Last updated: March 17, 2025
In September, Hay, United Kingdom, experiences a delightful blend of warm and cool weather, with maximum temperatures reaching 27°C (80°F), while the average temperature settles at a comfortable 13°C (55°F). As the month progresses, temperatures can dip to a minimum of 2°C (35°F), creating a refreshing contrast. However, expect occasional rainfall, with a total precipitation of 74 mm (2.9 in) over approximately 12 days, contributing to a relative humidity of 79%. This dynamic weather pattern makes September an ideal time to enjoy the scenic beauty of Hay as the landscape transitions into autumn.
In September, Hay, United Kingdom, bids farewell to summer with pleasantly mild temperatures. The month begins to usher in cooler days, featuring a minimum of 2°C (35°F) and an average temperature of 13°C (55°F). However, as the month progresses, it surprises with a peak maximum of 27°C (80°F), reminiscent of late summer warmth. This transition showcases a gradual shift from the warmth of August, where temperatures lingered around 15°C (59°F) on average and a consistent high of 28°C (83°F). As September unfolds, you can expect crisp mornings and balmy afternoons, marking the perfect time for outdoor activities amidst the changing foliage.
In September, Hay, United Kingdom, sees a moderate precipitation amount of 74 mm (2.9 in), making it one of the wetter months of the year, albeit less so than the deluge of October, which typically features 117 mm (4.6 in). With 12 days of rainfall, September maintains a balanced, albeit damp, environment as summer gives way to autumn. This month marks a subtle shift from the heavier rains of late summer, as indicated by August's 92 mm (3.6 in). While September’s precipitation levels are higher than the calmer spring months, they reflect a gradual increase leading into the peak rainy season, hinting at the changing atmospheric conditions typical of the transition to autumn in this part of the UK.
In September, Hay, United Kingdom, experiences a relative humidity of 79%, marking a subtle increase from the drier summer months of July and August, which recorded 70% and 73% respectively. This rise indicates a gradual shift as the region transitions into the more humid autumn season. Humidity levels, while lower than earlier winter months, reflect a pattern where early fall sees a slight uptick before entering the wet and chilly months ahead. As the year progresses towards October with its 89% humidity, September serves as a reminder of the impending shifts in weather, blending the remnants of summer's warmth with the first hints of autumn's embrace.
As September rolls in Hay, United Kingdom, the UV Index stands at a notable 6, categorizing the exposure level as high. This marks a slight decrease from the summer peak, yet it still signifies a cautionary level of sun exposure, necessitating protective measures. With a burn time of just 25 minutes, it's clear that even as autumn approaches, the sun can still be quite fierce. This trend showcases the transition from the hotter months, where the UV Index reached a very high 8 in both June and July, to a more moderate but still significant level. As you enjoy the early fall sunshine, remember to stay protected! For more details, check out the Hay UV Index.
UV Risk Categories
In September, Hay, United Kingdom enjoys a delightful 271 hours of sunshine, marking a graceful transition from the sun-soaked peak of summer. As daylight wanes following the luminous heights of July, which boasts a remarkable 384 hours, September still holds on to a considerable amount of sunlight, significantly more than the dreary winter months ahead. Compared to the vibrant spring months, where April and May shine with 294 and 368 hours respectively, September's sunshine serves as a warm reminder of summer’s lingering embrace. This month gently bridges the gap into autumn, laying the groundwork for the more muted light of October and November, which drop to 209 and 110 hours respectively, emphasizing the fleeting nature of these longer, sunlit days.
In Hay, United Kingdom, September offers a moderate 23% chance of sunny weather, which aligns with the trend seen throughout the late summer months. While the probability of sunshine dips slightly from August's 21%, it remains consistent compared to the preceding months. Notably, this marks a decline from the vibrant days of April, which boasts the sunniest disposition at 48%. Following the warmth of summer, September's weather hints at a transitional phase, where sunny days can still be enjoyed, but the likelihood is similar to that of March and July, suggesting a mix of lingering summer charm and the onset of autumnal chill. As you plan for your September outings, embrace the potential for both sun and delightful, temperate weather, as Hay navigates this seasonal shift.
