Last updated: March 17, 2025
September in Penzance, United Kingdom, offers a delightful blend of mild weather and coastal charm. With maximum temperatures reaching 22°C (71°F) and an average of 16°C (60°F), the warmth invites locals and visitors alike to explore the scenic surroundings. However, be prepared for some rain, as the month sees approximately 69 mm (2.7 in) of precipitation over 12 days, complemented by a notable humidity of 84%. This combination creates a refreshing atmosphere, perfect for enjoying Penzance's vibrant culture and breathtaking landscapes. Whether you’re strolling along the beaches or diving into local festivals, September promises a memorable experience in this picturesque seaside town.
In September, Penzance begins to transition into autumn, yet it still enjoys the warmth of late summer. With a minimum temperature of 11°C (52°F) and an average of 16°C (60°F), the days can feel pleasantly mild. Highs can reach 22°C (71°F), making it one of the most comfortable months of the year to explore the coastal charms of this picturesque town. The steady increase in temperatures from earlier months reflects a gradual shift; after the cooler snap of spring, the warmth of summer lingers just a little longer here. As you stroll along the seafront, the comforting, mild climate adds an inviting touch, blending the tail end of summer with the unfolding hues of autumn.
September in Penzance sees a moderate precipitation amount of 69 mm (2.7 in) over about 12 days, marking a gentle transition from the summer months. This pattern reflects a slight uptick in rainfall compared to August, which experienced 59 mm (2.3 in) of rain, hinting at the wetter conditions to come in the autumn. As the month progresses, the mix of sunny days and occasional showers serves to reinvigorate the lush landscapes, maintaining the vibrant coastal charm. Looking ahead, October's dramatic rise to 131 mm (5.2 in) reveals a notable shift, with rain becoming more frequent and persistent, as the region braces for the more pronounced autumnal deluge.
September in Penzance, United Kingdom, greets residents and visitors with a moderate humidity level of 84%, slightly lower than the consistently high figures observed over the summer months. As the season transitions, this gradual dip in humidity marks the beginning of a shift toward autumn, following the steady 85% experienced from June through August. Throughout the year, Penzance exhibits a generally humid climate, peaking in May and June, and maintaining a comfortable yet moist atmosphere that lingers until October. This trend highlights the rich coastal influences that characterize the region, offering a unique blend of warmth and freshness that is both inviting and invigorating as summer gives way to fall.
As September rolls in Penzance, the UV Index peeks at a high level of 6, indicating it's a great time to enjoy the sun while still being cautious. Following the intense summer months of very high UV levels, where burn times dipped to just 15 minutes, the sun’s intensity eases slightly. However, with a burn time of 25 minutes, it’s essential to remain vigilant with sun protection, especially during midday. This month marks a transition into milder exposure conditions, yet UV strength remains significant compared to the cooler months ahead. For detailed information on UV trends throughout the year, visit Penzance UV Index.
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As summer bows out, September in Penzance offers a delightful mix of warmth and sunlight, basking in an impressive 330 hours of sunshine. This month showcases a graceful transition from the vibrant light of peak summer, where July dazzles with 426 hours, to the calmer, more reserved beauty of autumn, highlighted by October’s decline to 261 hours. The steady reduction in daylight from the sun-soaked days of July and August gently eases into the cozy embrace of fall, while September still proudly retains a rich glow reminiscent of the summer's lingering warmth. As the days grow shorter, this month invites you to relish the brilliant yet softer light, making it the perfect time to explore Penzance's charming coastal landscape.
In Penzance, September offers a promising chance for sunny weather, with about 33% likelihood of sunshine—a slight dip from August's 34% but still in line with the summer season's vibrant atmosphere. As summer transitions into autumn, this month marks a notable peak in sunny days compared to the chilled, damp air of October at 31% and the gloomy days typical of the winter months. With April being the sunniest spring month at 51%, it's evident that while September may not be the standout for sunshine, it retains a commendable balance, allowing residents and visitors alike to enjoy the beautiful coastal charms of Penzance before the colder months set in.
