Last updated: March 17, 2025
September in Dartmouth offers a pleasant transition from summer to autumn, with maximum temperatures reaching up to 21°C (69°F) and an average of 16°C (60°F). As the month progresses, temperatures dip to a refreshing minimum of 10°C (51°F). However, keep your umbrella handy, as this month sees 52 mm (2.1 in) of rain spread over 8 days, contributing to a humidity level of 79%. Whether you're exploring the scenic coastlines or cozying up in a café, Dartmouth’s September weather is perfect for experiencing the charm of this serene UK coastal town.
In September, Dartmouth, United Kingdom basks in the pleasant transition from summer to autumn, with temperatures showcasing a delightful balance. The month begins with a mild minimum temperature of 10°C (51°F), rising to an average of 16°C (60°F) and peaking at a comfortable 21°C (69°F). This gradual cooling trend marks a shift from the warmer summer months, yet remains inviting for outdoor activities and exploration. As the days gradually shorten and the crispness of fall begins to set in, September offers a perfect blend of warmth and refreshing breezes, making it an appealing time to experience Dartmouth’s natural beauty and vibrant atmosphere.
September in Dartmouth, United Kingdom, brings a blend of gentle rainfall and the fading warmth of summer. With 52 mm (2.1 in) of precipitation over 8 days, it marks a transition from the slightly wetter summer months, such as August, which saw 62 mm (2.5 in) of rain. This gradual decrease in both rainfall and rainy days indicates the onset of drier autumn conditions. As the weather shifts, September's precipitation prepares the landscape for the more significant rainfall that October typically brings, with its average 122 mm (4.8 in) spread across 16 days. The trend showcases typical British variability, where the lush greenery of early autumn thrives on September's modest showers.
In Dartmouth, United Kingdom, September marks a subtle transition in humidity levels, with average humidity dropping to 79%. This signifies a gradual decrease from the summer months, where levels peaked at 73% in August. The trend showcases a shift from the warmer, more humid summer days to the onset of autumn, reflected in a steady rise in humidity through the fall months. As the year progresses, Dartmouth experiences its highest humidity levels in the colder months of October and November, hitting 89% and 90% respectively. Overall, September serves as a bridge, gently easing inhabitants from the warmth of summer into the cooler embrace of fall, while still maintaining a relatively high humidity that characterizes the region throughout the year.
As we transition into September in Dartmouth, the UV Index reaches a high of 6, suggesting a burn time of just 25 minutes for fair-skinned individuals. This month marks a notable shift as summer fades, with the UV levels gradually decreasing from the peak experienced in June and July. However, the lingering sun still requires attention, as the days remain relatively bright. Following September, the Index dips back to a moderate level in October, emphasizing the importance of sun protection even as the season changes. For more detailed information, you can visit Dartmouth UV Index.
UV Risk Categories
As summer gives way to autumn, September in Dartmouth offers a delightful blend of warmth and light, boasting 333 hours of sunshine. This month stands as a bridge between the sun-drenched days of July and August, which recorded 431 and 394 hours respectively. September’s generous sunshine, while slightly diminished from the peak summer months, still showcases a significant glow compared to the deepening shadows of October with just 263 hours. This gradual decline highlights the transition into the cooler seasons, yet September remains a vibrant time in Dartmouth, inviting both locals and visitors to bask in the lingering warmth before winter’s embrace takes hold.
In Dartmouth, the likelihood of sunny weather in September stands at a moderate 37%, making it one of the more favorable months for sunshine as summer wanes. This percentage reflects a slight increase from the 34% chance in August, suggesting a promising transition into autumn. Notably, this figure is considerably higher than the dreariness of the winter months, where the chance of sunshine dips to as low as 22% in January. Overall, while September may not boast the sun-soaked days of mid-summer, it certainly offers a pleasant opportunity for enjoying clearer skies before the clouds of October set in.
