Last updated: March 17, 2025
In September, St Austell experiences a delightful transition into autumn, with temperatures ranging from a pleasant maximum of 24°C (76°F) to a cooler minimum of 8°C (46°F), averaging around 15°C (60°F). Despite the mild weather, the area sees 11 days of precipitation, totaling 68 mm (2.7 in), making it essential for visitors to prepare for occasional showers. With a humidity level at 79%, the air retains a refreshing coastal feel, perfect for enjoying the scenic beauty of this charming region. Whether exploring the lush landscapes or strolling along the coast, September in St Austell promises a mix of mild temperatures and vibrant autumn hues.
As September rolls into St Austell, the temperatures begin to shift gently from the warmth of summer. With minimums around 8°C (46°F) and averages reaching 15°C (60°F), the month offers a comfortable transition into the cooler autumn season. Notably, the maximum temperatures peak at a pleasant 24°C (76°F), allowing for lingering bright days perfect for outdoor adventures. This gradual decline from the heights of summer reflects a picturesque shift, as both day and night temperatures become more moderate, ushering in the vibrant hues of fall while still offering a taste of late summer warmth.
In September, St Austell experiences a moderate level of precipitation, with 68 mm (2.7 in) of rain falling over 11 days. This rainfall marks a notable decrease compared to the wetter autumn months ahead, with October typically delivering the most rain at 118 mm (4.7 in). The weather in September reflects a transition, as summer's warmth gradually gives way to autumn's moisture, creating a blend of damp days and occasional sunny spells. With just a few less rainy days than the previous month, September serves as a gentle reminder of the wetter weather to come, maintaining a delicate balance between lingering summer vibes and the onset of fall.
In September, St Austell experiences a noticeable shift in humidity levels, settling at a comfortable 79%. This represents a subtle increase from the drier summer months where July and August recorded 70% and 73% respectively. As autumn approaches, the humidity begins to climb again, leading into the wetter months of October and November, which see levels peak at 89% and 90%. Overall, the gradual decline from the spring’s higher humidity—peaking at 86% in March—reflects the region's transition towards a more humid, cooler climate as the year progresses. This seasonal ebb and flow not only shapes local weather patterns but also influences the lush, vibrant landscapes typical of the area.
As September rolls into St Austell, the UV Index remains elevated at 6, categorizing it as high and aligning closely with the summer months. This trend underscores the need for sun protection, especially as the burn time is still a noteworthy 25 minutes. After the peak UV readings of 9 in June and 8 in July, the gradual decline indicates a transition towards the cooler autumn months. However, with September holding onto summer’s warmth, it's essential to stay vigilant against sun exposure. For more detailed insights and forecasts, check the St Austell UV Index.
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As the summer fades in St Austell, September offers a delightful balance of warmth and sunshine, claiming 328 hours of bright days. Following the peak of July, with its impressive 426 hours of sunshine, the month sustains a notable glow, significantly brighter than the gloomy winter months ahead. While September’s daylight may dip from the summer highs, it still stands as a reassuring reminder of the sun-soaked summer that was, far surpassing the 261 hours expected in October. This gentle transition into autumn allows residents and visitors alike to savor the lingering warmth while preparing for the cooler days that inevitably follow, making St Austell a charming escape as summer draws to a close.
In St Austell, the likelihood of sunny weather in September shows a moderate chance of 32%, making it a pleasantly promising end to the summer season. As autumn approaches, sunshine percentages tend to drop from the highs of earlier months, with April peaking at 52%. While September's chance of sun surpasses the cooler months that follow, it reflects a gradual decline from the heart of summer, where July and August offer 37% and 29% respectively. This trend underscores a typical pattern of diminishing sunlight as the year progresses, yet September still holds the charm of lingering warmth, inviting outdoor enthusiasts to soak up the final rays before winter sets in.
As September unfolds in St Austell, the transition from the long, sun-drenched days of summer begins to set in. With daylight lasting 12 hours, this month stands as a bridge between the vibrant months of June and August, where daylight peaked at 16 and 14 hours, respectively. As autumn approaches, the sun gently departs earlier each day, hinting at the crisp evenings to come. Following September, the daylight duration gradually diminishes, plummeting to 10 hours in October and then to a mere 8 hours by November. This gradual decline in daylight encapsulates the shift in seasons, inviting the cozy embrace of fall while bidding farewell to the brightness of summer.
