Last updated: March 17, 2025
In September, Croydon experiences a delightful blend of mild temperatures and occasional rain, making it a transitional month as summer fades into autumn. The maximum temperature peaks at 28°C (83°F), while the average hovers around a comfortable 15°C (60°F). However, visitors should be prepared for cooler nights, where temperatures can drop to a brisk 4°C (40°F). The area witnesses about 45 mm (1.8 in) of precipitation over roughly 9 days, contributing to a humidity level of 80% that adds a refreshing crispness to the air. This mix of weather conditions creates an appealing backdrop for outdoor activities and scenic explorations in the heart of Croydon.
In September, Croydon experiences a delightful transition as summer gracefully gives way to autumn. The temperatures begin to cool, with minimums around 4°C (40°F) and pleasant averages hovering at 15°C (60°F). However, the warmth still lingers, reaching a comfortable maximum of 28°C (83°F) during the day, allowing residents to enjoy the lingering sunshine. This month showcases a noticeable trend: as the year progresses, Croydon's temperatures steadily decline from the summer's peak, making September a sweet spot for those who cherish brisk yet mild weather before the chill of fall sets in. It's a perfect time for outdoor activities and to relish the last rays of summer.
September in Croydon sees a moderate dip in precipitation, with 45 mm (1.8 in) of rain falling over 9 days. This marks a noticeable decrease compared to the wetter months of June and October. As summer wanes, the weather shifts towards a drier pattern, yet the rain still contributes to the lush greenery typical of the region. With average precipitation levels now trailing behind the heavier summer months, September serves as a transitional period, hinting at the wetter days to come in autumn while still allowing for plenty of milder, drier spells. This balance between rain and sunshine creates an inviting atmosphere for both residents and visitors alike, making it a charming time to experience Croydon's beauty.
In Croydon, September marks a notable transition in humidity levels, with the percentage rising to 80% after the drier summer months. This increase from August’s low of 73% signals the onset of autumn, as the air becomes more saturated once again. Notably, the humidity begins to climb towards the year’s wetter months, peaking in November and December at a high of 92%. This trend highlights the seasonal shift in Croydon’s climate, where the summer's dry spell gives way to an atmosphere rich with moisture, preparing the landscape for the fall and winter seasons ahead.
As summer transitions into autumn, September in Croydon sees a UV Index of 6, categorized as high, which means sun protection is still important as outdoor activities peak in this lively month. Compared to the earlier months of the year, where indices ranged from low to moderate, September retains the high exposure risk characteristic of late summer. The burn time is approximately 25 minutes, prompting awareness around sun safety even as temperatures begin to cool. This reflects a gradual decline from the peak summer months of June and July, which boasted the highest values of 8, but still encourages residents and visitors to enjoy the outdoors while being mindful of UV exposure. To explore further insights on UV levels, visit Croydon UV Index.
UV Risk Categories
As September arrives in Croydon, the city bids farewell to summer with a dazzling 300 hours of sunshine, marking a notable transition into autumn. This vibrant month showcases a remarkable retention of warmth, maintaining a significant portion of the sunny days experienced during the peak summer months of July and August. Although daylight begins to wane, with hours dropping from a seasonal high, September still boasts a brighter atmosphere compared to the winter months that follow, providing residents a final chance to bask in the sun before the chill takes hold. The steady progression from May’s peak of 398 hours down to September’s bounty illustrates the dramatic seasonal shift while reminding us to seize the fleeting sunshine before autumn settles in for good.
In Croydon, the likelihood of sunny weather in September aligns closely with the summer's transition into autumn, boasting a 29% chance of sunshine. This percentage mirrors the tendencies seen in the preceding months of June and August, suggesting a gradual decline from the brighter days of summer. Interestingly, while April enjoys the highest likelihood of sun at 49%, September's stats indicate a sharp contrast, with notably lower chances resembling those of October and February. Thus, while September can still offer pleasant sunny spells, it’s wise to anticipate a mix of weather as the year begins its shift towards cooler, cloudier conditions.