As September rolls into Dartmouth, the vibrant summer days start to give way to the more muted light of autumn. The month boasts 12 hours of daylight, a noticeable decline from the sun-soaked heights of 16 hours in June. This gradual reduction in daylight is part of a larger trend where the brightness peaks in late spring and slowly recedes, with longer evenings transitioning into darker months. By September, the daylight still offers a charming warmth, perfect for enjoying the lingering outdoor activities, yet signals the approach of winter as days shorten further to 10 hours in October. The rhythmic ebb and flow of sunlight in Dartmouth paints a charming picture of the changing seasons, inviting residents to cherish the last glimpses of summer before the evenings turn crisp.
As September rolls into Dartmouth, the winds begin to mellow, reaching an average speed of 5.3 m/s (12 mph). This subtle decrease follows the more brisk gusts of summer, where July and August recorded speeds of 5.0 m/s and 5.7 m/s respectively, suggesting a gradual transition into the autumn months. The winds in September are notably calmer than the peak of spring when March reached 6.8 m/s (15 mph). Looking ahead, October is expected to pick up slightly, hinting at the renewed vigor of the autumn breeze. This shift from the warm, lazy days of summer to the cooler, sharper winds of fall marks a beautiful change in the coastal landscape, setting the stage for a picturesque transition in Dartmouth.
The weather in Dartmouth 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 Dartmouth and find detailed weather information for every month.
September typically showcases milder weather with average temperatures ranging from a minimum of 10°C (51°F) to a maximum of 21°C (69°F). Rainfall is moderate, with about 52 mm (2.1 in) spread across 8 days, and humidity levels hover around 79%. In contrast, January presents a much cooler and damp climate, with average temperatures dipping to between 2°C (36°F) and 14°C (58°F). Precipitation increases slightly to 63 mm (2.5 in), occurring on about 11 days, and humidity rises to 88%. The stark differences between these months highlight the transition from the mildness of early autumn to the chill of winter. For more details on the conditions to expect, check out Dartmouth weather in January.
In September, the weather showcases a mild transition into autumn, with average temperatures ranging from a minimum of 10°C (51°F) to a maximum of 21°C (69°F). The month experiences about 52 mm (2.1 in) of precipitation over 8 days, with a humidity level of 79%. In contrast, February is notably colder, with average temperatures peaking at 13°C (55°F) and dipping to a chilly minimum of 0°C (32°F). The precipitation increases to 75 mm (3.0 in) spread across 14 days, accompanied by a higher humidity level of 88%. Overall, September is warmer and drier, while February offers a much cooler and wetter climate. For more details on February weather, visit Dartmouth weather in February.
In comparing the weather of September and March, there is a noticeable shift in temperature and precipitation. September enjoys a milder climate with average temperatures ranging from 10°C (51°F) to a maximum of 21°C (69°F), alongside relatively low precipitation of 52 mm (2.1 in) over about 8 days. In contrast, March tends to be much colder, with average temperatures between -1°C (30°F) and a maximum of 13°C (55°F). It also experiences higher precipitation at 83 mm (3.3 in) distributed over approximately 13 days, contributing to a more humid atmosphere at 86%. For a closer look at March weather specifics, you can check Dartmouth weather in March.
In comparing the weather of September and April, we see notable differences in temperature and humidity. September boasts a milder climate with average temperatures ranging from a minimum of 10°C (51°F) to a maximum of 21°C (69°F), contrasted with April, which has lower temperatures, averaging 3°C (38°F) at its minimum and 16°C (61°F) at its maximum. While both months experience around eight days of precipitation, September receives slightly more rain, totaling 52 mm (2.1 in) compared to April's 43 mm (1.7 in). Additionally, April tends to be a bit more humid at 84%, compared to September's 79%. For more detailed information, you can check Dartmouth weather in April.
In comparing the weather between September and May, September generally features milder temperatures, with an average of 16°C (60°F) and highs reaching up to 21°C (69°F), while May sees cooler conditions, averaging 12°C (53°F) with maximums of 19°C (66°F). However, May experiences slightly higher precipitation levels at 66 mm (2.6 in) over approximately 10 days compared to September’s 52 mm (2.1 in) across 8 days. Both months have similar humidity levels, hovering around 79% in September and 80% in May, which can make the air feel damp. For more detailed insights, you can check Dartmouth weather in May.
