Marine Weather Net

Charleston, SC Weather Forecast


Marine Forecast: Charleston Harbor


Charleston, South Carolina

 Lat: 32.78N, Lon: 79.94W

Current Conditions Updated: 756 PM EDT TUE JUN 23 2026

Mostly Clear
Temp: 89°F
  • Humidity:
  • 49%
  • Winds:
  • 9 MPH W
  • Gusts:
  • N/A MPH
  • Barometer:
  • 29.94 in.
  • Dewpoint:
  • 68°F
  • Heat index:
  • 93°F

  • Sunrise:
  • 6:11 AM EDT
  • Sunset:
  • 8:30 PM EDT
  • Moonrise:
  • 3:10 PM EDT
  • Moonset:
  • 1:45 AM EDT

TONIGHT

MOSTLY CLEAR
Lo: 71°F

WEDNESDAY

SUNNY

Hi: 91°F
Lo: 69°F

THURSDAY

MOSTLY SUNNY
Hi: 91°F
Lo: 71°F

FRIDAY

MOSTLY SUNNY
Hi: 95°F
Lo: 75°F
Precip: 20%
Weather Forecast In Detail:
Forecast Issued: 737 PM EDT Tue Jun 23 2026

Tonight...Mostly clear. Lows in the lower 70s. West winds 10 to 15 mph with gusts up to 25 mph, becoming north around 5 mph after midnight.
Wednesday...Sunny. Highs in the lower 90s. Northeast winds around 5 mph.
Wednesday Night...Partly cloudy in the evening, then clearing. Lows in the upper 60s. Southeast winds around 5 mph in the evening, becoming light and variable.
Thursday...Mostly sunny. Highs in the lower 90s. Southeast winds around 5 mph.
Thursday Night...Partly cloudy in the evening, then becoming mostly clear. Lows in the lower 70s. Southeast winds around 5 mph in the evening, becoming light and variable.
Friday...Mostly sunny with a slight chance of showers and thunderstorms. Highs in the mid 90s. Chance of rain 20 percent.
Friday Night...Partly cloudy with a slight chance of showers and thunderstorms. Lows in the mid 70s. Chance of rain 20 percent.
Saturday...Sunny. Highs in the mid 90s. Heat index values up to 105.
Saturday Night...Mostly clear. Lows in the mid 70s.
Sunday...Sunny with a slight chance of showers and thunderstorms. Highs in the upper 90s. Chance of rain 20 percent. Heat index values up to 110.
Sunday Night...Partly cloudy with a chance of showers and thunderstorms. Lows in the mid 70s. Chance of rain 30 percent. Heat index values up to 105 early in the evening.
Monday...Mostly sunny with a chance of showers and thunderstorms. Highs in the mid 90s. Chance of rain 40 percent. Heat index values up to 105.
Monday Night...Partly cloudy with a slight chance of showers and thunderstorms. Lows in the lower 70s. Chance of rain 20 percent.
Tuesday...Sunny with a slight chance of showers and thunderstorms. Highs in the mid 90s. Chance of rain 20 percent.
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