Last updated: February 24, 2025
In September, Cape May, United States experiences a delightful transition into early autumn, with average temperatures settling around 22°C (72°F). The month can peak with maximum highs of 29°C (85°F), while cooler nights dip to minimums of 13°C (56°F). Rain is not uncommon, with total precipitation reaching 107 mm (4.2 in) over approximately 10 days. The humidity levels hover around 75%, creating a pleasant yet slightly moist atmosphere, perfect for enjoying the beautiful coastal scenery and vibrant fall foliage.
In September, Cape May begins to transition from the warmth of summer to the coolness of fall, offering a delightful blend of temperatures. The minimum temperature sits comfortably at 13°C (56°F), while the average climbs to about 22°C (72°F). With maximums reaching a pleasant 29°C (85°F), this month remains ideal for beachgoers and outdoor enthusiasts alike. The refreshing drop in evening temperatures signals the change of seasons, creating a harmonious balance that invites visitors to enjoy the lingering summer sun while also preparing for the crisp autumn air ahead.
September in Cape May brings a moderate level of precipitation, with an average of 107 mm (4.2 in) of rainfall spread over approximately 10 days. This month follows the wetter summer months, where July notched the highest rainfall at 129 mm (5.1 in), while August saw 115 mm (4.5 in). Compared to September, these summer months create a vivid transition into the fall season. As temperatures begin to cool, September's precipitation level remains significant but represents a slight decrease, hinting at the upcoming drier autumn months, particularly October, which typically sees a rise in rainfall to 142 mm (5.6 in) despite fewer precipitation days. This pattern showcases a dynamic shift in Cape May's weather, marking the seasonal ebb and flow of rain throughout the year.
In September, Cape May experiences a moderate humidity level of 75%, marking a subtle transition as summer wanes. Throughout the year, humidity begins at a high of 84% in January and generally trends downward, hitting its low of 72% in August. This decrease reflects the region's warming months, where comfortable coastal breezes usher in drier air. As autumn approaches, however, humidity sees a slight uptick again in October at 81%, indicating the impending return of cooler, moisture-laden air. September thus serves as a delightful buffer, presenting that ideal blend of warmth and freshness, characteristic of early fall by the seaside.
As summer transitions into fall in Cape May, September maintains a very high UV Index of 8, reflecting the lingering intensity of the sun's rays. With a burn time of just 15 minutes, it’s crucial for residents and visitors to stay vigilant about sun protection. This month’s UV Index follows a trend seen throughout the summer, where values consistently peaked at 10, showcasing a season of strong solar exposure. Though September marks a slight dip, it’s a reminder that sun safety remains vital even as the warm weather begins to wane. As you enjoy the beaches and outdoor activities, don’t forget to check the daily UV Index for smart sun practices! For more details, visit Cape May UV Index.
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September in Cape May ushers in a delightful transition from the summer's vibrant glow to the softer hues of autumn. With 285 hours of sunshine, this month still basks in the warmth that peaks in July with 361 hours, before gradually tapering off in October. As the summer sun begins to fade, September plays a pivotal role in extending those beautiful beach days, offering a perfect balance of warmth and comfort. Travelers can enjoy pleasant afternoons, complemented by cooler evenings, making it an ideal time for outdoor activities and leisurely strolls along the picturesque coastline. The slight decrease in sunlight hours sets the stage for a serene, inviting ambiance, showcasing Cape May's charm as summer gracefully gives way to fall.
As summer transitions into autumn, September in Cape May brings a notable increase in sunny weather, with a 56% chance of sunshine—one of the highest probabilities for the year. This period marks a shift from the warmer months, where July boasted a peak chance of 54%, but September's sunny outlook often surprises visitors. While the summer months typically see less reliable sunshine, September stands out as a delightful time to enjoy the beach, with clear skies frequently accompanying the start of fall. Interestingly, the likelihood of clear weather begins to climb again after the relative dip in August, which only had a 36% chance of sun, hinting at a more stable transition into autumn.
