Last updated: March 17, 2025
In September, Cowes experiences a delightful mix of warm and mild weather, making it a charming time to visit. The maximum temperature can reach up to 27°C (81°F), while the average hovers around a comfortable 16°C (61°F). On cooler days, temperatures may dip to a low of 6°C (44°F). Visitors can expect 48 mm (1.9 in) of rainfall spread over about 9 days, contributing to the area's lush scenery. With an average humidity level of 82%, the air carries a refreshing maritime quality, perfect for enjoying the coastal beauty and vibrant events this time of year offers.
As September rolls in, Cowes, United Kingdom, experiences a delightful transition in temperatures, signaling the arrival of autumn. With a minimum of 6°C (44°F) and an average temperature settling at 16°C (61°F), the month offers a pleasant reprieve from the summer heat. Daytime highs can reach a comfortable 27°C (81°F), providing ample opportunities for outdoor activities amidst the stunning coastal scenery. This trend showcases a gradual cooling from the summer months, yet still allows for warm days that invite locals and tourists alike to enjoy the lingering warmth before autumn truly sets in. September in Cowes is, therefore, a blend of comfortable warmth and the crispness of early fall, making it an enchanting time to visit.
September in Cowes, United Kingdom, sees a moderate dip in precipitation, accumulating 48 mm (or 1.9 in) over the month, which translates to about 9 rainy days. This reflects a trend of slightly decreasing rainfall following the wetter summer months, such as August with 63 mm. As summer transitions into autumn, the weather begins to balance, with precipitation totals settling into more manageable numbers, paving the way for the typically much wetter October. Overall, September offers a manageable blend of sun and occasional showers, making it a pleasant time to experience Cowes before the heavier rains arrive.
In Cowes, United Kingdom, September brings a noticeable shift in humidity, averaging around 82%. While this marks a slight increase from the drier summer months of July and August, when humidity levels dipped to 71% and 76% respectively, it remains comfortably lower than the peak levels seen in the winter. As autumn approaches, humidity begins to creep back up, foreshadowing the wetter months ahead. The trend illustrates a seasonal ebb and flow, with early months like January and February hovering at high levels of 91% and 89%, creating a stark contrast to the summer’s more refreshing air. This gradual transition emphasizes Cowes' characteristic maritime climate, where the air often feels damp as the year rolls forward.
As summer begins to fade, September in Cowes, United Kingdom presents a notable drop in UV intensity compared to the peak summer months. The UV Index settles at 6, placing it back in the high exposure category, with a burn time of approximately 25 minutes for fair-skinned individuals. This decline follows the very high levels seen in June and July, where protection became essential in just 15 minutes of sun exposure. Interestingly, while September is less intense than its predecessors, it still calls for caution, as outdoor activities remain appealing. Be sure to stay informed about UV levels, especially during this transitional month, by checking the Cowes UV Index.
UV Risk Categories
September in Cowes, United Kingdom, is marked by a delightful swell of sunshine, with the month offering approximately 320 hours of bright, sunny days. This is a noticeable shift from the summer peak in July, which boasts the highest hours at 423 hours, yet it still retains a generous amount of sunlight compared to earlier months like January and February. As the summer months draw to a close, September serves as a gentle transition into autumn, ensuring plenty of opportunities for outdoor activities and beach strolls before the sunlight diminishes significantly in October and November. Each hour of sunshine counts as Cowes prepares for the cooler months, with September's warmth acting as the last hurrah of summer bliss.
In Cowes, United Kingdom, September offers a moderately sunny outlook, with a 35% chance of sunshine. This marks a slight dip from the sunnier spring months, particularly April, which enjoys a peak of 57%. The warm summer months of July and August provide better odds at 40% and 31%, respectively, suggesting that as the seasons transition into autumn, chances for clear skies begin to wane. Despite this reduction, September still holds onto a more favorable likelihood than the chillier months ahead, with October's forecast falling to 29%. Thus, while the golden days of summer may be fading, September remains a pleasant contender for those seeking a touch of sun before the winter gloom sets in.
