Last updated: March 17, 2025
In September, Fort William, United Kingdom experiences a diverse range of weather conditions, characterized by a maximum temperature of 23°C (73°F) and a cooler average of 11°C (52°F). Visitors can expect cool mornings with temperatures dipping as low as -2°C (29°F). The month is also marked by significant precipitation, with 176 mm (6.9 in) of rain spread over 19 days, contributing to the area's lush scenery. High humidity levels at 89% create a palpable freshness in the air, making September a dynamic time to experience the beauty of Fort William.
As September rolls into Fort William, temperatures begin to show their early autumn character. With minimums hovering around -2°C (29°F), the chill of summer gives way to a cooler atmosphere, yet the average temperature comfortably sits at 11°C (52°F), marking a transitional phase. The days can still embrace warmth, with maximums reaching up to 23°C (73°F), allowing for lingering whispers of summer. This month stands out as a bridge between the vibrant warmth of August and the cooling days of October, where the landscape's hues shift dramatically, inviting nature enthusiasts to experience the beauty of changing seasons. Whether exploring majestic hills or enjoying cozy evenings, September in Fort William offers a delightful mix of crispness and warmth.
In September, Fort William experiences a noteworthy shift in precipitation patterns, with 176 mm (6.9 in) of rain spread across 19 days. This substantial rainfall marks a slight dip compared to the wetter months of July and August, yet sustains the region’s lush greenery and vibrant landscapes. The transition into autumn is marked by a notable increase in precipitation compared to earlier spring and summer months, as anticipation builds for the wetter conditions typical of October. This trend illustrates Fort William's climate as consistently damp, reinforcing its reputation as a haven for nature lovers and outdoor enthusiasts, even as the days grow shorter and temperatures begin to drop.
In September, Fort William experiences a peak in humidity, reaching 89%, which reflects a broader trend of increasing moisture levels as the year progresses. Following the summer months, where humidity levels hovered around 87% to 88%, September marks a notable shift, setting the stage for a damp autumn. This seasonal rise continues into October and November, with humidity remaining high at 89% and 90% respectively. Reflecting the area's maritime climate, the overall pattern shows a gradual decline from the higher 86% in January to the lower humidity levels seen in late spring, emphasizing how the wet conditions of late summer seamlessly transition into the autumn months.
As summer transitions into autumn, the UV Index in Fort William, United Kingdom, shows a notable shift in September, landing at a moderate level of 5. This marks a slight decline from the high index of 6 in August, reflecting the diminishing intensity of the sun as days grow shorter. With a burn time of 30 minutes, safe sun exposure remains achievable, making it a perfect time for outdoor enthusiasts to enjoy the scenic beauty of the region while still keeping skin protection in mind. Following September, the UV Index further decreases into the autumn months, indicating that while UV exposure remains a consideration, the urgency for caution gradually lessens. For more detailed information on UV trends throughout the year, visit Fort William UV Index.
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As summer gracefully transitions into autumn, September in Fort William boasts a commendable 238 hours of sunshine, making it one of the sunniest months of the year. This figure, while a dip from the bountiful hours of sunlight experienced in July and August, still outshines the dreariness expected in the colder months ahead. Notably, the sunshine hours in September reflect a downward trend from the peak summer months but remain significantly higher than the gloomy figures seen in January and November. This favorable ambiance invites locals and visitors alike to revel in the beauty of the changing leaves, where the golden hues of autumn are illuminated under the lingering light of early fall.
In Fort William, United Kingdom, the likelihood of enjoying sunny weather in September declines significantly, with only an 11% chance of sunshine. This trend marks a noticeable drop as summer transitions into autumn, especially when compared to April’s 40%, which showcases the region's brief seasonal peak. As the months progress towards winter, the sun becomes increasingly elusive, with October and December offering even lower prospects of sunny days at 10% and 9%, respectively. Thus, while September maintains a semblance of summer's brightness, it's clear that the chance of enjoying sunny weather is beginning to wane.
