Charleston County Weather Forecast
Charleston County weather: 85°F, clear sky. Hourly forecast, 14-day outlook, UV, air quality and the best time to visit.
UV index in Charleston County
Use SPF 30+, a hat and sunglasses; seek shade near midday. Burn times are approximate, for unprotected skin at peak UV.
Health and safety today
| Skin and UV | No protection needed for most skin types. |
|---|---|
| Heat stress | The heat index is 95°F, higher than the air temperature because humidity is 73%. Sweat evaporates slowly, so drink before you feel thirsty and take shade breaks. |
| Pets | Pavement can be 20°C hotter than the air. Walk dogs early or late, never leave animals in cars, and carry water. |
| Older adults | Heat builds up slowly indoors. Check on anyone over 65 living alone and keep rooms ventilated. |
| Children | Small bodies overheat faster than adults. Shade, hats and frequent drinks; skip midday sport. |
Next 24 hours
Hour-by-hour temperature, precipitation chance and wind.
See the Charleston County forecast by time range
Charleston County weather - more answers
Explore Charleston County
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Frequently asked questions
Where is Charleston County?
Charleston County is a county in South Carolina. Its coordinates are 32.7765, -79.9311. It lies in North America.
What is the weather like in Charleston County right now?
It is currently 85°F (30°C) with clear sky. Humidity is 73% and wind is 11 mph.
When is the best time to visit Charleston County?
March, April, June, September and November offer the most comfortable conditions in Charleston County, which has a temperate climate. January, August and December are usually the hardest months for outdoor plans.
What time zone is Charleston County in?
Charleston County observes America/New_York (UTC-04:00). The local time is 10:53 AM.
How many people live in Charleston County?
Charleston County has a population of approximately 410.000.
What is the nearest airport to Charleston County?
The closest airports are Hartsfield-Jackson Atlanta International Airport (ATL), 267 mi away.
What are the top things to do in Charleston County?
Popular options include Hunting Island State Park, Congaree National Park, Myrtle Beach and Chimney Rock State Park.
Related articles
Data sources and methodology
| Place data | USPOTUS Atlas dataset (us-counties) - coordinates, hierarchy and facts. |
|---|---|
| Forecast and observations | Open-Meteo (ECMWF and national models). |
| Air quality and pollen | Copernicus CAMS via Open-Meteo. US AQI scale. |
| Climate averages | ERA5 reanalysis via the Open-Meteo archive, aggregated over 3 years. |
| Official alerts | US National Weather Service. |
| Method | Scores, comparisons and advice on this page are computed from the inputs above. Distances are straight-line. Nothing is estimated where data is missing - the block is simply not shown. |
Last updated August 22, 2026 at 10:53 AM local time. Live blocks refresh every 15 minutes; climate averages monthly.
