September Weather in Old Orchard Beach, United States

Last updated: February 24, 2025

September in Old Orchard Beach, United States, offers a delightful blend of warm sunny days and refreshing breezes. With maximum temperatures reaching up to 32°C (90°F), and an average of 18°C (65°F), the weather invites visitors to enjoy outdoor activities. However, the month does see a cooler side, with minimum temperatures dipping to 5°C (41°F). Despite the pleasant warmth, expect approximately 70 mm (2.8 in) of rainfall over seven days, contributing to a humidity level of around 71%. This combination creates a vibrant atmosphere perfect for both beachgoers and those seeking the beauty of transitioning seasons.

September Temperature in Old Orchard Beach

As summer gently yields to autumn, September in Old Orchard Beach presents a delightful transition in temperatures. With minimums around 5°C (41°F), the nights begin to cool, inviting cozy evenings. The average temperature of 18°C (65°F) creates a pleasantly mild ambiance, perfect for outdoor activities and enjoying the lingering warmth of the season. Daytime highs can reach a comfortable 32°C (90°F), allowing for a few final beach days before the chill of fall sets in. This month captures the essence of summer's warmth while hinting at the crispness of the upcoming autumn, making it a captivating time to experience this coastal paradise.

September Weather in Old Orchard Beach: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Old Orchard Beach, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec282935455566727164544132
Data source: Temperature data for Old Orchard Beach generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Old Orchard Beach

September in Old Orchard Beach brings a delightful blend of mild weather and moderate rainfall, with an average precipitation of 70 mm (2.8 in) spread over just 7 days. This marks a slight increase from the summer months, hinting at the transition to fall. The rain often adds a refreshing touch as the lingering warmth from August complements the early autumn atmosphere. Notably, September's rainfall is less than the preceding months of July and August, which saw heavier precipitation levels—120 mm (4.7 in) and 65 mm (2.5 in), respectively. However, it anticipates an uptick in October, traditionally one of the wetter months with 128 mm (5.0 in) expected. Overall, September serves as a bridge, balancing the remnants of summer's warmth with the cooler, wetter conditions that autumn brings.

September Precipitation Trends in Old Orchard Beach

The chart displays monthly precipitation patterns in Old Orchard Beach, with values for each month alongside September's data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September's conditions compare to those of other months.
JanFebMarAprMayJunJulAugSepOctNovDec81908112271701206570128107125
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Old Orchard Beach

As summer transitions into fall, September in Old Orchard Beach experiences a noticeable shift in humidity, with levels averaging around 71%. This marks a subtle increase from the drier months of July and August, which see humidity at 67% and 66%, respectively. Overall, September continues the trend of gradually rising humidity as the year progresses, following the peak of the summer season and leading into the wetter fall months. Compared to the winter months where humidity hovers around the mid-80s, September offers a more moderate experience, making it a pleasant time for beachgoers seeking to enjoy the lingering warmth before autumn truly sets in.

September Average Humidity in Old Orchard Beach

This chart illustrates the average monthly humidity levels in Old Orchard Beach, with September's data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, allowing you to see how September's humidity levels compare to other months.
JanFebMarAprMayJunJulAugSepOctNovDec86%84%82%80%72%72%67%66%71%79%84%81%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Old Orchard Beach

As September rolls into Old Orchard Beach, the UV Index starts to decline from the peak summer months yet remains significant, with a UV Index of 7 that falls under the high exposure category. This means that while you can enjoy outdoor activities, it's essential to stay vigilant, as unprotected skin can still burn after approximately 25 minutes of sun exposure. Following the intense UV levels of 9 in May and 10 during June, the gradual decrease indicates a transition toward cooler autumn days, but don’t be fooled—sun protection is still crucial! For more details on UV levels and safety tips, check out Old Orchard Beach UV Index.

