Currently

75°

Feels Like 76°

Cloudy

Wind North at 11 mph
Pressure 30.06 in.
Dewpoint 68°F
Humidity 78%

last updated at 4:50 PM on September 23, 2026

Weather Alerts

Issued by the National Weather Service, last updated at 5:08 PM on September 23, 2026

- Coastal Colleton; Charleston
- 8:00 PM on September 23, 2026
- * WHAT...For the Coastal Flood Advisory, up to one half foot of inundation above ground level expected along shorelines and tidal waterways (7.0 to 7.2 feet Mean Lower Low Water at Charleston). For the High Rip Current Risk, dangerous rip currents expected. * WHERE...Coastal Colleton and Charleston Counties. * WHEN...For the Coastal Flood Advisory, from 5 PM this afternoon to 8 PM EDT this evening. For the High Rip Current Risk, from Thursday morning through Thursday evening. * IMPACTS...This will result in some roads becoming impassable and minor flooding of properties. Rip currents can sweep even the best swimmers away from shore into deeper water. * ADDITIONAL DETAILS...High tide will occur around 6:29 PM today at Charleston. Saltwater inundation will be possible 1 to 2 hours before and after high tide.
- If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property. Visit water.weather.gov for additional water level and flood impact information. Swim near a lifeguard. If caught in a rip current, relax and float. Don't swim against the current. If able, swim in a direction following the shoreline. If unable to escape, face the shore and call or wave for help.
- Coastal Colleton; Charleston
- 8:00 AM on September 24, 2026
- 8:00 PM on September 24, 2026
- * WHAT...For the Coastal Flood Advisory, up to one half foot of inundation above ground level expected along shorelines and tidal waterways (7.0 to 7.2 feet Mean Lower Low Water at Charleston). For the High Rip Current Risk, dangerous rip currents expected. * WHERE...Coastal Colleton and Charleston Counties. * WHEN...For the Coastal Flood Advisory, from 5 PM this afternoon to 8 PM EDT this evening. For the High Rip Current Risk, from Thursday morning through Thursday evening. * IMPACTS...This will result in some roads becoming impassable and minor flooding of properties. Rip currents can sweep even the best swimmers away from shore into deeper water. * ADDITIONAL DETAILS...High tide will occur around 6:29 PM today at Charleston. Saltwater inundation will be possible 1 to 2 hours before and after high tide.
- If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property. Visit water.weather.gov for additional water level and flood impact information. Swim near a lifeguard. If caught in a rip current, relax and float. Don't swim against the current. If able, swim in a direction following the shoreline. If unable to escape, face the shore and call or wave for help.

Charleston Area NWS Forecast

Forecast for Charleston updated at 2:13 PM on September 23, 2026

This Afternoon Mostly cloudy. Highs in the upper 70s. North winds 10 to 15 mph with gusts up to 25 mph.
Tonight Mostly cloudy. Lows in the upper 60s. North winds 10 to 15 mph with gusts up to 25 mph.
Thursday Partly sunny with a slight chance of showers and thunderstorms. Highs in the mid 70s. North winds 15 to 20 mph with gusts up to 30 mph. Chance of rain 20 percent.
Thursday Night Partly cloudy. A slight chance of showers and thunderstorms in the evening. Lows around 60. North winds 15 to 20 mph with gusts up to 30 mph. Chance of rain 20 percent.
Friday Sunny. Highs in the mid 70s. North winds 10 to 15 mph with gusts up to 25 mph.
Friday Night Clear. Lows in the upper 50s.
Saturday Sunny. Highs in the upper 70s.
Saturday Night Mostly clear. Lows in the upper 50s.
Sunday Mostly sunny. Highs in the lower 80s.
Sunday Night Partly cloudy. Lows in the lower 60s.
Monday Sunny. Highs in the lower 80s.
Monday Night Mostly clear. Lows in the mid 60s.
Tuesday Mostly sunny. Highs in the mid 80s.

More from the Blog

Weather tidbits and other useful info

Rest of the work week: Turning cooler — and breezier

Jared Smith / September 22, 2026 at 8:48 PM

The first legitimate shot of cooler air of the season begins to build in on Wednesday as high pressure starts to wedge into the area from the north. It’ll bring with it some breezy conditions and an elevated risk of coastal flooding that will last into at least Friday.

Built and maintained by Jared Smith in West Ashley for the Charleston, SC metro area since 2008

Support Charleston Weather

Social Media

Always have multiple ways to receive weather warnings, including one that doesn't require the Internet (like a weather radio).
Always refer to official statements from the National Weather Service and local emergency management for life-and-death decision-making.
This site is provided as a best effort, but reliability cannot be guaranteed. Use at your own risk.