Last updated: March 17, 2025
In Weymouth, United Kingdom, September brings a delightful transition into autumn, boasting an average temperature of 16°C (61°F), with highs reaching 22°C (71°F) and cooler nights dropping to a minimum of 10°C (50°F). However, visitors should prepare for some rain, as the month sees approximately 58 mm (2.3 in) of precipitation over 9 days, leading to a relatively high humidity level of 79%. Enjoy the mild weather and the changing hues of nature during this vibrant time of year!
As autumn begins to creep in, Weymouth experiences a shift in temperatures during September, offering a pleasant transition from the warmth of summer. With a minimum of 10°C (50°F) and an average temperature of 16°C (61°F), the weather remains mild, inviting locals and visitors alike to enjoy the picturesque coastal scenery. The maximum temperature reaches a comfortable 22°C (71°F), a fitting climax to the warm season. This month illustrates a steady decline from the peak summer warmth, yet still retains a delightful charm, making it an ideal time for outdoor activities before the chill of October settles in. Overall, September in Weymouth captures the essence of late summer with a hint of the autumnal change ahead.
September in Weymouth brings a transition into autumn, characterized by a moderate precipitation of 58 mm (2.3 in) over 9 days of rainfall. This marks a decrease from the wetter months of summer, particularly August, which recorded 77 mm (3.0 in). The early signs of seasonal change are evident as Weymouth’s precipitation begins to taper off, laying the groundwork for the wetter months ahead. Notably, this shift sets the stage for October’s anticipated deluge, often marked by a significant increase in both rainfall amount and days, contrasting sharply with September’s milder conditions. As the landscape begins to shift colors with fall foliage, residents can expect the first hints of autumn's wetness while reflecting on summer’s abundant showers.
As September rolls into Weymouth, the humidity begins to settle at a comfortable 79%, marking a slight drop from the summer months. Throughout the year, this coastal town has exhibited a noticeable trend: humidity levels peak during the winter and early spring, often hovering around 88-90%, while the warmer months see a gradual decline, culminating in 70% in July. However, September brings a refreshing blend of warmth and moisture, striking a balance before the autumn chill takes hold. Despite this moderate decrease, the overall humidity remains higher than in late spring, indicating that while summer fades, the maritime climate continues to embrace the region with moisture-laden air. This gradual shift lays the groundwork for the wetter conditions of autumn, which are just on the horizon.
As September rolls into Weymouth, the UV Index remains a notable 6, categorizing the sun's intensity as high. This suggests that while temperatures begin to cool, the sun still poses a risk for unprotected skin, with a burn time of just 25 minutes. Interestingly, this month holds steady in UV intensity compared to August, reflecting a gradual transition from the peak summer rays of July and August. As autumn approaches, it’s essential to maintain sun safety, ensuring proper protection during outdoor activities, as these early autumn days can still deliver potent UV exposure. For more detailed information on local UV levels, check out the Weymouth UV Index.
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As the summer days begin to wane, September in Weymouth, United Kingdom, boasts a delightful 334 hours of sunshine, maintaining a bright atmosphere while signalling the seasonal shift. This month marks a gentle decline from the sun-soaked peak of July, which enjoys an impressive 435 hours, and a gradual tapering off into the autumn months. Notably, September's sunshine remains generous compared to the earlier months of the year, particularly January's scant 107 hours. As the warmth of summer recedes, September offers a beautiful blend of sunshine to usher in the fall, inviting both locals and visitors to enjoy the stunning coastal views under a golden sky.
In September, the likelihood of sunny weather in Weymouth, United Kingdom, stands at 35%, indicating a robust potential for pleasant days as summer transitions to autumn. This percentage remains consistent with August’s figures, suggesting that while the days may begin to shorten, there's still ample opportunity to enjoy the sunshine. Notably, September's sunny prospects are a step up from the dismal mid-winter months, where chances plummet to just 22% in January. Overall, while September may not boast the highest probability of bright skies compared to the spring months, it offers a reliable chance for warmth and outdoor enjoyment, making it a charming time to visit this coastal gem.
