Last updated: March 17, 2025
September in Monmouth, United Kingdom, presents a captivating blend of seasonal transitions, with a maximum temperature peaking at a warm 29°C (84°F) while the average hovers around a comfortable 14°C (58°F). As the month progresses, nighttime can bring a noticeable chill, with lows dipping to 3°C (38°F). Gardeners and outdoor enthusiasts might appreciate the 54 mm (2.1 in) of precipitation spread over 8 days, nurturing the lush landscapes for which the region is known. Despite this rainfall, humidity levels can be quite high at 79%, adding a touch of moisture to the air and enhancing the vibrant hues of early autumn foliage.
As September arrives in Monmouth, the lingering warmth of summer begins to soften, ushering in an autumnal chill. With minimum temperatures averaging around 3°C (38°F), the mornings can feel brisk, yet the average high reaches a comfortable 29°C (84°F), providing plenty of opportunities for outdoor enjoyment. The average temperature of 14°C (58°F) hints at a transition, making this month a delightful blend of warmth and coolness. Following the sweltering highs of August, September brings a refreshing balance, marking a gentle shift towards the cooler months ahead yet still retaining the charm of summer's lingering embrace.
In September, Monmouth experiences a notable shift in precipitation patterns, with a total of 54 mm (2.1 in) across just 8 days of rain. This marks a reduction compared to the soggier preceding months, particularly August, which recorded the same amount of rainfall but over 11 days. As the region transitions from summer to autumn, the decreased rainfall indicates a slight reprieve, allowing for some drier spells before the wetter months set in. Looking ahead, October looms with a forecasted increase to 98 mm (3.9 in), reminding residents that the wet season is just around the corner. This shift emphasizes the dynamic nature of Monmouth's climate, where early autumn offers a brief, yet welcome, pause in precipitation.
In September, Monmouth experiences a notable shift in humidity levels, with the average reaching 79%. Following the more comfortable summer months of July and August, where humidity dipped to 70% and 73% respectively, September marks a transition towards the wetter conditions characteristic of autumn. This increase in humidity is part of a broader trend where the levels begin to rise again as the year progresses, culminating in the significantly higher figures seen in the final months, with October and November showing humidity levels of 89% and 90%. The gradual change in September prepares residents for the wetter weather ahead, as the air grows heavier with moisture, enhancing the feel of the season's shift.
As September arrives in Monmouth, the UV Index reflects a significant shift from the scorching summer months, settling at 6, while still falling within the high exposure category. This means that while the intensity of UV radiation is less than in July and August, sun protection remains essential, especially during the 25-minute burn time. The gradual decline from the peak summer values hints at the transition into autumn, yet individuals venturing outdoors should still stay vigilant against potential sun damage. Embrace the beautiful early autumn days, but remember to check the UV levels and safeguard your skin! For more detailed information, visit Monmouth UV Index.
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As September arrives in Monmouth, the transition from summer begins to unfold, showcasing 281 hours of sunshine that reflect a delightful blend of warmth and early autumn's charm. This marks a gentle decline from the vibrant summer months, notably July, which boasts a peak of 397 hours of sunlight. However, September still offers ample sunlight compared to earlier months, providing a golden opportunity for outdoor activities and enjoying the changing scenery. The sun's lingering presence serves as a comforting farewell to summer, soon to be followed by the softer, more muted rays of October. Overall, while the days grow shorter, September remains a luminous chapter in Monmouth's annual weather narrative.
As September rolls into Monmouth, the likelihood of sunny weather stands at 27%, mirroring the somewhat cloudy summer months of July and August. While this percentage offers a fair chance for a glimpse of sunshine, it’s a stark contrast to the brighter days of April, which boasts a 51% chance of sun. This trend suggests that while the summer draws to a close, the skies can still be unpredictable. For those hoping to soak up the last bits of warmth before autumn takes hold, September may deliver a few pleasant surprises, but it's wise to keep an umbrella handy just in case!
