January weather forecast
Charleston International Airport, SC

January's weather in Charleston International Airport sees a mix of rain and cold temperatures, contrasting with the milder climes experienced in later months. Temperature fluctuations are observed, reaching a high of 41°F (5°C) and plunging to a low of 23°F (-5°C). Sunlight is sparse, with daylight hours accounting for just a fraction of the day. Winter coats are essential this month, as frosty temperatures settle in after sunset. With rain observed on numerous days, waterproof wear is an advisable addition to the winter wardrobe.

Temperature

Charleston International Airport experiences its lowest temperatures in January, with an average peak of 41°F (5°C) and a low of 23°F (-5°C).

Rainfall

In Charleston International Airport, in January, it is raining for 15 days, with typically 3.11" (79mm) of accumulated precipitation. In Charleston International Airport, during the entire year, the rain falls for 151 days and collects up to 41.93" (1065mm) of precipitation.

Daylight

The average length of the day in January is 10h and 16min.
On the first day of the month, sunrise is at 7:22 am and sunset at 5:24 pm. On the last day of January, sunrise is at 7:15 am and sunset at 5:51 pm EST.

Sunshine

In Charleston International Airport, the average sunshine in January is 4h.

UV index

The months with the lowest UV index are January and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a low health risk from unsafe exposure to UV radiation for the ordinary person.
Note: The maximum UV index of 2 during January leads to these instructions:
While most people can stay under the sun for an hour without burning, children must always be guarded against sun exposure. When the Sun is at its strongest around midday, find shade and limit exposure. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.