As summer transitions into autumn, Cape May experiences a gradual decrease in daylight hours throughout September, offering about 12 hours of sunlight—a slight dip from the 13 hours enjoyed in August. This subtle shift marks the beginning of the fall season, where days begin to shorten more noticeably. Following the vibrant long days of June and July, which host a perfect 14 hours of daylight, September serves as a gentle reminder of the impending cooler months. With each passing week, the rhythm of day and night shifts, preparing the picturesque coastal town for the cozy atmosphere that autumn brings, culminating in a gradual decrease down to 11 hours by October.
As summer wanes and September unfolds in Cape May, the average wind speed gently picks up to 5.0 m/s (11 mph), creating a refreshing ambiance after the sultry months. Compared to the calm of August, where winds barely reached 3.7 m/s (8 mph), this increase signals the transition into autumn. The breeze invigorates the coastal atmosphere, providing a perfect backdrop for beachgoers and nature enthusiasts alike. Looking ahead, October brings a slight uptick in wind speed to 5.4 m/s (12 mph), hinting at the seasonal shift towards more dynamic weather patterns as the year draws to a close. This ebb and flow of the winds encapsulates the essence of Cape May: a harmonious blend of tranquility and vibrant change.
The weather in Cape May 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 May and find detailed weather information for every month.
September and January present a stark contrast in weather conditions. In September, temperatures range from a mild 13°C (56°F) to a warm 29°C (85°F), with an average of 22°C (72°F). The month sees moderate rainfall of 107 mm (4.2 in) over about 10 days and maintains a comfortable humidity level of 75%. In contrast, January experiences much colder temperatures, with lows plummeting to -12°C (11°F) and an average of only 3°C (38°F), peaking at 16°C (62°F). Precipitation is less prevalent at 74 mm (2.9 in) over 9 days, but humidity rises to 84%, adding to the chill in the air. For more detailed insights into January weather, visit Cape May weather in January.
September and February offer contrasting weather experiences. In September, temperatures range from a mild 13°C (56°F) to a warm 29°C (85°F), with an average of 22°C (72°F). The month sees about 107 mm (4.2 in) of precipitation over 10 days, and humidity levels sit around 75%. In stark contrast, February brings much colder conditions, with minimum temperatures plummeting to -11°C (12°F) and a maximum of 15°C (60°F), averaging only 5°C (40°F). This winter month experiences slightly higher precipitation at 113 mm (4.4 in) over 12 days, alongside an increased humidity level of 83%. For a deeper understanding of the winter climate, you can refer to Cape May weather in February.
When comparing the weather in September and March, it's clear that these two months exhibit striking differences. September typically enjoys a milder climate, with average temperatures ranging from a minimum of 13°C (56°F) to a maximum of 29°C (85°F), making it a pleasant time of year. In contrast, March experiences much cooler temperatures, with averages between -4°C (24°F) and 20°C (68°F). Both months receive similar levels of precipitation, around 107 mm (4.2 in) in September and a slightly higher 111 mm (4.4 in) in March, with precipitation occurring on about 10 days in each month. However, humidity levels are higher in March at 83%, compared to 75% in September. For a closer look at March weather, you can visit Cape May weather in March.
When comparing the weather in September and April, it is evident that September tends to be warmer and drier. September boasts average temperatures ranging from a mild 22°C (72°F) to a high of 29°C (85°F), while April sees cooler averages with temperatures peaking at 25°C (78°F). In terms of precipitation, September receives slightly more rainfall at 107 mm (4.2 in) over about 10 days compared to April's 94 mm (3.7 in) across 11 days. Additionally, April's humidity is higher at 81%, making the air feel a bit more damp than in September, where humidity sits at 75%. For more detailed insights into April weather, check out Cape May weather in April.
When comparing the weather in September and May, September tends to be warmer, with average temperatures reaching 22°C (72°F) and maximums of 29°C (85°F). In contrast, May is cooler, with average temperatures around 16°C (61°F) and a maximum of 27°C (81°F). Both months experience notable precipitation, with May seeing slightly more at 125 mm (4.9 in) over 12 days compared to September's 107 mm (4.2 in) across 10 days. Humidity levels are similar, with September at 75% and May slightly higher at 78%. For a more detailed look at May's weather, check out Cape May weather in May.
