September Weather in Newquay, United Kingdom

Last updated: March 17, 2025

In September, Newquay experiences a delightful climate with temperatures ranging from a pleasant 7°C (44°F) at night to a warm 27°C (81°F) during the day, offering a comfortable average of 15°C (59°F). This month sees a typical precipitation of 77 mm (3.0 in) over approximately 13 days, leading to a moderately humid atmosphere with levels reaching 85%. Perfect for outdoor activities, September is an ideal time to explore the stunning coastal scenery while enjoying the mild weather.

September Temperature in Newquay

As summer transitions to autumn, September in Newquay offers a delightful blend of warmth and comfort, with temperatures ranging from a pleasant 7°C (44°F) at night to a striking 27°C (81°F) during the day. The average temperature settles around 15°C (59°F), making this month ideal for those looking to soak up the last rays of summer while enjoying the stunning coastal scenery. Unlike the chill that creeps in during later months, September retains a warmth reminiscent of the hotter summer days, allowing for outdoor activities and beach strolls. This month reflects a gradual cooling trend, signaling the shift towards cooler autumn days, but still showcases the lingering warmth of summer's end.

September Weather in Newquay: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Newquay, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec454647505459626159555048
Data source: Temperature data for Newquay generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Newquay

September in Newquay, United Kingdom, brings an average precipitation of 77 mm (3.0 in), accompanied by roughly 13 rainy days. This marks a slight increase compared to the drier months of April and May, yet it remains lower than the subsequent October rains. Notably, September's weather reflects a transition, with lingering summer warmth giving way to the onset of autumn showers. As the month unfolds, visitors can expect a mix of sunny spells interspersed with refreshing rainfall, characteristic of the region's variable climate.

September Precipitation Trends in Newquay

The chart displays monthly precipitation patterns in Newquay, with values for each month alongside September's data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September's conditions compare to those of other months.
JanFebMarAprMayJunJulAugSepOctNovDec748689486793727377119102131
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Newquay

As summer wanes and September settles in Newquay, the humidity remains notably high at 85%, reflecting a trend that characterizes the coastal town's climate. Following the peak of 87% in July, the humidity tapers slightly but continues to maintain a comfortable level for an oceanic atmosphere. This slight dip from August's 86% allows for a refreshing transition into autumn, while still retaining the characteristic moisture that influences the region’s vibrant coastal ecosystems. Overall, September's humidity is consistent with the year’s pattern, emphasizing Newquay's generally humid conditions that embrace its maritime climate.

September Average Humidity in Newquay

This chart illustrates the average monthly humidity levels in Newquay, with September's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how September's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec81%84%83%84%85%86%87%86%85%85%82%80%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Newquay

In September, Newquay experiences a UV Index of 6, placing it within the high exposure category. This marks a gradual decline from the peak summer months, where June and July boast very high levels of UV radiation. Despite the drop, the burn time remains notable at 25 minutes, reminding sun-seekers to remain vigilant in their sun protection. As the year transitions into autumn, it’s essential to stay informed about changing UV conditions, making September a perfect time for outdoor adventures while still prioritizing skin safety. For more information, check out the detailed Newquay UV Index.

Maximum UV Index Levels in Newquay for September

The chart shows the monthly maximum UV Index (UVI) for Newquay in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec224679876421
Data source: Newquay September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

September Sunshine in Newquay

September in Newquay, United Kingdom, shines with a delightful 329 hours of sunshine, marking a significant transition as summer begins to wane. With the peak of July boasting an impressive 427 hours, the golden glow of late summer allows for lingering beach days and warm evenings. Following August’s robust 391 hours, September still offers ample sunshine, providing a perfect backdrop for outdoor adventures. This month’s sun is a gentle reminder of the vibrant season ending, as October sees a dip to 261 hours. As daylight dims, September remains a cherished time, inviting visitors to soak up the last rays of summer while relishing the stunning coastal views Newquay has to offer.

Monthly Sunshine Duration in Newquay: September Highlighted

The September sunshine duration represents the total number of hours Newquay experiences direct sunlight during the month of September, excluding cloudy or obstructed periods. This chart compares the sunshine duration of September with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec96h159h238h355h410h409h427h391h329h261h154h119h
Data source: Newquay September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Newquay During September

In September, Newquay experiences a 31% chance of sunny weather, marking a transitional phase as summer gives way to autumn. This likelihood aligns closely with the overcast skies of the preceding months, particularly August and July, which boast 31% and 38% chances of sunshine, respectively. While April offers a brighter outlook at 52%, the trend shows a gradual decline in sunny days as the year progresses. Interestingly, the chances in September mirror the late summer months, suggesting that those seeking a sunlit escape still have a fair shot at warmth and light before the cooling grip of autumn takes hold.