As summer transitions into autumn, September in Hay, United Kingdom, marks a gentle decline in daylight, offering about 12 hours of sunlight each day. This month stands out as a bridge between the long, sun-soaked days of July and August, which bask in 16 hours of daylight, and the shorter days that follow in October with just 10 hours. The trend reveals a gradual tapering of daylight as the year progresses, with September providing a perfect balance of light and crispness, setting the stage for the cozy embrace of fall. As the foliage transforms and evenings grow darker, this month serves as a reminder of the fleeting summer days while ushering in the rich colors and cooler temperatures of autumn.
As summer transitions into autumn, September winds in Hay, United Kingdom, tend to be gentle, averaging around 2.9 m/s (7 mph). This slight decrease from the previous month's average reflects a notable trend: the wind speeds typically peak during the colder months, particularly January and October, where figures soar to 4.0 m/s (9 mph) and 4.2 m/s (9 mph), respectively. Following a generally calmer summer, the autumn breezes introduce a fresh, crisp feel to the air, setting the stage for the changing seasons. With September’s moderate winds, it's an ideal time for enjoying the serene beauty of the surroundings as nature begins its colorful transformation.
The weather in Hay 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 Hay and find detailed weather information for every month.
September weather features a wider temperature range, with minimums at 2°C (35°F) and maximums reaching 27°C (80°F), while January's temperatures are significantly lower, with a minimum of -8°C (18°F) and a maximum of 12°C (54°F). Both months see similar levels of precipitation, around 68-74 mm (2.7-2.9 in) over approximately 12 days, but January experiences a higher humidity level at 88% compared to September's 79%. This contrast highlights the transition from the moderate warmth of early autumn to the chill of mid-winter conditions. For more details on the January weather, visit Hay weather in January.
September and February exhibit stark contrasts in their weather patterns. September often brings milder temperatures, with a minimum of 2°C (35°F) and an average of 13°C (55°F), reaching a maximum of 27°C (80°F). This month experiences 74 mm (2.9 in) of precipitation over about 12 days, coupled with a humidity level of 79%. In contrast, February is much cooler, featuring a minimum temperature of -7°C (20°F) and an average of 5°C (41°F), peaking at 16°C (61°F). This month is also wetter, with 104 mm (4.1 in) of precipitation across 15 days and higher humidity at 88%. For a deeper dive into February's weather, check out Hay weather in February.
September and March present contrasting weather conditions. September typically enjoys milder temperatures, with averages around 13°C (55°F) and maximums reaching 27°C (80°F), while March experiences cooler conditions, averaging 6°C (42°F) with highs of only 19°C (66°F). Precipitation is more frequent in March, with 102 mm (4.0 in) over 16 days, compared to September's 74 mm (2.9 in) over 12 days. Additionally, March's humidity is slightly higher at 86%, compared to 79% in September. For those interested in more details, visit Hay weather in March.
In comparing the weather between September and April, notable differences emerge in temperature and precipitation. September tends to be warmer, with average temperatures ranging from a chilly 2°C (35°F) at night to a comfortable 27°C (80°F) during the day, while April experiences cooler conditions with temperatures dipping as low as -4°C (25°F) at night and peaking at 21°C (71°F). Additionally, September sees more rainfall overall, with a total of 74 mm (2.9 in) over 12 days, compared to April's 60 mm (2.4 in) spread across 9 days. Humidity levels are slightly higher in April at 84%, compared to 79% in September. For more detailed insights into April weather, you can check Hay weather in April.
When comparing the weather in September and May, there are some notable differences. September tends to be warmer, with average temperatures reaching 13°C (55°F) and a maximum of 27°C (80°F), while May has slightly cooler averages, with an average of 11°C (52°F) and a high of 25°C (76°F). Precipitation levels are also somewhat similar, with September receiving about 74 mm (2.9 in) over 12 days, compared to May's 88 mm (3.5 in) over 13 days. Humidity remains high in both months, hovering around 79% in September and 80% in May. For more detailed information on May weather, you can refer to Hay weather in May.
