Last updated: March 17, 2025
September on the Isle of Mull, United Kingdom, offers a captivating blend of weather characteristics, making it a unique destination for visitors. With maximum temperatures reaching 21°C (70°F), the island basks in mild warmth, while the average temperature hovers around 13°C (55°F). Cool breezes can bring the mercury down to as low as 3°C (38°F) during the nights, creating a refreshing atmosphere. However, prepare for the varied elements of September, as the island experiences significant precipitation totaling 215 mm (8.5 in) across approximately 20 days of rain, all wrapped in a humid 89% environment. This combination of temperatures and moisture creates lush landscapes and dramatic scenery, characteristic of Mull's enchanting charm.
September on the Isle of Mull offers a delightful transition into autumn, with temperatures reflecting the gradual cool down from summer. The minimum temperature hovers around 3°C (38°F), providing a crisp start to the day, while the average settles at a comfortable 13°C (55°F). As the days linger on, the max temperature can peak at 21°C (70°F), reminiscent of the warmer months. Compared to the preceding summer, September shows a notable drop in nighttime chill, yet maintains a pleasant daytime warmth, making it an ideal time for exploring the island's stunning landscapes and enjoying its vibrant autumn hues. This month serves as a perfect bridge between the balmy summer and the cooler autumn months ahead, ensuring visitors experience the serene beauty of Mull in its transitional glory.
September marks a notable transition in the weather patterns of the Isle of Mull, with precipitation levels peaking at 215 mm (8.5 in) over 20 rainy days. This increase is part of a general upswing in rainfall as summer wanes, following the relatively milder August where only 184 mm (7.3 in) fell across 23 days. The onset of autumn brings heavier showers, reflecting a shift towards more robust precipitation that will continue through October, which averages an impressive 309 mm (12.2 in). As the month progresses, the island's lush landscape benefits from this burst of moisture, setting the stage for the vibrant colors of fall. The trend of increasing rainfall from the summer months, culminating in a damp September, underscores the island's unique maritime climate, characterized by its wet and changeable weather.
In September, the Isle of Mull experiences a notable uptick in humidity, reaching 89%, which marks the highest level since the peak of 88% in August. This increase suggests a transition towards the wetter autumn months, as evidenced by the gradual rise from 82% in May to September’s elevated figure. As the year progresses, the humidity remains relatively high, with October and November both maintaining 89% and spiraling into a slightly higher 90% in November. These trends indicate that while summer lingers in the air, the approach of fall brings a palpable shift, wrapping the island in a misty embrace as the days shorten and temperatures cool.
As September rolls into the Isle of Mull, the UV Index sees a moderate rating of 5, indicating it's time to be mindful of sun exposure. This marks a slight decline from the peak summer months of June and July, where the index reached a very high level of 8. In September, residents and visitors can safely enjoy outdoor activities with a burn time of about 30 minutes before the sun's rays become a concern. This trend showcases a transition from the intense summer sunlight to a more manageable level, reminding us that while the sun can be enjoyed, precautions are still essential. For more detailed information on the UV Index throughout the year, check out Isle Of Mull UV Index.
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As the summer warmth begins to wane, September in the Isle of Mull offers a delightful contrast to the sun-drenched months that preceded it. With 256 hours of sunshine, this month still bathes the island in a golden glow, signaling the tail end of the sun-soaked season. Following a peak in June and July at around 365 and 369 hours respectively, September experiences a gentle decline, yet remains significantly brighter than the dreary winter months ahead. This harmonious balance of light suggests an inviting time for visitors to explore the stunning landscapes, breathe in the fresh coastal air, and experience the vibrant transitioning of nature as autumn approaches. The islands’ charm endures, inviting you to relish its beauty before the shorter days settle in.
As September rolls in on the Isle of Mull, the likelihood of basking in sunny weather takes a noticeable dip, with only a 17% chance of sunshine. This marks a decline in comparison to the sunnier months of late spring and early summer, where the chances hovered around 23% to 48%. Interestingly, the weather begins to shift with the onset of autumn, reflecting a broader trend of diminishing sunshine from the vibrant days of summer. This pattern continues into October, which further drops to 15% likelihood. While the island's breathtaking beauty remains constant, those seeking sunny days in September may want to prepare for a bit of cloud cover as the days grow shorter and cooler.