Maximum UV Index Levels in Old Orchard Beach for September

The chart shows the monthly maximum UV Index (UVI) for Old Orchard Beach in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues.
JanFebMarAprMayJunJulAugSepOctNovDec2457910987532
Data source: Old Orchard Beach September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

September Sunshine in Old Orchard Beach

In Old Orchard Beach, September basks in a warm embrace of sunlight, with an impressive 288 hours of sunshine that marks a vibrant close to summer. This month sees a gentle decline from the summer peak, where July and August dazzled with over 330 hours of radiant light, yet it still outshines earlier months like April and May. As the leaves hint at autumn's arrival, September remains a splendid time to enjoy the lingering warmth, allowing residents and visitors alike to soak in the sun's golden glow before the cooler months set in. The trend reveals a seasonal rhythm, where each passing month brings a gradual shift, but September proudly holds on to the sun's embrace just a little longer.

Monthly Sunshine Duration in Old Orchard Beach: September Highlighted

The September sunshine duration represents the total number of hours Old Orchard Beach experiences direct sunlight during the month of September, excluding cloudy or obstructed periods. This chart compares the sunshine duration of September with the other months of the year.
JanFebMarAprMayJunJulAugSepOctNovDec148h182h256h244h294h329h333h336h288h216h190h174h
Data source: Old Orchard Beach September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Old Orchard Beach During September

In Old Orchard Beach, September boasts a 43% chance of sunny weather, marking a notable improvement from the summer months, where sunny days dipped as low as 29% in July. As summer transitions to fall, the likelihood of sunshine begins to stabilize, showing a modest but positive trend compared to the surrounding months. While still lower than the peak sunshine rates of early spring, like March’s impressive 62%, September offers a pleasant wind-down to the warmer season, making it an appealing time to soak in the final rays of summer before the chill of autumn sets in.

Percentage of Sunny Days in September in Old Orchard Beach

The chart illustrates the percentage of sunny days in Old Orchard Beach throughout the year, with September highlighted. It highlights the variation in sunshine across each month and provides an overview of the typical frequency of sunny days, offering insights into how often Old Orchard Beach experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec41%37%62%37%37%39%29%32%43%37%55%33%
Data source: Old Orchard Beach September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Old Orchard Beach in September

In Old Orchard Beach, September marks the transition from the long, sun-drenched days of summer to the shorter, cozy days of autumn. With approximately 12 hours of daylight, this month signifies a gentle decline in sunlight, following the peak of 15 hours seen in June and July. As the vibrant summer fades, September invites a softer glow, allowing residents and visitors to enjoy the lingering warmth while embracing the early whispers of fall. This gradual change serves as a reminder of the cyclical nature of the seasons, where each month gracefully leads into the next, creating a rhythm marked by both light and shadow.

Average Daylight Hours in Old Orchard Beach for September

The chart illustrates the variation in daylight duration in Old Orchard Beach throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec9h 20m10h 30m11h 58m13h 27m14h 43m15h 21m15h13h 52m12h 26m10h 57m9h 39m8h 58m
Data source: Old Orchard Beach daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Old Orchard Beach

As summer gracefully transitions into autumn, September in Old Orchard Beach witnesses a gentle increase in wind speeds, averaging 3.3 m/s (7 mph). This modest rise follows the quieter breezes of July and August, which regularly hovered around 2.8 to 2.9 m/s (6 mph), signaling a shift towards more invigorating coastal conditions. The month provides a perfect blend of warmth and fresh air, hinting at the crispness that October will bring. Overall, September's winds serve as a delightful reminder of nature’s rhythmic changes, encouraging residents and visitors alike to embrace the vibrant beach atmosphere before the chill of winter descends.