As summer fades, September in Weymouth, United Kingdom welcomes a gradual transition in daylight, offering about 12 hours of light—a notable shift from the sun-drenched days of June and July. This decrease reflects a common trend as the year progresses; daylight peaks during the vibrant months of late spring and early summer, with 16 hours in June, then steadily declines as autumn approaches. Enlightened by 15 hours in May and 14 hours in August, September serves as a gentle reminder of the impending seasonal change, leading into the cooler months of October and November, which each provide just 10 hours and 8 hours of daylight, respectively. The ebb and flow of daylight not only mark the changing seasons but also set the stage for Weymouth's picturesque autumnal scenery.
In September, Weymouth experiences a gentle breeze with an average wind speed of 5.3 m/s (12 mph), marking a slight increase from the calmer summer months of June through August. This transition towards autumn sees the winds picking up, although not quite as brisk as in the earlier months of the year. The gradual shift in wind patterns can be observed as it suggests a prelude to the more dynamic and vigorous gusts anticipated in the following autumn months, particularly in October, where the average wind speed jumps to 7.0 m/s (16 mph). Overall, September serves as a serene bridge between the lazy summer days and the invigorating winds of fall, inviting both locals and visitors to enjoy the pleasantly moderated coastal breezes.
The weather in Weymouth 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 Weymouth and find detailed weather information for every month.
September and January weather present quite a contrast. In September, temperatures typically range from a mild 10°C (50°F) to a pleasant 22°C (71°F), with an average of 16°C (61°F). This month experiences around 58 mm (2.3 in) of precipitation over approximately 9 days, coupled with a relatively high humidity of 79%. In contrast, January's temperatures drop significantly, with a minimum of 1°C (35°F) and a maximum of 14°C (57°F), averaging around 8°C (46°F). This winter month sees increased precipitation at 74 mm (2.9 in) across about 12 days, along with even higher humidity levels at 88%. For more detailed information, check out Weymouth weather in January.
September weather is generally milder, with temperatures ranging from a minimum of 10°C (50°F) to a maximum of 22°C (71°F) and an average of 16°C (61°F). In contrast, February experiences much colder conditions, with temperatures ranging from a minimum of -1°C (30°F) to a maximum of 13°C (55°F) and an average of 8°C (46°F). September has lower precipitation at 58 mm (2.3 in) over about 9 days, while February sees increased rainfall totaling 83 mm (3.3 in) spread across 13 days. Additionally, with 79% humidity in September compared to 88% in February, there’s a noticeable difference in the overall feel of the weather. For further details, check out Weymouth weather in February.
September and March present quite different weather experiences. In September, temperatures tend to be milder, with averages around 16°C (61°F), ranging from a low of 10°C (50°F) to a high of 22°C (71°F). The month sees around 58 mm of precipitation over approximately 9 days, and humidity levels are at 79%, making it a relatively comfortable transition into autumn. In contrast, March is significantly cooler, with average temperatures at only 8°C (47°F), ranging from a low of -2°C (29°F) to a maximum of 13°C (56°F). This month receives more rainfall, totaling 82 mm over about 13 days, and has a higher humidity level of 86%. For a more detailed look at March weather, you can visit Weymouth weather in March.
When comparing the weather in September and April, there are notable differences in temperature and precipitation patterns. September generally enjoys milder conditions, with average temperatures ranging from a minimum of 10°C (50°F) to a maximum of 22°C (71°F), compared to April's cooler average of 3°C (37°F) to 18°C (64°F). While September experiences a higher average temperature of 16°C (61°F) and greater rainfall totaling 58 mm (2.3 in) over about 9 days, April sees less precipitation at 41 mm (1.6 in) over 7 days, contributing to its somewhat drier feel despite its higher humidity level of 84%. For more insights on April weather, check out Weymouth weather in April.
When comparing the weather in September and May, September tends to be warmer overall, with average temperatures ranging from a minimum of 10°C (50°F) to a maximum of 22°C (71°F), while May has a cooler average, with temperatures between 5°C (42°F) and 20°C (68°F). Both months experience similar levels of precipitation, with September receiving 58 mm (2.3 in) over about 9 days and May slightly wetter at 68 mm (2.7 in) over 10 days. Humidity levels are quite close as well, with September at 79% and May at 80%, making both months feel relatively damp but with a more comfortable warmth in September. For a detailed look at May's climate, you can visit Weymouth weather in May.
