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May weather forecast in Charleston

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

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

Sun

Sunday

Mon

Monday

Tue

Tuesday

Wed

Wednesday

Thu

Thursday

Fri

Friday

Sat

Saturday

27 April, sun

	761 mmHg		72%
	4.9 m/s		+22

27 April, Sunday. day, 25°; night, 16°; clear

28 April, mon

	762 mmHg		70%
	4.9 m/s		+22

28 April, Monday. day, 25°; night, 16°; partly cloudy

29 April, tue

	762 mmHg		71%
	4.8 m/s		+23

29 April, Tuesday. day, 25°; night, 16°; clear

30 April, wed

	762 mmHg		73%
	5 m/s		+23

30 April, Wednesday. day, 25°; night, 16°; rain

1 May, thu

	762 mmHg		72%
	5 m/s		+23

1 May, Thursday. day, 25°; night, 16°; clear

2 May, fri

	762 mmHg		71%
	4.69 m/s		+23

2 May, Friday. day, 26°; night, 16°; clear

3 May, sat

	762 mmHg		72%
	4.6 m/s		+23

3 May, Saturday. day, 27°; night, 17°; clear

4 May, sun

	762 mmHg		73%
	4.4 m/s		+23

4 May, Sunday. day, 26°; night, 17°; partly cloudy

5 May, mon

	761 mmHg		73%
	4.6 m/s		+23

5 May, Monday. day, 26°; night, 17°; clear

6 May, tue

	761 mmHg		72%
	4.6 m/s		+23

6 May, Tuesday. day, 26°; night, 17°; partly cloudy

7 May, wed

	762 mmHg		70%
	4.6 m/s		+24

7 May, Wednesday. day, 26°; night, 16°; clear

8 May, thu

	761 mmHg		69%
	4.69 m/s		+24

8 May, Thursday. day, 28°; night, 17°; clear

9 May, fri

	761 mmHg		69%
	4.69 m/s		+24

9 May, Friday. day, 28°; night, 18°; clear

10 May, sat

	762 mmHg		70%
	4.3 m/s		+24

10 May, Saturday. day, 28°; night, 18°; clear

11 May, sun

	761 mmHg		73%
	4.5 m/s		+24

11 May, Sunday. day, 27°; night, 18°; partly cloudy

12 May, mon

	762 mmHg		71%
	4.5 m/s		+23

12 May, Monday. day, 27°; night, 18°; partly cloudy

13 May, tue

	762 mmHg		72%
	4.4 m/s		+24

13 May, Tuesday. day, 27°; night, 17°; clear

14 May, wed

	763 mmHg		71%
	4.3 m/s		+24

14 May, Wednesday. day, 26°; night, 17°; rain

15 May, thu

	762 mmHg		72%
	4.3 m/s		+24

15 May, Thursday. day, 27°; night, 17°; rain

16 May, fri

	762 mmHg		71%
	4.19 m/s		+24

16 May, Friday. day, 27°; night, 17°; partly cloudy

17 May, sat

	761 mmHg		75%
	4.3 m/s		+24

17 May, Saturday. day, 27°; night, 18°; rain

18 May, sun

	761 mmHg		77%
	4.6 m/s		+24

18 May, Sunday. day, 27°; night, 19°; rain

19 May, mon

	762 mmHg		73%
	4.4 m/s		+24

19 May, Monday. day, 27°; night, 19°; overcast

20 May, tue

	762 mmHg		73%
	4.3 m/s		+25

20 May, Tuesday. day, 28°; night, 18°; clear

21 May, wed

	762 mmHg		73%
	4.1 m/s		+25

21 May, Wednesday. day, 28°; night, 19°; rain

22 May, thu

	762 mmHg		73%
	4.1 m/s		+25

22 May, Thursday. day, 28°; night, 19°; rain

23 May, fri

	762 mmHg		75%
	4.19 m/s		+25

23 May, Friday. day, 29°; night, 19°; rain

24 May, sat

	762 mmHg		72%
	4.19 m/s		+25

24 May, Saturday. day, 29°; night, 19°; clear

25 May, sun

	762 mmHg		73%
	4.3 m/s		+25

25 May, Sunday. day, 29°; night, 20°; partly cloudy

26 May, mon

	762 mmHg		73%
	4.3 m/s		+26

26 May, Monday. day, 29°; night, 20°; partly cloudy

27 May, tue

	761 mmHg		74%
	4.6 m/s		+26

27 May, Tuesday. day, 29°; night, 20°; rain

28 May, wed

	761 mmHg		74%
	4.4 m/s		+26

28 May, Wednesday. day, 29°; night, 21°; rain

29 May, thu

	761 mmHg		76%
	4 m/s		+26

29 May, Thursday. day, 29°; night, 21°; rain

30 May, fri

	761 mmHg		76%
	3.8 m/s		+26

30 May, Friday. day, 29°; night, 20°; overcast

31 May, sat

	762 mmHg		76%
	4 m/s		+26

31 May, Saturday. day, 29°; night, 20°; rain

Average data for 10 years

Charleston May

11

sunny days

11

days with precipitation

5

cloudy days

11 sunny days; 11 days with precipitation; 5 cloudy days;

73

%

air humidity

2.9

m/s

WindS

87

mm of precipitation

(7% of annual average)

+24

°C

Water temperature

air humidity 73%; 87 millimeters of precipitation (7% of annual average); Wind southerly 2.9 Meters per second; Water temperature +24°

Weather graphs for May

TemperatureWater temperaturePrecipitation chance, %Humidity, %Wind, m/sPressure, mmHg

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S

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S

S

S

S

S

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S

S

S

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SE

SE

1

Average data for 10 years

2

3

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9

10

11

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21

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31

Daytime temperature

Night-time temperature

Cities near you

Charlotte
Palm Coast
Jacksonville
Columbia
Raleigh
Hilton Head Island
Jacksonville Beach
Atlantic Beach
Wilmington

Cities with similar weather in May

Side
Ayia Napa
Larnaca
Protaras
Aqaba
Eylat
Rio de Janeiro
Aksu
Manavgat

The weather forecast for May 2025 is based on historical data from the past 10 years.

In May, the weather in Charleston is typically warm. Average daily high temperature in May is about 28 degrees above zero. On average, Charleston has 11 rainy, 11 sunny, 7 partly cloudy, and 2 cloudy days in May. The rains are usually heavy.

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