Percentage of Sunny Days in September in Newquay

The chart illustrates the percentage of sunny days in Newquay throughout the year, with September highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Newquay experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec25%26%33%52%35%26%38%32%31%24%21%20%
Data source: Newquay September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Newquay in September

In September, Newquay, United Kingdom, experiences a gradual shift as daylight begins to wane, offering around 12 hours of sunlight. This marks a continuation from the vibrant summer months of June and July, which basked in 16 and 15 hours of daylight respectively. As the warm glow of summer fades into autumn, the days shorten, moving from the lush brightness of 15 hours in May to the softer tones of September. Following this trend, daylight further declines in October, settling back to 10 hours. The rhythmic ebb and flow of sunlight not only reflects the changing seasons but also invites residents and visitors alike to relish in outdoor activities, savoring the last warm rays before the darker months set in.

Average Daylight Hours in Newquay for September

The chart illustrates the variation in daylight duration in Newquay throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec8h 32m10h 3m11h 55m13h 50m15h 30m16h 22m15h 54m14h 24m12h 33m10h 39m8h 57m8h 3m
Data source: Newquay daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Newquay

As September rolls into Newquay, the winds begin to soften, averaging a gentle 4.0 m/s (9 mph). This marks a noticeable decline from the summertime breezes, offering a calm respite before the autumn gales arrive. With the wind speeds tapering off from a peak in February at 6.8 m/s (15 mph) and fluctuating modestly throughout the year, September presents a serene stage for both locals and visitors. The transition into fall brings a tranquil atmosphere, ideal for leisurely beach walks and coastal exploration, while hinting at the brisk breezes that will soon return in October, when winds pick up to 5.6 m/s (13 mph) once again.

Average September Wind Speed in Newquay

The chart displays monthly wind speed patterns in Newquay, with values for each month shown alongside September's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how September's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec5.86.85.74.45.73.94.24.64.0 m/s5.65.06.7
Data source: Newquay September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Newquay Compares to Other Months

The weather in Newquay 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 Newquay and find detailed weather information for every month.

September and January exhibit strikingly different weather patterns. In September, temperatures range from a mild 7°C (44°F) to a pleasant 27°C (81°F), with an average of 15°C (59°F) and relatively high humidity at 85%. Rainfall also sees significant activity, with about 77 mm (3.0 in) over 13 days. In contrast, January brings cooler temperatures, with lows dipping to -1°C (30°F) and highs reaching only 14°C (58°F), averaging around 7°C (46°F). The precipitation remains similar to September at 74 mm (2.9 in) over 13 days, but the humidity is slightly lower at 81%. For more detailed information, you can visit Newquay weather in January.

In comparing the weather of September and February, notable differences emerge. September features a milder temperature range, with minimums around 7°C (44°F) and maximums reaching 27°C (81°F), while February experiences much colder conditions, with minimums dropping to -3°C (27°F) and maximums peaking at 15°C (60°F). Precipitation levels are somewhat similar; September sees around 77 mm (3.0 in) over 13 days, while February has slightly more rainfall at 86 mm (3.4 in) across 16 days. Humidity remains fairly consistent between the two months, with September at 85% and February at 84%. For a deeper dive into February weather specifics, check out Newquay weather in February.

When comparing the weather in September and March, notable differences in temperature and precipitation emerge. September boasts milder temperatures, with a minimum of 7°C (44°F) and a maximum of 27°C (81°F), resulting in an average temperature of 15°C (59°F). In contrast, March is considerably cooler, experiencing a minimum of -4°C (24°F) and a maximum of 18°C (64°F), with an average temperature of only 8°C (47°F). In terms of precipitation, September sees 77 mm (3.0 in) over approximately 13 days, while March has slightly higher precipitation at 89 mm (3.5 in) spread over 17 days. Humidity levels are relatively consistent, with September at 85% and March at 83%. For a more detailed look at conditions during this time, you can visit Newquay weather in March.

September and April present distinct differences in weather patterns. In September, temperatures range from a minimum of 7°C (44°F) to a maximum of 27°C (81°F), with an average of 15°C (59°F). This month also sees higher precipitation levels, totaling 77 mm (3.0 in) over approximately 13 days, and the humidity is notably high at 85%. In contrast, April is cooler, with temperatures varying from a minimum of 1°C (34°F) to a maximum of 21°C (71°F) and an average of 10°C (50°F). Precipitation in April is lower at 48 mm (1.9 in) spread across about 9 days, with humidity slightly lower at 84%. For more detailed information, check out the Newquay weather in April.