When comparing the weather in September and June, there are subtle differences in temperature and precipitation. September enjoys slightly warmer temperatures, with averages reaching 16°C (60°F) compared to June's average of 14°C (58°F). The maximum temperature in September is also higher, peaking at 21°C (69°F) versus June’s maximum of 20°C (68°F). However, June experiences a bit more rainfall, with 63 mm (2.5 in) of precipitation across 9 days, compared to 52 mm (2.1 in) over 8 days in September. Humidity remains fairly consistent between the two months, with September at 79% and June at 80%. For more specific insights on June weather, check out Dartmouth weather in June.
In comparing the weather of September and July, we see distinct differences in temperature and humidity levels. July tends to be slightly warmer, with average temperatures ranging from a minimum of 12°C (53°F) to a maximum of 24°C (75°F) and an average of 17°C (62°F). In contrast, September cools down, featuring a minimum of 10°C (51°F) and a maximum of 21°C (69°F), with an average temperature of 16°C (60°F). Precipitation levels are relatively similar, with July receiving 54 mm (2.1 in) over 9 days and September averaging 52 mm (2.1 in) across 8 days. Moreover, September has a higher humidity level at 79%, compared to July's 70%, contributing to a more humid feel as summer transitions to autumn. For further details, you can check Dartmouth weather in July.
In comparing the weather of September and August, September presents cooler temperatures, with a minimum of 10°C (51°F) and a maximum of 21°C (69°F), while August remains slightly warmer, boasting a minimum of 12°C (55°F) and a maximum of 23°C (73°F). Precipitation levels are also noteworthy: September sees 52 mm (2.1 in) over 8 days, compared to August's 62 mm (2.5 in) over 9 days, indicating that while both months experience rain, August is a bit wetter. Additionally, September's humidity stands at 79%, slightly higher than August's 73%, contributing to a more muggy feel as fall approaches. For a more detailed look at August weather, you can visit Dartmouth weather in August.
Comparing the weather in September and October reveals notable shifts as autumn deepens. In September, temperatures range from a minimum of 10°C (51°F) to a maximum of 21°C (69°F), with an average of 16°C (60°F), and the month experiences about 52 mm (2.1 in) of precipitation over 8 days. Humidity is relatively high at 79%.
In contrast, October brings cooler temperatures, with a minimum of 5°C (42°F) and a maximum of 19°C (67°F), resulting in an average of 13°C (57°F). The month sees an increase in precipitation to 122 mm (4.8 in) over 16 days, accompanied by even higher humidity levels at 89%. Overall, October is generally wetter and colder, marking a more pronounced shift into fall. For more details, check out the Dartmouth weather in October.
In comparing the weather between September and November, we observe a notable decline in temperatures. September typically enjoys a mild climate with average temperatures ranging from a minimum of 10°C (51°F) to a maximum of 21°C (69°F), while November's readings drop significantly, with averages between 4°C (39°F) and 16°C (61°F). Additionally, November experiences increased precipitation, with about 103 mm (4.1 in) falling over 16 days compared to September's 52 mm (2.1 in) over 8 days. Furthermore, humidity levels rise in November to 90%, compared to 79% in September, making the latter feel relatively drier. For more details on the typical conditions, you can check Dartmouth weather in November.
In September, the weather offers milder conditions with average temperatures hovering around 16°C (60°F) and a maximum of 21°C (69°F), making it a comfortable month for outdoor activities. The precipitation levels are moderate at 52 mm (2.1 in) over about 8 days, and humidity is relatively high at 79%. In contrast, December brings a notable drop in temperatures, with averages around 10°C (49°F) and daytime highs reaching only 14°C (57°F). The month is considerably wetter, with 118 mm (4.7 in) of rainfall spread over 17 days, and humidity increases to 89%. For more detailed information, you can check Dartmouth weather in December.
As September unfolds in Dartmouth, the weather embraces a charming transition from the warmth of summer to the crispness of autumn. With temperatures averaging around 16°C (60°F), this month tends to be milder compared to the peak summer heat, offering a refreshing respite. However, you may encounter a bit of rain, with precipitation occurring on roughly eight days, contributing to a relatively humid atmosphere at 79%. This unique blend of warmth and moisture makes September an ideal time for enjoying the changing foliage and the serene beauty of the area. For more detailed insights, explore the full picture at Dartmouth Climate.