As summer wanes in September, Croydon experiences a gentle decline in daylight, with about 12 hours of sun gracing its residents. This month marks a transitional phase, where the long, sun-drenched days of July and August, boasting up to 16 hours of daylight, begin to taper off. The gradual shift in daylight duration reflects the turning of the seasons, as nature prepares for the crispness of autumn. Following September, daylight continues to decrease, dropping to 10 hours in October, before plunging to its winter nadir of 7 hours in December. This rhythmic ebb and flow not only influences the local climate but also evokes a sense of change, inviting Croydon’s community to embrace the seasonal shifts.
As September arrives in Croydon, the wind begins to whisper change, settling into a gentle rhythm with an average speed of 3.2 m/s (7 mph). This marks a notable dip compared to the breeziness of the earlier months, particularly the peak of summer when July and August enjoyed slightly stronger gusts. The transition from the lively averages of 4.2 m/s (9 mph) in May to the more subdued speed in September suggests a calming shift, inviting longer strolls in the crisp air. As autumn approaches, one can almost feel nature gearing up for the dramatic transformations ahead, with expectations of brisker winds returning in October. Thus, September serves as a serene bridge, balancing the warmth of summer with the upcoming chill of fall.
The weather in Croydon 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 Croydon and find detailed weather information for every month.
September and January present contrasting weather patterns. In September, temperatures range from a cool 4°C (40°F) at night to a warm 28°C (83°F) during the day, with an average of 15°C (60°F). The month sees a moderate level of precipitation at 45 mm (1.8 in) over about 9 days and a relative humidity of 80%. In stark contrast, January experiences much colder temperatures, with a minimum of -5°C (24°F) and a maximum of only 14°C (58°F), averaging just 5°C (41°F). There is slightly more precipitation in January at 54 mm (2.1 in), also spread over 9 days, but the humidity increases to 91%. For a more detailed look at January conditions, you can visit Croydon weather in January.
September and February present contrasting weather conditions in terms of temperature and humidity. In September, temperatures typically range from a minimum of 4°C (40°F) to a maximum of 28°C (83°F), with an average of 15°C (60°F) and relatively lower humidity at 80%. In contrast, February sees a chillier climate, with minimum temperatures dropping to -7°C (21°F) and a maximum of 18°C (65°F), leading to a much cooler average of 6°C (43°F). Additionally, February experiences higher humidity at 89% and slightly more precipitation, totaling 52 mm (2.0 in) over 11 days compared to September's 45 mm (1.8 in) over 9 days. For more details on the weather in February, you can visit Croydon weather in February.
September and March present distinct weather patterns, reflecting the transition between summer and winter. In September, temperatures range from a chilly minimum of 4°C (40°F) to a warm maximum of 28°C (83°F), with an average of 15°C (60°F). While precipitation is moderate at 45 mm (1.8 in) over about 9 days, humidity is relatively high at 80%. In contrast, March experiences cooler temperatures, with a minimum of -5°C (23°F) and a maximum of 22°C (72°F), averaging around 8°C (46°F). It also sees slightly higher rainfall, totaling 52 mm (2.1 in) across approximately 13 days, alongside an increase in humidity to 86%. For a more detailed look at March weather, you can visit Croydon weather in March.
When comparing the weather in September and April, notable differences emerge. September tends to be milder, with average temperatures ranging from a minimum of 4°C (40°F) to a maximum of 28°C (83°F), making it generally warmer than April, where temperatures fluctuate between -2°C (29°F) and 26°C (80°F). September also experiences slightly more precipitation, with 45 mm (1.8 in) over about 9 days, compared to April's 32 mm (1.3 in) over 7 days. Humidity levels are relatively high in both months, with September at 80% and April slightly higher at 85%. For more detailed insights, you can check Croydon weather in April.
When comparing the weather in September and May, we see notable differences in temperature and precipitation patterns. September tends to be warmer, with temperatures ranging from a minimum of 4°C (40°F) to a maximum of 28°C (83°F), averaging around 15°C (60°F). In contrast, May has a cooler temperature range, with a minimum of 1°C (34°F) and a maximum of 25°C (78°F), averaging 13°C (55°F). Additionally, while September experiences less precipitation at 45 mm (1.8 in) over 9 days, May is wetter with 63 mm (2.5 in) over 10 days. The humidity levels are quite similar, with September at 80% and May just slightly higher at 82%. For a more detailed look at May's weather, you can visit Croydon weather in May.
