World Resorts USA Charleston

Charleston Monthly Weather Averages

Please click on any column to get detailed information about Charleston weather in that particular month. You will get daily weather information for that month for the last several years.

Day & Night air temperature, °F

jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec
0
15
30
45
60
75
90
105
120
58.8
65.8
76.3
83.6
87.3
88.9
84.9
79.4
72.2
66.4
61.5
55.3
51.7
56.9
65.8
74.0
77.4
78.2
74.5
68.5
60.8
56.6
52.7
47.6
Day temperature   
Night temperature

The warmest month in Charleston is july. The average daily temp is 88.9°F. The average nightly temp is 78.2°F.

Sea water temperature, °F

jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec
0
14
28
42
56
70
84
98
112
60.4
65.9
74.1
81.2
83.7
83.6
80.2
74
66.3
60.8
57.8
58

The warmest sea temperature usually observed in August. Average daily sea water temperature during this month is 83.7°F.

Precipitation total, in.

jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec
0.0
1.1
2.3
3.4
4.5
5.6
6.8
7.9
3.8
1.9
2.2
4.8
6.6
5.4
4.5
3
3.9
2.6
2.5
1.9

January is the month with least precipitations during the year. The average precipitation totals for this month is 1.9 in. The month with most precipitation total is August.

Number of rainy days

jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec
0
1
2
3
4
5
6
7
8
9
10
11
12
13
4
3
3
6
11
9
8
5
4
4
3
3

This chart shows averages for the last three years. It shows medium and heavy rains only, it doesn't show light rains.

Wind speed, mph
jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec
0
1
2
3
4
5
6
7
8
9
10
8.2
8.1
7.9
8.3
7.4
7.7
8.2
8.4
9.1
9.1
8.5
8.4
Sunny, partly cloudy and cloudy days
1
2
3
4
5
6
7
8
9
10
11
12
0
5
10
15
20
25
30
35
12
9
9
9
10
7
7
7
6
10
10
11
7
9
9
10
13
14
14
11
7
9
8
8
12
12
14
11
8
10
9
14
16
12
10
12
Cloudy days   
Partly cloudy days   
Sunny days
Average sunny hours
jan
feb
mar
apr
may
jun
jul
aug
sep
oct
nov
dec
0
1
2
3
4
5
6
7
8
9
10
11
5.6
6.1
7.3
7.2
7.4
7.5
8.3
8.9
9.5
6.9
5.8
5.9

Sunny hours are calculated based on the average daily number of hours while sunlight can reach the ground. It depends on day length and cloudiness during the day.

* Charts above show average data for the last 3 years.

Best time for vacation in Charleston

Sunniest months:
April 16 days
October 15 days
May 15 days
Warmest months:
July 89.3 °F
August 87.8 °F
June 86.0 °F
Warmest sea temp:
August 83.7 °F
July 83.6 °F
September 81.2 °F
Coldest months:
January 55.9 °F
February 60.2 °F
December 60.7 °F
Rainiest months:
August 10 days
July 9 days
June 7 days
Windiest months:
March 9.5 mph
April 9.4 mph
February 9.0 mph

Charleston on a weather map

Leaflet | Tiles © Esri
Places in USA:
Name
°F
+36°F
+45°F
+79°F
+79°F
+81°F
+68°F
+77°F
+41°F
+79°F
+63°F
+55°F
+75°F
+75°F
+70°F
+34°F
24 Hours Forecast
Charleston
Local time: 20:20
April 07, monday
2100
72°F
E
9 mph
April 08, tuesday
0000
66°F
E
9 mph
0300
61°F
E
11 mph
0600
59°F
SE
9 mph
0900
59°F
S
8 mph
1200
68°F
S
6 mph
1500
72°F
S
3 mph
1800
68°F
W
5 mph
Units of measurement: °C / °F