When comparing the weather in September and June, both months share similar temperature ranges, with minimal differences in their averages and extremes. September sees a minimum temperature of 13°C (56°F) and can reach up to 29°C (85°F), while June has a slightly higher maximum at 30°C (85°F). Despite these similarities, September experiences more precipitation, averaging 107 mm (4.2 in) over about 10 days, compared to June's 77 mm (3.0 in) over 9 days. Humidity levels are also high in both months, with September at 75% and June slightly higher at 79%. For a closer look at June weather in Cape May, check out Cape May weather in June.
Comparing the weather in September and July reveals some notable differences. September generally experiences cooler temperatures, with a minimum of 13°C (56°F) and an average of 22°C (72°F), whereas July tends to be warmer, featuring a minimum of 19°C (67°F) and an average of 25°C (78°F). Precipitation levels are somewhat similar, with September receiving 107 mm (4.2 in) over about 10 days, while July has a slightly higher total of 129 mm (5.1 in) also spread across 10 days. Humidity levels remain consistent between the two months, with September at 75% and July at 74%. For more details on July weather specifically, you can refer to Cape May weather in July.
In comparison to August, September experiences cooler temperatures with a minimum of 13°C (56°F) and an average of 22°C (72°F), whereas August boasts a higher minimum of 18°C (65°F) and an average of 25°C (77°F). The maximum temperatures in both months are quite similar, with September peaking at 29°C (85°F) and August reaching 30°C (86°F). Precipitation is slightly lower in September at 107 mm (4.2 in) over 10 days, compared to August's 115 mm (4.5 in) over 14 days. Interestingly, September has a higher humidity level of 75%, making it feel more humid despite the cooler overall temperatures. For more details, check out Cape May weather in August.
September presents warmer temperatures with an average of 22°C (72°F) and maximums reaching up to 29°C (85°F), making it feel quite pleasant even as the month comes to a close. However, October brings a noticeable drop in temperature, with an average of 18°C (64°F) and minimums dipping to 7°C (45°F). While both months experience rainfall, October sees increased precipitation at 142 mm (5.6 in) compared to September's 107 mm (4.2 in). Additionally, humidity rises slightly in October to 81%, adding to the crispness of the air. For more details about the October climate, you can refer to Cape May weather in October.
September and November showcase a stark contrast in weather. In September, temperatures are generally warmer, with minimums around 13°C (56°F) and maximums reaching 29°C (85°F), creating an average of 22°C (72°F). The humidity sits at a moderate 75%, along with 107 mm (4.2 in) of precipitation over about 10 days. In contrast, November experiences cooler conditions, with minimum temperatures dropping to -3°C (27°F) and average temperatures around 10°C (51°F). The maximum temperature is milder at 22°C (71°F), but the increased humidity of 85% brings a different feel to the air. November also sees slightly less precipitation at 90 mm (3.5 in) across 8 days. For more detailed insights, you can check out Cape May weather in November.
September and December present stark contrasts in weather conditions. In September, temperatures range from a mild 13°C (56°F) to a warm 29°C (85°F), with an average of 22°C (72°F), while December sees a significant drop, with minimum temperatures reaching -7°C (20°F) and an average of only 6°C (44°F). Rainfall is somewhat similar, with September receiving 107 mm (4.2 in) over 10 days and December slightly higher at 118 mm (4.6 in) over 11 days, though December's humidity is elevated at 84% compared to September's 75%. For a closer look at December's weather in Cape May, check out this link: Cape May weather in December.
As summer transitions into autumn, September in Cape May offers a delightful blend of warmth and refreshing breezes. With average temperatures hovering around a comfortable 22°C (72°F), the days still echo the heat of summer, but the nights cool down to a pleasant 13°C (56°F). Though the month experiences about 10 days of rain, with total precipitation reaching 107 mm (4.2 in), it doesn't dampen the vibrant atmosphere of this coastal gem. The humidity level remains high at approximately 75%, yet the crispness of early fall begins to emerge, setting September apart from the sultry summer months. For an in-depth look at how September fits into the broader context of weather patterns, explore Cape May Climate.