December witnesses the onset of winter at
Charleston International Airport, replete with low temperatures and increased rainfall. The decline in temperature is noticeable, plunging to a chilly 27°F (-2.8°C) during cold nights. The daylight hours decrease further, curtailing outdoor activities and bringing in homebound evenings earlier. With the increase in precipitation, December brings a mix of chilly breezes and rainy afternoons. The combination of cold temperatures and persistent rainfall creates a seamless transition to the subsequent frosty
January.
Temperature
As December commences in Charleston International Airport, the average high-temperature shows a reduction, transitioning from a refreshing 57.2°F (14°C) in
November to a frosty 46.4°F (8°C). In the month of December, the temperature in Charleston International Airport generally rests at an average low of 26.6°F (-3°C).
Rainfall
In Charleston International Airport, in December, it is raining for 14 days, with typically 3.23" (82mm) of accumulated precipitation. In Charleston International Airport,
South Carolina, during the entire year, the rain falls for 151 days and collects up to 41.93" (1065mm) of precipitation.
Daylight
The month with the shortest days in Charleston International Airport is December, with an average of 10h and 0min of daylight.
On the first day of the month, sunrise is at 7:05 am and sunset at 5:13 pm. On the last day of December, sunrise is at 7:22 am and sunset at 5:24 pm EST.
Sunshine
The month with the least sunshine in Charleston International Airport, South Carolina, is December, with an average of 3h of sunshine.
UV index
January and December, with an average maximum UV index of 2, are months with the lowest UV index in Charleston International Airport, South Carolina. A UV Index of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV radiation for the ordinary person.
Note: During December, 2 as the daily maximum UV index converts into the following advice:
While extended sun exposure does not significantly affect most people, those with sensitive skin, children, and infants should always be protected. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.