Average September Wind Speed in Old Orchard Beach

The chart displays monthly wind speed patterns in Old Orchard Beach, with values for each month shown alongside September's data, which is highlighted for easy comparison. It illustrates the average wind speed, offering insights into how September's wind conditions compare to the rest of the year.
JanFebMarAprMayJunJulAugSepOctNovDec3.63.64.23.63.43.52.92.83.3 m/s3.43.63.7
Data source: Old Orchard Beach September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Old Orchard Beach Compares to Other Months

The weather in Old Orchard Beach 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 Old Orchard Beach and find detailed weather information for every month.

In September, temperatures vary significantly, ranging from a chilly 5°C (41°F) at night to a warm 32°C (90°F) during the day, with an average of 18°C (65°F). The month experiences moderate precipitation at 70 mm (2.8 in) over seven days, coupled with a humidity level of 71%. In contrast, January brings much colder weather, with temperatures plunging to a minimum of -21°C (-6°F) and peaking at only 16°C (61°F) for an average of -2°C (28°F). This winter month sees slightly higher precipitation at 80 mm (3.2 in) across eight days and a higher humidity level of 86%. For more specific insights into winter conditions, you can check the details here: Old Orchard Beach weather in January.

September and February present starkly contrasting weather patterns. In September, temperatures can range from a mild 5°C (41°F) at night to a warm 32°C (90°F) during the day, with an average of 18°C (65°F). The month experiences about 70 mm (2.8 in) of precipitation over approximately 7 days and maintains a humidity level of 71%. Conversely, February is much colder, with temperatures dipping as low as -18°C (0°F) and peaking at a more moderate 20°C (68°F), averaging around -2°C (29°F). This winter month sees higher precipitation at 90 mm (3.6 in) across about 10 days, along with increased humidity of 84%. For more details about February's weather, you can visit Old Orchard Beach weather in February.

September and March present contrasting weather experiences. In September, temperatures range from a pleasant 5°C (41°F) to a warm maximum of 32°C (90°F), with an average of 18°C (65°F), making it ideal for outdoor activities. The month sees about 70 mm (2.8 in) of precipitation over approximately 7 days, and humidity levels hover around 71%. In stark contrast, March is much colder, with temperatures ranging from a frigid -18°C (0°F) to a maximum of 20°C (68°F), and an average of only 2°C (35°F). Precipitation is slightly higher at 81 mm (3.2 in) over about 10 days, along with elevated humidity levels of 82%. For more details on the weather in March, you can check Old Orchard Beach weather in March.

September and April exhibit marked differences in weather conditions. September tends to be warmer, with average temperatures around 18°C (65°F) and highs reaching up to 32°C (90°F), while April averages a cooler 7°C (46°F) with maximum temperatures of 29°C (84°F). In terms of precipitation, April is wetter, receiving about 122 mm (4.8 in) over 12 days, compared to September's 70 mm (2.8 in) over 7 days. Additionally, humidity levels are slightly higher in April at 80%, compared to September's 71%. For a more detailed look at weather patterns during this month, check out Old Orchard Beach weather in April.

September and May showcase distinct weather patterns, with September experiencing higher average temperatures. In September, temperatures range from a minimum of 5°C (41°F) to a maximum of 32°C (90°F), while May features a slightly cooler range of 2°C (35°F) to 33°C (92°F). Precipitation levels are similar in both months, with September receiving 70 mm (2.8 in) over approximately 7 days and May slightly higher at 71 mm (2.8 in) over 9 days. Humidity remains comparable, with September at 71% and May at 72%. For a more detailed look at May's weather, you can visit Old Orchard Beach weather in May.

When comparing the weather in September and June, both months exhibit similar average temperatures and precipitation levels. September generally sees a minimum temperature of 5°C (41°F) and an average of 18°C (65°F), peaking at a maximum of 32°C (90°F), while June features a minimum of 5°C (41°F) and an average of 19°C (66°F), with a slightly higher maximum of 35°C (95°F). Precipitation for both months is equal at 70 mm (2.8 in), but June tends to be slightly wetter with rain occurring over 9 days compared to 7 days in September. Humidity levels remain quite close, with September at 71% and June at 72%. For more detailed information, check out Old Orchard Beach weather in June.