As summer gracefully fades into autumn, September in the Isle of Mull, United Kingdom, offers a delightful balance of daylight, with approximately 12 hours to enjoy. This month marks a gentle decline from the sun-drenched 16 hours of July and 15 hours of August, embracing the cozy shift in seasons. With each passing month, daylight diminishes, transitioning from the lavish 17 hours in June to the more understated 10 hours in October. This shift not only heralds the approach of cooler days but also enriches the vibrant hues of nature, inviting both locals and visitors to experience the stunning landscapes transformed by the early autumn light.
In September, the winds in the Isle of Mull begin to shift, averaging 4.3 m/s (10 mph)—a slight increase compared to the summer months. After experiencing a marked decline in wind speeds during July and August, which dropped to their annual lows, September heralds the onset of a more invigorating breeze that hints at the approaching autumn. This month’s winds offer a gentle transition from the stillness of summer, foreshadowing the stronger gusts to come in October and November, where averages rise sharply once again. As the landscape transforms with the changing seasons, the whispers of September winds carry the promise of both adventure and reflection.
The weather in Isle Of Mull 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 Isle Of Mull and find detailed weather information for every month.
In September, the weather is relatively mild with temperatures ranging from a minimum of 3°C (38°F) to a maximum of 21°C (70°F), averaging around 13°C (55°F). This month experiences significant rainfall, with 215 mm (8.5 in) spread over approximately 20 days and a high humidity level of 89%. In contrast, January brings much colder temperatures, with a minimum of -3°C (27°F) and a maximum of 12°C (54°F), averaging just 6°C (42°F). Although it is drier than September, with 183 mm (7.2 in) of precipitation over 19 days and slightly lower humidity at 86%, the winter chill is palpable. For a detailed overview of January weather, you can visit Isle Of Mull weather in January.
When comparing the weather in September and February, a stark contrast is evident. September enjoys milder temperatures, with a minimum of 3°C (38°F) and an average of 13°C (55°F), peaking at 21°C (70°F). In contrast, February is chillier, starting with a minimum of -6°C (22°F) and an overall average of 5°C (42°F), only reaching a maximum of 11°C (52°F). Both months are relatively wet, with September receiving 215 mm (8.5 in) of precipitation over 20 days, while February sees slightly more rainfall at 225 mm (8.9 in) across 21 days. Humidity levels remain high in both months, with September at 89% and February slightly lower at 85%. For more specific insights into February weather, you can check Isle Of Mull weather in February.
When comparing the weather between September and March, significant differences emerge in both temperature and precipitation. September typically boasts milder temperatures, ranging from a minimum of 3°C (38°F) to a maximum of 21°C (70°F), with an average of 13°C (55°F). In contrast, March experiences cooler temperatures, with lows of -3°C (26°F) and highs reaching only 14°C (57°F), averaging around 6°C (43°F).
While September sees a higher level of precipitation, totaling 215 mm (8.5 in) over approximately 20 days, March is slightly drier with 193 mm (7.6 in) over about 21 days. Humidity levels are relatively high in both months, with September at 89% and March at 85%. For a more detailed look at March weather patterns, you can visit Isle Of Mull weather in March.
When comparing the weather in September and April, there are notable differences in temperature and precipitation. September typically has a milder range, with average temperatures between 3°C (38°F) and 21°C (70°F), while April is cooler, featuring temperatures from -1°C (31°F) to 17°C (64°F). In terms of precipitation, September is much wetter, receiving 215 mm (8.5 in) over approximately 20 days, compared to April’s 72 mm (2.8 in) across 14 days. Humidity levels are slightly higher in September at 89%, compared to 84% in April. For more details on weather conditions during this time, check out Isle Of Mull weather in April.
When comparing the weather in September and May, it’s clear that September tends to be slightly warmer, with average temperatures ranging from a chilly 3°C (38°F) to a comfortable 21°C (70°F). In contrast, May offers cooler averages, with temperatures typically between 2°C (37°F) and 20°C (69°F). September also experiences significantly more precipitation, averaging 215 mm (8.5 in) over 20 days, while May sees lower rainfall at 92 mm (3.6 in) over 15 days. Additionally, September's humidity is higher at 89%, compared to May's 82%. For more details about the weather in May, you can refer to Isle Of Mull weather in May.
