Last updated: February 24, 2025
Discover the December weather on James Island, United States, where the climate is marked by a cool ambiance. Temperatures range from a brisk -3°C (28°F) at night to a pleasant 25°C (77°F) during the day, with an average of 12°C (54°F). December brings 127 mm (5.0 in) of precipitation over approximately 9 days, creating a lush, vibrant environment. The high humidity level of 87% adds a touch of moisture to the air, making it an intriguing time for outdoor activities. Whether you’re wrapping up in cozy layers or enjoying the milder sunny days, December on James Island offers a unique and refreshing climate experience.
In December, James Island experiences a gentle transition into winter. With a minimum temperature of -3°C (28°F), chilliness begins to set in, though it’s moderated by a mild average of 12°C (54°F) during the day. As the month progresses, the maximum temperature peaks around 25°C (77°F), offering a much-appreciated respite from the colder nights. Notably, December continues the trend of gradual cooling that started in late fall, further establishing the island’s character as a place where the festive spirit thrives despite the approaching winter chill. This balance of temperatures makes December a uniquely inviting month, combining the fresh crispness of winter with hints of warmth, perfect for outdoor holiday gatherings or cozy indoor celebrations.
December in James Island brings a noticeable increase in precipitation, with 127 mm (5.0 in) of rainfall occurring over about 9 days. This surge marks a continuation of the wetter patterns established in the fall months, especially following the slightly lower totals seen in October and November. The trend of increasing rainfall is evident as the year closes, with December's precipitation representing a considerable jump from the preceding months, reflecting a typical seasonal shift towards a more humid winter. As the landscape prepares for the cooler months, these rains contribute vital moisture, benefiting both the local ecosystem and ensuring the charming scenery of James Island remains lush and vibrant.
In December, James Island experiences a notable rise in humidity, reaching 87%, the highest level for the year. This uptick follows a gradual downward trend from the previous month, where humidity measured 85% in November. Throughout the year, humidity levels in James Island generally fluctuate, peaking in the winter months and dipping slightly in the summer. With January beginning at 86% and maintaining a high average, the winter months reveal a habitually humid climate that thrives even as temperatures cool. This consistent pattern highlights how December serves as a bridge between the high humidity of winter and the drier conditions often felt in spring.
In December, the UV Index in James Island returns to a moderate level of 4, marking a shift from the higher indices of summer. With a burn time of 30 minutes, this month presents a more forgiving environment for outdoor activities compared to the extreme levels seen from May to August. As winter approaches, the UV exposure decreases, allowing residents and visitors to enjoy the outdoors with less risk of sunburn. This trend of fluctuating UV levels throughout the year highlights the importance of staying informed about sun safety, even in the cooler months. For more details on the UV Index throughout the year, be sure to check out James Island UV Index.
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In December, James Island enjoys a respite from the sunny highs of mid-year, but still basks in a commendable 217 hours of sunlight, marking a delightful end to the year. While this figure represents a dip from the energetic levels of summer, it reflects a gradual decline from November's 247 hours, underscoring the island's sunny character even as the days grow shorter. The trend throughout the year shows a dynamic range, with the peak of 341 hours in July, yet December holds its own charm as a month still drenched in light. The consistent availability of sunshine throughout the year fosters an inviting atmosphere, making James Island a captivating destination, even in the cooler winter months.
In December, James Island enjoys a 45% chance of sunny weather, which is quite consistent with the preceding months. Notably, the likelihood of sunshine tends to rise during late fall, peaking at 62% in November, before slightly dipping again as winter approaches. This trend showcases a transitional pattern, where the sun shines more frequently leading up to December before the likelihood declines in the darker winter months ahead. While December's odds are not the highest, they are significantly better than the summer months, which plummet to around 30%, making it a pleasant time to enjoy the island's natural beauty amidst the festive season.
In James Island, United States, the daylight duration follows a distinct seasonal rhythm, peaking in the summer months and dipping during the winter. As the year progresses from January to June, daylight increases steadily, reaching a maximum of 14 hours in both June and July. Following this vibrant summer stretch, daylight gradually wanes, with August seeing a slight decrease to 13 hours, and daylight further diminishing as autumn rolls in, culminating in 10 hours by December. This cyclical pattern highlights the island's transition from longer, sun-filled days to the shorter, cozy daylight hours of winter, inviting residents and visitors alike to embrace the changing seasons.
