Last updated: March 17, 2025
September in Falmouth, United Kingdom, offers a delightful blend of warm and cool weather, making it an ideal time for exploration. The maximum temperature can reach a pleasant 27°C (81°F), while the average settles around 15°C (59°F), ensuring comfortable days and cooler nights. However, visitors should come prepared for some rain, as the area experiences 60 mm (2.3 in) of precipitation over approximately 10 days of the month, accompanied by an 85% humidity level that enhances the coastal charm. With a mix of sun and occasional showers, September presents an enticing opportunity to enjoy Falmouth’s vibrant landscapes and rich maritime culture.
As the summer fades in Falmouth, September brings a delightful transition into autumn, characterized by mild temperatures. With a minimum of 6°C (43°F) and an average soaring to 15°C (59°F), the month offers a comfortable respite before the chill sets in. Daytime highs can reach a pleasing 27°C (81°F), allowing for lingering warmth and outdoor adventures. This blend of warmth and refreshing air creates an inviting atmosphere, perfect for enjoying the last days of summer. With temperatures gradually cooling down compared to August, one can sense the subtle shift in the seasons, making September a unique blend of summer's embrace and autumn's approach.
September in Falmouth sees an average precipitation of 60 mm (2.3 in), making it a rather typical month in terms of rainfall. With about 10 rainy days, it’s a transition period as the summer warmth begins to fade, welcoming the wetter autumn months. This amount is consistent with the drier summer averages, where July and August recorded slightly lower totals of 68 mm (2.7 in) and 59 mm (2.3 in), respectively. As Falmouth shifts into October, however, a notable increase in precipitation occurs, jumping to 102 mm (4.0 in), hinting at a more saturated season ahead. The steadiness of September's rainfall serves as a gentle reminder of the imminent weather shifts, framing it as a bridge between the dry summer and the upcoming autumn deluge.
In September, Falmouth experiences a humidity level of 85%, indicative of a gradual decline from the peak summer months, where humidity reaches its highest at 87% in July. This subtle drop can be attributed to the transition into autumn, with moisture levels remaining relatively high. This trend of elevated humidity continues from late spring through summer, peaking in July before settling slightly in September. While the lingering warmth of summer keeps humidity levels significant, the onset of autumn begins to invoke a shift towards drier conditions, marking the beginning of a seasonal change that the town embraces with its picturesque coastal charm.
As summer fades into autumn, September in Falmouth, United Kingdom, showcases a UV Index of 6, placing it in the high exposure category, with a burn time of just 25 minutes. This marks a slight decrease from August's strong levels but still indicates the necessity for sun protection during outdoor activities. The UV Index trends throughout the year illustrate a clear pattern: starting from a low exposure in winter, it peaks in the summer months, before tapering off again in the fall. It's essential to be mindful of UV exposure during these transitional periods, as the sun's intensity can still be significant. For more detailed information, check the Falmouth UV Index resource.
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In September, Falmouth basks in 329 hours of sunshine, a delightful continuation of the summer’s bright embrace. As the warm days of July and August gradually taper off, the golden glow lingers, offering a lovely transition into autumn. This month sees a significant drop from the peak summer sunshine, yet it still surpasses the meager light of the cooler months, like the dim days of November and December. With almost 80 hours less sunlight than August, September’s warmth invites locals and visitors alike to enjoy the stunning coastal scenery and vibrant community events, making it an ideal time to relish the waning summer days before the season shifts.
September in Falmouth, United Kingdom, offers a promising chance of sunny days, with the likelihood of sunshine hovering around 31%. This marks a slight increase from the summer months, suggesting that early autumn can still provide some bright spells. While the chance of sun is lower than the peak of spring at 51% in April, it remains consistent with the summer averages, hinting at a transitional phase where the warmth of summer lingers. As the month progresses, the sun’s appearance may wane, following a trend that sees October's likelihood drop to 27%. Therefore, September stands out as a favorable time to enjoy the outdoors in Falmouth, balancing pleasant weather before the cooler months set in.
