Last updated: March 17, 2025
In September, Brighton, United Kingdom, showcases a delightful blend of late summer warmth and early autumn charm. The maximum temperatures reach a pleasant 26°C (79°F), while the average hovers around 13°C (55°F), offering a comfortable climate for outdoor activities. However, visitors should be prepared for some unpredictability, as 74 mm (2.9 in) of rain falls over approximately 14 days, contributing to the region's lush scenery. With an average humidity level of 88%, the air carries a refreshing quality that enhances the seaside experience. Overall, September in Brighton promises a captivating mix of sun and occasional showers, ideal for exploring its vibrant culture and picturesque landscapes.
As September rolls into Brighton, the transition from summer to autumn is palpable, marked by cooler temperatures and a hint of crispness in the air. With minimums dipping to 0°C (32°F) and averages around 13°C (55°F), this month witnesses a gradual decline from the warmth of summer, yet still offers pleasant highs reaching 26°C (79°F). This blend of cooler nights and mild days creates an inviting atmosphere for strolls along the iconic Brighton seafront, where the vibrant summer energy begins to mellow. As the month progresses, one can expect a striking contrast to the sizzling highs of August, nurturing a cozy charm that encapsulates the essence of early autumn in this bustling coastal city.
September in Brighton, United Kingdom, offers a glimpse into the shifting seasons with an average precipitation of 74 mm (2.9 in) over approximately 14 days of rain. This amount marks a moderate transition from the heavy downpours of August, which saw 106 mm (4.2 in). As summer fades, September's rainfall remains relatively consistent with the preceding months, indicating a gradual increase in precipitation compared to the drier spring months like April, which recorded just 40 mm (1.6 in). With autumn approaching, the weather becomes less predictable, hinting at the wetter months ahead, such as October, which typically sees even higher averages at 107 mm (4.2 in). This pattern underscores Brighton's characteristic maritime climate, where rain is a frequent companion as the seasons change.
In September, humidity levels in Brighton, United Kingdom, rise to 88%, marking a notable peak as summer transitions into autumn. This month sees a brief spike after the relatively stable levels of 82% observed throughout July and August. Interestingly, September's humidity reaches a height reminiscent of the winter months, with October's levels climbing to 90% and November peaking even further at 92%. This upward trend signals a gradual return to the enveloping moisture characteristic of Brighton's coastal climate, bridging the warm, dry summer days to the damp, chilly time ahead. As the seasons change, residents and visitors alike may find the air becoming increasingly heavy, setting the stage for the wetter months to follow.
As September arrives in Brightons, United Kingdom, the UV Index settles at a moderate level of 5, signaling the transition from the summer sun. This indicates a slight dip from the high levels experienced in July and August, where the index peaked at 7 and 6, respectively. With a burn time of 30 minutes, it's essential to remain cautious during midday hours, even though the exposure risk is lower compared to the summer months. Overall, this month represents a graceful shift toward milder sunlight, encouraging outdoor activities while still advocating sun safety awareness. For more detailed insights, check out the Brightons UV Index.
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As the summer days begin to wane, September in Brighton still basks in a considerable amount of sunshine, boasting around 264 hours of sun. This month slides in comfortably after a vibrant August, which experiences 331 hours of radiant daylight, yet holds onto a significant portion of the summer's warmth. April to August showcases a stunning upward trend, with the sunniest months peaking in July at 366 hours. However, as autumn approaches, a transition becomes apparent; September marks a noticeable decline leading into October’s 184 hours. Despite this reduction, September remains a sweet spot, offering a blend of lingering summer brightness while hinting at the crispness to come. The gradual shift in sunshine hours reflects not just a seasonal change but also invites locals and visitors alike to savor the last glimpses of summer in this charming coastal city.
In Brighton, United Kingdom, the likelihood of sunny weather tends to fluctuate throughout the year, but September is notably less promising for sun seekers, with only a 17% chance of sunshine. As summer fades, this month marks a downward trend in sunny days, following a slightly more favorable 43% in April and hovering around 20-26% during the peak summer months. This gradual decline continues into October, which records an 18% chance of sun. As such, while early autumn in Brighton can still offer pleasant days, it’s wise to temper expectations for consistent sunshine in September.
