Last updated: February 24, 2025
Kennebunkport in September offers a delightful blend of warm and refreshing weather, with maximum temperatures reaching 28°C (83°F) and an average of 18°C (65°F). As the summer warmth begins to fade, the minimum temperatures dip to a mild 9°C (49°F), making it a perfect time for outdoor activities. This month experiences approximately 80 mm (3.2 in) of precipitation spread over 8 days, contributing to the region's lush landscapes. With an average humidity level of 71%, September in Kennebunkport is a captivating time to enjoy the coastal charm amidst mild breezes and vibrant fall hues.
As September arrives in Kennebunkport, the summer heat begins to mellow, transitioning the cozy coastal town into the early whispers of fall. The temperatures during this month exhibit a delightful range, with minimums around 9°C (49°F) and a comfortable average of 18°C (65°F), peaking at 28°C (83°F). This cooling trend is a welcome reprieve from the sweltering summer months, as the days still hold warmth while the nights turn brisker. Notably, September marks a significant drop from the previous months, highlighting the onset of autumn, and inviting visitors to enjoy the scenic beauty without the heat of summer driving them away. With a perfect blend of warmth and freshness, Kennebunkport in September is ideal for outdoor adventures, scenic strolls, and savoring the rich hues of the changing leaves.
In September, Kennebunkport experiences a moderate precipitation level of 80 mm (3.2 in), falling over an average of 8 days throughout the month. This reflects a slight decrease compared to the heavier rains of October and April, but remains consistent with the overall trend of late summer into early fall. The September rains are notably lighter than the summer months, especially August, which recorded only 61 mm (2.4 in). However, September's precipitation hints at the approaching autumn, setting the stage for the more substantial downpours expected as the season transitions. As the year progresses, the uptick in rainfall observed in October and November further emphasizes the region's shift towards the wetter months, making September a bridge between the summer calm and the winter deluge.
In Kennebunkport, September brings a noticeable increase in humidity, as levels rise to 71% after the drier summer months. This uptick is a gentle transition from the warm, comfortable 66% in August, hinting at the approaching autumn. Throughout the year, the region experiences its highest humidity during the winter months, peaking at 86% in January, while the summer months maintain more moderate levels, reaching their lowest at 67% in July. As September unfolds, the humidity begins to mimic October's anticipated 78%, setting the stage for a shift in both temperature and atmosphere, highlighting the interplay between seasonal change and coastal climate.
As September rolls in, Kennebunkport experiences a notable shift in UV exposure, with the UV Index dropping to 7, marking a high risk level for sunburn. This is a slight decline from the very high indices of the summer months, but it still necessitates caution during outdoor activities. With a burn time of approximately 25 minutes, residents and visitors are encouraged to wear sunscreen and protective clothing when enjoying the crisp late summer air. The gradual transition to milder conditions in the coming months means that while the risk remains elevated, it's less intense than the peak summer months. For more information on UV levels throughout the year, check out Kennebunkport UV Index.
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September in Kennebunkport is a captivating blend of warm days and cooler nights, marked by 283 hours of sunshine that transition the coastal town from summer's embrace into the early hints of autumn. Following a spectacular sun-drenched summer, where July and August each basked in an impressive 335 hours of sunlight, September retains a generous amount of bright days, although slightly less than its summer counterparts. This time of year showcases a gradual decline in daylight hours, as the town prepares for the upcoming chill of fall. With less sunlight than the peak summer months, yet significantly more than the winter, September offers a perfect opportunity for both scenic strolls along its beaches and visits to quaint shops, making it an alluring time to explore Kennebunkport’s charm before winter sets in. The radiant September sunshine complements the changing foliage, painting the landscape in rich hues that enchant both locals and visitors alike.
As summer transitions into fall, the likelihood of sunny weather in September in Kennebunkport sees a notable uptick, with a 45% chance of sunshine. This marks a welcome shift from the more overcast months of July and August, which offer only 32% and 33% respectively. While earlier months such as March enjoy a peak 61% likelihood of sun, September stands out as a favorable option for those seeking pleasant weather after the summer haze. Interestingly, the sunny probabilities gradually decline into the autumn months, particularly in October with 37%. Therefore, September presents a sweet spot for enjoying the outdoors amidst the stunning coastal landscapes, before the chill of winter begins to set in.