As summer transitions into autumn in Falmouth, United Kingdom, September marks a shift in daylight hours, offering approximately 12 hours of sunlight. This is a gradual decline from the peak of 16 hours in June, as the days begin to shorten, signaling the end of the warmest season. Following September, daylight dips further to 10 hours in October, creating a rhythmic ebb and flow that characterizes the changing seasons. The progression from the 14 hours of August to September's slightly diminished light reflects nature's subtle preparation for the cooler months ahead, inviting residents to savor the lingering warmth while it lasts.
In Falmouth, September welcomes a gentle breeze, with an average wind speed of 4.0 m/s (9 mph), marking a slight decline from the summer months. This reduction follows a seasonal trend where wind speeds typically reach their lowest in mid-year, particularly in June at 3.8 m/s (8 mph), before gradually picking up again in the autumn. As the year progresses, the winds gradually strengthen, peaking to 6.6 m/s (15 mph) in February and 6.4 m/s (14 mph) in December. The arrival of September thus signals a transition, where the refreshing summer winds give way to a calmer atmosphere, inviting locals and visitors alike to enjoy the scenic beauty of the coast in a more tranquil setting before the stronger gusts of autumn approach.
The weather in Falmouth 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 Falmouth and find detailed weather information for every month.
In comparing the weather of September and January, we observe notable differences in temperature and conditions. September features a mild temperature range, with lows of 6°C (43°F) and highs reaching up to 27°C (81°F), resulting in a pleasant average of 15°C (59°F). The month experiences approximately 60 mm (2.3 in) of precipitation over about 10 days, accompanied by relatively high humidity at 85%.
In contrast, January brings a much cooler climate, showcasing minimum temperatures dropping to -2°C (29°F) and a maximum of only 14°C (58°F), leading to a lower average temperature of 7°C (45°F). Despite similar precipitation levels of 59 mm (2.3 in), January tends to have one more wet day than September, with total rainfall spread over 11 days and humidity slightly lower at 81%. For more detailed weather conditions during this time, you can check Falmouth weather in January.
In September, temperatures range from a cool 6°C (43°F) at night to a warm 27°C (81°F) during the day, with an average of 15°C (59°F). The month receives about 60 mm (2.3 inches) of precipitation over approximately 10 days, while humidity hovers around 85%. In contrast, February experiences colder temperatures, with a minimum of -3°C (26°F) and a maximum of 15°C (60°F), averaging 8°C (46°F). This month is wetter, with 75 mm (3.0 inches) of precipitation spread over 14 days and a slightly lower humidity level of 84%. For more detailed information, you can check Falmouth weather in February.
In comparing the weather between September and March, we see significant differences in temperature and precipitation. September enjoys milder temperatures, with a minimum of 6°C (43°F) and a comfortable average of 15°C (59°F), reaching highs of 27°C (81°F). It also has relatively low precipitation, totaling 60 mm (2.3 in) over 10 days, paired with high humidity at 85%. In contrast, March is noticeably cooler, with temperatures dropping to a minimum of -5°C (24°F) and an average of 8°C (47°F), peaking at 17°C (64°F). The month is wetter, with 79 mm (3.1 in) of rain spread over 15 days and slightly lower humidity at 83%. For more information on March weather specifics in Falmouth, refer to Falmouth weather in March.
When comparing the weather in September and April, it's clear that September tends to be warmer overall. With average temperatures ranging from a minimum of 6°C (43°F) to a maximum of 27°C (81°F), September offers a more comfortable climate, especially in terms of higher daily averages of 15°C (59°F). In contrast, April sees lower temperatures, with an average of 10°C (50°F) and a max of only 22°C (72°F).
Precipitation levels are relatively similar between the two months, with September receiving 60 mm (2.3 inches) over about 10 days and April seeing 49 mm (1.9 inches) over 8 days. Humidity levels remain nearly the same, at 85% in September and 84% in April, indicating that both months can feel quite damp. For those interested in more detailed information, check out Falmouth weather in April.
In comparing the weather of September and May, we notice some distinct differences. September typically enjoys warmer temperatures, ranging from a minimum of 6°C (43°F) to a maximum of 27°C (81°F), with an average of 15°C (59°F). In contrast, May is slightly cooler, with temperatures varying from 2°C (36°F) to 25°C (77°F) and an average of 12°C (55°F). While both months experience high humidity levels at 85%, May sees slightly more precipitation, totaling 67 mm (2.6 in) over about 12 rainy days, compared to September’s 60 mm (2.3 in) across 10 days. For more detailed insights into May weather, you can check Falmouth weather in May.
