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Charleston

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Charleston Weather, Climate and Best Time to Visit

Data source:Meteostat
Update date:2025-09

Charleston year round climate

  • Spring (March–May): Average 16.5–23°C, 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 26.1–28.1°C, 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 19.3–24.6°C, 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 10.6–13.4°C, 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. 19.6°C / Annual rainfall: approx. 1357 mm / Summer humidity: 70%–80% / Rainiest month: August

Charleston monthly average temperature and precipitation

Month
Air temperature (°C)
Precipitation (mm)
January
10.6°C
77.3
February
13.4°C
93.4
March
16.5°C
132.5
April
19.1°C
102.9
May
23°C
94.5
June
26.1°C
111.2
July
28.1°C
171.2
August
27.3°C
215.1
September
24.6°C
144.8
October
19.3°C
27.2
November
16.2°C
57
December
11.4°C
130

Charleston weather for the next seven days

12/17
Wednesday
Overcast
15°C/5.8°C
12/18
Thursday
Heavy rain
19°C/13.1°C
12/19
Friday
Moderate rain
23.3°C/10.9°C
12/20
Saturday
Sunny
16.8°C/7.6°C
12/21
Sunday
Sunny
17.9°C/8.8°C
12/22
Monday
Sunny
12.7°C/7.4°C
12/23
Tuesday
Partly Cloudy
12.7°C/4°C