Charleston Weather Forecast
Charleston weather: 80°F, clear. Hourly forecast, 14-day outlook, UV, air quality and the best time to visit.
Risk assessment for Charleston
Derived from the current forecast window - not an official warning.
Peak gusts of 30 mph and 4 thunderstorm days in the next 16 days.
Wettest single day forecast at 0,2 in, 1,3 in across the window. Flash flooding risk rises sharply above 50 mm in a day.
16-day forecast for Charleston
Daily highs and lows, precipitation and UV.
| Day | Conditions | High / Low | Precip | Wind | UV |
|---|---|---|---|---|---|
| Sun, Aug 23 | 🌦️ Light drizzle | 88° / 74° | 45% · 0,0 in | 12 mph | 8 |
| Mon, Aug 24 | 🌦️ Light showers | 89° / 77° | 17% · 0,1 in | 14 mph | 8 |
| Tue, Aug 25 | ☁️ Overcast | 87° / 76° | 51% · 0,0 in | 10 mph | 8 |
| Wed, Aug 26 | ☁️ Overcast | 89° / 74° | 51% | 11 mph | 8 |
| Thu, Aug 27 | 🌦️ Light drizzle | 91° / 79° | 39% · 0,0 in | 17 mph | 8 |
| Fri, Aug 28 | 🌦️ Light showers | 90° / 77° | 51% · 0,1 in | 14 mph | 8 |
| Sat, Aug 29 | 🌦️ Light drizzle | 90° / 79° | 45% · 0,1 in | 12 mph | 8 |
| Sun, Aug 30 | ⛈️ Thunderstorm with hail | 89° / 78° | 30% · 0,2 in | 11 mph | 8 |
| Mon, Aug 31 | ⛈️ Thunderstorm | 91° / 77° | 15% · 0,1 in | 13 mph | 8 |
| Tue, Sep 1 | 🌦️ Light drizzle | 91° / 74° | 17% · 0,0 in | 9 mph | 7 |
| Wed, Sep 2 | 🌦️ Light drizzle | 96° / 79° | 21% · 0,0 in | 15 mph | 7 |
| Thu, Sep 3 | 🌦️ Light drizzle | 99° / 81° | 35% · 0,0 in | 14 mph | 8 |
| Fri, Sep 4 | ⛈️ Thunderstorm | 93° / 78° | 35% · 0,2 in | 12 mph | 7 |
| Sat, Sep 5 | ⛈️ Thunderstorm | 86° / 77° | 29% · 0,1 in | 12 mph | 7 |
| Sun, Sep 6 | 🌦️ Drizzle | 88° / 77° | 32% · 0,2 in | 11 mph | 7 |
| Mon, Sep 7 | 🌦️ Drizzle | 87° / 78° | 39% · 0,1 in | 11 mph | 6 |
What this means for Charleston
Today is about average for August. The forecast high of 88°F is in line with the 86°F typical for this month.
A 45% chance means rain is likely somewhere nearby at some point - carry a layer, but do not cancel.
No weather-related travel disruption is expected today. Roads and airports should run normally.
Northern Hemisphere, so peak summer falls in June to August.
The gap between the warmest and coldest month averages 67°F.
See the Charleston forecast by time range
Charleston weather - more answers
Explore Charleston
Every topic we hold for this place, and the same topic for the places around it.
Weather for related places
Frequently asked questions
Where is Charleston?
Charleston is a city in South Carolina. Its coordinates are 32.7765, -79.9311. It lies in North America.
What is the weather like in Charleston right now?
It is currently 80°F (27°C) with clear. Humidity is 88% and wind is 6 mph.
When is the best time to visit Charleston?
March, April, June, September and November offer the most comfortable conditions in Charleston, which has a temperate climate. January, August and December are usually the hardest months for outdoor plans.
What time zone is Charleston in?
Charleston observes America/New_York (UTC-04:00). The local time is 3:13 AM.
How many people live in Charleston?
Charleston has a population of approximately 150.000.
What is the nearest airport to Charleston?
The closest airports are Hartsfield-Jackson Atlanta International Airport (ATL), 267 mi away.
What are the top things to do in Charleston?
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 (cities-us) - 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 24, 2026 at 3:13 AM local time. Live blocks refresh every 15 minutes; climate averages monthly.
