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When is the best time to visit Charleston?
In general the best time to visit Charleston is probably August, when the weather is usually great. The hottest months are June, July, August, while the coldest months are January, February, December.
Depending on the activities you want to experience, you may choose different months to visit:
- The best time for a sun tanning holiday is June, July, August. Average maximum temperatures are up to +88°F in August and it has 3 sunny days on average.
- In general, it’s pleasant to walk and do outdoor activities during March - November.
- If you want to avoid wet weather, then your choice is July, August, September with the lowest chance of rain.
Average weather in Charleston in different months
This is the average weather in Charleston for each month based on historic data:
January, February, March, April, May, October usually has good weather. Average maximum temperature reaches +81°F during May.
In June, July, August, September, November, December the weather is average. Expect around 104 rainy days, and the precipitation amounts to approximately 179 mm in August.
Climate in Charleston
Here is the detailed breakdown of the climate in Charleston for each month:
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Maximum Temperature | |||||||||||
| +79°F | +84°F | +90°F | +91°F | +100°F | +100°F | +99°F | +100°F | +97°F | +95°F | +84°F | +81°F |
| Average Maximum Temperature | |||||||||||
| +59°F | +63°F | +68°F | +73°F | +81°F | +86°F | +88°F | +88°F | +82°F | +75°F | +68°F | +61°F |
| Minimum Temperature | |||||||||||
| +10°F | +18°F | +19°F | +32°F | +48°F | +55°F | +64°F | +61°F | +54°F | +37°F | +28°F | +10°F |
| Avg. water temperature | |||||||||||
| - | - | - | - | - | - | - | - | - | - | - | - |
| Humidity, % | |||||||||||
| 73 | 74 | 73 | 73 | 76 | 79 | 80 | 82 | 81 | 78 | 77 | 76 |
| Rain, mm | |||||||||||
| 80 | 86 | 92 | 75 | 74 | 136 | 151 | 179 | 140 | 92 | 68 | 78 |
| Snow, mm | |||||||||||
| 2 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 |
| Average wind speed, m/s | |||||||||||
| 3 | 3 | 3 | 3 | 3 | 3 | 3 | 2 | 3 | 3 | 3 | 3 |
| Sunny Days | |||||||||||
| 9 | 8 | 9 | 11 | 9 | 5 | 3 | 3 | 6 | 12 | 11 | 9 |
| Cloud Days | |||||||||||
| 10 | 9 | 10 | 8 | 8 | 4 | 4 | 3 | 5 | 7 | 9 | 10 |
| Rainy Days | |||||||||||
| 11 | 11 | 12 | 11 | 14 | 19 | 22 | 23 | 19 | 12 | 10 | 11 |
| Snowy Days | |||||||||||
| 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Average Temperature
Here are the average maximum and minimum temperatures in Charleston during the whole year:
The hottest month in Charleston is August with average maximum temperature going up to +88°F. The coldest month is January with the lowest temperatures of +43°F.
Humidity
The temperature feels different depending on humidity. Here is how humidity in Charleston looks throughout the year, in %:
The most humid month in Charleston is August with average humidity going up to 82%. The least humid month is January with an average humidity of 73%.
Rain
Amount of rainfall in mm. in Charleston during the whole year based on historical data:
The sunniest and driest month is October with approximately 12 sunny days and a total precipitation of around 92 mm. The rainiest and wettest month is August with approximately 23 rainy days and 179 mm of total precipitation.
Snow
Amount of snow in mm. in Charleston during the whole year based on historical data:
The snowiest month is December with approximately 0 snowy days.
FAQ
Frequently asked questions about the weather in Charleston:
What is the hottest month in Charleston?
The hottest month in Charleston is August with average maximum temperature of +88°F.
What is the coldest month in Charleston?
The coldest month in Charleston is January with minimum temperatures of +43°F.
Is Charleston worth visiting in winter?
If you are planning to visit Charleston in winter you can expect pretty good weather. The best month is August with +88°F and 3 sunny days.
When does it rain the least in Charleston?
if you're looking to visit Charleston when it rains the least, you should plan your trip for August, July, September. During this time, rainfall is rare with the driest month being November with only 68 mm of rain.
Other cities in USA
Check out the weather for other cities in USA.
Monthly weather in Charleston
Source of the data
For this page, we’ve looked at the typical weather in Charleston, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.
