South Carolina has a temperate climate. Spring and autumn are the most pleasant seasons. In winter, temperatures generally average 5-7°C (40-45°F) in inland areas, and 12-15ºC (55-60°F) by the shore. Summer temperatures, modified by mountains in some areas and by sea breezes in others, range from 24-29ºC (75-85°F), and can reach as high as 32ºC (90°F) and above.

Lightweights are advised throughout the year, with warmer clothes for winter. Beachwear is popular, and protection from the midday sun, such as sunglasses and sun hats, is advisable.