Measurements:
°C
°F
CURRENT WEATHER
15:11
Charleston
88°F
NE 6 mph
Feels like: 100°F
Precip: 15%
World Resorts USA Charleston Weather

7 Day Weather Forecast

08.05
wed
DAY
90°F
NE 9 mph
precip
10%
NIGHT
86°F
NW 7 mph
precip
9%
08.06
thu
DAY
92°F
N 7 mph
precip
57%
NIGHT
84°F
N 7 mph
precip
13%
08.07
fri
DAY
92°F
N 7 mph
precip
10%
NIGHT
84°F
N 7 mph
precip
8%
08.08
sat
DAY
92°F
N 8 mph
precip
12%
NIGHT
84°F
N 8 mph
precip
9%
08.09
sun
DAY
94°F
N 8 mph
precip
9%
NIGHT
86°F
N 9 mph
precip
9%
08.10
mon
DAY
92°F
NE 11 mph
precip
6%
NIGHT
86°F
NE 11 mph
precip
36%
08.11
tue
DAY
96°F
NE 10 mph
precip
4%
NIGHT
88°F
NE 9 mph
precip
22%

Charleston Sea Water Temperature in August, °F

Select Year: 2025 2024 2023

The average sea surface temperature in August 2025 for Charleston was 28.9°F. The maximum and minimum values were 27.8°F and 30.5°F respectively.

Charleston on the Weather Map

Best Time to Visit Charleston
The most sunny months:
April 16 days
May 16 days
October 15 days
The most warm months:
July 93.9 °F
August 91.8 °F
June 90.2 °F
Warmest sea temperature:
July 87.6 °F
August 87.5 °F
September 84.5 °F
The most cold months:
January 56.4 °F
February 61.0 °F
December 61.7 °F
The most rainy months:
August 9 days
July 8 days
September 6 days
The most windy months:
March 9 mph
April 9 mph
February 9 mph
more details