As summer fades, September in Penzance welcomes a transition marked by a reduction in daylight, offering around 12 hours of light each day. This shift follows the sunniest months of June and July, when the long, bright days reached their peak at 16 hours. August still held onto a generous 14 hours of daylight, but September signifies a gentle descent into autumn, with days growing shorter as the nights begin to lengthen. Observing this pattern, one can appreciate how the rhythm of daylight in Penzance ebbs and flows with the seasons, creating a beautiful tapestry of light that sets the tone for each month.
As summer gently transitions to autumn in Penzance, September brings a notably calm breeze, with an average wind speed of 5.4 m/s (12 mph). This marks a decrease from the summer months, where winds hovered around 5.6 m/s. It’s a time when the coastal town enjoys the tail end of warm weather, complemented by the softening winds. As we look ahead, wind speeds begin to rise again in October, with an increase to 7.1 m/s, foreshadowing the more blustery conditions characteristic of late autumn. Overall, September’s tranquil winds create a serene atmosphere, perfect for enjoying the stunning scenery of the Cornish coastline before the brisker gales set in.
The weather in Penzance 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 Penzance and find detailed weather information for every month.
In comparison to September, January experiences cooler temperatures, with minimums averaging 4°C (39°F) compared to 11°C (52°F) in September. The average temperature drops to 9°C (48°F) in January, while September maintains a more pleasant average of 16°C (60°F). Both months see notable precipitation, but January receives slightly more at 81 mm (3.2 in) over 14 days, whereas September has 69 mm (2.7 in) over 12 days. Humidity levels are relatively similar, with September at 84% and January slightly lower at 81%. For a more detailed overview, check out Penzance weather in January.
September and February present stark contrasts in weather patterns. In September, temperatures are generally milder, with a minimum of 11°C (52°F) and an average of 16°C (60°F), peaking at 22°C (71°F). This month sees 69 mm (2.7 in) of precipitation spread over 12 days and boasts a relatively high humidity of 84%. In contrast, February experiences cooler conditions, with temperatures dropping to a minimum of 0°C (32°F) and averaging around 9°C (48°F), maxing out at just 13°C (55°F). This month is also wetter, with 96 mm (3.8 in) of rainfall over 16 days and slightly lower humidity at 83%. For a detailed look at February weather in Penzance, you can visit Penzance weather in February.
In comparing the weather between September and March, notable differences emerge. September boasts a mild average temperature of 16°C (60°F), with maximums reaching 22°C (71°F), while March sees a significant drop, with an average of just 9°C (48°F) and a maximum of only 13°C (56°F). Additionally, September experiences lower precipitation levels at 69 mm (2.7 in) over 12 days, compared to March, which has a higher total of 88 mm (3.5 in) across 16 days, indicating wetter conditions. Humidity levels are fairly similar, with September at 84% and March slightly lower at 82%. For more specific insights on March weather, you can visit Penzance weather in March.
September and April showcase notably different weather patterns. In September, temperatures range from a minimum of 11°C (52°F) to a maximum of 22°C (71°F), with an average temperature of 16°C (60°F). This month experiences more precipitation, totaling 69 mm (2.7 in) over approximately 12 days, and the humidity levels remain high at 84%. In contrast, April brings cooler temperatures, with a minimum of 4°C (40°F) and a maximum of 16°C (61°F), averaging around 10°C (50°F). Rainfall is also lower in April, with 44 mm (1.7 in) spread over 8 days and slightly less humidity at 83%. For more detailed information about April weather, you can visit Penzance weather in April.
In comparing the weather between September and May, September tends to be warmer, with average temperatures ranging from a minimum of 11°C (52°F) to a maximum of 22°C (71°F), while May sees lower temperatures, with an average range of 7°C (45°F) to 17°C (64°F). Both months experience similar levels of precipitation, with September contributing 69 mm (2.7 in) over 12 days and May slightly less at 64 mm (2.5 in) across 11 days. Humidity levels are quite close, with September at 84% and May at 85%. For more details on the May weather, you can refer to Penzance weather in May.
