Charleston Weather Forecast
Charleston weather: 71°F, fog. Hourly forecast, 14-day outlook, UV, air quality and the best time to visit.
Summary
Charleston is a city in South Carolina. Charleston is known for Antebellum architecture and low country food. It has a population of about 150.000.
Right now it is 71°F (22°C) in Charleston with fog. It feels like 78°F. Today runs from 70°F to 91°F. Chance of precipitation is 6%. Sightseeing conditions score 9.7/10 - excellent - go now.
The best time to visit Charleston is March, April, June, September and November. The climate is temperate. January, August and December tend to be the least comfortable months. July is the warmest month with average highs near 89°F, while January is the coldest with lows near 40°F.
The closest major airport is Hartsfield-Jackson Atlanta International Airport (ATL), about 267 mi away. Nearby highlights include Hunting Island State Park, Congaree National Park, Myrtle Beach and Chimney Rock State Park.
In plain terms. Today is warmer than average for September. The forecast high of 91°F is 8.5°F above the 82°F typical for this month. The best window to be outside is roughly 7 AM to 10 AM, when temperature, rain chance and wind line up best. sightseeing is the strongest bet in Charleston today at 9.7/10. No weather-related travel disruption is expected today. Roads and airports should run normally.
Compiled from this page's own data: atlas facts plus live Open-Meteo readings.
Weather in Charleston right now
Source: Open-Meteo. Updated 3:20 AM, Sep 18 local time.
See the Charleston forecast by time range
Next 24 hours
Hour-by-hour temperature, precipitation chance and wind.
16-day forecast for Charleston
Daily highs and lows, precipitation and UV.
| Day | Conditions | High / Low | Precip | Wind | UV |
|---|---|---|---|---|---|
| Fri, Sep 18 | 🌥️ Fog | 91° / 70° | 6% | 8 mph | 7 |
| Sat, Sep 19 | 🌦️ Drizzle | 87° / 73° | 37% · 0,1 in | 10 mph | 7 |
| Sun, Sep 20 | ⛈️ Thunderstorm | 85° / 74° | 37% · 0,2 in | 9 mph | 7 |
| Mon, Sep 21 | 🌧️ Heavy drizzle | 85° / 74° | 21% · 0,1 in | 9 mph | 7 |
| Tue, Sep 22 | ⛈️ Thunderstorm | 84° / 74° | 53% · 0,1 in | 9 mph | 6 |
| Wed, Sep 23 | 🌦️ Light drizzle | 85° / 76° | 27% · 0,0 in | 12 mph | 7 |
| Thu, Sep 24 | 🌦️ Light drizzle | 83° / 70° | 24% · 0,0 in | 10 mph | 6 |
| Fri, Sep 25 | 🌧️ Heavy drizzle | 79° / 71° | 26% · 0,3 in | 11 mph | 4 |
| Sat, Sep 26 | 🌦️ Light drizzle | 78° / 66° | 17% · 0,0 in | 17 mph | 6 |
| Sun, Sep 27 | ☁️ Overcast | 80° / 63° | 12% | 15 mph | 7 |
| Mon, Sep 28 | ☁️ Overcast | 80° / 63° | 12% | 12 mph | 7 |
| Tue, Sep 29 | ⛅ Partly cloudy | 79° / 65° | 32% | 10 mph | 7 |
| Wed, Sep 30 | ☁️ Overcast | 79° / 70° | 35% | 10 mph | 6 |
| Thu, Oct 1 | 🌦️ Light drizzle | 79° / 73° | 27% · 0,0 in | 14 mph | 6 |
| Fri, Oct 2 | 🌦️ Light drizzle | 75° / 69° | 30% · 0,1 in | 11 mph | 2 |
| Sat, Oct 3 | ☀️ Clear sky | -- / -- | 26% | -- | — |
Climate in Charleston month by month
Average high, average low and total rainfall, based on three years of reanalysis data.
| Month | Avg high | Avg low | Rainfall | Rating |
|---|---|---|---|---|
| January | 56° | 40° | 3,1 in | ★★★☆☆ |
| February | 61° | 46° | 3,3 in | ★★★☆☆ |
| March | 69° | 53° | 3,3 in | ★★★★☆ |
| April | 75° | 60° | 2,2 in | ★★★★☆ |
| May | 81° | 68° | 4,5 in | ★★★★☆ |
| June | 86° | 74° | 4,1 in | ★★★★☆ |
| July | 89° | 78° | 5,0 in | ★★★☆☆ |
| August | 86° | 76° | 6,9 in | ★★★☆☆ |
| September | 82° | 70° | 3,4 in | ★★★★☆ |
| October | 75° | 61° | 4,1 in | ★★★★☆ |
| November | 68° | 54° | 1,9 in | ★★★★☆ |
| December | 60° | 46° | 4,7 in | ★★★☆☆ |
Climate type: Temperate. Source: Open-Meteo archive (ERA5).
Weather map for Charleston
Animated model layers. Pick a layer to load it.
Animated layers by Windy. For pin-level detail and nearby places, see the interactive map below.
Air quality and pollen in Charleston
Air quality: Open-Meteo (CAMS). US AQI scale.
Sun, twilight and moon
Golden and blue hour are the standard photographic approximation around sunrise and sunset.
Best time to visit Charleston
Go in March, April, June, September and November. These months score highest on comfortable temperatures, low rainfall and useful daylight.
Hardest months: January, August and December - expect the least comfortable mix of heat, cold or rain.
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 71°F (22°C) with fog. Humidity is 96% and wind is 3 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 3:20 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 September 18, 2026 at 3:20 AM local time. Live blocks refresh every 15 minutes; climate averages monthly.