In comparing the weather of September and June, one can observe some notable differences. September typically boasts slightly warmer temperatures, with a minimum of 10°C (50°F), an average of 16°C (61°F), and a maximum of 22°C (71°F). In contrast, June features a similar minimum of 10°C (50°F) but has a lower average of 15°C (59°F) and a maximum of 20°C (69°F). However, June experiences more precipitation, totaling 74 mm (2.9 in) over about 10 days, compared to September’s 58 mm (2.3 in) over roughly 9 days. Both months have high humidity levels, with September at 79% and June slightly higher at 80%. For more detailed information, you can check Weymouth weather in June.
When comparing September and July weather, both months experience similar maximum temperatures, averaging around 22°C (72°F). However, September tends to be cooler overall, with a lower minimum temperature of 10°C (50°F) compared to July's 12°C (54°F). Additionally, September sees higher precipitation levels, with an average of 58 mm (2.3 in) over 9 days, while July has slightly less rainfall at 50 mm (2.0 in) over 8 days. Humidity is also higher in September at 79%, compared to July's 70%. For more detailed information, you can check Weymouth weather in July.
In comparing the weather of September to August, September tends to be cooler with temperatures ranging from a minimum of 10°C (50°F) to a maximum of 22°C (71°F), while August enjoys slightly warmer conditions with minimums at 12°C (53°F) and maximums reaching 26°C (78°F). Precipitation also varies, with September receiving 58 mm (2.3 in) over 9 days, compared to August's 77 mm (3.0 in) over 11 days. Additionally, September exhibits higher humidity levels at 79%, as opposed to August's 73%. For a detailed view of August weather, visit Weymouth weather in August.
In comparing the weather between September and October, there is a notable shift in temperature and precipitation patterns. September experiences milder conditions with average temperatures ranging from a minimum of 10°C (50°F) to a maximum of 22°C (71°F), alongside 58 mm (2.3 in) of rain over 9 days and a humidity level of 79%. In contrast, October sees a drop in temperatures, with averages ranging from a minimum of 4°C (40°F) to a maximum of 19°C (66°F). The month also records significantly higher precipitation, totaling 144 mm (5.7 in) over 17 days and an increase in humidity to 89%. For more detailed insights, you can check Weymouth weather in October.
In September, the weather is milder, with average temperatures ranging from a minimum of 10°C (50°F) to a maximum of 22°C (71°F). The month generally experiences 58 mm (2.3 in) of precipitation over about 9 days, with a humidity level of 79%. In contrast, November sees a significant drop in temperatures, with averages between 3°C (37°F) and 16°C (61°F). This month is notably wetter, receiving 107 mm (4.2 in) of rain over 15 days, accompanied by increased humidity at 90%. For more details on what to expect, check out Weymouth weather in November.
September and December present quite contrasting weather conditions. In September, temperatures are generally milder, with a minimum of 10°C (50°F) and an average of 16°C (61°F), peaking at a comfortable 22°C (71°F). However, this month sees some rainfall, totaling 58 mm (2.3 in) over about 9 days, with humidity levels around 79%. In contrast, December brings much colder temperatures, with a minimum of 3°C (37°F) and an average of 9°C (49°F), not exceeding 13°C (57°F). This month experiences significantly higher precipitation at 136 mm (5.4 in) over approximately 18 days, along with increased humidity at 89%. For those interested in the specifics of December weather patterns, Weymouth weather in December offers additional insights.
As September rolls into Weymouth, the weather transitions into a milder yet unpredictable phase, showcasing a delightful interplay between warmth and coolness. With average temperatures hovering around a comfortable 16°C (61°F), this month stands out from the sweltering highs of summer. While the chance of rain increases, contributing to about 9 days of precipitation, the overall humidity levels remain relatively high, ensuring the air feels pleasantly crisp. This blend of conditions creates an ideal backdrop for outdoor activities, making September a unique time to experience Weymouth's charm. For a deeper dive into the seasonal variations, explore the full details at Weymouth Climate.