Last updated: February 24, 2025
In September, Cape Neddick experiences a delightful transition into autumn with maximum temperatures reaching 28°C (83°F) and an average of 18°C (65°F), offering pleasant days for outdoor activities. Nights cool down, with minimum temperatures dipping to 9°C (49°F), providing a cozy atmosphere. While the region sees 80 mm (3.2 in) of rainfall over 8 days, the humidity level sits at a comfortable 71%, ensuring an invigorating seaside climate. This balance of warmth and moisture makes September a charming month to explore the coastal beauty of Cape Neddick.
As September unfolds in Cape Neddick, the lingering warmth of summer begins to wane, yet the month still offers a delightful transition with temperatures ranging from a minimum of 9°C (49°F) to a maximum of 28°C (83°F). The average temperature settles comfortably at 18°C (65°F), inviting gentle breezes and a cooler atmosphere without the chill of autumn fully setting in. This month marks a gradual decrease from the sweltering heights of July and August, where temperatures peaked at 31°C (88°F) and 29°C (84°F), respectively. As the days grow shorter and the evenings crisp, September serves as a gentle reminder of the seasonal shift, a perfect time for outdoor adventures against a backdrop of colorful foliage emerging ahead.
In September, Cape Neddick experiences a moderate level of precipitation, with an accumulation of 80 mm (3.2 in) over 8 days, showing a slight increase from the drier summer months of July and August, which recorded 110 mm (4.3 in) and 61 mm (2.4 in), respectively. This transitional month sets the stage for the wetter fall season; precipitation begins to ramp up ahead of the heavier rains seen in October, when totals jump significantly to 152 mm (6.0 in). The shift from summer warmth to autumnal chill is marked by not only the increased moisture but also the frequency of rainy days, suggesting that September acts as a bridge between the drier summer and the more consistently wet months ahead.
In September, Cape Neddick experiences a slight uptick in humidity, rising to 71% after the summer months of July and August, which recorded the lowest levels of the year at 67% and 66%, respectively. This increase marks a transition as the air begins to feel progressively more humid, reminiscent of the fall months ahead. The humidity then starts to rise more noticeably throughout October, reaching 78%, before settling down again in the winter months. Overall, September serves as a bridge between the drier summer and the more humid fall, offering a balanced atmosphere that hints at the seasonal shifts to come.
As September rolls into Cape Neddick, the UV Index sees a slight dip, registering at 7, which falls into the high exposure category. This indicates a moderate risk for harm from unprotected sun exposure, necessitating some precaution. With a burn time of 25 minutes, it's essential for residents and visitors to take protective measures, particularly during midday hours when the sun's rays are strongest. This decrease from the peak summer months, where indices soared as high as 10, reflects the seasonal transition and serves as a reminder to adapt sun safety habits as the fall approaches. For a detailed analysis of UV trends throughout the year, check out the Cape Neddick UV Index.
UV Risk Categories
As summer gracefully transitions into autumn, September in Cape Neddick brings a delightful 283 hours of sunshine, marking a slight dip from the peak summer months of July and August, both boasting 335 hours. This trend of abundant sunlight peaks in the summer, creating a vibrant atmosphere perfect for beach outings and outdoor activities. As we move into the fall, September still offers a generous amount of sunshine compared to the winter months ahead, such as January's mere 147 hours. This dynamic shift in daylight not only enhances the beauty of the changing leaves but also invites visitors to relish in the lingering warmth of late summer as they prepare for the cozy embrace of autumn.
In Cape Neddick, the likelihood of sunny weather in September shows a pleasant uptick at 45%, offering a refreshing change from the summer months, where sunshine dips to the lower 30s. This increase contrasts sharply with the 40% chance in January, highlighting a seasonal trend as the summer fades. While not the sunniest month of the year, September's favorable forecast suggests a promising backdrop for outdoor activities. Interestingly, as we move towards the cooler season, the chances of sun peak again in November at 54%, making September a transitional yet hopeful month for sun seekers in this charming coastal town.
