16.05
sat
sat
Day
75°F
NW 9 mph
Precip.
0%
0%
Night
72°F
NW 7 mph
Precip.
0%
0%
17.05
sun
sun
Day
81°F
N 9 mph
Precip.
72%
72%
Night
72°F
N 9 mph
Precip.
0%
0%
18.05
mon
mon
Day
81°F
NW 7 mph
Precip.
0%
0%
Night
70°F
NW 7 mph
Precip.
0%
0%
19.05
tue
tue
Day
81°F
NW 8 mph
Precip.
0%
0%
Night
70°F
NW 7 mph
Precip.
0%
0%
20.05
wed
wed
Day
82°F
N 6 mph
Precip.
0%
0%
Night
72°F
N 7 mph
Precip.
0%
0%
21.05
thu
thu
Day
82°F
N 8 mph
Precip.
0%
0%
Night
72°F
NW 5 mph
Precip.
0%
0%
22.05
fri
fri
Day
81°F
NW 9 mph
Precip.
72%
72%
Night
72°F
NW 7 mph
Precip.
0%
0%
23.05
sat
sat
Day
81°F
NW 10 mph
Precip.
82%
82%
Night
73°F
NW 6 mph
Precip.
21%
21%
24.05
sun
sun
Day
81°F
N 7 mph
Precip.
100%
100%
Night
75°F
N 7 mph
Precip.
0%
0%
25.05
mon
mon
Day
82°F
N 8 mph
Precip.
49%
49%
Night
75°F
N 7 mph
Precip.
100%
100%
26.05
tue
tue
Day
77°F
NE 12 mph
Precip.
100%
100%
Night
73°F
NE 9 mph
Precip.
0%
0%
27.05
wed
wed
Day
79°F
NE 9 mph
Precip.
100%
100%
Night
73°F
NE 11 mph
Precip.
28%
28%
28.05
thu
thu
Day
81°F
E 8 mph
Precip.
0%
0%
Night
72°F
W 15 mph
Precip.
100%
100%
29.05
fri
fri
Day
73°F
SW 19 mph
Precip.
0%
0%
Night
68°F
W 11 mph
Precip.
100%
100%
sea water
temperature
temperature
| Charleston |
monthly
weather
weather
| Charleston |
current
weather
weather
| Charleston |
7 days
forecast
forecast
| Charleston |
Sea water temperature in May, °F
Show year:
2026
2025
2024
The average sea water temperature in May of 2026 was 70.7°F. The highest and lowest sea temperatures during the month were 72.9°F and 68.5°F.
Air temperature in Charleston, °F
Precipitation total in Charleston, in.
* Charts above show average data for the last 3 years.
Best time for vacation in Charleston
Charleston on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Charleston
Local time: 18:15
May 16, saturday
2100
72°F
NW
7 mph
7 mph
May 17, sunday
0000
72°F
NW
7 mph
7 mph
0300
72°F
N
7 mph
7 mph
0600
72°F
N
6 mph
6 mph
0900
77°F
N
6 mph
6 mph
1200
81°F
N
9 mph
9 mph
1500
81°F
N
11 mph
11 mph
1800
79°F
N
9 mph
9 mph