As summer fades, September in Kennebunkport ushers in a gentle reduction in daylight, with 12 hours of sun gracing the shoreline. This marks a subtle decline from the 14 hours experienced in July, reflecting the transition into the cozy embrace of autumn. The daylight hours begin to shorten in a steady rhythm, following a trajectory that began with the rich 15 hours of June and, more recently, the twilight of August's 13 hours. As nature shifts gears, September's daylight serves as a reminder of the changing seasons, paving the way for the cooler months ahead while still offering ample time to enjoy the scenic beauty of this coastal gem.
As September settles in Kennebunkport, the crispness of fall begins to ripple through the air, with wind speeds averaging 4.2 m/s (9 mph)—a slight uptick from the languid summer months. This gentle breeze contrasts sharply with the stronger gusts earlier in the year; while winter roars with an average of 5.0 m/s (11 mph) in January and February, the summer months quiet at only 3.6 m/s (8 mph) in August. The transition to autumn brings a refreshing vigor, hinting at the change of seasons while maintaining a pleasant atmosphere for residents and visitors alike. With each passing day, the wind carries the scent of leaves changing color, inviting everyone to embrace the beauty of this tranquil coastal town as it prepares for the cooler months ahead.
The weather in Kennebunkport 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 Kennebunkport and find detailed weather information for every month.
September and January showcase drastically different weather patterns. In September, temperatures range from a mild 9°C (49°F) at night to a warm 28°C (83°F) during the day, with an average temperature of 18°C (65°F). The month sees about 80 mm (3.2 in) of precipitation over approximately 8 days, accompanied by a humidity level of 71%. In stark contrast, January experiences much colder conditions, with temperatures plummeting to a minimum of -19°C (-1°F) and averaging -1°C (31°F), peaking at just 14°C (57°F). This winter month also has similar precipitation levels at 87 mm (3.4 in) but on 9 days, coupled with higher humidity at 86%. For more details, you can refer to Kennebunkport weather in January.
In comparing the weather of September and February, a stark contrast emerges. September boasts milder temperatures, with a minimum of 9°C (49°F) and a pleasant average of 18°C (65°F), peaking at 28°C (83°F). The month features 80 mm (3.2 in) of precipitation over approximately 8 days, accompanied by a humidity level of 71%. In contrast, February experiences much colder conditions, where temperatures can drop to a minimum of -15°C (5°F), with an average of 0°C (32°F) and a maximum reaching only 15°C (59°F). Though it has slightly more precipitation at 102 mm (4.0 in) across about 10 days, the humidity is higher at 84%. For more detailed information, you can check out Kennebunkport weather in February.
September and March present quite contrasting weather experiences. In September, temperatures range from a mild 9°C (49°F) at night to a warm 28°C (83°F) during the day, with an average of 18°C (65°F). Rainfall is moderate at 80 mm (3.2 in) over about 8 days, and the humidity sits at 71%, creating a comfortable atmosphere. In stark contrast, March is much colder, with temperatures dipping as low as -13°C (8°F) at night and peaking at only 14°C (58°F) during the day, resulting in an average temperature of just 2°C (36°F). Precipitation increases slightly to 94 mm (3.7 in) over roughly 10 days, accompanied by a higher humidity level of 82%. For more detailed insights, you can check out Kennebunkport weather in March.
When comparing the weather in September and April, a stark contrast emerges. September typically boasts milder temperatures, with averages around 18°C (65°F) and maximums reaching up to 28°C (83°F), while April sees much cooler conditions, with average temperatures hovering at 7°C (45°F) and maximums hitting 20°C (69°F). In terms of precipitation, April is significantly wetter, receiving 145 mm (5.7 in) over 12 days compared to September's 80 mm (3.2 in) across 8 days. Additionally, humidity levels are slightly higher in April at 80%, compared to 71% in September. For more details on April's climate, you can check out Kennebunkport weather in April.
September generally offers warmer temperatures compared to May, with averages around 18°C (65°F) and highs reaching up to 28°C (83°F), whereas May has cooler averages of 12°C (53°F) and a maximum of 24°C (76°F). Both months have similar levels of humidity, hovering around 71-72%, but September tends to experience slightly less rainfall, averaging 80 mm over 8 days compared to May's 86 mm over 10 days. For more detailed weather information specific to May, you can check Kennebunkport weather in May.