As December settles in on James Island, the average wind speed typically hovers around 3.5 m/s (8 mph), marking a slight decline from the slightly brisk conditions of the previous months. This gradual drop in wind intensity is reflective of a broader trend observed throughout the latter part of the year, with September through December exhibiting some of the calmest winds, particularly in August, where speeds dipped to 2.8 m/s (6 mph), the year's lowest point. Interestingly, the winter months often bring a coexistence of cooler temperatures and moderate breezes, creating a serene atmosphere that appeals to locals and visitors alike. Overall, December wraps up the year on a gentle note, inviting a peaceful yet refreshing wind as the year comes to a close.
The weather in James Island changes throughout the year, offering a unique experience in each season. Below is a month-by-month comparison of December's weather with other months, highlighting differences in temperature, precipitation, and other key factors. Click on each section to discover seasonal trends in James Island and find detailed weather information for every month.
December and January showcase notable differences in weather characteristics. December experiences milder temperatures, with a minimum of -3°C (28°F) and an average of 12°C (54°F), compared to January's cooler minimum of -13°C (9°F). Interestingly, January sees slightly higher maximum temperatures, reaching up to 26°C (79°F), while December peaks at 25°C (77°F). Precipitation levels also vary, with December receiving 127 mm (5.0 in) over 9 days, contrasted with January's 59 mm (2.3 in) over just 7 days. Both months maintain high humidity, with December at 87% and January slightly lower at 86%. For more detailed January weather insights, visit James Island weather in January.
In December, the weather is characterized by slightly cooler temperatures, with a minimum of -3°C (28°F) and an average of 12°C (54°F), reaching a maximum of 25°C (77°F). The month sees more precipitation, totaling 127 mm (5.0 in) over 9 days, combined with high humidity at 87%. In contrast, February offers marginally warmer conditions, with a minimum of -2°C (29°F) and an average of 14°C (57°F), peaking at 26°C (79°F). February experiences less rainfall, with precipitation around 78 mm (3.1 in) also over 9 days, and slightly lower humidity, recorded at 81%. For more detailed insights, you can check James Island weather in February.
December and March showcase a notable contrast in weather patterns. December experiences a wide temperature range, with minimums dropping to -3°C (28°F) and maximums reaching up to 25°C (77°F), while March offers a slightly milder average low of -1°C (30°F) and a higher average high of 28°C (82°F). Precipitation is significantly higher in December, with 127 mm (5.0 in) over 9 days, compared to March's 60 mm (2.4 in) over just 6 days. Additionally, December's humidity sits at 87%, making it feel quite damp, while March benefits from a lower humidity level of 81%. For more details on March weather, you can check out James Island weather in March.
December and April present contrasting weather patterns. December usually experiences cooler temperatures, with a minimum of -3°C (28°F) and an average of 12°C (54°F), while April brings milder conditions, starting at a minimum of 4°C (39°F) and averaging 19°C (66°F). The maximum temperature in December can reach up to 25°C (77°F), whereas April can get notably warmer, peaking at 31°C (89°F). Precipitation is slightly higher in December at 127 mm (5.0 in) over approximately 9 days, compared to April's 101 mm (4.0 in) over 8 days, leading to a higher humidity level in December at 87% versus April's 79%. For more details on weather conditions in April, visit James Island weather in April.
Comparing the weather in December and May reveals distinct seasonal characteristics. December experiences cooler temperatures, with minimums dropping to -3°C (28°F) and chilly averages around 12°C (54°F), peaking at a pleasant 25°C (77°F). With 127 mm (5.0 in) of precipitation over 9 days and high humidity at 87%, December often feels damp and cold. In contrast, May ushers in warmer conditions, where temperatures range from a minimum of 9°C (49°F) to a scorching maximum of 37°C (98°F), with an average of 23°C (74°F). The month sees less rainfall at 87 mm (3.4 in) also over 9 days, along with a more comfortable humidity level of 75%. For a detailed look at the weather patterns during this month, check out James Island weather in May.