As summer transitions to autumn, September in St Austell reveals a gentle shift in the landscape of wind. With an average wind speed of 4.4 m/s (10 mph), September showcases the calm after the summer's breezy months, maintaining similar conditions to the previous two months. This slight reduction in wind speed sets a tranquil tone for early fall, in stark contrast to the brisk winds of the following months, particularly October which ramps up to 5.6 m/s (12 mph). Observing the year as a whole, it's evident that the winds vary, peaking in February and December, while the late summer and early autumn months adopt a softer demeanor, inviting a serene exploration of St Austell’s coastal beauty.
The weather in St Austell 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 St Austell and find detailed weather information for every month.
September and January present contrasting weather patterns, reflecting the transition from late summer to winter. In September, temperatures range from a minimum of 8°C (46°F) to a pleasant average of 15°C (60°F), peaking at 24°C (76°F) on warmer days. The humidity is relatively moderate at 79%, and precipitation is common, averaging 68 mm (2.7 in) over 11 days. In contrast, January experiences significantly cooler temperatures, with a minimum of -1°C (31°F) and an average of 7°C (46°F), reaching a maximum of only 14°C (58°F). The humidity rises to 88%, and despite similar precipitation levels of 68 mm (2.7 in), the colder air makes January feel much chillier. For more insights on January weather, check out St Austell weather in January.
In comparing the weather between September and February, we see notable differences in temperature and precipitation patterns. September typically offers milder temperatures, with lows around 8°C (46°F) and highs reaching up to 24°C (76°F), resulting in an average of 15°C (60°F). In contrast, February brings much cooler conditions, with minimums diving to -2°C (28°F) and maximums peaking at 14°C (57°F), leading to an average of only 8°C (46°F). Precipitation is also more frequent in February, with 91 mm (3.6 in) spread over 15 days compared to September's 68 mm (2.7 in) over 11 days. The humidity is higher in February at 88%, compared to September’s 79%. For more specific details on the climate in February, you can refer to St Austell weather in February.
September and March exhibit contrasting weather characteristics. In September, the temperatures are generally milder, with a minimum of 8°C (46°F) and a maximum of 24°C (76°F), while March is significantly cooler, starting with a minimum of -4°C (25°F) and only reaching a maximum of 15°C (60°F). Additionally, September experiences less rainfall, totaling 68 mm (2.7 in) over 11 days, compared to March's 88 mm (3.5 in) spread across 16 days. Humidity levels are also slightly higher in March at 86%, compared to September’s 79%. For more detailed insights on what to expect, you can check St Austell weather in March.
When comparing the weather in September to that in April, notable differences emerge. September enjoys warmer temperatures, with a minimum of 8°C (46°F) and an average of 15°C (60°F), peaking at 24°C (76°F). In contrast, April is cooler, featuring a minimum of 2°C (35°F) and an average of 10°C (50°F), with a maximum of 20°C (68°F). Precipitation levels are also lower in April, accumulating 52 mm (2.0 in) over 8 days, while September sees 68 mm (2.7 in) spread over 11 days. Humidity levels are slightly higher in April at 84%, compared to September's 79%. For a more detailed view of April's climate, you can check out St Austell weather in April.
In comparing the weather of September and May, we find notable differences in temperature and precipitation patterns. September boasts a warmer minimum temperature of 8°C (46°F) and an average of 15°C (60°F), peaking at 24°C (76°F). In contrast, May starts cooler, with a minimum of 4°C (39°F) and an average of 12°C (54°F), reaching a maximum of 22°C (72°F). Both months experience significant rainfall, with September receiving 68 mm (2.7 in) over 11 days and May slightly wetter at 77 mm (3.0 in) over 12 days. Humidity levels are similar, with September at 79% and May slightly higher at 80%. For those interested in a deeper dive into May's climate characteristics, you can check St Austell weather in May.
