Last updated: February 24, 2025
In September, Wilmington experiences a vibrant transition into autumn, marked by an average temperature of 25°C (76°F). Daytime highs can soar up to a maximum of 34°C (93°F), while evenings cool down to a refreshing minimum of 11°C (52°F). This month is also notable for its rainy days, with approximately 215 mm (8.5 in) of precipitation over 13 days. The consistent humidity level of 79% fosters a lush atmosphere, enhancing the overall experience of the coastal charm that Wilmington has to offer.
As September rolls in, Wilmington experiences a delightful transition from the summer heat, settling into a cozy climate that encourages outdoor activities. With minimum temperatures around 11°C (52°F) and averages peaking at 25°C (76°F), the month strikes a perfect balance between warmth and cooler breezes. Residents can still relish the tail end of summer warmth, especially on those sunny days where temperatures can soar to 34°C (93°F). This gradual drop in warmth signals the onset of autumn, with nights becoming cooler and inviting wrap-up layers for evening outings. Overall, September in Wilmington is a charming blend of summer's remnants and the refreshing hints of fall, making it an ideal time to enjoy the city's scenic parks and vibrant community events.
September in Wilmington marks a notable peak in precipitation, with 215 mm (8.5 in) of rainfall over approximately 13 days. This surge signifies the transition from summer to fall, as the city experiences one of its wettest months, outpacing both August and the preceding months. The trend suggests an increase in moisture-laden storms typical for the late summer to early autumn period, contributing to a lush environment. Following September, precipitation levels drastically drop, highlighting a significant shift as October approaches, with only 67 mm (2.6 in) expected. This pattern emphasizes the region's dynamic climate and underscores September as a critical month for water accumulation before the dryer fall season sets in.
As summer transitions into fall, September marks a subtle dip in humidity for Wilmington, with levels dropping to 79%. This slight reduction is part of a broader trend observed throughout the year; while winter months boast higher humidity levels, peaking at 85% in January and November, the warmer months consistently hover around the 80% mark. Interestingly, September's lower humidity signals the anticipation of cooler weather ahead, contrasting with the mugginess of the summer months. As the year progresses, this gradual decrease not only offers a refreshing change but also hints at the seasonal shifts that define Wilmington's climate.
In Wilmington, the UV Index during September is marked at 9, categorizing it as very high, which indicates a notable trend as summer transitions into fall. This month, the burn time remains at 15 minutes, a significant reduction from earlier in the season, where the index peaked at 11 in both May through July. The gradual decline from August's 10 reflects a shift towards milder sunlight intensity, yet caution is still necessary to protect your skin during outdoor activities. As the UV Index decreases toward the coming months, it’s vital to stay informed about these fluctuations and adapt your sun safety practices accordingly. For more detailed information on sun exposure risks throughout the year, check the Wilmington UV Index.
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As summer gently transitions into fall, September in Wilmington boasts an impressive 298 hours of sunshine, making it one of the sunniest months of the year. This delightful abundance of sunlight follows the peak summer months of July and August, which enjoy 337 and 319 hours respectively. The vibrant warmth of September encourages outdoor activities and captures the essence of early autumn, while still retaining a hint of summer's glow. As days gradually shorten toward winter, September stands out, bridging the long, sunlit days of summer with the cooler months ahead, reflecting the region's dynamic climatic tapestry.
As summer fades into autumn, September in Wilmington offers a refreshing return to sunnier skies with a 55% chance of sun. This marks a significant increase compared to the more gloomy mid-summer months of June and July, where the sun shines only about 29% and 41% of the time, respectively. While the spring months display greater variability, with April peaking at 60%, September embodies a delightful balance, allowing residents and visitors alike to enjoy the outdoors before cooler weather sets in. Interestingly, this month stands out amidst the typical fall shift where October and November also see a 47% and 60% chance of sunny days, respectively. Overall, September serves as a graceful transition into autumn, promising ample sunshine and mild temperatures.
