Weather · Charleston, United States
Charleston Weather in May
May in Charleston averages 26°C by day and 16°C at night, with about 158mm of rain. That makes it a reasonable time to visit.
Avg high
26°C
79°F
Avg low
16°C
61°F
Rainfall
158mm
#1 wettest of 12
What to pack
Summer clothes by day; a light layer for evenings. Pack a rain jacket or travel umbrella, showers are frequent this month.
Timing a trip around the weather? A Local Friend in Charleston builds it around the season for you.