As summer fades into autumn in Fort William, September brings a gentle transition with approximately 12 hours of daylight, a noticeable decline from the sun-drenched days of July and August, which bask in nearly 17 and 15 hours, respectively. This gradual decrease signals the shift towards shorter days, reminiscent of the earlier months of the year when daylight was a mere 7 hours in January. The month not only showcases a blend of lingering summer brightness but also prefaces the approaching autumn chill, marking a time of significant change in both the landscape and daily life. Although the days grow shorter, the richness of autumn colors adds a beautiful contrast to the diminishing light, inviting reflection and appreciation for nature's cycles.
As September arrives in Fort William, the winds begin to pick up just slightly, averaging a gentle 2.6 m/s (6 mph). This marks a transition from the lull of summer winds, which dipped to their lowest in July at 1.8 m/s (4 mph). With the onset of autumn, the breeze becomes more invigorating, reminiscent of the bustling energy that accompanies the changing season. Interestingly, the wind speeds during September are on par with those of the late spring and early summer months, suggesting a consistent and calming current before the winds gain strength again in October, when they reach 3.1 m/s (7 mph). This gentle yet steady wind serves as a reminder of the natural rhythm of the weather in Fort William, evoking the tranquility of the Scottish Highlands as they prepare for the crispness of fall.
The weather in Fort William 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 Fort William and find detailed weather information for every month.
September and January present contrasting weather patterns. In September, temperatures range from a minimum of -2°C (29°F) to a maximum of 23°C (73°F), with an average of 11°C (52°F). The month is relatively wet, experiencing 176 mm (6.9 in) of precipitation over 19 days, accompanied by high humidity at 89%. In stark contrast, January is colder, with temperatures dipping as low as -10°C (14°F) and peaking at 11°C (53°F), averaging around 3°C (37°F). Although slightly less precipitation occurs in January at 158 mm (6.2 in) across 16 days, the humidity remains similar at 86%. For more details, see Fort William weather in January.
September and February present distinctive weather patterns. In September, temperatures range from a chilly -2°C (29°F) at night to a comfortable 23°C (73°F) during the day, with an average of 11°C (52°F). The month experiences significant precipitation, totaling 176 mm (6.9 in) over 19 days, accompanied by high humidity levels at 89%.
In contrast, February is markedly colder, with minimum temperatures dropping to -13°C (9°F) and maximums reaching only 12°C (54°F). The average temperature is just 3°C (37°F). This month sees even more precipitation, amounting to 210 mm (8.3 in) over the same number of days but with slightly lower humidity at 85%. For more detailed information, check out Fort William weather in February.
In comparing the weather of September and March, September typically features milder temperatures, with an average of 11°C (52°F) and a maximum of 23°C (73°F), while March sees a cooler average temperature of 4°C (40°F) and a maximum of 15°C (60°F). Precipitation is relatively high in both months, but September experiences slightly less with 176 mm (6.9 in) over 19 days compared to March's 188 mm (7.4 in) over 21 days. Humidity levels are also comparable, with September at 89% and March slightly lower at 85%. Overall, September offers a warmer and somewhat drier climate compared to the colder and wetter conditions of March. For more detailed information, you can check Fort William weather in March.
When comparing the weather in September and April, September generally features milder temperatures with a range from -2°C (29°F) to a maximum of 23°C (73°F), while April experiences slightly cooler conditions, with minimums reaching -4°C (26°F) and maximums hitting 20°C (69°F). The average temperature in September is higher at 11°C (52°F) compared to April's 6°C (43°F). Additionally, September sees significantly more rainfall, accumulating 176 mm (6.9 in) over 19 days, in contrast to April, which records only 74 mm (2.9 in) across 15 days. Humidity levels are also a bit higher in September at 89%, compared to 84% in April. For a more detailed look at April weather, visit Fort William weather in April.
When comparing the weather between September and May, several notable differences emerge. September typically offers a wider temperature range, with minimums averaging -2°C (29°F) and maximums reaching up to 23°C (73°F). This month experiences an average of 11°C (52°F), alongside higher precipitation levels of 176 mm (6.9 in) over about 19 days and a humidity of 89%. In contrast, May features slightly cooler temperatures, with the average minimum at -3°C (28°F) and a maximum of 24°C (76°F), along with an average of 9°C (49°F). Precipitation in May is significantly less, at 99 mm (3.9 in) spread over 16 days, and humidity is lower at 82%. For a closer look at May's weather specifics, you can explore Fort William weather in May.
