Last updated: February 24, 2025
October in Sullivan's Island, United States offers a delightful blend of warm days and cool evenings. With maximum temperatures reaching 29°C (85°F) and an average settling at a comfortable 23°C (73°F), visitors can enjoy plenty of outdoor activities. However, nighttime brings a refreshing drop, with temperatures dipping to a cool 7°C (46°F). This month also sees approximately 85 mm (3.4 in) of rainfall over about 10 days, contributing to a humidity level of 78%, which adds to the island's lush scenery. Whether you're exploring the beach or savoring local cuisine, October presents a unique coastal charm perfect for relaxation and adventure alike.
In October, Sullivans Island experiences a delightful transition as temperatures begin to dip, making it an inviting escape for the fall season. With a minimum of 7°C (46°F) and a comfortable average of 23°C (73°F), the island offers pleasant warmth without the scorching heat of summer. The maximum temperature reaches a moderate 29°C (85°F), providing ample opportunity for outdoor activities. Compared to the sweltering summer months, October's temperate climate feels refreshing, marking a significant drop from September's highs. This gradual cooling trend not only enhances the island’s charm but also creates a perfect backdrop for enjoying its stunning natural beauty.
In October, Sullivans Island experiences a notable shift in precipitation patterns, with rainfall totaling 85 mm (about 3.4 inches) over approximately 10 days. This marks a decrease from the preceding months, particularly September, which averaged 188 mm with 14 rainy days. While October remains relatively wet, its figures are significantly lower than the summer peak where July and August see substantial rainfall of 171 mm and 197 mm, respectively. As the coastal season transitions into fall, the more moderate precipitation signals a shift toward drier conditions, setting the stage for the drier months ahead.
October in Sullivans Island brings a comfortable humidity level of 78%, marking a slight dip from the summer months. This modest decrease represents a continuation of a trend observed earlier in the year, where humidity levels remain relatively stable, oscillating between 78% and 83%. Notably, after the peak of 82% in July, the humidity gently recedes in the subsequent months, culminating in October's pleasant conditions. As autumn settles in, residents and visitors can enjoy a serene atmosphere characterized by lower moisture in the air, paving the way for outdoor activities amid the charming coastal backdrop.
In October, Sullivans Island experiences a UV Index of 8, placing it in the very high exposure category, which means residents and visitors should take extra precautions when enjoying outdoor activities. This is a slight decrease from the peak 11 UV Index present during the summer months, yet it remains crucial to limit sun exposure, with a burn time of only 15 minutes for unprotected skin. The trend shows a gradual decline in UV intensity as the year progresses, shifting from the extreme levels of summer to a more moderate risk heading into the winter. As temperatures cool, it’s important to stay vigilant about sun protection, especially during those sunny autumn days. For more detailed information on the UV levels, check out Sullivans Island UV Index.
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As October arrives on Sullivan's Island, the warm glow of 294 sunshine hours invites visitors to enjoy the lingering summer ambiance before the year winds down. The month holds onto the vibrant vitality witnessed from mid-spring through the peak of summer, where sunshine hours soar highest in July at 345 hours. While October’s light diminishes compared to the previous months, it's still substantially brighter than the colder months of November and December, which drop to 248 and 220 hours respectively. This trend highlights October as a sweet spot of temperate skies, perfect for beach walks and picturesque sunsets, bridging the gap between the sun-drenched summer and the cooler, quieter winter months.
October in Sullivans Island, United States, boasts a 50% chance of sunny weather, making it a balanced choice for those hoping to bask in some autumn rays. This figure aligns closely with the sunny percentages seen in September, which holds a 52% chance, indicating a gradual transition into the cooler months while still retaining a fair amount of sunshine. As we move towards November, the likelihood of sunny days increases to 61%, suggesting that while October can be pleasant, it may also present a mix of weather patterns. Overall, October is a delightful time to experience the lingering warmth of summer, with a solid chance of clear skies perfect for outdoor activities.