In comparing the weather of September and June, we notice some interesting similarities and differences. Both months exhibit a minimal temperature range, with September's minimum at 8°C (46°F) and an average of 15°C (60°F), while June maintains a slightly higher average of 15°C (59°F) with a maximum reaching 26°C (80°F). Precipitation levels are slightly higher in June, totaling 85 mm (3.3 in) over 13 days compared to September's 68 mm (2.7 in) across 11 days. Humidity is fairly consistent in both months, with September at 79% and June at 80%. For a detailed look at the conditions specific to June, you can visit St Austell weather in June.
In comparing the weather of September and July, we observe some notable differences. September boasts a minimum temperature of 8°C (46°F) and averages 15°C (60°F), while July starts slightly warmer, with a minimum of 10°C (50°F) and an average of 17°C (63°F). The maximum temperatures are also higher in July, reaching up to 26°C (79°F) compared to September's maximum of 24°C (76°F). However, September experiences slightly more precipitation, with 68 mm (2.7 in) over 11 days, compared to July's 75 mm (3.0 in), which also occurs over 11 days. Humidity is notably higher in September at 79%, compared to 70% in July. For more detailed insights, check out St Austell weather in July.
September weather in St Austell generally features cooler temperatures compared to August, with a minimum of 8°C (46°F) and an average of 15°C (60°F). In contrast, August starts off slightly warmer, with minimum temperatures around 10°C (51°F) and an average of 17°C (62°F). Both months experience similar maximum temperatures, peaking at around 24°C (76°F). However, September sees a slight increase in precipitation, totaling 68 mm (2.7 in) over 11 days, while August has 71 mm (2.8 in) spread across 12 days. Additionally, humidity levels in September are higher at 79%, compared to 73% in August. For more details regarding August weather, you can check St Austell weather in August.
In September, the weather typically features milder temperatures, with a minimum of 8°C (46°F) and a maximum of 24°C (76°F), averaging around 15°C (60°F). Precipitation levels stand at 68 mm (2.7 in) over approximately 11 days, accompanied by a humidity of 79%.
In contrast, October brings a noticeable drop in temperature, with lows reaching 2°C (35°F) and highs peaking at 19°C (67°F), averaging 13°C (55°F). The month experiences increased rainfall, accumulating to 118 mm (4.7 in) across about 15 days, and humidity rises to 89%.
For a detailed look at what to expect in October, check out St Austell weather in October.
September generally presents milder and more pleasant weather compared to November. With average temperatures reaching 15°C (60°F) and highs of 24°C (76°F), it offers a more comfortable atmosphere, while November sees a significant drop, with an average temperature of only 10°C (50°F) and maximums around 16°C (61°F). Additionally, September experiences about 68 mm (2.7 in) of precipitation over 11 days, while November sees increased rainfall, totaling 98 mm (3.9 in) across 15 days, making it wetter and more humid, with an average humidity of 90%. For more detailed insights, check the St Austell weather in November.
In September, temperatures range from a minimum of 8°C (46°F) to a maximum of 24°C (76°F), with an average temperature of 15°C (60°F). The month experiences around 68 mm (2.7 in) of precipitation over 11 days, along with a relatively moderate humidity of 79%. In contrast, December brings a noticeable drop in temperatures, with a minimum of 1°C (35°F) and a maximum of 14°C (58°F), resulting in an average of just 9°C (48°F). This winter month also sees increased rainfall, totaling 120 mm (4.7 in) across 19 days, and a higher humidity level of 89%. For more detailed insights on December conditions, visit St Austell weather in December.
As September unfolds in St Austell, the weather begins to shift, bridging the warmth of summer and the coolness of autumn. This month typically features a mix of pleasant temperatures, with an average hovering around a comfortable 15°C, making it a perfect time for outdoor activities before the chill sets in. Unlike the drier summer months, September sees an uptick in precipitation, with rain gracing the region on about 11 days, resulting in a total of 68 mm. Despite the occasional showers, the overall humidity is high, lingering around 79%, adding a touch of moisture to the coastal air. For a deeper dive into the nuanced climate of this charming town, explore St Austell Climate.