When comparing the weather in September and June, notable differences emerge. September experiences cooler temperatures, with a minimum of -2°C (29°F) and an average of 11°C (52°F), compared to June's slightly warmer minimum of 3°C (38°F) and average of 12°C (54°F). Additionally, September tends to be rainier, accumulating 176 mm (6.9 in) of precipitation over 19 days, while June has a total of 144 mm (5.7 in) across the same number of days. The humidity is also higher in September at 89%, compared to June’s 84%. For more detailed information about June weather, you can visit Fort William weather in June.
When comparing the weather in September to that of July, notable differences emerge. September tends to be cooler, with average temperatures ranging from a minimum of -2°C (29°F) to a maximum of 23°C (73°F), and an average temperature of 11°C (52°F). In contrast, July enjoys milder conditions, with minimum temperatures around 5°C (41°F) and a maximum reaching 26°C (78°F), resulting in an average of 14°C (57°F). Furthermore, September experiences more precipitation, totaling 176 mm (6.9 in) over 19 days, compared to July's 128 mm (5.0 in) over the same number of days. The humidity remains fairly high in both months, slightly increasing in September at 89% compared to July’s 87%. For more detailed information, you can check Fort William weather in July.
In comparing the weather of September and August, September tends to be cooler with temperatures ranging from a minimum of -2°C (29°F) to an average of 11°C (52°F) and a maximum of 23°C (73°F). In contrast, August has relatively warmer temperatures, with a minimum of 5°C (41°F), an average of 13°C (56°F), and a maximum of 24°C (75°F). While September sees slightly more precipitation with 176 mm (6.9 in) over 19 days, August is not far behind with 168 mm (6.6 in) spread across 22 days. Humidity levels are comparable, hovering around 89% in September and 88% in August. For more specifics about August weather, you can check Fort William weather in August.
In September, temperatures range from a minimum of -2°C (29°F) to a maximum of 23°C (73°F), with an average of 11°C (52°F). The month experiences frequent rain, totaling 176 mm (6.9 in) over 19 days, while humidity remains high at 89%. In contrast, October sees a slight drop in temperatures, with a minimum of -3°C (27°F), an average of 8°C (47°F), and a maximum of 17°C (62°F). Precipitation increases to 235 mm (9.3 in) spread across 24 days, while humidity stays consistent at 89%. For a detailed overview of weather conditions, check out Fort William weather in October.
September and November in Fort William present a distinct shift in weather patterns. September boasts a milder climate, with average temperatures around 11°C (52°F) and maximums reaching 23°C (73°F), while November cools down significantly to an average of 5°C (41°F) and max temperatures of 13°C (55°F). Both months experience similar precipitation levels at approximately 176 mm (6.9 in) for September and 171 mm (6.7 in) for November, with rain occurring on about 19 days each month. Humidity is slightly higher in November at 90%, compared to 89% in September. For a more detailed look at what to expect, visit Fort William weather in November.
September and December present distinctly different weather conditions. In September, temperatures range from a minimum of -2°C (29°F) to a maximum of 23°C (73°F), with an average of 11°C (52°F). The month experiences considerable precipitation, totaling 176 mm (6.9 in), over 19 days, complemented by high humidity at 89%. In contrast, December sees lower temperatures, with a minimum of -9°C (17°F) and a maximum of 11°C (52°F), averaging just 3°C (38°F). The precipitation slightly increases to 181 mm (7.1 in) over 21 days, while humidity remains relatively high at 86%. For more detailed information about December weather in Fort William, check out this link: Fort William weather in December.
As September graces Fort William, the weather transitions noticeably from the warmth of summer to the crisp onset of autumn. Average temperatures hover around a comfortable 11°C (52°F), making it a refreshing month for outdoor enthusiasts, despite the occasional chill that dips to -2°C (29°F) during the nights. With 176 mm (6.9 in) of precipitation spread over 19 days, September tends to be wetter compared to the preceding summer months, resulting in lush landscapes that are perfect for exploration. The high humidity adds a unique, moody charm to the scenery, emphasizing the dramatic beauty of this Scottish region. For a deeper insight into the overarching climate patterns, visit Fort William Climate.