Measurements:
°C
°F
CURRENT WEATHER
19:48
Charleston
72°F
SW 6 mph
Feels like: 72°F
Precip: 28%
World Resorts USA Charleston Weather

7 Day Weather Forecast

10.05
mon
DAY
72°F
SW 6 mph
precip
32%
NIGHT
72°F
SW 6 mph
precip
26%
10.06
tue
DAY
80°F
SW 14 mph
precip
15%
NIGHT
74°F
SW 11 mph
precip
18%
10.07
wed
DAY
82°F
SW 12 mph
precip
9%
NIGHT
72°F
SW 6 mph
precip
20%
10.08
thu
DAY
80°F
SW 7 mph
precip
13%
NIGHT
72°F
SW 5 mph
precip
19%
10.09
fri
DAY
80°F
SW 8 mph
precip
11%
NIGHT
76°F
SW 13 mph
precip
22%
10.10
sat
DAY
76°F
W 14 mph
precip
73%
NIGHT
78°F
NW 12 mph
precip
76%
10.11
sun
DAY
88°F
N 12 mph
precip
20%
NIGHT
82°F
NE 9 mph
precip
21%

Charleston Sea Water Temperature in October, °F

Select Year: 2025 2024 2023

The average sea surface temperature in October 2025 for Charleston was 22.3°F. The maximum and minimum values were 18.9°F and 26.3°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 91.9 °F
June 90.2 °F
Warmest sea temperature:
August 87.6 °F
July 87.6 °F
September 84.6 °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
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