When comparing the weather in September and June, several key differences emerge. September typically sees a wider temperature range with minimums around 4°C (40°F) and maximums reaching up to 28°C (83°F), resulting in an average of 15°C (60°F). In contrast, June has slightly warmer conditions, with minimum temperatures of 7°C (45°F) and maximums climbing to 32°C (89°F), averaging 17°C (62°F). Precipitation levels are also notable; September experiences 45 mm (1.8 in) of rain over about 9 days, while June is wetter, with 77 mm (3.0 in) of rain over 8 days. Both months maintain similar humidity levels, around 80-81%. For further details, you can check out Croydon weather in June.
When comparing the weather in September and July, we see distinct differences in temperature and precipitation. September experiences a wider temperature range, with a minimum of 4°C (40°F), an average of 15°C (60°F), and a maximum of 28°C (83°F). In contrast, July is consistently warmer, with a minimum of 9°C (49°F), an average of 18°C (65°F), and peaks reaching up to 36°C (97°F). Additionally, September sees less precipitation at 45 mm (1.8 in) over 9 days, while July receives 64 mm (2.5 in) spread over 11 days. Humidity remains relatively high in both months, but it's slightly higher in September at 80% compared to July's 76%. For a detailed look at the weather patterns in July, you can visit Croydon weather in July.
In comparing the weather of September to that of August, it's evident that September experiences a slight drop in temperatures, with minimums of 4°C (40°F) compared to August's 8°C (47°F) and an average temperature of 15°C (60°F) versus August's 18°C (64°F). Maximum temperatures also reflect this decline, reaching only 28°C (83°F) in September, significantly lower than August's peak of 34°C (94°F). Additionally, September tends to be wetter, with 45 mm (1.8 in) of precipitation over 9 days, while August has a higher precipitation level of 72 mm (2.8 in) over 12 days, albeit with less humidity at 73% compared to September's 80%. For a more detailed look at the weather patterns in August, you can check Croydon weather in August.
September and October present a notable transition in weather patterns. In September, temperatures range from a minimum of 4°C (40°F) to a maximum of 28°C (83°F), with an average of 15°C (60°F). The month experiences lighter rainfall, totaling 45 mm (1.8 in) over about 9 days, and has a humidity level of 80%. In contrast, October sees a drop in temperatures, where the minimum falls to 1°C (34°F) and the maximum reaches 23°C (73°F), with an average of 12°C (54°F). This month experiences increased rainfall of 81 mm (3.2 in) spread over 12 days, and humidity rises to 89%. For more detailed information on October's weather, you can check Croydon weather in October.
September and November showcase a significant shift in weather patterns. September boasts a milder climate with temperatures ranging from a minimum of 4°C (40°F) to a comfortable maximum of 28°C (83°F), averaging around 15°C (60°F). The month experiences about 45 mm (1.8 in) of precipitation over roughly 9 days, accompanied by a humidity level of 80%. In contrast, November ushers in colder temperatures, with a minimum of -2°C (28°F) and maxing out at 17°C (62°F), averaging only 8°C (47°F). Precipitation increases slightly to 48 mm (1.9 in) across 10 days, and humidity rises to 92%. For a detailed look at what to expect, check out Croydon weather in November.
September and December present distinctly different weather patterns. In September, temperatures range from a minimum of 4°C (40°F) to a comfortable average of 15°C (60°F), peaking at 28°C (83°F) on warmer days. The month sees about 45 mm (1.8 in) of precipitation over approximately 9 days, with humidity levels around 80%. In contrast, December brings colder temperatures, with a minimum of -4°C (25°F) and an average of just 6°C (44°F), maxing out at 14°C (58°F). Precipitation increases significantly to 84 mm (3.3 in) over 14 days, and humidity rises to a higher 92%. For a closer look at December conditions, check out Croydon weather in December.
As September unfolds in Croydon, it marks a distinct transition from the warmth of summer to the coolness of autumn. While temperatures reach a pleasant maximum of 28°C during the day, they dip to a cooler 4°C at night, creating a refreshing contrast. This month also experiences higher humidity levels, averaging around 80%, which adds a slight heaviness to the air compared to the drier summer months. With 45 mm of rain falling over approximately nine days, September is notable for its increased precipitation, making it a month where occasional showers can interrupt the early autumn sunshine. For a deeper look into the shifting weather patterns in Croydon, be sure to visit Croydon Climate.