Charleston Weather, Climate and Best Time to Visit
Data source:Meteostat Update date:2025-09
Charleston year round climate
Spring (March–May): Average 61–73°F, mild and comfortable climate, moderate rainfall. Common activities: Outdoor walks, visiting historical sites. Recommended clothing: Light jacket, long-sleeved shirts, comfortable shoes.
Summer (June–August): Average 78–82°F, hot and humid, more rainfall, especially in August. Common activities: Beach activities, water sports. Recommended clothing: Light and breathable clothing, sun hat, sunscreen.
Autumn (September–November): Average 66–76°F, pleasant climate, less rainfall. Common activities: Outdoor activities, tasting local cuisine. Recommended clothing: Light jacket, long-sleeved or short-sleeved shirts.
Winter (December–February): Average 51–56°F, mild and humid, occasional rainfall. Common activities: Visiting indoor attractions, museum visits. Recommended clothing: Warm jacket, sweater, comfortable shoes.
Charleston climatological average
Annual average temperature: approx. 67.3°F / Annual rainfall: approx. 1357 mm / Summer humidity: 70%–80% / Rainiest month: August
Charleston monthly average temperature and precipitation
Month
Air temperature (°F)
Precipitation (mm)
January
51.1°F
77.3
February
56.1°F
93.4
March
61.7°F
132.5
April
66.4°F
102.9
May
73.4°F
94.5
June
79°F
111.2
July
82.6°F
171.2
August
81.1°F
215.1
September
76.3°F
144.8
October
66.7°F
27.2
November
61.2°F
57
December
52.5°F
130
Charleston weather for the next seven days
12/17
Wednesday
Overcast
59°F/42.4°F
12/18
Thursday
Heavy rain
66.2°F/55.6°F
12/19
Friday
Moderate rain
73.9°F/51.7°F
12/20
Saturday
Sunny
62.3°F/45.7°F
12/21
Sunday
Sunny
64.2°F/47.8°F
12/22
Monday
Sunny
54.9°F/45.3°F
12/23
Tuesday
Partly Cloudy
54.9°F/39.3°F
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