As summer transitions into autumn, September in Brighton, United Kingdom, offers a delightful shift in daylight duration. With an average of 12 hours of sunlight, this month marks a noticeable reduction from the sun-soaked 17 hours experienced in June. The gradual tapering of daylight begins in August and continues into October, showcasing the natural rhythm of the seasons. Despite this decline, the warmth of early autumn still provides ample time for outdoor activities, making September a perfect blend of summer’s lingering brightness and the cool embrace of fall. As the days grow shorter, the vibrant hues of changing leaves remind us to savor every precious moment of daylight.
As September unfolds in Brighton, the average wind speed settles at 3.1 m/s (7 mph), reflecting a gentle yet noticeable breeze that complements the transition from summer to autumn. This month stands out with a slight increase compared to the previous summer months, such as July and August, which experienced milder winds of 2.3 m/s (5 mph) and 2.5 m/s (6 mph) respectively. The change signifies a gradual winding up of the coastal winds as the seasons shift, hinting at the brisker conditions that lie ahead in October and November, where averages rise to 4.1 m/s (9 mph) and 4.3 m/s (10 mph). September's winds invite locals and visitors alike to enjoy outdoor activities while the air retains a warm hint of summer, making it an ideal time to experience Brighton's vibrant seaside charm.
The weather in Brightons 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 Brightons and find detailed weather information for every month.
September and January offer distinctly different weather experiences. In September, temperatures range from a minimum of 0°C (32°F) to a pleasant average of 13°C (55°F), peaking at 26°C (79°F). This month also sees considerable precipitation, with 74 mm (2.9 in) falling over 14 days and humidity levels averaging 88%. In contrast, January is much colder, with temperatures dipping to a minimum of -6°C (21°F) and averaging around 4°C (40°F), while the maximum reaches only 13°C (57°F). Precipitation is slightly lower at 67 mm (2.7 in) over 11 days, but humidity remains high at 90%. For more details on January weather, you can visit Brightons weather in January.
September and February present markedly different weather patterns. In September, temperatures range from a chilly 0°C (32°F) to a pleasant 26°C (79°F), with an average of 13°C (55°F). This month experiences about 74 mm (2.9 in) of precipitation over 14 days, while maintaining a high humidity level of 88%. In contrast, February is much colder, with temperatures dropping to a minimum of -11°C (13°F) and peaking at 14°C (58°F), averaging around 5°C (41°F). This month typically sees higher precipitation at 108 mm (4.2 in) across 16 days, still accompanied by the same 88% humidity. For a detailed look at February weather, you can visit Brightons weather in February.
September and March present contrasting weather conditions, with each month exhibiting its own unique characteristics. In September, temperatures range from a chilly 0°C (32°F) at night to a warm 26°C (79°F) during the day, averaging around 13°C (55°F). This month experiences 74 mm (2.9 in) of precipitation over 14 days, coupled with high humidity at 88%. In contrast, March sees cooler temperatures, with a minimum of -5°C (24°F) and a maximum of 17°C (63°F), averaging only 6°C (43°F). It also has a slightly higher prevalence of rain, totaling 92 mm (3.6 in) spread over 16 days, while maintaining a comfortably high humidity of 86%. For more detailed weather insights, check out Brightons weather in March.
September and April present distinct weather patterns that highlight the transition between seasons. In September, temperatures range from a minimum of 0°C (32°F) to a comfortable maximum of 26°C (79°F), with an average of 13°C (55°F). This month experiences about 74 mm (2.9 in) of precipitation spread over 14 days, accompanied by relatively high humidity at 88%. In contrast, April has cooler conditions, with a minimum temperature of -4°C (25°F) and a maximum of 22°C (72°F), averaging around 8°C (46°F). It sees lower precipitation levels at 40 mm (1.6 in) over 10 days, with slightly less humidity at 85%. For more details on the climatic nuances of April, you can check Brightons weather in April.
In comparing the weather in September and May, we see some notable differences despite their similar maximum temperatures, both reaching around 26°C (79°F). September has a milder average of 13°C (55°F) compared to May's slightly cooler average of 11°C (52°F). Additionally, September experiences higher humidity at 88%, while May has a lower humidity level of 80%. Precipitation levels are also a bit higher in September, with 74 mm (2.9 in) over 14 days, compared to May's 64 mm (2.5 in) over 13 days. For more detailed insights into May's weather, you can check Brightons weather in May.
