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United StatesThe climate of Charleston
The current climate in Charleston features temperatures ranging from a high of 32°C to a low of 15°C throughout the year. The average yearly temperature is around 25°C. At night, temperatures in the colder months average around 4°C and in the warmer months around 24°C.
Average temperatures and precipitation
This chart shows the average monthly maximum and minimum temperatures (in degrees Celsius) and average monthly rainfall (in millimeters) for Charleston, South Carolina.
Temperature records
The highest temperature recorded in Charleston in recent years was 38°C in May 2019. The lowest daytime temperature recorded was -1°C in December 2022.
Rainfall amount
On average, Charleston receives 1125 mm of precipitation each year. For comparison, New York gets 1142 mm of precipitation annually.
Best time to visit Charleston?
The best time to visit Charleston for sunny weather is February through July and September through December. During this period, you'll have nice temperatures and not too much rain, making it a great time to visit Charleston. In the other months of the year, there's too much rain or the temperature isn't ideal for a visit if you want sunny and pleasant weather.
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Climate Table of Charleston
The climate table of Charleston shows the average temperatures, rainfall, and UV index per month. The table provides an overview of the average day and night temperatures in degrees Celsius, the total amount of rainfall in millimeters, the total snowfall in centimeters, and the UV index for each month. Rainfall is always measured as water, even if it's snow or hail.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
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| Temp. max (°C) | 15 | 18 | 21 | 25 | 28 | 31 | 32 | 32 | 30 | 26 | 21 | 18 |
| Temp. min (°C) | 5 | 8 | 11 | 15 | 19 | 23 | 25 | 24 | 22 | 17 | 10 | 8 |
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| Precipitation (mm) | 75 | 54 | 66 | 116 | 117 | 95 | 113 | 126 | 104 | 95 | 57 | 107 |
| UV Index | 4 | 4 | 6 | 7 | 6 | 6 | 7 | 7 | 4 | 5 | 3 | 2 |
Click on the month name to see more weather details, like daily averages, temperatures, and precipitation for the past years in that month.
Temperature charts
These charts display the average temperatures in Charleston, South Carolina. The temperatures are shown in degrees Celsius and are calculated based on data from the past 10 years.
Average Temperature per Month in Charleston
Yearly Temperature in Charleston
Precipitation charts
These charts show the average amount of precipitation in Charleston, South Carolina. Precipitation is always measured as water, even when it falls as snow or hail. The amount of precipitation is displayed in millimeters, while snowfall is shown in centimeters.
Average Precipitation per Month in Charleston
Total Yearly Precipitation in Charleston
UV index chart
This chart shows the average UV index per month in Charleston, South Carolina. The UV index indicates the intensity of ultraviolet radiation and ranges from 0 to a maximum of 11.
Average UV Index per Month in Charleston
Weather experiences in Charleston
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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.