What’s the climate like in Charleston?
The current climate of Charleston features average monthly temperatures ranging from highs of 32°C during the day to lows of 15°C. 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.
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.
On average, Charleston receives 1125 mm of precipitation each year. For comparison, London gets 701 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 good 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.
Climate Table of Charleston
The climate table of Charleston shows the average temperatures, precipitation, and UV index per month. The table gives an overview of the average day and night temperatures in degrees Celsius, the total amount of precipitation in millimetres, the total snowfall in centimetres, and the UV index for each month. Precipitation 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.
- Average yearly temperature: 25°C
- Highest temperature: 32°C in July and August
- Lowest temperature: 15°C in January
- Precipitation: 1125 mm per year, averaging 94 mm per month
- Driest months: 54 mm in February, 57 mm in November and 66 mm in March
- Wettest months: 126 mm in August, 117 mm in May and 116 mm in April
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Table of Contents
Average Temperature per Month in Charleston
This graph shows the average maximum temperatures per month in Charleston, South Carolina. The temperatures are shown in degrees Celsius and the average is calculated based on the recorded temperatures per month from past years.
Average Precipitation per Month in Charleston
This graph shows how much precipitation Charleston, South Carolina, gets on average per month. Precipitation is always measured as water, even if it's snow or hail. This makes it easy to compare how much has fallen, regardless of the form of precipitation. The amount of precipitation is measured in millimetres and the average is calculated based on the recorded precipitation per month from past years.
Average UV Index per Month in Charleston
This graph 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.
Yearly Temperature in Charleston
This graph shows the average yearly temperature in Charleston, South Carolina. The yearly temperature, expressed in degrees Celsius, is the average of all twelve monthly temperatures summed up for that year.
Total Yearly Precipitation in Charleston
This chart shows the total yearly precipitation in Charleston, South Carolina, over the past few years. The total yearly precipitation, measured in millimetres, is the sum of all the rain that fell in the twelve months of that year.
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.
