Normal weather for Charleston in September

It's warm in September in Charleston with an average temperature of 27°C. Temperatures this month range from a low of 24°C to a high of 31°C. At night, you can expect temperatures between 4°C and 14°C.

In September, there is an average of 42 mm of precipitation, spread over 7 days. Of the total precipitation, about 0,1 cm falls as snow in September. The wind speed is around 4 Bft, mostly coming from the Southwest.

Charleston in September		New York
Average Temperature	27°C	27°C
High Temp	31°C	31°C
Low Temp	24°C	21°C
Total Precipitation	42 mm	57 mm
Rainy Days	7 days	9 days
Total Snowfall	0,1 cm	0 cm
Snowy Days	1 day	0 days

Start of September

The month of September starts in Charleston with hot temps, averaging around 29°C during the day and nights around 9°C. There’s little chance of precipitation. The weather’s mostly sunny and dry.

With the temperature difference between day and night, it’s smart to wear layers. For the daytime, light clothing like shorts or a dress, and a hat and sunglasses are perfect. In the evening and morning, choose a light jacket, sweater or hoodie, and long pants.

Mid September

By mid-September, daytime temps drop to around 27°C, with nights around 8°C. There’s a chance of some showers during this time, but plenty of dry and sunny days too.

Since it cools down at night, it’s a good idea to wear layers. For the daytime, light clothing like shorts or a dress, and a hat and sunglasses are perfect. In the evening and morning, choose a light jacket, sweater or hoodie, and long pants.

End of September

By the end of September, the average daytime temperature in Charleston is around 26°C, while nighttime temps are about 7°C. There’s hardly any chance of precipitation. The weather will be mostly dry with plenty of sun.

Because temperatures drop in the evening, wearing layers is recommended. For the daytime, light clothing like shorts or a dress, and a hat and sunglasses are perfect. In the evening and morning, go for a warm jacket, sweater or hoodie, and long pants.

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UV index

The UV index is a maximum of 9 this month. That's a very high value on the intensity scale of 1 to 11. Unprotected skin can burn within 10-15 minutes.

Is September a good time to visit Charleston?

Looking for great weather? September is a good time to be in Charleston. The temperatures are nice, and there’s not too much rain.

Temperature records for Charleston in September

Check out the climate of Charleston for all months and discover the best travel time

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Daily Temperature in September in Charleston

This chart shows the average daily high and low temperatures in September for Charleston, in degrees Celsius. The red line represents the highs, and the blue line shows the lows. The days of the month are displayed at the bottom of the chart. The data, based on historical observations, provide the average temperatures for this month.

Daily Precipitation in September in Charleston

The chart below shows the average daily precipitation in September for Charleston, measured in millimeters over the past few years. Precipitation is always measured as water, even if it’s snow or hail. The days of the month are listed at the bottom of the chart.

A low average precipitation means that the chance of rain on that day is usually small, while a higher average suggests that it rained more often. But remember, it’s just an average, and every day can be different. Based on historical weather data for September, you can expect about 7 days of precipitation in Charleston.

Daily Precipitation in September in Charleston

Daily Snowfall in September in Charleston

This chart shows the average daily snowfall in September in Charleston, measured in centimeters. The bottom of the chart shows the days of the month. The data is based on historical measurements and gives an idea of the average snowfall in September.

Daily UV Index in September in Charleston

This chart shows the average daily UV index in September in Charleston, with the UV index ranging from 0 to a maximum of 11. The bottom of the chart shows the days of the month. Based on historical data, this chart provides an idea of the daily UV radiation levels you can expect.

Temperature in September in Charleston Over the Years

This chart shows the average temperature in September in Charleston, measured in degrees Celsius, over the past few years.

Total Precipitation in September in Charleston Over the Years

This chart shows the average precipitation in September in Charleston, measured in millimeters over the past years. Precipitation is always measured as water, whether it’s snow or hail.

Snowfall in September in Charleston per year

This chart shows the average snowfall in September in Charleston, measured in centimeters, over the past few years.

Snowfall in September in Charleston over the past years

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Daily Climate in September for Charleston

Click on any day in September to get detailed info about the usual weather on that day in Charleston. Check out the historical temperatures and precipitation over the past 10 years on this day.

Average Weather in Charleston by Month

Click on a month below to see detailed weather info for Charleston. Based on historical weather data, you can see the average temperature, precipitation, wind, and UV index for each day of the month.