As summer fades into autumn, Wilmington, North Carolina experiences a gentle decline in daylight duration. September offers about 12 hours of sunlight, a slight decrease from the 14 hours enjoyed in the peak of summer. This transition signifies the gradual shift toward shorter days as the year progresses. October will further reduce daylight to 11 hours, while the months of winter loom ahead, bringing notably shorter days. Overall, Wilmington's daylight patterns reflect the rhythmic ebb and flow of the seasons, showcasing a beautiful dance between light and darkness as nature prepares for a cooler climate.
As summer fades in Wilmington, September witnesses a subtle shift in wind patterns, with average wind speeds dropping to 2.9 m/s (6 mph). This marks a slight uptick from August’s low of 2.5 m/s (6 mph), signaling the onset of fall. Over the course of the year, wind speeds have shown a general decline from their peak in the spring months, reflecting a transition as the days grow shorter and cooler. With September’s gentle breezes, it offers a pleasant backdrop for outdoor activities, reminding us of the season's softening grip before the more invigorating winds of autumn arrive.
The weather in Wilmington 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 Wilmington and find detailed weather information for every month.
When comparing the weather in September and January, we see a dramatic shift in temperature and precipitation patterns. September boasts warm temperatures that range from a minimum of 11°C (52°F) to a maximum of 34°C (93°F), with an average of 25°C (76°F). In contrast, January experiences much colder conditions, with temperatures dropping to a minimum of -9°C (16°F) and only reaching a maximum of 25°C (76°F), while the average temperature sits at 9°C (48°F). Additionally, September is marked by higher rainfall, receiving 215 mm (8.5 in) over 13 days, compared to January's significantly lower 69 mm (2.7 in) spread over just 9 days. Notably, January's humidity at 85% is slightly higher than September's 79%, suggesting a chillier yet damp atmosphere. For in-depth details on January weather, check out Wilmington weather in January.
September and February present contrasting weather patterns. In September, temperatures range from a minimum of 11°C (52°F) to a maximum of 34°C (93°F), with an average of 25°C (76°F). The month experiences significant rainfall, with 215 mm (8.5 in) spread over 13 days and humidity levels hovering around 79%. In stark contrast, February features cooler temperatures, with a minimum of -4°C (25°F) and a maximum of 25°C (77°F), yielding an average of 12°C (53°F). Precipitation in February is lower, totaling 103 mm (4.1 in) over 10 days, and humidity rises slightly to 82%. For more details on February weather, check out Wilmington weather in February.
In September, the weather tends to be warm, with average temperatures around 25°C (76°F) and highs reaching up to 34°C (93°F). This month also experiences significant rainfall, averaging 215 mm (8.5 in) over about 13 days, contributing to a humidity level of 79%. In contrast, March brings much cooler temperatures, with averages around 13°C (56°F) and mild highs of 28°C (82°F). Precipitation is considerably lower in March at 73 mm (2.9 in) over 9 days, and humidity remains relatively high at 81%. For a more detailed look at weather conditions during this month, visit Wilmington weather in March.
In comparing the weather of September and April, September tends to be warmer, with average temperatures reaching 25°C (76°F) and maximums climbing as high as 34°C (93°F). In contrast, April's average temperature is milder at 18°C (64°F), with max temperatures peaking at 29°C (84°F). Precipitation is another noticeable difference; September experiences significantly more rain, totaling 215 mm (8.5 in) over 13 days, while April sees only 97 mm (3.8 in) across 9 days. Both months maintain high humidity levels, with September at 79% and April slightly higher at 80%. For more detailed insights, you can check out Wilmington weather in April.
September and May exhibit notable differences in weather patterns. September tends to be warmer overall, with average temperatures reaching 25°C (76°F) and a maximum of 34°C (93°F), compared to May's average of 22°C (72°F) and a maximum of 36°C (96°F). However, May experiences slightly lower precipitation levels, with 112 mm (4.4 in) over 10 days, while September sees a significant 215 mm (8.5 in) across 13 days. Humidity levels are relatively similar, with September at 79% and May slightly higher at 81%. For more detailed insights, check out Wilmington weather in May.
