Monthly Historical AveragesSullivan's Island, SC
Average Temperature
High
22°
Feels 22
Low
15°
Feels 14
Average Precipitation
8 Days
64.3mm
0cm
Content continues below
Daily Historical Averages
S
M
T
W
T
F
S
ForecastWednesday, April 1, 2026
Day
21°Feels 21
Wind
17 km/h S
Gust
26 km/h
Humidity
77%
P.O.P
20%
Night
18°Feels 18
Wind
13 km/h S
Gust
19 km/h
Humidity
100%
P.O.P
20%
Historical AveragesApr 1
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity