Weather in Charleston: May
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Average day temperature: | 70.9°F |
| Average night temperature: | 55.5°F | |
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Number of sunny days: | 8 days |
| Day length: | 13.8 - 14.6 hours | |
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Number of rainy days: | 3 days |
| Precipitation totals: | 1.4 in. | |
| more information | ||
14 days
forecast
forecast
| Charleston |
weather in
June
June
| Charleston |
Air temperature in May, °F
Show year:
2026
2025
2024
The highest day temperature during May of 2026 was 92°F. At the same time the lowest night temperature was 36°F. Daily and nightly averages during May were 73.3°F and 55.9°F.
Sunny, partly cloudy and cloudy days
Mostly all days in May are cloudy but sunny and partly cloudy days are also possible.
Precipitation total in May, in.
Precipitation total value in Charleston in May is 1.4 in. Other months of the year show relatively similar values.
Wind speed in May, mph
The average wind speed value in May is 5.4 mph
Average sunny hours
This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in May is: 7.3.
Best time for vacation in Charleston
Charleston on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Charleston
Local time: 09:26
July 21, tuesday
1200
91°F
NE
9 mph
9 mph
1500
97°F
NE
11 mph
11 mph
1800
73°F
NE
12 mph
12 mph
2100
70°F
NE
6 mph
6 mph
July 22, wednesday
0000
68°F
NE
4 mph
4 mph
0300
68°F
NE
4 mph
4 mph
0600
66°F
E
3 mph
3 mph
0900
68°F
SE
4 mph
4 mph