As summer transitions into autumn in Cape Neddick, September brings a gentle reduction in daylight, offering approximately 12 hours of sunlight each day. This marks a gradual decline from the peak of 15 hours in June, as the days shorten and the vibrant hues of fall begin to emerge. Following the gradual tapering off from the summer months, daylight hours will continue to decrease into October, settling into the shorter days of early winter. Observing this progression, one can appreciate the rhythmic changes of nature as the season shifts from the warmth of summer to the cooler embrace of autumn, inviting moments of reflection and connection with the changing landscape.
In September, Cape Neddick experiences a gentle breeze with an average wind speed of 4.2 m/s (9 mph), presenting a slight uptick from the tranquil conditions of summer. This marks a transition from the calmer winds of July and August, which averaged 3.7 m/s (8 mph) and 3.6 m/s (8 mph), respectively. As autumn approaches, the wind begins to pick up, signaling a shift in the season's character. Notably, September's winds are more robust than those of late summer, hinting at the arrival of crisper days ahead, eventually leading to the steadier breezes typical of the following months, such as October and November. Overall, September serves as a refreshing bridge, blending the relaxed vibes of summer with the invigorating energy of fall.
The weather in Cape Neddick 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 Cape Neddick and find detailed weather information for every month.
September and January present starkly contrasting weather conditions. In September, temperatures range from a mild 9°C (49°F) at night to a warm 28°C (83°F) during the day, making it a comfortable month with an average temperature of 18°C (65°F). Although September experiences some rainfall, with around 80 mm (3.2 in) over 8 days, it typically features lower humidity at 71%. In contrast, January is characterized by frigid temperatures, with lows plunging to -19°C (-1°F) and highs reaching only 14°C (57°F), averaging around -1°C (31°F). Additionally, January sees slightly more precipitation at 87 mm (3.4 in) over 9 days and exhibits higher humidity at 86%. For more details on January weather specifics, you can check Cape Neddick weather in January.
September and February offer stark contrasts in weather. September experiences milder temperatures with averages around 18°C (65°F) and maximums reaching up to 28°C (83°F), while February is notably colder, with average temperatures hovering around 0°C (32°F) and maximums only reaching 15°C (59°F). Precipitation is slightly higher in February at 102 mm (4.0 in) compared to September's 80 mm (3.2 in), though both months see a similar number of rainy days, 8 in September and 10 in February. Furthermore, humidity is higher in February at 84%, compared to 71% in September. For a more detailed look at the weather in February, you can check here: Cape Neddick weather in February.
When comparing the weather in September and March, there are significant differences in temperature and overall conditions. September enjoys a much milder climate, with minimum temperatures around 9°C (49°F) and maximums reaching up to 28°C (83°F), making it a pleasant time of year. In contrast, March is much colder, with minimum temperatures dipping as low as -13°C (8°F) and an average high of only 14°C (58°F).
Precipitation is also more frequent in March, occurring on 10 days and totaling 94 mm (3.7 in), compared to September's 80 mm (3.2 in) over just 8 days. Furthermore, humidity levels are slightly higher in March at 82%, compared to September's 71%. These factors contribute to a starkly different feel for the two months. For a more detailed look at March conditions, visit Cape Neddick weather in March.
When comparing the weather between September and April, notable differences emerge. September tends to be milder, with average temperatures ranging from a minimum of 9°C (49°F) to a maximum of 28°C (83°F), making it a much warmer month overall. In contrast, April experiences cooler temperatures, with a minimum of -2°C (29°F) and an average high of only 20°C (69°F). Precipitation levels are also distinct; September records 80 mm (3.2 in) over 8 days, while April sees a higher total of 145 mm (5.7 in) across 12 days. Additionally, April has slightly higher humidity at 80%, compared to September's 71%. For a detailed look at Cape Neddick's April weather, you can check Cape Neddick weather in April.
When comparing the weather in September and May, it's evident that September tends to be warmer, with average temperatures reaching 18°C (65°F), while May's average is significantly lower at 12°C (53°F). September enjoys maximum temperatures of up to 28°C (83°F), compared to May's peak of 24°C (76°F). Both months experience similar levels of precipitation, with September recording 80 mm (3.2 in) over about 8 days and May slightly higher at 86 mm (3.4 in) over 10 days. Humidity remains fairly consistent between the two months, with September at 71% and May at 72%. For a closer look at the weather specifics, you can check this link: Cape Neddick weather in May.
