September Highlighted

The September sunshine duration represents the total number of hours Littlehampton 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.
JanFebMarAprMayJunJulAugSepOctNovDec103h153h228h347h416h411h424h388h324h255h159h120h
Data source: Littlehampton September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Littlehampton During September

September in Littlehampton marks the transition from summer to autumn, and while the chance of sunny weather stands at 37%, it's a notable dip compared to the sunniest months of the year. This percentage mirrors the somewhat unpredictable nature of late summer, where the lingering warmth mingles with the impending chill of autumn. As we transition from July and August, both boasting around 43% and 37% chances of sunshine respectively, September continues to reflect the trend of increasing cloudiness as the days shorten. Though the likelihood of bright skies isn’t as high as in the peak summer months, a delightful afternoon sun is still a possibility, making early September an enticing time for outdoor activities before the cooler temperatures set in.

Percentage of Sunny Days in September in Littlehampton

The chart illustrates the percentage of sunny days in Littlehampton 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 Littlehampton experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec22%25%41%59%43%31%43%37%37%31%38%21%
Data source: Littlehampton September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Littlehampton in September

As summer fades into autumn, September in Littlehampton, United Kingdom, offers a gentle shift in daylight, with approximately 12 hours of sunlight. This month marks a noticeable retreat from the vibrant 16 hours experienced in June, yet still basks in more light than the colder months ahead. The gradual decrease from 15 hours in July and 14 hours in August highlights the transition toward shorter days. While the days may grow shorter, September’s moderate daylight provides ample opportunity to enjoy the lingering warmth and the beauty of early autumn, making it a delightful time to explore beaches and scenic walks.

Average Daylight Hours in Littlehampton for September

The chart illustrates the variation in daylight duration in Littlehampton throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 29m10h 1m11h 55m13h 51m15h 32m16h 24m15h 56m14h 26m12h 34m10h 38m8h 55m8h
Data source: Littlehampton daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Littlehampton

As September unfolds in Littlehampton, the coastal breeze begins to mellow, with average wind speeds dropping to 5.5 m/s (12 mph). This gentle decline from the summer gusts marks a transition toward the autumn months, contrasting with the more robust winds of January and February that reach up to 8.0 m/s (18 mph). Interestingly, September's winds nearly mirror those of July and August, reflecting a consistent lightness that invites leisurely seaside strolls. Moving into October, the winds pick up again, signaling the seasonal shift with an average of 7.4 m/s (17 mph). This pattern showcases a clear rhythm to the winds in Littlehampton, where summer's tranquility gradually gives way to the invigorating breezes of fall.

Average September Wind Speed in Littlehampton

The chart displays monthly wind speed patterns in Littlehampton, 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.
JanFebMarAprMayJunJulAugSepOctNovDec7.78.06.65.66.94.55.36.25.5 m/s7.46.57.6
Data source: Littlehampton September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Littlehampton Compares to Other Months

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

September's weather is generally milder and warmer compared to January, with average temperatures ranging from a minimum of 10°C (50°F) to a maximum of 23°C (73°F). In contrast, January sees cooler temperatures, with averages between 1°C (35°F) and 13°C (55°F). While September experiences less precipitation at 61 mm (2.4 in) over 10 days, January is slightly wetter with 71 mm (2.8 in) spread across 12 days. Additionally, humidity levels in January reach a higher 91%, compared to September's 82%, making the winter month feel even cooler. For more details on January conditions, visit Littlehampton weather in January.

September weather in Littlehampton is generally mild, with temperatures ranging from a minimum of 10°C (50°F) to a pleasant maximum of 23°C (73°F) and an average of 16°C (62°F). The month experiences around 61 mm (2.4 in) of precipitation spread over about 10 days, accompanied by a relatively high humidity of 82%. In contrast, February brings a much colder climate, with temperatures dipping to a minimum of -1°C (30°F) and peaking at just 12°C (54°F), averaging 7°C (45°F). This winter month sees slightly more rain, totaling 76 mm (3.0 in) over approximately 13 days, and a higher humidity level of 89%. For more details on the weather conditions in February, you can check Littlehampton weather in February.

In comparing the weather between September and March, September generally enjoys milder temperatures with an average of 16°C (62°F), while March is much cooler, averaging only 8°C (47°F). The minimum temperature in September is a comfortable 10°C (50°F), contrasting sharply with March's chilly minimum of -1°C (30°F). While September sees a moderate precipitation of 61 mm (2.4 in) over about 10 days, March has slightly higher precipitation at 67 mm (2.6 in) but over a longer stretch of 14 days. Additionally, humidity is quite high in both months, with September at 82% and March slightly higher at 86%. For those interested in more details, you can check out the Littlehampton weather in March for specific insights.

September generally offers more mild and comfortable weather compared to April. With average temperatures ranging from a minimum of 10°C (50°F) to a maximum of 23°C (73°F), it provides a pleasant late-summer climate. In contrast, April features cooler temperatures, with averages between 2°C (36°F) and 15°C (60°F), marking the transition into spring. Additionally, September sees higher precipitation levels at 61 mm (2.4 in) over approximately 10 days, while April has less rain, averaging 29 mm (1.2 in) across 6 days. Humidity levels are relatively similar, with September at 82% and April slightly higher at 85%. For a detailed look at April weather, you can check Littlehampton weather in April.