As September rolls into Monmouth, daylight begins its gentle decline, offering about 12 hours of sunshine—a subtle transition from the long, bright days of summer. Following the peak daylight of 16 hours in June and July, September still allows for ample time to enjoy the outdoors, especially as the vibrant hues of early autumn start to paint the landscape. This month marks a shift towards shorter days, reminiscent of the gradual light loss that continues through the fall, eventually settling at just 8 hours by November. The gradual decrease in daylight not only signals the change of seasons but also invites residents to savor the last warm days before the longer, darker months arrive.
As September graces Monmouth with its gentle breeze, the average wind speed settles at 3.1 m/s (7 mph), marking a subtle shift as summer gives way to autumn. This dip in wind intensity from the preceding months aligns with a broader trend observed throughout the year, where the wind starts to soften as the warmer months fade. Notably, July records the lowest average speeds at 2.9 m/s (6 mph), reflecting the calmness of summer. Meanwhile, as the leaves begin to change and temperatures cool, wind speeds tend to rise again in October, with an average of 4.3 m/s (10 mph). This cyclical pattern illustrates how Monmouth's winds dance between the seasons, providing a tranquil yet dynamic atmospheric experience.
The weather in Monmouth 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 Monmouth and find detailed weather information for every month.
September and January present contrasting weather conditions. In September, temperatures range from a mild 3°C (38°F) to a warm 29°C (84°F), with an average of 14°C (58°F) and a humidity of 79%. It experiences a moderate amount of rainfall at 54 mm (2.1 in) over about 8 days. In stark contrast, January is much colder, with temperatures dipping as low as -4°C (25°F) and peaking at 14°C (57°F), averaging just 5°C (41°F). The humidity increases to 88%, and while it has a similar total precipitation of 54 mm (2.1 in), this occurs over more days—10 in total. For more details on January weather, you can visit Monmouth weather in January.
September and February present strikingly different weather patterns. In September, temperatures range from a mild 3°C (38°F) to a warm 29°C (84°F), with an average of 14°C (58°F). The month experiences about 54 mm (2.1 in) of precipitation over approximately 8 days, accompanied by a humidity level of 79%. In contrast, February is much colder, with temperatures dipping as low as -5°C (23°F) and reaching a maximum of 18°C (64°F), averaging around 6°C (43°F). This month tends to be wetter with 67 mm (2.6 in) of precipitation over 13 days and higher humidity at 88%. For a closer look at February's weather, check out Monmouth weather in February.
September and March exhibit quite different weather characteristics. In September, temperatures range from a chilly 3°C (38°F) at night to a warm 29°C (84°F) during the day, with an average of 14°C (58°F). The month has relatively low precipitation, totaling 54 mm (2.1 in) over about 8 rainy days and a humidity level of 79%. Conversely, March experiences cooler conditions, with temperatures dipping as low as -6°C (21°F) at night and peaking at 21°C (70°F) during the day, averaging only 7°C (45°F). This month sees more rainfall, accumulating 74 mm (2.9 in) over 14 days, and slightly higher humidity at 86%. For a closer look at how weather impacts daily life, check out Monmouth weather in March.
September and April present contrasting weather patterns. In September, temperatures range from a minimum of 3°C (38°F) to a maximum of 29°C (84°F), providing a more comfortable average of 14°C (58°F) and generally pleasant days. Precipitation is relatively moderate at 54 mm (2.1 in) over approximately 8 days, with humidity averaging 79%. In contrast, April experiences cooler temperatures, with a minimum of -3°C (28°F) and a maximum of 23°C (74°F), resulting in an average of 9°C (49°F). Despite slightly less rainfall at 52 mm (2.0 in) over 9 days, the humidity is higher at 84%. For a more detailed understanding of the weather conditions in April, you can visit Monmouth weather in April.
In September, temperatures exhibit a broader range, with a minimum of 3°C (38°F) and a maximum of 29°C (84°F), making it generally warmer than May, which has a minimum of 0°C (33°F) and a maximum of 26°C (80°F). The average temperature in September is 14°C (58°F), while May has a slightly cooler average of 12°C (54°F). September sees less precipitation, accumulating 54 mm (2.1 in) over about 8 days compared to May's 73 mm (2.9 in) over 12 days, indicating that May tends to be wetter. Both months have similar humidity levels, with September at 79% and May at 80%. For more detailed insights, you can check Monmouth weather in May.