In comparing the weather of September and June, both months exhibit relatively mild temperatures, with September having slightly higher averages. September's minimum temperature is 11°C (52°F) compared to June's 10°C (51°F), and the average is around 16°C (60°F) in September, while June's average is 15°C (59°F). Although September boasts a maximum temperature of 22°C (71°F), June closely follows at 21°C (70°F). Precipitation levels are quite similar, with September receiving 69 mm (2.7 in) and June just a bit higher at 74 mm (2.9 in), both spread over approximately 12 days. Humidity levels are also comparable, standing at 84% in September and slightly higher at 85% in June. For more detailed information on June weather, visit Penzance weather in June.
September and July showcase similar temperature ranges, with July having a slightly warmer average of 17°C (62°F) compared to September's 16°C (60°F). Both months experience maximum temperatures around 22°C (72°F), yet September starts to cool down with a minimum of 11°C (52°F), while July's minimum is a bit higher at 13°C (55°F). Precipitation levels are nearly identical, with September receiving 69 mm (2.7 in) over 12 days and July seeing 68 mm (2.7 in) across 10 days. Humidity levels are also comparable, with September at 84% and July slightly higher at 85%. For more details on July weather, check out Penzance weather in July.
In comparing the weather between August and September, we see a slight decline in temperature as September begins to cool down. September has a minimum temperature of 11°C (52°F) and an average of 16°C (60°F), while August experiences slightly warmer conditions with a minimum of 13°C (56°F) and an average of 17°C (62°F). The maximum temperatures also show September peaking at 22°C (71°F), compared to August's highest of 20°C (69°F). Precipitation levels increase in September, totaling 69 mm (2.7 in) over 12 days, which is a slight rise from August's 59 mm (2.3 in) also over 12 days. Humidity remains relatively similar between the two months, with September at 84% and August at 85%. For more detailed information, you can refer to Penzance weather in August.
September and October bring noticeable shifts in weather patterns. In September, temperatures are milder, with a minimum of 11°C (52°F) and an average of 16°C (60°F), while October sees cooler conditions, with a minimum temperature dropping to 5°C (42°F) and an average of 13°C (56°F). Precipitation increases significantly in October, totaling 131 mm (5.2 in) over 16 days, compared to September's 69 mm (2.7 in) across 12 days. Despite the drop in temperature and increased rainfall, humidity remains consistent at 84% for both months. For more information, you can check Penzance weather in October.
September typically offers milder weather compared to November. With average temperatures ranging from a minimum of 11°C (52°F) to a maximum of 22°C (71°F), September remains relatively warm, while November sees a drop, with averages between 5°C (42°F) and 16°C (60°F). Additionally, September experiences less rainfall, totaling 69 mm (2.7 in) over 12 days, whereas November has noticeably higher precipitation levels at 115 mm (4.5 in) across 19 days. Despite the cooler temperatures in November, the humidity remains fairly consistent, at 82% compared to September’s 84%. For more details on November weather, visit Penzance weather in November.
In September, the weather is generally milder, with average temperatures ranging from a minimum of 11°C (52°F) to a maximum of 22°C (71°F). The month sees approximately 69 mm (2.7 in) of precipitation over around 12 days, accompanied by a high humidity of 84%. In contrast, December brings cooler temperatures, with a minimum of 5°C (42°F), an average of 10°C (51°F), and a maximum of 14°C (57°F). Precipitation significantly increases to 138 mm (5.4 in) over about 21 days, and while humidity slightly decreases to 81%, the overall weather feels considerably more damp and chilly. For more on winter conditions, check Penzance weather in December.
As September unfolds in Penzance, the weather begins to shift, offering a delightful blend of mild warmth and refreshing sea breezes. Unlike the peak summer months, where temperatures soar, September's averages hover around a comfortable 16°C, allowing for pleasant outdoor adventures without the summer heat. However, it is also the start of a wetter season, with precipitation making an appearance on about half of the days this month. The high humidity of 84% adds a touch of crispness to the air, emphasizing the transition into autumn. For those looking to explore the unique characteristics of Penzance's climate, be sure to visit Penzance Climate for more insights.