When comparing the weather in September and July, it's clear that July tends to be warmer, with average temperatures reaching 22°C (72°F) and maximums peaking at 34°C (93°F). In contrast, September's average temperature drops to 18°C (65°F), with a maximum of 32°C (90°F). Precipitation also differs between the two months; July experiences more rain, totaling 120 mm (4.7 in) over 11 days, whereas September receives 70 mm (2.8 in) across 7 days. Humidity levels are fairly comparable, standing at 67% in July and slightly higher at 71% in September. For more detailed weather insights, you can check out this link: Old Orchard Beach weather in July.

In comparing the weather of September to August, September experiences a broader temperature range with minimums dropping to 5°C (41°F) compared to August's higher minimum of 11°C (52°F). The average temperature in September is slightly lower at 18°C (65°F) than August’s 22°C (72°F), and while both months can reach similar maximum temperatures, September’s peak is at 32°C (90°F) against August's 33°C (92°F). Precipitation levels are relatively similar, with September receiving 70 mm (2.8 in) over 7 days, just slightly more than August’s 65 mm (2.5 in) over 9 days. Furthermore, September shows a higher humidity level at 71%, compared to August's 66%, indicating a more humid climate as summer fades. For more detailed insights, check out Old Orchard Beach weather in August.

September typically offers warmer temperatures, with averages around 18°C (65°F) and highs reaching up to 32°C (90°F). In contrast, October sees a significant drop in average temperature to 12°C (54°F) and a minimum of 0°C (32°F), indicating the onset of cooler weather. Additionally, October experiences increased rainfall, with 128 mm (5.0 in) over 11 days compared to September's 70 mm (2.8 in) over just 7 days. The humidity also rises slightly in October, averaging 78%. For more detailed insights on weather patterns, check out Old Orchard Beach weather in October.

In September, temperatures range from a minimum of 5°C (41°F) to a maximum of 32°C (90°F), with an average of 18°C (65°F). The month experiences about 70 mm (2.8 in) of precipitation over 7 days, accompanied by a humidity level of 71%. In contrast, November brings a much cooler climate, with temperatures ranging from a minimum of -12°C (11°F) to a maximum of 23°C (73°F), averaging only 5°C (42°F). Precipitation increases to 107 mm (4.2 in) over 10 days, while humidity rises to 84%. This shift signifies a transition from the warm late summer conditions of September to the chilly fall weather typical of November. For more specific details about November weather, you can check Old Orchard Beach weather in November.

September and December present starkly contrasting weather conditions. In September, temperatures range from a mild 5°C (41°F) at night to a warm average of 18°C (65°F) during the day, with occasional highs reaching 32°C (90°F). The month experiences moderate precipitation, averaging 70 mm (2.8 in) over about 7 days, accompanied by a 71% humidity level. In contrast, December sees frigid temperatures, plummeting to a minimum of -20°C (-4°F) and averaging around 0°C (33°F), with maximum temperatures only reaching 15°C (59°F). This winter month receives a significant increase in precipitation, totaling 125 mm (4.9 in) across approximately 10 days, coupled with even higher humidity at 81%. To learn more about the specific weather variations in December, visit Old Orchard Beach weather in December.

Compare Old Orchard Beach's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Old Orchard Beach

As summer transitions to autumn, September in Old Orchard Beach showcases a delightful blend of lingering warmth and refreshing coolness, setting it apart from the neighboring months. The temperate climate offers an inviting atmosphere for beachgoers, with halcyon days and crisp evenings ideal for cozying up. Although September does witness an uptick in precipitation, this is balanced by an average humidity level that keeps the air feeling comfortable rather than stifling. This unique weather pattern allows visitors to relish a variety of outdoor activities before the colder months set in. For a deeper dive into what to expect throughout the year, check out Old Orchard Beach Climate.