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

During Charleston International Airport's transition into October, the average high-temperature lessens, moving from a warm 78.8°F (26°C) in September to an agreeable 68°F (20°C). Charleston International Airport's average low-temperature of 44.6°F (7°C) in October reflects a considerable decline from the daytime peak.

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

Sunshine

In Charleston International Airport, the average sunshine in October is 6h.

UV index

In October, the average daily maximum UV index is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from exposure to the Sun's UV rays for the ordinary person.
Note: The maximum daily UV index, 5 in October, converts into the following recommendations:
Undertake precautions - Guarding against sun damage is counselled. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance.