Charleston weather in September (South Carolina, United States of America)

Wondering what the weather is like in Charleston during September? Use this page to get an overview of the month’s weather conditions.

Temperatures

During September, Charleston usually has high temperatures and high rainfall. Daytime temperatures generally settle around 29°C, while nighttime can see a dip to about 22°C.

Precipitation

Charleston in September usually receives high rainfall, averaging around 146 mm for the month. Historically, the month has about 11 days of rain.

Average sunshine

There are approximately 221 hours of sunshine this month, meaning plenty of sunny days and a vibrant atmosphere.

Should you favor a climate that's both dry and comfortably warm April and May typically offer the most agreeable circumstances. On the other hand, August tends to be characterized by conditions that may not be as optimal.

For an in-depth look at the yearly conditions, visit our specialized Charleston climate page with graphs.

 

Charleston, monthly averages in September

Min Temperature 22°C  

Max Temperature 29°C  

Chance of Rain 37%  

Precipitation 146 mm  

Rainy days 11 days  

Humidity 78%  

Sunshine 221 hours  

Percentage Sunshine 59%  

Where to go 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.

Weather conditions Weather

Temperatures

Precipitation

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Legend perfect weather pleasant tolerable unpleasant poor

Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

So, what should you wear in this month?

It's going to be warm! Consider airy clothing, t-shirts, and other summer clothes. Shorts for men made of cotton or linen are good options for staying cool. However, there's a good chance of rain, so bring a raincoat just in case.

What To Do

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

9/10

Cycling

7/10

Walking

7/10

Camping

6/10

Outdoor sports

7/10

Interested in more climate information?

This site provides you with all the information you need about the climate in Charleston.

Our site offers climate and forecast data for every country in the world. Are you going to the United States of America? On this website you can find historical weather averages for many cities in the United States of America. Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal travel conditions. Find out where to go with our weather planner.