When comparing the weather in September and June, we see some interesting similarities and differences. Both months experience a maximum temperature of 28°C (83°F), but September tends to be slightly warmer on average, with 18°C (65°F) compared to June's 17°C (63°F). The minimum temperatures are quite close as well, with September at 9°C (49°F) and June at 8°C (47°F). Precipitation levels are fairly comparable; September receives a bit more at 80 mm (3.2 in) over 8 days, while June totals 75 mm (2.9 in) over the same number of days. Humidity levels remain consistent, with September at 71% and June slightly higher at 72%. For a closer look at the specifics of June weather, check out Kennebunkport weather in June.
The weather in September tends to be milder compared to July, with average temperatures ranging from a minimum of 9°C (49°F) to a maximum of 28°C (83°F), while July experiences higher temperatures with a minimum of 15°C (58°F) and a maximum of 31°C (88°F). September sees around 80 mm (3.2 in) of precipitation over 8 days and a slightly higher humidity level at 71%, whereas July has 110 mm (4.3 in) of precipitation over 11 days, accompanied by a lower humidity of 67%. Overall, September offers a cooler, drier transition into autumn, whereas July presents a warmer, more humid summer experience. For more details on July weather specifics, you can visit Kennebunkport weather in July.
In comparing the weather between August and September, August tends to be warmer overall, with average temperatures ranging from a minimum of 14°C (57°F) to a maximum of 29°C (84°F) compared to September's cooler range of 9°C (49°F) to 28°C (83°F). While both months see a similar number of rainy days—7 in August and 8 in September—September experiences slightly more precipitation at 80 mm (3.2 in) versus August's 61 mm (2.4 in). Additionally, September has a higher humidity level at 71%, compared to August's 66%. For more details, you can check out Kennebunkport weather in August.
September and October exhibit noticeable differences in weather patterns. In September, temperatures range from a mild minimum of 9°C (49°F) to a warm maximum of 28°C (83°F), with an average of 18°C (65°F). The month sees a total precipitation of 80 mm (3.2 in) across about 8 days, along with a humidity level of 71%. In contrast, October brings a significant drop in temperatures, with a minimum of 2°C (35°F) and an average of just 13°C (56°F), peaking at 23°C (74°F). Rainfall increases to 152 mm (6.0 in) over approximately 13 days, and humidity rises slightly to 78%. For more detailed insights, check Kennebunkport weather in October.
September and November show a stark contrast in weather patterns. In September, temperatures range from a mild minimum of 9°C (49°F) to a warm maximum of 28°C (83°F), with an average of 18°C (65°F). The month experiences a relative humidity of 71% and about 80 mm of rainfall over 8 days. In contrast, November sees much cooler temperatures, dropping to a minimum of -10°C (14°F) and an average of only 6°C (44°F), while peaking at 19°C (66°F). Precipitation increases to 115 mm over 10 days, and humidity rises to 84%, contributing to a much more damp and chilling atmosphere. For more details about November's conditions, you can check Kennebunkport weather in November.
In September, the weather is notably milder, with temperatures ranging from a minimum of 9°C (49°F) to a maximum of 28°C (83°F) and an average of 18°C (65°F). This month experiences about 80 mm (3.2 in) of precipitation over 8 days, accompanied by a humidity level of 71%. In contrast, December brings a stark change, as temperatures plunge to a minimum of -17°C (2°F) and only reach an average maximum of 14°C (58°F), with an overall average of just 2°C (35°F). December is also wetter, featuring 142 mm (5.6 in) of precipitation across 10 days and a higher humidity level at 81%. For more details about the weather conditions during this winter month, visit Kennebunkport weather in December.
As summer fades into autumn, Kennebunkport experiences a delightful transition in September, where the average temperature settles at a comfortable 18°C (65°F). This month stands out with its mix of warm days reaching up to a maximum of 28°C (83°F), contrasted by cooler nights dipping to around 9°C (49°F). While rainfall is moderate with about 80 mm over six to eight days, the humidity remains high at 71%, creating a unique blend of crispness in the air. The milder temperatures and occasional showers signal the onset of fall, making September an enchanting time to visit. For a more in-depth look at what to expect throughout the year, check out Kennebunkport Climate.