September Weather in Oak Island, United States

Last updated: February 24, 2025

In September, Oak Island, United States, experiences a warm climate characterized by maximum temperatures reaching 32°C (90°F) and an average of 25°C (77°F). The evenings provide a mild retreat with minimum temperatures around 14°C (57°F). During this month, the area sees 197 mm (7.7 in) of rainfall over approximately 12 days, contributing to a humidity level of 81%. This blend of warmth and moisture creates a vibrant coastal atmosphere, perfect for enjoying the beach while also being prepared for occasional rain.

September Temperature in Oak Island

As summer gives way to autumn, September in Oak Island ushers in pleasantly warm temperatures, featuring a minimum of 14°C (57°F) and a comfortable average of 25°C (77°F). The maximum temperature reaches up to 32°C (90°F), reminiscent of the lingering summer heat, but with a soothing hint of fall in the air. This transition is marked by a slight departure from the high temperatures of July and August, setting the stage for a gradual cooling trend as the month progresses into October. Overall, September offers residents and visitors a beautiful backdrop of warm days and cooler evenings, ideal for outdoor activities and enjoying the picturesque landscape.

September Weather in Oak Island: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Oak Island, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends.
JanFebMarAprMayJunJulAugSepOctNovDec495356647277818077715853
Data source: Temperature data for Oak Island 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 Oak Island

In September, Oak Island experiences a notable shift in weather patterns, with precipitation soaring to 197 mm (7.7 in) over 12 days. This increase follows the peak rainfall of August, when 202 mm (7.9 in) fell in 20 days, indicating the tail end of the summer rainy season. As the year progresses, September stands out with slightly less rain than August but still ranks among the wettest months, reflecting the region's transition into fall. Historically, the late summer months, particularly July through September, showcase the highest levels of precipitation, suggesting a pattern of increased rainfall as warm air cools. This trend hints at the dynamic climate of Oak Island, where vibrant foliage meets the lingering humidity of summer.

September Precipitation Trends in Oak Island

The chart displays monthly precipitation patterns in Oak Island, 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.
JanFebMarAprMayJunJulAugSepOctNovDec76108769711813816420219768107139
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Oak Island

September in Oak Island, United States, sees an average humidity of 81%, which is consistent with the preceding months of July and August. This slight decline from the peak summer humidity demonstrates a gradual transition into fall. Overall, the trends indicate that the coastal climate remains fairly humid throughout the year, with the highest levels found in winter (December at 84%) and the lowest during the late spring and early summer months, as evident in April, May, and June, where humidity stabilizes around 78%. This persistence of humidity shapes the region's lush landscapes and vibrant ecosystems, making Oak Island a unique coastal haven.

September Average Humidity in Oak Island

This chart illustrates the average monthly humidity levels in Oak Island, 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.
JanFebMarAprMayJunJulAugSepOctNovDec84%80%79%78%78%78%82%81%81%78%82%84%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Oak Island

In September, Oak Island experiences a UV Index of 9, categorizing it as very high and allowing for a burn time of just 15 minutes. As summer fades, the UV Index begins to taper off from the extreme levels (11) observed in the peak months of May, June, and July. The transition from summer to early fall in Oak Island showcases a slight decrease in sun intensity, yet caution is still warranted, as the index remains elevated. Staying informed about such trends can help residents and visitors protect their skin effectively during this time. For more detailed information, visit Oak Island UV Index.

Maximum UV Index Levels in Oak Island for September

The chart shows the monthly maximum UV Index (UVI) for Oak Island 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.
JanFebMarAprMayJunJulAugSepOctNovDec47810111111109864
Data source: Oak Island 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 Oak Island

September in Oak Island brings a delightful blend of warmth and sunshine, offering 296 hours of radiant daylight. This month marks a slight dip from the peak summer highs of 336 hours in July and 338 hours in May, yet still stands out as a bright close to the season. As the autumn breeze begins to set in, the sunshine is more than ample—providing cozy afternoons perfect for beach strolls or sunset watching. Notably, the transition into fall sees September's hours just shy of October's 292 hours, hinting at the gentle tapering of daylight as the year progresses. This trend showcases Oak Island's rich summer abundance, gracefully shifting into the serene, golden hues of autumn.

Monthly Sunshine Duration in Oak Island: September Highlighted

The September sunshine duration represents the total number of hours Oak Island 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.
JanFebMarAprMayJunJulAugSepOctNovDec181h206h272h309h338h317h336h316h296h292h241h210h
Data source: Oak Island September Sunshine duration data generated using information from the Copernicus Climate Change Service.

Chance of Sun in Oak Island During September

In Oak Island, September marks a transition towards more promising weather as the likelihood of sunny days rises to 55%, making it one of the sunnier months of the year. This increase in sunshine follows the notably cooler summer months, where June, July, and August struggle with lower probabilities of sunny weather, hovering around 30% to 42%. Interestingly, September's sunny potential closely aligns with November, both showing a similar 60% chance, hinting at a delightful shift as summer fades into fall. With this appealing forecast, visitors can anticipate more enjoyable days in the sun, just in time for the autumn season.