When comparing the weather in September and June, you'll notice distinct differences in temperature and precipitation. September boasts a wider temperature range, with a minimum of 3°C (38°F) and a maximum of 21°C (70°F), while June has a milder range, with its minimum at 7°C (44°F) and a peak of 22°C (72°F). The average temperature in both months hovers around 13°C (55°F), but September tends to be rainier, receiving 215 mm (8.5 in) of precipitation over 20 days, compared to June's 137 mm (5.4 in) over 18 days. Additionally, September's humidity level is slightly higher at 89%, while June sits at 84%. For a more detailed look at what to expect in June, you can check out Isle Of Mull weather in June.
When comparing the weather in September and July, September tends to be cooler, with average temperatures ranging from a minimum of 3°C (38°F) to a maximum of 21°C (70°F), whereas July sees slightly warmer temperatures, with minimums of 9°C (48°F) and maximums reaching 22°C (72°F). Additionally, September experiences significantly higher precipitation at 215 mm (8.5 in) over 20 days, compared to July's 144 mm (5.7 in) across 18 days. The humidity levels are fairly similar, with September at 89% and July at 87%. For more details on July weather, you can check this link: Isle Of Mull weather in July.
In comparing the weather between September and August, September experiences cooler temperatures, with a minimum of 3°C (38°F) compared to August's warmer minimum of 9°C (49°F). The average temperature in September is slightly higher at 13°C (55°F) than in August at 14°C (57°F), but both months see a maximum of 21°C (70°F). Precipitation levels rise in September, accumulating to 215 mm (8.5 in) over 20 days, whereas August has a slightly lower total of 184 mm (7.3 in) spread across 23 days. Humidity remains similar in both months, with September at 89% and August at 88%. For more details on August weather specifics, visit Isle Of Mull weather in August.
In comparison to September, October experiences cooler average temperatures, with daytime highs dropping from 21°C (70°F) to 18°C (64°F) and average temperatures decreasing from 13°C (55°F) to 10°C (51°F). Both months share the same minimum temperature of around 3°C (37°F-38°F). Precipitation also significantly increases in October, rising from 215 mm (8.5 in) over 20 days to a total of 309 mm (12.2 in) across 24 days, while humidity remains constant at 89%. For more information on the weather specifics for October, visit Isle Of Mull weather in October.
September and November exhibit notable differences in weather patterns. In September, temperatures range from a minimum of 3°C (38°F) to a maximum of 21°C (70°F), with an average of 13°C (55°F). It is a relatively wet month, receiving 215 mm (8.5 in) of precipitation over 20 days and maintaining a high humidity level of 89%. In contrast, November sees cooler temperatures, with a minimum of -1°C (31°F) and a maximum of 14°C (57°F), averaging 8°C (46°F). Although slightly wetter, November experiences 219 mm (8.6 in) of precipitation across 21 days and a marginally higher humidity of 90%. The transition from September to November signifies a shift towards colder and more consistently rainy conditions. For a deeper look into November's weather on the Isle of Mull, check out Isle Of Mull weather in November.
September and December present quite different weather patterns. In September, temperatures range from a minimum of 3°C (38°F) to a maximum of 21°C (70°F), with an average of 13°C (55°F). This month typically sees high humidity at 89% and around 215 mm (8.5 in) of precipitation over 20 days. In contrast, December cools down significantly, with temperatures ranging from -4°C (25°F) to 12°C (54°F) and an average of 6°C (43°F). It also experiences increased precipitation levels, totaling 247 mm (9.7 in) across about 23 days, while humidity remains relatively high at 86%. For more specific details about weather conditions during this month, check Isle Of Mull weather in December.
As September unfolds on the Isle of Mull, it marks a transition from the summer’s warmth to the crisper touch of autumn. With temperatures beginning to dip, you'll notice a distinct chill in the air, especially during the nights. While the days may still reach a comfortable high, the increased precipitation, with rain gracing nearly two-thirds of the month, brings a vibrant freshness to the landscape. The high humidity accentuates the lush greenery the island is known for, yet it can make the air feel heavier than in the preceding summer months. For those curious about the island’s climate throughout the year, explore more at Isle Of Mull Climate.