October weather forecast
Charleston International Airport, SC

By October, Charleston experiences more profound signs of autumn, with noticeably cooler weather and shorter days. The surmise of temperature fluctuation from 45°F (7.2°C) to 68°F (20°C) ascertains the advent of moderate cold breezes in the evening. The days are characterized by warm sunshine, whereas nights exhibit a noticeable coolness. The decline in the UV index signals lessened exposure to sunlight. October weather is indeed a time of striking transitions and vibrant, earthy hues.

Temperature

In the transition to October, Charleston International Airport observes a drop in the average high-temperature, moving from a moderately hot 78.8°F (26°C) in September to a pleasant 68°F (20°C). October nights present a stark temperature decrease to a chilly 44.6°F (7°C).

Rainfall

The month with the least rainfall is October, when the rain falls for 10 days and typically collects 2.76" (70mm) of precipitation.

Daylight

In Charleston International Airport, the average length of the day in October is 11h and 21min.
On the first day of October, sunrise is at 7:14 am and sunset at 7:04 pm. On the last day of the month, sunrise is at 7:37 am and sunset at 6:29 pm EDT.

Sunshine

The average sunshine in October is 6h.

UV index

In October, the average daily maximum UV index in Charleston International Airport is 5. A UV Index value of 3 to 5 symbolizes a medium health hazard from unsafe exposure to UV radiation for the average person.
Note: The maximum daily UV index, 5 in October, converts into the following recommendations:
Heed the precautions - It is counselled to guard against solar damage. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Equip yourself with UVA and UVB-filtering sunglasses on clear, sunny days.