Comparing the weather in September and May reveals noticeable differences in temperature and precipitation. September enjoys a warmer climate, with average temperatures ranging from a minimum of 10°C (50°F) to a maximum of 23°C (73°F), while May has cooler averages, from a low of 6°C (42°F) to a high of 19°C (67°F). Additionally, September experiences slightly more rainfall, with 61 mm (2.4 in) over about 10 days, compared to May's 47 mm (1.9 in) over 9 days. Humidity levels are also comparable, with September at 82% and May at 79%. For a closer look at May weather specifically, you can visit Littlehampton weather in May.

When comparing the weather in September and June, both months exhibit mild temperatures, with September slightly warmer on average. In September, temperatures range from a minimum of 10°C (50°F) to a maximum of 23°C (73°F), averaging 16°C (62°F), while June has a similar minimum of 10°C (51°F) and averages 15°C (60°F) with a maximum of 21°C (70°F).

Moreover, September experiences a bit more precipitation at 61 mm (2.4 in) compared to June's 66 mm (2.6 in), albeit over a comparable number of rainy days: 10 in September versus 9 in June. Humidity levels are slightly higher in September at 82%, while June maintains a moderate 80%. For more detailed insights on June weather, check out Littlehampton weather in June.

In comparing the weather of September and July, both months experience similar maximum temperatures of around 23°C (73°F), but September tends to be cooler overall, with average and minimum temperatures dropping slightly to 16°C (62°F) and 10°C (50°F), respectively. July, on the other hand, has higher average and minimum temperatures of 18°C (64°F) and 13°C (56°F). Additionally, while both months see precipitation on about 10 days, September experiences a bit more rainfall, totaling 61 mm (2.4 in) compared to July's 54 mm (2.1 in). The humidity level is also higher in September at 82%, compared to 71% in July, contributing to a more humid feel as summer transitions into fall. For a more detailed look at weather specifics, you can visit Littlehampton weather in July.

In August, the weather is generally warmer, with average temperatures ranging from a minimum of 12°C (54°F) to a maximum of 24°C (75°F), compared to September’s cooler average of 10°C (50°F) to 23°C (73°F). While both months experience significant rainfall, August sees higher precipitation levels at 77 mm (3.0 in) over 13 days, whereas September has 61 mm (2.4 in) spread across 10 days. Additionally, humidity remains slightly higher in September at 82%, compared to 76% in August. For more detailed weather insights, check out Littlehampton weather in August.

In September, temperatures are relatively mild, with a minimum of 10°C (50°F) and an average of 16°C (62°F), peaking at 23°C (73°F). The month experiences around 61 mm (2.4 in) of precipitation over approximately 10 days, with humidity levels averaging 82%. In contrast, October sees a drop in temperatures, with a minimum of 6°C (43°F) and an average of 14°C (57°F), reaching a maximum of 20°C (68°F). However, the rainfall significantly increases to 126 mm (5.0 in) over about 15 days, and humidity rises to 90%. Such changes signify a transition towards cooler and wetter conditions as autumn progresses. For more details, you can check the Littlehampton weather in October.

September is generally milder than November, with average temperatures ranging from a minimum of 10°C (50°F) to a maximum of 23°C (73°F). In contrast, November sees cooler temperatures, with averages between 2°C (37°F) and 16°C (61°F). Additionally, September receives less precipitation, totaling 61 mm (2.4 in) over about 10 days, while November experiences increased rainfall of 102 mm (4.0 in) over approximately 15 days. The humidity also rises in November, reaching 92%, compared to September's 82%. For more detailed information about November weather, you can visit Littlehampton weather in November.

In September, the weather is generally mild, with temperatures ranging from a minimum of 10°C (50°F) to a maximum of 23°C (73°F) and an average of 16°C (62°F). The month sees about 61 mm (2.4 in) of precipitation over approximately 10 days, coupled with a humidity level of 82%. In contrast, December brings a much cooler climate, with temperatures dropping to a minimum of 2°C (35°F) and peaking at 13°C (56°F), averaging around 9°C (48°F). The rainfall significantly increases to 131 mm (5.1 in) over 17 days, and humidity rises to 92%. For more detailed insights, check out Littlehampton weather in December.

Compare Littlehampton's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Littlehampton

As the warmth of summer begins to wane, September in Littlehampton offers a delightful transition into autumn. With temperatures averaging around 16°C, the month strikes a balance between mild days and cool nights, providing a refreshing change from the heat of previous months. While precipitation becomes more frequent, with about 10 wet days, the overall humidity remains noticeable, lending a crispness to the air that is particularly inviting. This blend of weather patterns makes September a unique time to experience the charm of Littlehampton. For detailed insights on how September fits into the year's weather narrative, explore the Littlehampton Climate.