Last updated: March 17, 2025
In September, Portreath experiences a delightful blend of mild temperatures and occasional rain. With a maximum high of 26°C (79°F) and an average of 15°C (60°F), this coastal town offers a comfortable climate for outdoor activities. Nighttime brings cooler air with a minimum temperature dipping to 8°C (47°F). While the month records 67 mm (2.6 in) of rainfall spread over 12 days, the humidity remains relatively high at 85%, creating a lush, vibrant landscape. Whether you’re strolling along the beach or exploring the nearby countryside, September in Portreath is characterized by its charming, albeit changeable, weather.
In September, Portreath, United Kingdom, experiences a delightful transition from summer to autumn, with minimum temperatures around 8°C (47°F) and averages reaching a comfortable 15°C (60°F). As the month progresses, daytime highs can soar to 26°C (79°F), reflecting the lingering warmth of the season. This gradual shift is notable, as September marks one of the last opportunities to enjoy pleasant weather before autumn sets in more fully. With cooler mornings and balmy afternoons, it’s the perfect time for coastal walks and outdoor adventures, capturing the beauty of this charming seaside village as it begins to embrace the crispness of fall.
In September, Portreath experiences a moderate level of precipitation, with 67 mm (2.6 in) of rain falling over 12 days. This marks a slight increase from the drier summer months, like August, which recorded 62 mm. The trend of rising rainfall continues as the region transitions into autumn, preparing for the wetter months ahead; notably, October's precipitation leaps to 118 mm (4.6 in). While September still offers a mix of sunny spells and occasional showers, it serves as a precursor to the increasingly damp weather that characterizes later months, emphasizing the area's shift from summer warmth to autumn chill. As fall approaches, residents can anticipate not just higher rainfall totals, but also an increase in the frequency of rainy days, with November set to be one of the wettest months of the year.
As summer transitions to autumn in Portreath, the humidity in September settles at a comfortable 85%. This figure reflects a slight dip from the season's peak in July and August, where humidity reached 87% and 86%, respectively. Overall, September marks a continuation of the region's trend towards higher humidity that begins in the spring months, peaking in the summer. However, as the year progresses towards winter, the humidity is set to stabilize around 85% in both October and November. This consistent moisture contributes to the lush coastal beauty of Cornwall, making Portreath a vibrant destination year-round.
In September, the UV Index in Portreath, United Kingdom, settles at 6, marking a return to the high exposure category. As the summer months fade, this level of UV radiation demands attention, with a burn time of just 25 minutes for unprotected skin. Compared to the peak index of 9 seen in June, there’s a slight decrease, yet it remains crucial for residents and visitors to take precautions. The trend throughout the year shows a progression from low levels in the winter months to a significant uptick during summer, and while September still offers pleasant weather, it brings with it a reminder to stay vigilant against sunburn. For more detailed information on UV levels throughout the year, check out Portreath UV Index.
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As summer gently transitions into autumn, September in Portreath offers a delightful blend of warmth and sunshine, with 329 hours of sunlight illuminating the coastline. Though cooler days are on the horizon, September maintains a significant amount of sunshine, trailing behind the peak of summer's 427 hours in July and 391 hours in August. Notably, this month experiences a consistent decline from summer, but still shines brighter than the approaching months of October and November, which see a substantial drop to 261 and 154 hours respectively. This gradual shift in sunlight serves as a beautiful reminder of the changing seasons, making September a perfect time to enjoy the stunning beaches and coastal walks in Portreath before the winter chill sets in.
September in Portreath, United Kingdom, offers a moderate chance of sunny weather, sitting at 31%—a slight improvement compared to the summer months. As the year transitions from the warm embrace of August, where the likelihood of sunshine dips to 30%, September stands as a bridge to autumn, revealing a subtle uptick in sunny prospects. This trend reflects a broader shift, as sunshine chances generally rise from the gloomy depths of winter, peaking in April before beginning a gradual decline. Although September may not guarantee uninterrupted sunshine, it still retains a favorable position in the sun-drenched spectrum of the year, making it an appealing time for outdoor adventures and beach strolls in Portreath.