Percentage of Sunny Days in September in Oak Island

The chart illustrates the percentage of sunny days in Oak Island 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 Oak Island experiences clear skies throughout the year.
JanFebMarAprMayJunJulAugSepOctNovDec49%37%36%60%50%30%42%38%55%48%60%48%
Data source: Oak Island September chance of sun data, generated using information from the Copernicus Climate Change Service.

Daylight Hours in Oak Island in September

As summer transitions into fall, September in Oak Island reveals a shift in daylight duration, showcasing a balance between the longer days of summer and the shorter days of impending winter. With 12 hours of daylight, September marks a gradual decline from the peak of 14 hours experienced in June and July. This trend highlights the subtle yet noticeable change in seasons, where the vibrant warmth of summer begins to give way to the softer, golden hues of autumn. As daylight ebbs, the charm of Oak Island transforms, inviting residents and visitors alike to savor the lingering moments of sunlight before the days shorten further into fall.

Average Daylight Hours in Oak Island for September

The chart illustrates the variation in daylight duration in Oak Island throughout the year, with September highlighted. It shows the monthly changes in daylight hours, calculated by summing the hours between sunrise and sunset.
JanFebMarAprMayJunJulAugSepOctNovDec10h 10m10h 58m11h 59m13h 2m13h 55m14h 21m14h 7m13h 20m12h 20m11h 17m10h 22m9h 55m
Data source: Oak Island daylight hours, calculated by summing the hours between sunrise and sunset for each day.

September Winds in Oak Island

As September arrives in Oak Island, the winds begin to shift slightly; with an average wind speed of 3.6 m/s (8 mph), it's a gentle transition from the breezier summer months. This marks a noticeable decline from August's 3.3 m/s (7 mph), presenting a softer touch as the warmth of summer gradually ebbs. Throughout the year, the wind speeds generally fluctuate between 4.1 m/s (9 mph) and 4.7 m/s (11 mph) during the spring and early summer, creating a lively atmosphere ideal for outdoor activities. However, as autumn sets in, September's milder gusts suggest a calm before the fall, hinting at the more invigorating breezes that October usually brings. This rhythmic dance of wind patterns not only dictates the season’s feel but also enhances Oak Island's enchanting coastal allure.

Average September Wind Speed in Oak Island

The chart displays monthly wind speed patterns in Oak Island, 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.
JanFebMarAprMayJunJulAugSepOctNovDec4.34.74.74.44.44.34.13.33.6 m/s4.14.54.2
Data source: Oak Island September wind data, generated using information from the Copernicus Climate Change Service.

How September Weather in Oak Island Compares to Other Months

The weather in Oak Island 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 Oak Island and find detailed weather information for every month.

September and January present striking contrasts in weather. In September, temperatures range from a mild 14°C (57°F) to a warm 32°C (90°F), with an average of 25°C (77°F). The month sees significant rainfall, totaling 197 mm (7.7 in) over approximately 12 days, and an average humidity of 81%. In contrast, January brings much colder temperatures, with a minimum of -7°C (20°F), an average of 10°C (50°F), and a maximum of 22°C (71°F). Precipitation is lighter, averaging 76 mm (3.0 in) over about 9 days, while humidity remains slightly higher at 83%. For more details on January weather, you can visit Oak Island weather in January.

September and February present starkly contrasting weather conditions. In September, temperatures range from a mild 14°C (57°F) to a warm 32°C (90°F), with an average of 25°C (77°F). The month experiences considerable precipitation, totaling 197 mm (7.7 in) over 12 days, and humidity levels are high at 81%. In contrast, February features cooler temperatures, with a minimum of -1°C (30°F) and a maximum of 22°C (71°F), averaging around 12°C (53°F). The precipitation is lower at 108 mm (4.3 in) across 10 days, and humidity drops slightly to 79%. For more specific insights on February weather, you can visit Oak Island weather in February.

September and March present contrasting weather patterns, highlighting the transition between summer and spring. September boasts warmer temperatures, with an average of 25°C (77°F), peaking at 32°C (90°F), while March experiences a cooler average of 13°C (57°F) and a maximum of 24°C (75°F). Precipitation is more significant in September, with 197 mm (7.7 in) over 12 days, compared to March's lighter rain, totaling 76 mm (3.0 in) across 9 days. Additionally, September's humidity is slightly higher at 81%, while March maintains a comfortable 79%. For more detailed information about the specific weather conditions, you can check Oak Island weather in March.

September and April present contrasting weather conditions. In September, temperatures range from a minimum of 14°C (57°F) to a peak of 32°C (90°F), with an average of 25°C (77°F). This month also experiences higher precipitation, totaling 197 mm (7.7 in) over about 12 days, paired with a humidity level of 81%. In contrast, April boasts milder weather, with temperatures starting at a minimum of 3°C (38°F) and reaching up to 27°C (80°F), averaging 18°C (64°F). The precipitation in April is significantly lower, at 97 mm (3.8 in) over just 8 days, with humidity slightly lower at 78%. For more details on April conditions, you can visit Oak Island weather in April.