As summer fades into autumn, September in Cowes, United Kingdom, witnesses a gentle transition in daylight hours, with approximately 12 hours of sunshine illuminating the day. Following the peak of 16 hours in June, daylight gradually diminishes, yet September still enjoys a generous amount of light compared to the darker months ahead. This month serves as a bridge, showcasing a comfortable decline in sunlight as the vibrant hues of autumn begin to emerge. While daylight decreases to 10 hours in October, the lingering warmth of September invites residents and visitors alike to enjoy outdoor activities under beautiful skies.
As September unfolds in Cowes, the wind begins to settle into a gentle rhythm, with an average speed of 4.2 m/s (9 mph). This slight decline from the peak summer winds reveals a gradual transition toward autumn. Typically, September tends to be one of the calmer months, echoing the trend established in June and July, where winds dipped below the overall average year-round. However, the breeze remains refreshing, offering a delightful reprieve from the summer heat and setting the tone for the crisp days ahead. As we head into October, when winds tend to pick up again, September serves as a cozy prelude to the lively gusts that will soon sweep through the coastline.
The weather in Cowes 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 Cowes and find detailed weather information for every month.
In September, the weather is generally mild and pleasant, with temperatures ranging from a minimum of 6°C (44°F) to a maximum of 27°C (81°F), and an average of 16°C (61°F). This month experiences about 48 mm (1.9 in) of precipitation spread over 9 days, accompanied by a humidity level of 82%. In contrast, January brings much colder conditions, with temperatures dipping to a minimum of -1°C (30°F) and reaching a maximum of 14°C (57°F), averaging around 6°C (44°F). Rainfall slightly increases to 54 mm (2.1 in) over the same number of rainy days, but humidity rises to 91%. For more details on January weather, you can refer to Cowes weather in January.
September and February present contrasting weather patterns. In September, temperatures range from a mild 6°C (44°F) at night to a warm 27°C (81°F) during the day, with an average of 16°C (61°F). The month experiences 48 mm (1.9 in) of precipitation over about 9 days, with humidity averaging 82%. Conversely, February features much colder temperatures, with a minimum of -6°C (22°F) and a maximum of 15°C (60°F), yielding an average temperature of 7°C (45°F). Precipitation rises to 60 mm (2.4 in) across 11 days, and humidity is slightly higher at 89%. For more specifics on February weather, you can check this link: Cowes weather in February.
When comparing the weather in September and March, notable differences emerge in temperature and precipitation patterns. September typically enjoys milder conditions, with average temperatures ranging from 6°C (44°F) to a maximum of 27°C (81°F). In contrast, March experiences much cooler temperatures, with minimums dropping to -4°C (25°F) and maximums reaching only 18°C (64°F). Additionally, March tends to have higher precipitation levels, with 60 mm (2.4 in) falling over 13 days, compared to September's 48 mm (1.9 in) over 9 days. Humidity is also slightly higher in March at 86%, compared to 82% in September. For more details on March weather, you can check Cowes weather in March.
When comparing the weather in September and April, significant differences can be observed. September boasts a wider temperature range with a minimum of 6°C (44°F) and an average of 16°C (61°F), peaking at 27°C (81°F). In contrast, April features cooler temperatures, starting at a minimum of 0°C (32°F) and averaging only 10°C (50°F), with a maximum of 23°C (74°F). Precipitation is slightly higher in September at 48 mm (1.9 in) over 9 days, compared to April's 33 mm (1.3 in) over 8 days. Interestingly, humidity levels are relatively close, with September at 82% and April slightly higher at 85%. For more detailed weather insight, you can check Cowes weather in April.
September and May exhibit distinct weather patterns. In September, temperatures range from a minimum of 6°C (44°F) to a maximum of 27°C (81°F), with an average temperature of 16°C (61°F) and 48 mm of precipitation over about 9 days. The humidity is notably high at 82%. In contrast, May presents cooler temperatures, with a minimum of 3°C (37°F) and a maximum of 25°C (77°F), averaging 13°C (56°F). While May is slightly wetter, receiving 61 mm of precipitation across 11 days and a humidity level of 79%, it is generally milder than September. For a deeper understanding of May weather in Cowes, check out Cowes weather in May.