As October arrives in Sullivans Island, the days begin to shorten, bringing with them a distinct shift in daylight hours. Following a vibrant summer characterized by 14 hours of sunlight in June and July, the daylight gently tapers off, dropping to 13 hours in August, and then further to 12 hours by September. By October, residents experience a cozy 11 hours of daylight, signaling the onset of autumn. This gradual transition reflects a consistent pattern throughout the year, where daylight hours peak in the summer and gradually decline towards the winter months, with November and December continuing the trend at 10 hours each. Embracing this rhythmic change, Sullivans Island welcomes the cool, shorter days, perfect for enjoying the region's tranquil beauty.
As October settles in on Sullivan's Island, the winds begin to pick up slightly, averaging 4.3 m/s (10 mph). This marks a subtle rebound from the summer's gentler breezes, where July and August saw their lowest speeds of the year. The gradual increase from September's 4.0 m/s (9 mph) signals a shift towards a crisper autumn atmosphere, making it a perfect time for beach walks where the winds can bring a refreshing chill. Interestingly, the trend shows that while October's winds remain mild compared to the peak months, they lay the groundwork for a brisk November, hinting at the seasonal transition. Overall, the October winds dance softly yet playfully across the island, inviting both locals and visitors to embrace the dynamic changes of the fall season.
The weather in Sullivans Island changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of October's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in Sullivans Island and find detailed weather information for every month.
October and January present contrasting weather experiences. In October, temperatures range from a mild 7°C (46°F) at night to a warm 29°C (85°F) during the day, with an average of around 23°C (73°F). This month also sees about 85 mm (3.4 in) of rainfall over roughly 10 days and a humidity level of 78%. In contrast, January offers cooler temperatures, with nighttime lows dropping to -5°C (24°F) and daytime highs peaking at 21°C (70°F), averaging 12°C (53°F). Precipitation is less frequent, totaling 66 mm (2.6 in) across 8 days, accompanied by slightly higher humidity at 83%. For more detailed insights into January weather, you can visit Sullivans Island weather in January.
October and February present quite contrasting weather conditions. In October, temperatures can range from a mild 7°C (46°F) to a warm 29°C (85°F), with an average of 23°C (73°F). This month sees about 85 mm (3.4 in) of precipitation over approximately 10 days, while the humidity hovers at 78%. In contrast, February experiences cooler temperatures, with a minimum of 2°C (36°F) and a maximum of 21°C (70°F), averaging around 14°C (57°F). Although February has slightly higher precipitation at 91 mm (3.6 in) over 11 days, humidity remains similar at 79%. For a detailed look at February weather, check Sullivans Island weather in February.
When comparing the weather in October and March, October typically enjoys warmer temperatures with an average of 23°C (73°F) and highs reaching up to 29°C (85°F), while March has cooler averages around 15°C (60°F) with maximums of 23°C (74°F). October also experiences more rainfall at 85 mm (3.4 in) over approximately 10 days compared to March's 62 mm (2.4 in) spread across 7 days. Despite October's higher temperatures, both months boast similar humidity levels, with October at 78% and March slightly higher at 79%. For more detailed insights on March weather, you can explore this link: Sullivans Island weather in March.
October and April exhibit distinct weather patterns, marked by differences in temperature and precipitation. In October, temperatures range from a minimum of 7°C (46°F) to a maximum of 29°C (85°F), with an average of 23°C (73°F). This month sees about 85 mm (3.4 in) of rain over approximately 10 days. In contrast, April experiences slightly cooler temperatures, with a minimum of 6°C (42°F) and a maximum of 27°C (81°F), averaging around 19°C (66°F). This month has a higher precipitation total of 105 mm (4.1 in), spread across 8 days, though the humidity remains constant at 78% in both months. For more details on April weather, check out Sullivans Island weather in April.
When comparing the weather in October and May, both months exhibit similar average temperatures around 23°C (73°F). However, October tends to have cooler minimum temperatures, dipping to 7°C (46°F), compared to May's milder minimum of 12°C (55°F). Additionally, May experiences slightly warmer maximum temperatures, reaching up to 31°C (89°F), while October peaks at 29°C (85°F). Precipitation levels are quite close, with October receiving 85 mm over about 10 days and May slightly less at 82 mm over 8 days. Notably, both months maintain a consistent humidity level of 78%, making for pleasantly warm and somewhat humid days. For more detailed insights about weather during May, you can visit Sullivans Island weather in May.
