Charleston weather by month

Check out Charleston weather averages by month. Compare detailed monthly climate statistics including temperature, rainfall and sunshine figures.

Temperature in Charleston (°C)

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Max temperature (daytime)
5°C maximum daytime temperature in January in Charleston5
7°C maximum daytime temperature in February in Charleston7
14°C maximum daytime temperature in March in Charleston14
19°C maximum daytime temperature in April in Charleston19
24°C maximum daytime temperature in May in Charleston24
28°C maximum daytime temperature in June in Charleston28
30°C maximum daytime temperature in July in Charleston30
29°C maximum daytime temperature in August in Charleston29
26°C maximum daytime temperature in September in Charleston26
20°C maximum daytime temperature in October in Charleston20
14°C maximum daytime temperature in November in Charleston14
8°C maximum daytime temperature in December in Charleston8
Min temperature (night-time)
-5°C minimum night-time temperature in January in Charleston-5
-4°C minimum night-time temperature in February in Charleston-4
1°C minimum night-time temperature in March in Charleston1
5°C minimum night-time temperature in April in Charleston5
10°C minimum night-time temperature in May in Charleston10
15°C minimum night-time temperature in June in Charleston15
18°C minimum night-time temperature in July in Charleston18
17°C minimum night-time temperature in August in Charleston17
13°C minimum night-time temperature in September in Charleston13
7°C minimum night-time temperature in October in Charleston7
2°C minimum night-time temperature in November in Charleston2
-3°C minimum night-time temperature in December in Charleston-3
Heat & Humidity
No heat & humidity in January in Charleston0
No heat & humidity in February in Charleston0
No heat & humidity in March in Charleston0
No heat & humidity in April in Charleston0
No heat & humidity in May in Charleston0
Moderate heat & humidity in June in CharlestonM
High heat & humidity in July in CharlestonH
Moderate heat & humidity in August in CharlestonM
Low heat & humidity in September in CharlestonL
No heat & humidity in October in Charleston0
No heat & humidity in November in Charleston0
No heat & humidity in December in Charleston0

Note: 0 = None, L = Low, M = Moderate, H = High, VH = Very high, E = Extreme

Sunshine & Daylight in Charleston

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Daily hours of sunshine
Daily hours of daylight
10 hours of daylight per day in January in Charleston10
11 hours of daylight per day in February in Charleston11
12 hours of daylight per day in March in Charleston12
13 hours of daylight per day in April in Charleston13
14 hours of daylight per day in May in Charleston14
15 hours of daylight per day in June in Charleston15
15 hours of daylight per day in July in Charleston15
14 hours of daylight per day in August in Charleston14
12 hours of daylight per day in September in Charleston12
11 hours of daylight per day in October in Charleston11
10 hours of daylight per day in November in Charleston10
10 hours of daylight per day in December in Charleston10
UV Index (Maximum)
UV (maximum) index 2 (Low) in January in Charleston2
UV (maximum) index 3 (Moderate) in February in Charleston3
UV (maximum) index 5 (Moderate) in March in Charleston5
UV (maximum) index 7 (High) in April in Charleston7
UV (maximum) index 8 (Very High) in May in Charleston8
UV (maximum) index 9 (Very High) in June in Charleston9
UV (maximum) index 9 (Very High) in July in Charleston9
UV (maximum) index 9 (Very High) in August in Charleston9
UV (maximum) index 7 (High) in September in Charleston7
UV (maximum) index 5 (Moderate) in October in Charleston5
UV (maximum) index 3 (Moderate) in November in Charleston3
UV (maximum) index 2 (Low) in December in Charleston2

Rainfall in Charleston

  Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Number of days with some rain
15 days with some rainfall in January in Charleston15
14 days with some rainfall in February in Charleston14
14 days with some rainfall in March in Charleston14
14 days with some rainfall in April in Charleston14
13 days with some rainfall in May in Charleston13
11 days with some rainfall in June in Charleston11
13 days with some rainfall in July in Charleston13
11 days with some rainfall in August in Charleston11
10 days with some rainfall in September in Charleston10
10 days with some rainfall in October in Charleston10
12 days with some rainfall in November in Charleston12
14 days with some rainfall in December in Charleston14
Average monthly rainfall (mm)
79 mm monthly rainfall in January in Charleston79
76 mm monthly rainfall in February in Charleston76
97 mm monthly rainfall in March in Charleston97
86 mm monthly rainfall in April in Charleston86
97 mm monthly rainfall in May in Charleston97
86 mm monthly rainfall in June in Charleston86
123 mm monthly rainfall in July in Charleston123
102 mm monthly rainfall in August in Charleston102
87 mm monthly rainfall in September in Charleston87
70 mm monthly rainfall in October in Charleston70
80 mm monthly rainfall in November in Charleston80
82 mm monthly rainfall in December in Charleston82

More about Charleston

Charleston by month

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Recommended for West Virginia

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The climate guide for West Virginia (Charleston) shows long term monthly weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

What's the climate like in Charleston?

Charleston has a temperate climate with hot summers and some rainfall in all months.

Metric (°C / mm)  |  Imperial (°F / inches)

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Tropical storm risk: Charleston, West Virginia hurricane season

% of month affected by tropical storms
0
0
0
0
0
0
0
0
1.2%
0
0
0
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

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More about the USA

Compare Charleston with the USA

Below the Charleston chart shows average maximum daytime temperature for Charleston, West Virginia, USA and the USA (Washington).

Maximum daytime temperature (°C)

Charleston, West Virginia, USA
USA (Washington)
5
5
7
7
14
13
19
19
24
24
28
29
30
31
29
30
26
26
20
20
14
14
8
8
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Metric (°C / mm)  |  Imperial (°F / inches)

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