Measurements:
°C
°F
CURRENT WEATHER
13:55
Charleston
84°F
SE 6 mph
Feels like: 82°F
Precip: 0%
World Resorts USA Charleston Weather

7 Day Weather Forecast

05.14
thu
DAY
80°F
SE 8 mph
precip
0%
NIGHT
70°F
SW 12 mph
precip
0%
05.15
fri
DAY
74°F
SW 6 mph
precip
0%
NIGHT
66°F
N 5 mph
precip
0%
05.16
sat
DAY
80°F
NW 9 mph
precip
0%
NIGHT
74°F
NW 8 mph
precip
0%
05.17
sun
DAY
82°F
N 9 mph
precip
0%
NIGHT
72°F
NW 8 mph
precip
0%
05.18
mon
DAY
82°F
NW 7 mph
precip
0%
NIGHT
72°F
NW 6 mph
precip
0%
05.19
tue
DAY
82°F
NW 7 mph
precip
0%
NIGHT
72°F
NW 6 mph
precip
0%
05.20
wed
DAY
84°F
NW 7 mph
precip
0%
NIGHT
74°F
N 7 mph
precip
0%

Charleston Sea Water Temperature in May, °F

Select Year: 2025 2024 2023

The average sea surface temperature in May 2025 for Charleston was 24.2°F. The maximum and minimum values were 22.0°F and 25.9°F respectively.

Charleston on the Weather Map

Best Time to Visit Charleston
The most sunny months:
April 16 days
October 15 days
May 15 days
The most warm months:
July 93.8 °F
August 91.8 °F
June 90.2 °F
Warmest sea temperature:
August 87.5 °F
July 87.4 °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
June 7 days
The most windy months:
March 9 mph
April 9 mph
February 9 mph
more details