When comparing the weather in September and May, September tends to be warmer overall. With a minimum temperature of 7°C (44°F) and an average of 15°C (59°F), it provides a pleasant backdrop for outdoor activities, especially with a maximum reaching 27°C (81°F). In contrast, May starts cooler, with minimum temperatures at 3°C (38°F) and an average of 12°C (54°F), peaking at 23°C (74°F). Although both months share the same number of rainy days at 13, September has slightly higher precipitation at 77 mm (3.0 in) compared to 67 mm (2.6 in) in May. Humidity remains consistent at 85% in both months. For more specific details, you can check Newquay weather in May.

When comparing the weather in September to that of June, both months feature similar temperature ranges, with minimums around 7°C (44°F), averages at 15°C (59°F), and maximums peaking at 27°C (81°F). However, September experiences slightly less precipitation, accumulating 77 mm (3.0 in) over 13 days compared to June’s 93 mm (3.6 in) across 14 days. Additionally, humidity levels are quite comparable, with September at 85% and June at 86%. For more detailed insights about June weather, you can visit Newquay weather in June.

When comparing the weather in September and July, both months exhibit relatively mild temperatures, but September tends to be slightly cooler. In July, the minimum temperature averages around 9°C (49°F) while September starts at a cooler 7°C (44°F). The average temperatures in both months are close, with September averaging 15°C (59°F) and July at 17°C (63°F). Interestingly, both months peak at a maximum temperature of 27°C (81°F in September and 82°F in July). Rainfall is slightly higher in September, with 77 mm (3.0 in) over 13 days compared to 72 mm (2.8 in) over 11 days in July. Humidity levels are also comparable but a bit higher in July at 87%, while September holds steady at 85%. For a more detailed look at July's weather, visit Newquay weather in July.

In comparing the weather between August and September, we see notable differences in temperature and precipitation patterns. September experiences slightly cooler temperatures, with a minimum of 7°C (44°F) and a maximum of 27°C (81°F), whereas August has a minimum of 10°C (51°F) and a maximum of 25°C (77°F). Precipitation levels are similar between the two months, with September recording 77 mm (3.0 in) over 13 days, compared to August's 73 mm (2.9 in) over 15 days. Additionally, humidity remains high in both months, with September at 85% and August slightly higher at 86%. For a more detailed look at August weather specifically, you can check Newquay weather in August.

In September, temperatures range from a mild 7°C (44°F) at night to a warm 27°C (81°F) during the day, with an average temperature of 15°C (59°F). However, this month also sees considerable rainfall, totaling 77 mm (3.0 in) over approximately 13 days, while humidity remains high at 85%. In contrast, October brings a noticeable drop in temperatures, with minimums reaching 0°C (32°F) and maximums peaking at 20°C (68°F), resulting in an average of 13°C (55°F). Rainfall increases to 118 mm (4.7 in), spread over 16 days, though humidity remains consistent at 85%. For more details about the weather specifics in October, you can refer to Newquay weather in October.

September tends to be warmer than November, with temperatures ranging from a minimum of 7°C (44°F) to a maximum of 27°C (81°F) and an average of 15°C (59°F). In contrast, November experiences cooler temperatures, peaking at 16°C (61°F) and averaging around 10°C (50°F), with a minimum of just 1°C (34°F). While September sees 77 mm (3.0 in) of rainfall over 13 days, November receives a bit more precipitation at 102 mm (4.0 in) across 18 days. Despite the increased rain in November, humidity levels remain relatively similar, with September at 85% and November slightly lower at 82%. For more details, you can check Newquay weather in November.

September and December offer markedly different weather experiences. In September, temperatures range from a minimum of 7°C (44°F) to a maximum of 27°C (81°F), yielding a pleasant average of 15°C (59°F). The month sees about 77 mm (3.0 in) of precipitation over approximately 13 days, accompanied by a high humidity level of 85%. In contrast, December brings much cooler temperatures, with a low of 1°C (34°F) and a high of 14°C (57°F), resulting in an average of only 9°C (48°F). Rainfall increases significantly in December, with 131 mm (5.1 in) spread over 21 days, and humidity slightly decreases to 80%. For more detailed insights, you can check Newquay weather in December.

Compare Newquay's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Newquay

September in Newquay ushers in a delightful transition from the warmth of summer to the cooler embrace of autumn. With maximum temperatures reaching a pleasant 27°C, the month still offers ample opportunities for outdoor activities, though the average dips to a mild 15°C. The increase in humidity at 85% and precipitation over 13 days signal the onset of changing weather patterns, making September distinct from the drier, sunnier days of summer. Visitors can enjoy both the remnants of warm beach days and the fresh, crisp air that hints at the seasonal shift. For more insights into Newquay's weather patterns throughout the year, check out Newquay Climate.