In comparing the weather of September and June, both months present mild temperatures, with September's average temperature at 15°C (59°F) and June slightly warmer at the same average of 15°C (60°F). However, June experiences higher maximum temperatures, reaching up to 30°C (86°F) compared to September's peak of 27°C (81°F). Rainfall is also more significant in June, with 83 mm (3.3 in) over 13 days, whereas September sees less precipitation at 60 mm (2.3 in) over 10 days. Humidity levels are similar in both months, hovering around 85% in September and 86% in June. For more detailed information, you can check Falmouth weather in June.
When comparing the weather in September and July, September features slightly cooler temperatures, with a minimum of 6°C (43°F) and an average of 15°C (59°F), compared to July's minimum of 9°C (49°F) and an average of 17°C (63°F). Both months experience similar maximum temperatures, with July peaking at 28°C (83°F) and September reaching 27°C (81°F). However, September tends to be a bit wetter, averaging 60 mm (2.3 in) of precipitation over 10 days, while July sees 68 mm (2.7 in) across 11 days. Humidity levels are also comparable, with September at 85% and July slightly higher at 87%. For more detailed insights, check out Falmouth weather in July.
In comparing the weather between September and August, September sees a noticeable drop in minimum temperatures, averaging 6°C compared to August's 10°C. The average temperature in September is 15°C, slightly lower than August's average of 17°C, while the maximum temperature remains quite similar, with September reaching up to 27°C and August peaking at 26°C. Precipitation levels are comparable, with September receiving 60 mm over 10 days and August experiencing 59 mm spread across 13 days. Humidity remains high in both months, at 85% for September and 86% for August. For a detailed look at August weather, visit Falmouth weather in August.
September experiences milder temperatures, with a minimum of 6°C and an average of 15°C, peaking at 27°C. The month typically sees about 60 mm of precipitation over 10 days, while humidity remains relatively high at 85%. In contrast, October brings a noticeable drop in temperatures, starting at a minimum of 0°C and averaging 12°C, with a maximum of 20°C. Precipitation increases to 102 mm over 13 days, maintaining the same humidity level of 85%. For more detailed information on the weather conditions in October, you can visit Falmouth weather in October.
In September, temperatures range from a minimum of 6°C (43°F) to a maximum of 27°C (81°F), with an average of 15°C (59°F). The month experiences 60 mm (2.3 in) of precipitation over about 10 days, while humidity levels hover around 85%. In contrast, November sees significantly cooler temperatures, with a range from 1°C (34°F) to 16°C (61°F) and an average of 10°C (50°F). Precipitation increases to 83 mm (3.3 in) over 14 days, and humidity slightly decreases to 82%. For more details, check out Falmouth weather in November.
In comparing the weather of September and December, we see a notable shift in temperatures and precipitation patterns. September typically experiences milder temperatures, with a minimum of 6°C (43°F) and averaging around 15°C (59°F), peaking at a comfortable 27°C (81°F). This month also sees moderate precipitation of about 60 mm (2.3 in) over approximately 10 days, coupled with high humidity levels at 85%. In contrast, December brings cooler conditions, with temperatures dipping to a minimum of 0°C (33°F) and an average of 9°C (48°F), while the maximum reaches only 14°C (58°F). The winter month sees increased precipitation at 102 mm (4.0 in) spread over 17 days, though humidity remains slightly lower at 80%. For a detailed look at the winter weather, check out Falmouth weather in December.
As September rolls in, Falmouth experiences a delightful transition from the summer heat, with temperatures peaking at a warm 27°C, yet averaging a comfortable 15°C. While the warmth lingers, the month often brings increased humidity and a touch of rain, with about 10 days seeing precipitation that totals around 60 mm. This shift in weather can feel more invigorating compared to the sweltering summer months, marking a refreshing change as the region prepares for autumn. For a more in-depth look at what to expect year-round, check out Falmouth Climate.