When comparing October and June weather, October typically experiences milder temperatures, with a minimum of 7°C (46°F) and an average high of 29°C (85°F), while June starts warmer with a minimum of 18°C (64°F) and averages around 32°C (90°F). Precipitation is also a notable difference, as June has significantly higher rainfall totaling 144 mm (5.7 in) over 17 days compared to October's 85 mm (3.4 in) across 10 days. Despite both months having similar humidity levels of 78%, June's heat and increased rainfall make it feel more intense. For more details on June weather, you can check Sullivans Island weather in June.
When comparing the weather in October and July, a noticeable contrast emerges. October brings milder conditions with average temperatures around 23°C (73°F) and maximums reaching 29°C (85°F), while July boasts warmer temperatures, averaging 27°C (81°F) and peaking at 32°C (89°F). Additionally, October experiences less precipitation at 85 mm (3.4 in) over 10 days compared to July's 171 mm (6.7 in) spread over 16 days. Humidity levels remain similar, with October at 78% and July slightly higher at 82%. For more detailed insights on July's climate, check out Sullivans Island weather in July.
In comparing the weather between October and August, October tends to be cooler with minimum temperatures dropping to around 7°C (46°F), while August remains warm with minimums around 23°C (73°F). August features an average temperature of 27°C (81°F), peaking at 31°C (89°F), whereas October averages a comfortable 23°C (73°F) with a maximum of 29°C (85°F). Precipitation is significantly higher in August, accumulating 197 mm (7.8 in) over 21 days, compared to October's 85 mm (3.4 in) over just 10 days. Humidity levels are relatively similar, with October at 78% and August slightly higher at 81%. For more detailed insights into August weather, you can check Sullivans Island weather in August.
In comparing the weather of October to that of September, October exhibits cooler temperatures, with a minimum of 7°C (46°F) and average highs around 29°C (85°F), in contrast to September's warmer minimum of 16°C (61°F) and maximum of 32°C (90°F). Additionally, October experiences significantly less precipitation, totaling 85 mm (3.4 in) over 10 days, compared to September's 188 mm (7.4 in) across 14 days. Humidity levels remain relatively consistent, with October at 78% and September slightly higher at 81%. For more detailed insights, visit Sullivans Island weather in September.
October and November exhibit a notable shift in weather patterns. In October, temperatures range from a minimum of 7°C (46°F) to a maximum of 29°C (85°F), with an average of 23°C (73°F). The month also sees 85 mm (3.4 in) of precipitation over approximately 10 days and a humidity level of 78%. As we transition into November, the temperatures drop further, with a minimum of 3°C (38°F) and an average of 16°C (62°F), peaking at 26°C (79°F). November experiences slightly higher precipitation at 103 mm (4.1 in) over 8 days, alongside a slight increase in humidity to 82%. For more detailed insights about the weather in November, you can check Sullivans Island weather in November.
October and December present distinct weather patterns, with October typically enjoying milder temperatures ranging from a minimum of 7°C (46°F) to a maximum of 29°C (85°F). In contrast, December experiences cooler temperatures, with lows hitting 0°C (33°F) and highs reaching 22°C (72°F). While October sees an average rainfall of 85 mm (3.4 in) over about 10 days, December is noticeably wetter with 141 mm (5.6 in) of rain, also over 10 days. Humidity remains relatively high in both months, with October averaging 78% and December slightly higher at 84%. For more details on the weather patterns in December, you can refer to Sullivans Island weather in December.
As October unfolds on Sullivans Island, visitors can expect a delightful transition in weather, differing significantly from the sweltering summer months. With an average temperature around 23°C (73°F) and a maximum peak of 29°C (85°F), the climate becomes more temperate, inviting outdoor explorations without the intense heat. The humidity level remains relatively high at 78%, providing a unique tropical feel, yet is balanced by occasional rain, totaling about 85 mm across approximately 10 days. This month marks a shift towards cooler evenings, where temperatures can dip to around 7°C (46°F), making it a perfect time for cozy gatherings. For a deeper understanding of what to expect throughout the year, check out Sullivans Island Climate.