When comparing the weather in September and May, several notable differences emerge. September typically features warmer temperatures, with average highs reaching 25°C (77°F) and maximums peaking at 32°C (90°F), while May's temperatures are slightly lower, averaging 22°C (72°F) with a peak of 33°C (91°F). In September, humidity is higher at 81%, compared to May's 78%, contributing to a more muggy feel during the former month. Additionally, September experiences increased rainfall, averaging 197 mm (7.7 in) over 12 days, whereas May sees less precipitation at 118 mm (4.6 in) over 9 days. For more detailed information about May weather, you can check Oak Island weather in May.

In comparing the weather of September and June, we see similar temperature ranges, with both months having a minimum temperature of around 14°C (57°F), an average of approximately 25°C (77°F), and a maximum reaching 32°C (90°F). However, September experiences significantly higher precipitation, totaling 197 mm (7.7 in) over 12 rainy days, compared to June, which sees less rainfall at 138 mm (5.4 in) across 16 days. Additionally, September's humidity level is a bit higher at 81%, compared to June's 78%. For those looking for more details on June weather patterns, check out Oak Island weather in June.

In comparing the weather of September and July, September typically presents cooler temperatures, with a minimum of 14°C (57°F) and an average of 25°C (77°F), while July features warmer lows at a minimum of 20°C (68°F) and an average of 27°C (81°F). Despite both months reaching a maximum of 32°C (90°F for September and 89°F for July), July is generally warmer overall. Precipitation is more frequent in September, with 197 mm (7.7 in) over 12 days, compared to July's 164 mm (6.4 in) spread across 16 days. Humidity levels remain similar, with September at 81% and July slightly higher at 82%. For a detailed look at July weather specifics, you can visit Oak Island weather in July.

In comparing the weather between August and September, it's clear that September experiences slightly cooler temperatures, with a minimum of 14°C (57°F) compared to August's 19°C (67°F). The average temperature in September is 25°C (77°F), which is a bit lower than August's average of 27°C (80°F). Both months have the same maximum temperature of 32°C (90°F). Precipitation levels are quite similar, with September receiving 197 mm (7.7 in) over 12 days, just slightly less than August's 202 mm (7.9 in) across 20 days. Interestingly, humidity remains constant at 81% for both months. For more detailed information on August weather, you can check Oak Island weather in August.

September typically presents warmer weather with average temperatures reaching around 25°C (77°F) and maximum highs of 32°C (90°F). In contrast, October sees a noticeable drop in the minimum temperature, averaging at 7°C (44°F), while the average overall temperature decreases to 21°C (71°F). Additionally, precipitation levels are considerably lower in October, with only 68 mm (2.7 in) falling over 9 days compared to September's 197 mm (7.7 in) over 12 days. The humidity slightly decreases from 81% in September to 78% in October, making the latter month feel a bit more comfortable despite the cooler temperatures. For a detailed look at what to expect, check out Oak Island weather in October.

September and November exhibit notable differences in weather conditions. September features warmer temperatures with a minimum of 14°C (57°F) and an average of 25°C (77°F), reaching highs of 32°C (90°F). In contrast, November experiences cooler weather, beginning at a minimum of 1°C (34°F) and averaging 15°C (58°F), with a maximum of 26°C (79°F). Additionally, September sees higher precipitation levels, totaling 197 mm (7.7 in) over 12 days, while November has a reduced total of 107 mm (4.2 in) across 10 days. Humidity remains relatively high in both months, slightly increasing from 81% in September to 82% in November. For more detailed information, you can explore Oak Island weather in November.

September and December present a striking contrast in weather conditions. In September, temperatures are quite warm, with averages around 25°C (77°F) and highs reaching up to 32°C (90°F), accompanied by significant humidity at 81% and frequent rainfall totaling 197 mm over 12 days. In contrast, December brings a much cooler climate, with average temperatures dropping to 12°C (53°F), and daily highs peaking at 23°C (73°F). Precipitation is also reduced, totaling 139 mm over 10 days and the humidity rising slightly to 84%. For a more detailed look at December weather, you can visit Oak Island weather in December.

Compare Oak Island's Climate with Cities Worldwide

Conclusion: What to Expect From September Weather in Oak Island

As summer transitions to fall, September on Oak Island offers a delightful reprieve from the stifling heat of the previous months, with warm days averaging 25°C (77°F) and maximums reaching up to 32°C (90°F). While the humidity remains relatively high at 81%, the rainfall of approximately 197 mm (7.7 in) over about 12 days can bring refreshing breaks from the warmth, making it one of the wetter months. This blend of warmth and moisture creates a distinctive atmosphere, setting September apart from the drier summer months. For a more detailed understanding of what to expect, check out Oak Island Climate.