September and June exhibit notable differences in weather patterns. In June, temperatures typically range from a minimum of 5°C (42°F) to a maximum of 29°C (84°F), with an average of 14°C (57°F), while September offers a cooler range with minimums of 0°C (32°F) and maximums of 26°C (79°F), averaging 13°C (55°F). Both months experience significant precipitation, with June receiving 89 mm (3.5 in) over 13 days compared to September's 74 mm (2.9 in) spread across 14 days. Additionally, September tends to be slightly more humid at 88%, compared to June's 83%. For a deeper look into the weather specifics for June, check out Brightons weather in June.
When comparing the weather between September and July, one can observe several notable differences. September typically experiences a wider temperature range, with minimums dipping to 0°C (32°F) and maximums reaching 26°C (79°F), resulting in an average of 13°C (55°F). In contrast, July boasts milder temperatures, with minimums of 6°C (44°F) and maximums of 29°C (84°F), averaging 15°C (60°F). Precipitation levels are similar, with September recording 74 mm (2.9 in) over 14 days and July slightly higher at 82 mm (3.2 in) across 15 days. Additionally, September's humidity is slightly higher at 88% compared to July's 82%. For a detailed look at July weather, visit Brightons weather in July.
In comparing the weather of September to that of August, September experiences a notable drop in minimum temperatures, averaging 0°C (32°F) compared to August's 7°C (44°F). Both months share similar maximum temperatures, reaching up to 26°C (79°F); however, September's average temperature is slightly cooler at 13°C (55°F) versus August's 15°C (59°F). Additionally, September has less precipitation, totaling 74 mm (2.9 in) over 14 days, while August receives a higher amount of 106 mm (4.2 in) across 16 days. Interestingly, September's higher humidity level of 88% adds to the overall dampness, even though both months maintain humidity levels above 80%. For more detailed information about August weather, you can visit Brightons weather in August.
September and October weather displays a notable transition as autumn takes hold. In September, temperatures range from a brisk 0°C (32°F) at their lowest to a comfortable 26°C (79°F) at their peak, with an average of 13°C (55°F). The month sees a total precipitation of 74 mm (2.9 in) spread over 14 days, accompanied by a humidity level of 88%. In contrast, October brings cooler conditions, with minimum temperatures dropping to -2°C (29°F) and maximums reaching just 20°C (68°F), yielding an average of 10°C (50°F). Notably, October sees an increase in precipitation to 107 mm (4.2 in) across 17 days, with humidity slightly higher at 90%. For more detailed information on October weather, you can check Brightons weather in October.
September generally offers milder weather than November, with temperatures ranging from a chilly 0°C (32°F) at night to a pleasant maximum of 26°C (79°F) during the day, averaging around 13°C (55°F). In contrast, November sees colder temperatures, with nighttime lows dipping to -4°C (25°F) and daytime highs reaching only 14°C (58°F), yielding a cooler average of 7°C (44°F). Additionally, both months experience considerable precipitation, but November has slightly more, with 83 mm (3.3 in) over 15 days compared to September's 74 mm (2.9 in) over 14 days. The humidity is also higher in November at 92%, compared to 88% in September. For a more detailed look at weather patterns during this time, visit Brightons weather in November.
September and December present a stark contrast in weather conditions. In September, temperatures range from a minimum of 0°C (32°F) to a maximum of 26°C (79°F), with an average of 13°C (55°F). The month experiences 74 mm (2.9 in) of precipitation over 14 days and a relatively high humidity of 88%. In contrast, December sees much cooler temperatures, with lows plummeting to -6°C (22°F) and a maximum of only 13°C (55°F), yielding an average temperature of 5°C (41°F). Precipitation increases slightly to 93 mm (3.7 in) over 16 days, accompanied by a similar humidity level of 89%. For more details, you can check Brightons weather in December.
As September rolls in, Brighton's weather showcases a unique charm that sets it apart from the summer months. With maximum temperatures reaching a pleasant 26°C, the transition into autumn is marked by a cooler average of 13°C and occasional chills, dipping to a brisk 0°C. The increased precipitation, with 14 rainy days contributing to 74 mm, combines with elevated humidity levels of 88%, creating a refreshing yet damp atmosphere. This shift beckons both locals and visitors to enjoy brisk walks along the coastline while embracing the vibrant hues of early fall. To learn more about how Brighton's weather compares throughout the year, explore Brightons Climate.