December and June present striking contrasts in weather. In December, temperatures range from a chilly minimum of -3°C (28°F) to a pleasant maximum of 25°C (77°F), with an average of 12°C (54°F). The month experiences 127 mm (5.0 in) of precipitation over approximately 9 days, accompanied by high humidity at 87%. In contrast, June boasts noticeably warmer conditions, with minimum temperatures starting at 16°C (61°F) and peaking at 35°C (95°F), averaging around 26°C (79°F). This month also sees increased rainfall at 150 mm (5.9 in) spread over 19 days, although humidity is lower at 75%. For more detailed information about June weather, you can check out James Island weather in June.
December and July present contrasting weather patterns. In December, temperatures range from a chilly minimum of -3°C (28°F) to a mild average of 12°C (54°F), peaking at a comfortable 25°C (77°F). The month sees a significant amount of precipitation, with 127 mm (5.0 in) spread over 9 days and high humidity levels at 87%. In stark contrast, July brings warm weather, with minimum temperatures starting at 20°C (69°F) and climbing to an average of 28°C (82°F), reaching a maximum of 34°C (94°F). Precipitation is also more frequent in July, totaling 187 mm (7.4 in) over 20 days, with humidity slightly lower at 80%. For more details on July conditions, refer to James Island weather in July.
In comparing December and August weather, we see significant differences that highlight the seasonal contrasts. December experiences cooler temperatures, ranging from a minimum of -3°C (28°F) to a maximum of 25°C (77°F), with an average of 12°C (54°F). In contrast, August is much warmer, with temperatures ranging from a minimum of 21°C (70°F) to a maximum of 35°C (95°F) and an average of 27°C (81°F). Precipitation is more frequent in August, with 183 mm (7.2 in) over 21 days, compared to December's 127 mm (5.0 in) over 9 days. Additionally, humidity levels are higher in December at 87% compared to August's 81%. For more detailed information, you can refer to James Island weather in August.
December and September present notably different weather patterns. In December, temperatures range from a chilly minimum of -3°C (28°F) to a comfortable average of 12°C (54°F), peaking at 25°C (77°F). The month sees approximately 127 mm (5.0 in) of precipitation over about 9 days, with humidity at a high 87%. In contrast, September boasts much warmer temperatures, with a minimum of 14°C (57°F), an average of 26°C (78°F), and a maximum reaching up to a hot 35°C (94°F). It also experiences higher precipitation levels, totaling 176 mm (6.9 in) across 14 days and slightly lower humidity at 83%. For a deeper dive into September's climate specifics, you can view James Island weather in September.
In comparing the weather of December and October, December presents a stark contrast with a minimum temperature of -3°C (28°F) and an average of 12°C (54°F), while October enjoys milder conditions, with a minimum of 3°C (38°F) and an average of 22°C (72°F). The maximum temperatures in December reach up to 25°C (77°F), whereas October can soar to 31°C (89°F), indicative of the more pleasant fall warmth. Precipitation is notably higher in December, with 127 mm (5.0 in) recorded over nine days, compared to October's 79 mm (3.1 in) for the same number of days, along with a higher humidity level of 87% in December versus 78% in October. For more detailed information about October weather specifically, you can check James Island weather in October.
In comparing the weather between November and December, we see some notable differences. December experiences lower minimum temperatures, dipping to -3°C (28°F), while November's minimum is slightly milder at -1°C (31°F). The average temperature in November is also warmer, at 15°C (59°F), compared to December's 12°C (54°F). Precipitation increases in December, with 127 mm (5.0 in) falling over 9 days, compared to November’s 92 mm (3.6 in) over 8 days. Furthermore, December has a higher humidity level at 87%, compared to November's 85%. For more detailed insights, you can check out James Island weather in November.
December on James Island brings a distinct shift in weather, with cooler temperatures compared to the warmer months. While the maximum reaches a mild 25°C (77°F), the average dips significantly, presenting a refreshing change. Rain showers are more frequent, contributing to the 127 mm of precipitation over about 9 days, creating a cozy ambiance perfect for the holiday season. The added humidity of 87% gives the air a crispness that's notably different from the sultry summers. For a deeper dive into what to expect throughout the year, check out the full details at James Island Climate.