September and June present similar temperature ranges, with both months experiencing minimums around 11-12°C (52-55°F) and maximums peaking at 34°C (93°F). The average temperature in both months hovers around 25°C (77°F). However, September tends to be wetter, receiving 215 mm (8.5 in) of precipitation over 13 days compared to June's 156 mm (6.1 in) over 18 days. Humidity levels are also slightly higher in September at 79%, compared to 81% in June. For a closer look at June's climate, visit Wilmington weather in June.
When comparing the weather in September and July, we notice distinct differences in temperature and precipitation patterns. September typically has a wider temperature range, with a minimum of 11°C (52°F) and a maximum of 34°C (93°F), averaging 25°C (76°F). In contrast, July displays warmer temperatures, with a minimum of 17°C (63°F) and a maximum of 33°C (92°F), averaging 27°C (80°F).
In terms of precipitation, September receives more rain, totaling 215 mm (8.5 in) over 13 days, while July experiences 169 mm (6.6 in) across 18 days. Both months exhibit high humidity, but September is slightly lower at 79% compared to July's 81%. For more specific details about July weather conditions, you can visit Wilmington weather in July.
In September, temperatures tend to be slightly cooler than in August, with minimums dropping to 11°C (52°F) compared to August's 17°C (63°F). Both months share similar maximum temperatures, reaching around 34°C (93°F in September and 94°F in August). However, September experiences more precipitation, totaling 215 mm (8.5 in) over 13 days, as opposed to August's 209 mm (8.2 in) spread across 22 days. Humidity levels remain relatively constant, with September at 79% and August at 80%. For a more detailed view of August conditions, you can visit Wilmington weather in August.
September weather is characterized by warmer temperatures, with an average high of 34°C (93°F) and a relatively high humidity level of 79%. This month also sees significant rainfall, with 215 mm (8.5 in) of precipitation spread over 13 days. In contrast, October experiences cooler conditions, with average temperatures dropping to 21°C (69°F) and a maximum of 33°C (92°F). Precipitation decreases markedly to 67 mm (2.6 in) over 9 days, while humidity remains slightly higher at 80%. Overall, October marks a transition into milder weather, providing a pleasant change from the heat of September. For more details, check out Wilmington weather in October.
September and November present a stark contrast in weather patterns. September offers warmer temperatures with a minimum of 11°C (52°F) and a peak of 34°C (93°F), while November sees a drop, with temperatures ranging from a chilly -2°C (28°F) to a maximum of 27°C (81°F). Precipitation levels are higher in September at 215 mm (8.5 in) over 13 days, compared to November's 118 mm (4.6 in) over just 10 days. Humidity remains relatively high in both months, with September at 79% and November slightly higher at 85%. For a detailed look at what to expect, check out Wilmington weather in November.
September and December exhibit strikingly different weather patterns. In September, temperatures range from a mild 11°C (52°F) at night to a warm 34°C (93°F) during the day, with an average of 25°C (76°F). The month also sees considerable rainfall, totaling 215 mm (8.5 in) over 13 days, and humidity levels are relatively comfortable at 79%. In contrast, December presents a much cooler climate, with temperatures dropping to a minimum of -4°C (25°F) and peaking at 24°C (75°F), averaging around 11°C (52°F). Rainfall decreases significantly to 127 mm (5.0 in) across 10 days, and humidity rises slightly to 86%. For more detailed insights, check out this link: Wilmington weather in December.
As summer transitions to fall, September in Wilmington brings a unique blend of warmth and humidity, setting it apart from other months. With daytime temperatures often soaring, evenings provide a refreshing contrast. While the city welcomes significant rainfall, the dampness is tempered by the lingering warmth, creating a rich, humid atmosphere. This month is characterized by its balanced combination of sunshine and showers, making it an ideal time for both indoor and outdoor activities. The overall climate shifts towards a more comfortable feel, offering a taste of the upcoming fall season. For a deeper dive into what to expect throughout the year, visit Wilmington Climate.