When comparing the weather in September to June, September tends to offer slightly warmer temperatures, with maximums reaching 27°C (80°F) compared to June's 28°C (82°F). However, September features a broader range of temperatures, with minimums dipping to 2°C (35°F) while June remains warmer at a minimum of 4°C (40°F). Both months are relatively humid, with September having a humidity level of 79% and June at 80%. In terms of precipitation, September sees 74 mm (2.9 in) over 12 days, while June experiences a slightly higher average of 86 mm (3.4 in) over 14 days. For more detailed information about June weather, you can explore Hay weather in June.
In comparing the weather patterns of September and July, we observe that September tends to be slightly cooler, with temperatures ranging from a minimum of 2°C (35°F) to a maximum of 27°C (80°F) and an average of 13°C (55°F). In contrast, July experiences warmer temperatures, with minimums of 5°C (41°F), an average of 16°C (61°F), and maximums up to 28°C (82°F). Both months received similar amounts of precipitation, with September recording 74 mm (2.9 in) and July slightly higher at 80 mm (3.1 in), yet both had rain on approximately 12 days. Humidity levels are also noteworthy, with September slightly more humid at 79% compared to July's 70%. For more details on July's weather, you can refer to Hay weather in July.
In September, the weather tends to be slightly cooler compared to August, with minimum temperatures dropping to 2°C (35°F) and average temperatures at 13°C (55°F). While August boasts a minimum of 5°C (41°F) and an average of 15°C (59°F), both months experience a similar maximum temperature with September peaking at 27°C (80°F) and August at 28°C (83°F). Precipitation levels are also notable; September receives 74 mm (2.9 in) over 12 days, which is less than August's 92 mm (3.6 in) across 13 days. Humidity is slightly higher in September at 79%, compared to 73% in August, making September feel a bit more muggy. For a detailed look at August weather, you can check Hay weather in August.
In September, temperatures generally range from a minimum of 2°C (35°F) to a maximum of 27°C (80°F), with an average of 13°C (55°F). The month sees about 74 mm (2.9 in) of precipitation over approximately 12 days, accompanied by a humidity level of 79%.
In contrast, October experiences cooler temperatures, with a minimum of -3°C (27°F) and a maximum of 21°C (70°F), and an average of 10°C (50°F). This month also brings increased precipitation, totaling 117 mm (4.6 in) across 14 days, and a rise in humidity to 89%. For more detailed information, you can check Hay weather in October.
September typically enjoys milder temperatures with a range from a minimum of 2°C (35°F) to a maximum of 27°C (80°F), making it feel much warmer on average at around 13°C (55°F). The month also experiences relatively moderate precipitation, totaling 74 mm (2.9 in) over 12 days, with humidity levels around 79%. In contrast, November sees cooler temperatures, with a minimum of -4°C (25°F) and a maximum of 15°C (59°F), averaging just 7°C (44°F). The amount of precipitation increases to 98 mm (3.9 in) across 15 days, and humidity rises to 90%, contributing to a much more damp and chilly atmosphere. For more detailed insights, check out Hay weather in November.
Comparing the weather in September and December reveals significant shifts as the seasons change. In September, temperatures range from a mild 2°C (35°F) to a warm max of 27°C (80°F), with an average of 13°C (55°F). The month sees approximately 74 mm (2.9 in) of precipitation over 12 days and maintains a humidity level of 79%. In contrast, December presents much colder conditions, with temperatures dipping to a minimum of -9°C (16°F) and peaking at just 12°C (54°F), averaging around 5°C (42°F). Additionally, December experiences higher rainfall, totaling 117 mm (4.6 in) over 17 days, along with an increase in humidity to 89%. For a detailed look at the December climate, you can check out the information on Hay weather in December.
As September unfolds in Hay, the weather begins to transition, showcasing a remarkable shift from the warmer summer months. With the maximum temperatures reaching a pleasant 27°C (80°F), this month still holds on to some of the last remnants of summer warmth, while the average drops to a cooler 13°C (55°F), hinting at the approaching autumn chill. Rainfall becomes more frequent, with precipitation occurring on 12 days, bringing an average of 74 mm (2.9 in) of much-needed moisture to the landscape. The notably high humidity of 79% further emphasizes the sense of change in the air, making September in Hay a month of delightful contrasts. For a deeper look into what to expect throughout the year, visit Hay Climate.