In September, the weather features a broader temperature range with minimums dipping to 3°C (38°F), an average of 14°C (58°F), and maximums reaching 29°C (84°F). This month sees about 54 mm (2.1 in) of precipitation over approximately 8 days, with humidity levels averaging around 79%. In contrast, June presents slightly warmer temperatures, with minimums of 6°C (44°F), an average of 16°C (61°F), and peak temperatures of 30°C (87°F). Rainfall in June is more substantial, totaling 75 mm (3.0 in) across about 12 days, while humidity remains quite similar at 80%. For a detailed overview, you can explore Monmouth weather in June.
When comparing the weather in September and July, it's evident that July tends to be warmer, with average temperatures reaching 18°C (64°F) and a maximum of 30°C (87°F). In contrast, September features a cooler average temperature of 14°C (58°F) and a maximum of 29°C (84°F). While July experiences slightly more precipitation at 63 mm (2.5 in) over 10 days, September sees 54 mm (2.1 in) of rain across 8 days, indicating a somewhat drier month. Additionally, September has a higher humidity level at 79%, compared to July's 70%. For more details on July weather, you can visit Monmouth weather in July.
In comparison to August, September experiences slightly cooler temperatures, with a minimum of 3°C (38°F) compared to August's minimum of 7°C (45°F) and an average of 14°C (58°F) versus 17°C (62°F) in August. The maximum temperature in September peaks at 29°C (84°F), which is lower than August's high of 32°C (89°F). Precipitation is also somewhat lower in September, with a total of 54 mm (2.1 in) over 8 days, compared to 75 mm (2.9 in) over 11 days in August. Interestingly, September features higher humidity at 79%, compared to 73% in August. For more details on August weather, check out Monmouth weather in August.
September typically boasts milder weather, with temperatures ranging from a minimum of 3°C (38°F) to a maximum of 29°C (84°F) and an average of 14°C (58°F). With 54 mm (2.1 in) of precipitation over about 8 days, humidity levels sit at 79%. In contrast, October brings cooler temperatures, dropping to a minimum of -1°C (31°F) and averaging 11°C (53°F), with a maximum of 23°C (73°F). The month is wetter, receiving 98 mm (3.9 in) of rainfall over approximately 13 days, and humidity increases to 89%. This shift marks a transition towards more autumnal and variable weather conditions. For more specific details, check out Monmouth weather in October.
September generally offers milder weather compared to November, with temperatures ranging from a minimum of 3°C (38°F) to a maximum of 29°C (84°F) and an average of 14°C (58°F). The month experiences lower precipitation at 54 mm (2.1 in) over about 8 days, along with a relatively comfortable humidity level of 79%. In contrast, November sees a more pronounced chill, with temperatures dipping to a minimum of -2°C (28°F) and an average high of just 17°C (62°F). Rainfall increases to 72 mm (2.8 in) across 13 days, contributing to higher humidity levels of 90%. For more specific details about November, you can refer to Monmouth weather in November.
In September, the weather typically ranges from a mild 3°C (38°F) at night to a comfortable high of 29°C (84°F) during the day, with an average temperature of 14°C (58°F). This month sees a total precipitation of 54 mm (2.1 in) spread over about 8 days, and the humidity levels sit at 79%, giving it a generally pleasant feel. In contrast, December brings a significant drop in temperatures, with lows reaching -8°C (17°F) and highs only reaching 14°C (57°F), averaging around 7°C (44°F). This winter month experiences more rain, accumulating 93 mm (3.7 in) over approximately 15 days, accompanied by higher humidity at 89%. For more detailed insights, check out Monmouth weather in December.
As summer fades into autumn, September in Monmouth showcases a remarkable shift in weather. The month offers a pleasant blend of warm days with maximum temperatures reaching 29°C, while nighttime coolness can bring temperatures down to around 3°C. This contrast creates a dynamic atmosphere, making it ideal for outdoor activities. However, with 54 mm of precipitation over about 8 days, it's wise to prepare for occasional showers that add to the season's charm. Furthermore, the high humidity levels of around 79% can make the air feel softer, enhancing the vibrant colors of fall. For a deeper understanding of the region's climate patterns, you can explore Monmouth Climate.