As summer fades into autumn, September in Portreath, United Kingdom, offers a gentle transition in daylight duration, with approximately 12 hours of sunlight. This marks a gradual decline from the sun-drenched heights of June, which boasts a remarkable 16 hours of daylight. Following a vibrant summer, the sunlight begins to wane in September, hinting at the shorter days to come. The trend of decreasing daylight continues into October, where the long shadows of autumn start to settle in with just 10 hours of daylight. This month serves as a reminder of the cyclical nature of seasons in Portreath, balancing the brilliance of May's 15 hours and the cozy charm that comes with the shortening days of the latter half of the year.
As September rolls into Portreath, the gentle whispers of the wind reflect a notable trend in the region's coastal climate. With an average wind speed of 4.4 m/s (10 mph), this month marks a slight decline from the breezier summer months, where winds peaked in July and August. This transition signals the end of summer's playful gusts, paving the way for a shift towards the more invigorating autumn breezes. The cooler September air, paired with these milder winds, creates a refreshing atmosphere, perfect for seaside strolls and enjoying the changing landscape. As the months progress, the wind speeds will gradually begin to pick up again, hinting at the seasonal changes that lie ahead.
The weather in Portreath 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 Portreath and find detailed weather information for every month.
In September, temperatures range significantly from a chilly 8°C (47°F) at night to a warm 26°C (79°F) during the day, averaging around 15°C (60°F). The month experiences 67 mm (2.6 in) of precipitation over 12 days, and humidity levels are relatively high at 85%. In contrast, January sees much cooler temperatures, with minimums dropping to 0°C (32°F) and daily highs averaging only 14°C (58°F), resulting in an overall average of 8°C (46°F). Precipitation is slightly higher at 70 mm (2.8 in) over the same number of days, and humidity remains relatively constant at 81%. For those interested in a more detailed overview, you can explore Portreath weather in January.
September and February present contrasting weather patterns. In September, temperatures range from a mild 8°C (47°F) at night to a warm 26°C (79°F) during the day, boasting an average of 15°C (60°F). The month sees approximately 67 mm (2.6 in) of rainfall over 12 days, with a humidity level of 85%. In stark contrast, February experiences colder conditions, with temperatures dropping to a minimum of -2°C (28°F) and a maximum of 14°C (58°F), averaging around 8°C (47°F). This month receives more precipitation at 85 mm (3.4 in) spread over 16 days, while humidity remains relatively consistent at 84%. For more details on February weather, you can check this link: Portreath weather in February.
In comparing the weather of September and March, notable differences emerge. September typically experiences milder temperatures, ranging from a minimum of 8°C (47°F) to a maximum of 26°C (79°F), with an average of 15°C (60°F). In contrast, March is considerably cooler, with temperatures swinging from as low as -4°C (26°F) to a maximum of 16°C (61°F) and averaging just 9°C (48°F). Precipitation levels are also noteworthy; while September sees 67 mm (2.6 in) of rain over 12 days, March is wetter with 84 mm (3.3 in) spread across 17 days. Humidity levels are similar, hovering around 85% in September and slightly lower at 83% in March. For a deeper look into the specifics of March weather, you can visit Portreath weather in March.
In comparing the weather of September and April, September typically offers a warmer climate, featuring an average temperature of 15°C (60°F) with maximums reaching 26°C (79°F). In contrast, April has a cooler average temperature of 10°C (50°F) and tops out at 20°C (68°F). Both months experience notable humidity, with September at 85% and April slightly lower at 84%. Additionally, September tends to see more rainfall, receiving 67 mm (2.6 in) over 12 days, compared to April's 50 mm (2.0 in) across 9 days. For a more detailed look at April's climate, you can visit Portreath weather in April.
In comparing the weather of September and May, we see notable differences in temperature and precipitation patterns. September typically features a wider temperature range, with minimums around 8°C and maximums reaching up to 26°C, providing a warm average of 15°C. In contrast, May starts cooler, with temperatures ranging from a minimum of 4°C to a maximum of 22°C, resulting in an average of 12°C. Both months experience similar precipitation levels, around 65-67 mm, and an equivalent number of rainy days (12). Interestingly, both months share the same humidity level of 85%. For more details on this month's weather specifically in Portreath, you can check Portreath weather in May.
