Charleston Weather in December: Temperature, Precipitation, Wind
Charleston, United States in December experiences a cool and damp climate typical of the southeastern coastal region. The average temperature hovers around 6.0°C (42.8°F), with daytime highs reaching 11.5°C (52.8°F) and nighttime lows dipping to 1.2°C (34.1°F).
Humidity levels are relatively high, averaging 73.3%, contributing to the chilly feel of the air. The “feels like” temperature drops below the actual reading, with an average perceived temperature of 5.1°C (41.2°F). Mornings are brisk, with the average minimum “feels like” temperature approaching freezing at -0.2°C (31.7°F).
Precipitation is a common feature in Charleston during December. The city receives an average of 1.84 inches (46.7 mm) of rain, with a 54.8% probability of precipitation on any given day. Rain covers about 20.4% of the month, resulting in 17 rainy days. Snow is rare, with only trace amounts of 0.01 inches (0.25 mm) recorded on average.
Wind plays a significant role in the December weather pattern. Average wind speeds reach 16.5 mph (26.6 km/h), with gusts up to 32.7 mph (52.6 km/h). These winds, combined with the cool temperatures and high humidity, can make outdoor activities in popular spots like the historic Charleston City Market or along the Battery promenade feel quite brisk.
Cloud cover is substantial during December, averaging 66.8%. Despite the cloud cover, visibility remains good at 14.9 miles (24 km). The UV index is low at 2.3, typical for winter months at this latitude.
Atmospheric pressure averages 1020.4 hPa, indicating stable weather conditions. The risk of severe weather is relatively low at 10.0%, but visitors and residents should stay informed about potential weather changes.
December days in Charleston are short, with sunrise occurring around 7:35 AM and sunset at approximately 5:08 PM. The limited daylight hours, combined with the cool and damp conditions, create a distinctly wintry atmosphere in this historic coastal city.
What is the temperature in Charleston in December?
Average air temperature in Charleston is 6°C (42.8°F) in December. The outside temperature in Charleston feels like 5.1°C (41.2°F) on a typical December day. The highest average temperature during sunny days is 11.5°C (52.8°F) and feels like 11.1°C (52°F). The lowest average temperature after dark is 1.2°C (34.1°F) which feels like -0.2°C (31.7°F).
How hot is Charleston in December?
The hot temperature in December in Charleston rises to 18.8°C (65.8°F) on sunny days with low cloud coverage and 73.3% humidity. During hottest days of December it feels like 18.8 °C (65.8°F). The average maximum temp in Charleston is 11.5°C (65.8°F) during day time in December.
How cold is Charleston in December?
The coldest temp in Charleston in December drops to -6.7°C (19.9°F) during the cold nights. With 16.5km/h (10.3mph) winds and 73.3% humidity it feels like -8.2°C (17.2°F) on the coldest nights. The average minimum temperature is 1.2°C (34.1°F) during night time in December.
Does it rain in Charleston in December?
Yes, it rains for 17 days in Charleston, United States in December averaging 1.84 mm of precipitation. Charleston has a 54.8% chance for rain throughout the entire month of December.
How much does it rain in Charleston throughout December?
Charleston has 1.84 mm (0.07 inch) of rain per day on average in December. It rains for an average of 17 days out of the entire month.
Does it snow in Charleston in December?
Yes, it snows in Charleston during December. The average snowfall is 0.01 cm (0 inch) per day. And there is 0.01 cm (0 inch) of snow on the ground.
Is Charleston windy in December?
The average speed of wind in Charleston, United States during December is 16.5km/h (10.3mph) and average windgust is 32.7km/h (20.3mph). On some days in December wind can reach up to 29.4km/h (18.3mph).
What is the direction of the wind in Charleston in December?
Most days of December the wind is blowing from South-Southwest direction in Charleston.
What are the humidity levels in Charleston in December?
The average humidity levels in Charleston in December are 73.3%. Daily humidity levels in Charleston range from 52.2% to 97.2% during December.
How many hours of daylight are in Charleston in December?
Charleston has 9 hours 32 minutes of daylight in December on average. Sunset and sunrise times gradually change throughout the month. Sunrise in Charleston in December is at 7:35:59 and the sunset is at 17:08:38.
What is the cloud coverage in Charleston in December?
Clouds cover 66.8% of the sky on average throughout December in Charleston. The cloud coverage ranges from 0% to 100% depending on the day of the month.
What is the UV level in December in Charleston?
The average UV index in Charleston is 2.3 in December. UV levels change throughout the month and range from 0 to 4.
What is the solar radiation in Charleston in December?
The average solar radiation is 36.1 W/m2 (Watts per square meter) in Charleston during December. However solar radiation levels change throughout the month and range from 7.3 W/m2 to 61.3 W/m2.
What is the solar energy during December in Charleston?
The average solar energy during December in Charleston is 3.1 MJ/m2 (megajoules per square metre). Solar energy ranges from 0.5 MJ/m2, to 5.3 MJ/m2 during December.
Are there severe weather risks in Charleston in December?
Yes, there is a 10% risk for severe weather in Charleston, United States in December.
What is the air pressure in Charleston in December?
On average the air pressure in Charleston in December is 1020.4 mb (millibars). Throughout the month the sea level pressure ranges from 1006.9 mb to 1040 mb.
What is the visibility in Charleston in December?
The average daylight visibility in Charleston in December is 14.9 km (9.3 miles). Depending on the precipitation the visibility ranges from 9.6 km (6 miles) to 16 km (9.9 miles) throughout December.
What is the dew point in Charleston in December?
The average dew point in Charleston during December is 0.8°C (33.4°F).
Where is the data for Charleston climate in December coming from?
The climate data for Charleston, South Carolina, United States in December is collected from the following weather stations.
- BECKLEY RALEIGH CO AIRPORT, WV US
- CHARLESTON YEAGER AIRPORT, WV US
- HUNTINGTON TRI STATE AIRPORT, WV US
- FW6696 Charleston WV US
- KBKW
- KCRW
- KHTS