In comparing the weather of September and June, we observe some interesting similarities and differences. Both months experience comparable temperature ranges, with September reaching a slightly higher average temperature of 18°C (65°F) compared to June's 17°C (63°F). The maximum temperatures are the same, peaking at 28°C (83°F) in both months. Additionally, September receives a bit more rainfall, totaling 80 mm (3.2 in) over 8 days, while June sees slightly less at 75 mm (2.9 in) over the same number of days. Humidity levels also remain fairly consistent, with September at 71% and June at 72%. For further details on the weather during June, you can check this link: Cape Neddick weather in June.
September weather presents a notable transition from the warmth of July. With average temperatures ranging from a minimum of 9°C (49°F) to a maximum of 28°C (83°F), September is generally cooler, featuring an average temperature of 18°C (65°F) compared to July's warmer range of 15°C (58°F) to 31°C (88°F) and an average of 21°C (70°F). Additionally, September experiences less precipitation at 80 mm (3.2 in) over 8 days, while July sees around 110 mm (4.3 in) across 11 days, indicating a slightly wetter month. Humidity levels are also marginally higher in September at 71%, compared to July's 67%. For more details on July weather, visit Cape Neddick weather in July.
In September, the weather cools off slightly compared to August, with minimum temperatures dropping to 9°C (49°F) from August's milder 14°C (57°F). The average temperature in September is also lower at 18°C (65°F), though it still manages to reach a maximum of 28°C (83°F), similar to August's high of 29°C (84°F). While both months experience a fair amount of precipitation, September sees a bit more rain with 80 mm (3.2 in) over 8 days, compared to August's 61 mm (2.4 in) over 7 days. Humidity levels are also higher in September at 71%, versus August's 66%. For more detailed insights, you can check Cape Neddick weather in August.
September generally offers milder temperatures with a minimum of 9°C (49°F) and an average high reaching 28°C (83°F). This month experiences relatively lower precipitation levels at 80 mm (3.2 in) over 8 days, combined with 71% humidity. In contrast, October sees a notable drop in temperature, with minimums dropping to 2°C (35°F) and an average high of 23°C (74°F). The month also brings increased rainfall, totaling 152 mm (6.0 in) across 13 days, and a slight rise in humidity at 78%. For more details on October weather specifics, check Cape Neddick weather in October.
September and November display contrasting weather patterns. September boasts a mild average temperature of 18°C (65°F), with maximums reaching 28°C (83°F), while November experiences much cooler averages, peaking at just 19°C (66°F) during mild days, with an average temperature of only 6°C (44°F). In addition to the shift in temperature, November brings increased precipitation, totaling 115 mm (4.5 in) over about 10 days, compared to September’s 80 mm (3.2 in) spread across 8 days. The humidity also rises in November, reaching 84%, compared to September’s 71%. For those wanting to know more about the weather during this time, you can check out Cape Neddick weather in November.
September and December exhibit stark contrasts in weather. In September, temperatures typically range from a mild 9°C (49°F) at night to a warm 28°C (83°F) during the day, making it a comfortable month with an average of 18°C (65°F). Rainfall is moderate, with about 80 mm (3.2 in) over 8 days, and humidity sits at 71%. In contrast, December brings much colder conditions, with temperatures dropping to as low as -17°C (2°F) and peaking at 14°C (58°F), resulting in an average of only 2°C (35°F). This month is also wetter, accumulating 142 mm (5.6 in) of precipitation over 10 days, coupled with higher humidity at 81%. For more details on December weather, check out Cape Neddick weather in December.
As summer gently fades, September in Cape Neddick ushers in a refreshing shift with its temperate climate. The average temperature hovers around a pleasant 18°C, offering a welcome respite from the intense heat of the peak summer months, while the occasional maximums can reach up to 28°C. This month also sees a noticeable increase in humidity at 71%, and while rainfall is moderate with 80 mm over about 8 days, it adds to the crispness of the air. Overall, September presents a balance of warm days and cooler nights, making it an ideal time to explore the stunning landscapes of Cape Neddick. For more on what to expect throughout the year, check out Cape Neddick Climate.