When comparing the weather in September and June, both months exhibit similar temperature ranges, with minimums at 8°C (47°F) and maximums reaching around 26°C (79-80°F). The average temperatures are closely aligned, hovering around 15°C (59-60°F). However, September tends to be slightly drier, receiving 67 mm (2.6 in) of precipitation over 12 days, compared to June’s 82 mm (3.2 in) across 13 days. Humidity levels remain comparable, with September at 85% and June slightly higher at 86%. For more detailed information about June weather, you can visit Portreath weather in June.
In comparing the weather between July and September, both months experience similar maximum temperatures around 26°C (79°F), but September tends to be slightly cooler overall, with minimum temperatures dropping to 8°C (47°F) compared to July's 11°C (52°F). The average temperature in July is notably warmer at 17°C (63°F), whereas September averages 15°C (60°F). Precipitation levels are almost identical, with September receiving 67 mm (2.6 in) over 12 days and July accumulating the same amount over just 11 days. Humidity is also marginally higher in September at 85%, versus July's 87%. For more detailed information, you can check Portreath weather in July.
In comparing the weather between August and September, September tends to be slightly cooler with average temperatures ranging from a minimum of 8°C (47°F) to a maximum of 26°C (79°F), compared to August's minimum of 11°C (53°F) and maximum of 24°C (75°F). While both months experience notable humidity, September has a marginally lower average at 85% versus August's 86%. Interestingly, September sees a bit more precipitation at 67 mm (2.6 in) across 12 days, while August has 62 mm (2.4 in) over 13 days. For those looking to explore more about the weather specifics in August, please visit Portreath weather in August.
September marks the transition from summer to fall, with temperatures ranging from a comfortable minimum of 8°C (47°F) to a pleasant maximum of 26°C (79°F) and an average of 15°C (60°F). However, it experiences some rainfall, totaling 67 mm (2.6 in) across about 12 days, and maintains a high humidity level of 85%.
In contrast, October brings a notable drop in temperatures, with minimums dipping to 2°C (37°F) and maximums only reaching up to 19°C (67°F), resulting in an average of 13°C (55°F). Rainfall increases significantly in October, accumulating to 118 mm (4.6 in) over approximately 15 days, while humidity remains steady at 85%. For more detailed insights into the weather patterns, check out Portreath weather in October.
September typically offers more pleasant weather compared to November. With average temperatures reaching up to 15°C (60°F) and maximums hitting 26°C (79°F), September is warmer and drier, experiencing only 67 mm (2.6 in) of precipitation over about 12 days. In contrast, November sees a significant drop in temperatures, averaging at 10°C (51°F) with highs around 16°C (61°F) and lows dipping to 2°C (37°F). Additionally, November is wetter, with 100 mm (3.9 in) of rain spread over 18 days, though the humidity remains relatively consistent at 82%. For more details, visit Portreath weather in November.
In comparing the weather between September and December, we see notable differences in temperature and precipitation patterns. September generally enjoys milder conditions, with average temperatures ranging from a minimum of 8°C (47°F) to a maximum of 26°C (79°F), while December temperatures are chillier, averaging between 2°C (36°F) and 14°C (58°F). Additionally, September experiences less rainfall, with 67 mm (2.6 in) falling over 12 days, compared to December's significantly higher precipitation of 123 mm (4.8 in) over 20 days. Humidity levels remain relatively high in both months, at 85% in September and 80% in December. For a detailed look at December weather trends, you can visit Portreath weather in December.
As summer gracefully transitions into autumn, September in Portreath captivates with its unique weather charm. While the warmth of 26°C (79°F) still lingers on some days, the average dips to a more moderate 15°C (60°F), inviting cozy layers for evening strolls along the beach. The month also brings a shift in atmosphere, with 85% humidity and 67 mm of precipitation over 12 days, creating a refreshing coastal experience. This blend of warmth and cool breezes sets September apart from the hotter summer months, making it a delightful time to explore the scenic beauty of Portreath. For a deeper dive into the area's atmospheric patterns, you can visit the Portreath Climate page.