Charleston Weather in September
September in Charleston averages 27°C (81°F) during the day and 14°C (57°F) at night. Quite a bit of rainfall is typical this month, with around 97 mm (3.8 in) on average. An umbrella is a good idea.
Rainfall in Charleston in September
Expect around 11 days of rain based on historical data, with 97 mm (3.8 in) average. When it rains this month, it tends to come down fairly heavily. Showers can be substantial even if they don't last all day.
Temperature in Charleston in September
September tends to be one of the perfect months in Charleston, with 27°C (81°F) in the afternoon and 14°C (57°F) overnight. Overall, the month follows a fairly predictable daily temperature pattern. With overnight lows of 14°C (57°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep.If your ideal day consists of dry skies and pleasant temperatures, April, September and October typically offer the best circumstances for Charleston.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Charleston's climate page.
Charleston Temperature in September
Min Temperature
14°C (57°F)
Max Temperature
27°C (81°F)
Chance of Rain
36%
Precipitation
97 mm (3.8 in)
Rainy days
11 days
Best Places in the United States of America in September
Find out more about the weather in the United States of America and which places have the best travel conditions in this month. See all of the United States of America in September →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Charleston in September
Warm temperatures in September make for comfortable sightseeing weather. Pack breathable fabrics like cotton shirts, knee-length shorts or skirts, and comfortable walking shoes. A thin long sleeve for indoor spaces is handy. Prepare for significant rainfall with proper waterproof clothing and shoes.What To Do in Charleston in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit the United States of America, check out our Charleston's climate page.
See the full Charleston climate overview or explore weather in the United States of America.