When comparing the weather between September and June, we observe some notable differences. In September, temperatures range from a minimum of 6°C (44°F) to a maximum of 27°C (81°F), with an average of 16°C (61°F). This month typically experiences 48 mm (1.9 in) of precipitation over nine days and has a humidity level of 82%. In contrast, June tends to be slightly warmer, with a temperature range from a minimum of 9°C (48°F) to a maximum of 30°C (87°F), while maintaining an average temperature of 16°C (62°F). Precipitation in June is higher at 74 mm (2.9 in) across the same nine days but features a slightly lower humidity of 80%. For more details, you can check Cowes weather in June.
September and July exhibit distinct differences in weather patterns. In July, temperatures range from a minimum of 10°C (50°F) to a maximum of 29°C (85°F), with an average temperature of 19°C (66°F). This month also sees higher humidity levels at 71% and slightly more precipitation, totaling 51 mm (2.0 in) over 11 days. In contrast, September's temperatures are cooler, with a minimum of 6°C (44°F) and a maximum of 27°C (81°F), averaging 16°C (61°F). Although September receives less precipitation at 48 mm (1.9 in) over 9 days, it features a higher humidity of 82%. For more detailed information about July weather, you can check: Cowes weather in July.
In comparison to August, September brings slightly cooler temperatures, with minimums dipping to 6°C (44°F) and a comfortable average of 16°C (61°F). August maintains higher warmth, featuring minimums of 9°C (49°F) and an average of 18°C (64°F), peaking at a maximum of 30°C (87°F). Rainfall is also more frequent in August, with 63 mm (2.5 in) over 11 days, while September sees a total of 48 mm (1.9 in) spread across 9 days. Humidity levels are higher in September at 82%, compared to 76% in August. For more details on the August climate, you can check Cowes weather in August.
In September, temperatures are relatively mild, with a minimum of 6°C (44°F) and an average high of 27°C (81°F), making the month feel warm and pleasant. However, as October arrives, temperatures drop significantly, starting at a minimum of 2°C (37°F) and averaging only 13°C (56°F). Additionally, October is marked by increased precipitation, receiving 98 mm (3.9 in) over 15 days compared to September's 48 mm (1.9 in) over 9 days. Humidity also rises in October, reaching 90%, higher than September's 82%. For more detailed insights, you can check Cowes weather in October.
September typically offers a milder climate, with temperatures ranging from a minimum of 6°C (44°F) to a maximum of 27°C (81°F), averaging around 16°C (61°F). This month experiences moderate rainfall, totaling 48 mm (1.9 in) over about 9 days, accompanied by a comfortable humidity level of 82%. In contrast, November brings a noticeable chill, with temperatures dipping as low as -1°C (31°F) and averaging 9°C (49°F), peaking at just 16°C (62°F). Precipitation increases to 68 mm (2.7 in) over 12 days, and humidity rises slightly to 92%, making the air feel quite damp. For a detailed look at the weather in November, you can visit Cowes weather in November.
In comparing the weather of September and December, it's evident that December is significantly cooler and wetter. In September, temperatures range from a minimum of 6°C (44°F) to a maximum of 27°C (81°F), with an average of 16°C (61°F). The month experiences lower precipitation at 48 mm (1.9 in) over 9 days and a humidity level of 82%. In contrast, December's temperatures drop to a minimum of 0°C (32°F) and peak at 15°C (58°F), averaging just 8°C (47°F). This month records higher precipitation at 94 mm (3.7 in) spread over 14 days, along with increased humidity at 92%. For more detailed information, you can visit Cowes weather in December.
As summer transitions into autumn, September in Cowes offers a refreshing contrast to the warmer months. The average temperature settles around a pleasant 16°C (61°F), providing comfortable days that often still feel reminiscent of summer, yet cool evenings remind us of the impending fall. While the month sees occasional rainfall, with precipitation occurring on about nine days, the overall humidity remains relatively high at 82%, lending a distinct feel to the air. This blend of warmth and moisture makes September a unique time in Cowes, perfect for enjoying the last vestiges of outdoor activities before winter sets in. For more in-depth insights, check out the detailed Cowes Climate.