Marine Weather Net

Charleston, SC Weather Forecast


Marine Forecast: Charleston Harbor


Charleston, South Carolina

 Lat: 32.78N, Lon: 79.94W

Current Conditions Updated: 1156 PM EDT SUN JUL 5 2026

Mostly Cloudy
Temp: 80°F
  • Humidity:
  • 87%
  • Winds:
  • 6 MPH SSW
  • Gusts:
  • N/A MPH
  • Barometer:
  • 29.95 in.
  • Dewpoint:
  • 76°F
  • Heat index:
  • 85°F

  • Sunrise:
  • 6:16 AM EDT
  • Sunset:
  • 8:30 PM EDT
  • Moonrise:
  • 12:31 AM EDT
  • Moonset:
  • 12:25 PM EDT

TONIGHT

CHANCE OF T-STORM
Lo: 77°F
Precip: 50%

MONDAY

MOSTLY SUNNY
Hi: 95°F
Lo: 79°F
Precip: 40%

TUESDAY

MOSTLY SUNNY
Hi: 95°F
Lo: 77°F
Precip: 40%

WEDNESDAY

MOSTLY SUNNY
Hi: 99°F
Lo: 79°F
Weather Forecast In Detail:
Forecast Issued: 627 PM EDT Sun Jul 05 2026

Tonight...Partly cloudy with a chance of showers and thunderstorms this evening, then mostly clear after midnight. Lows in the upper 70s. South winds around 5 mph. Chance of rain 50 percent.
Monday...Mostly sunny. A chance of showers and thunderstorms in the afternoon. Highs in the mid 90s. Heat index values up to 105. Southwest winds 5 to 10 mph. Chance of rain 40 percent.
Monday Night...Partly cloudy. A chance of showers and thunderstorms, mainly in the evening. Lows in the upper 70s. South winds 5 to 10 mph. Chance of rain 40 percent.
Tuesday...Mostly sunny. A chance of showers and thunderstorms in the afternoon. Highs in the mid 90s. Southwest winds 5 to 10 mph. Chance of rain 40 percent. Heat index values up to 106.
Tuesday Night...Partly cloudy. A chance of showers and thunderstorms in the evening, then a slight chance of showers after midnight. Lows in the upper 70s. Southwest winds 5 to 10 mph. Chance of rain 40 percent.
Wednesday...Mostly sunny. Highs in the upper 90s. Heat index values up to 105.
Wednesday Night...Partly cloudy. Lows in the upper 70s.
Thursday...Sunny with a slight chance of showers and thunderstorms. Highs in the upper 90s. Chance of rain 20 percent. Heat index values up to 105.
Thursday Night...Mostly clear. Lows in the upper 70s. Heat index values up to 105 early in the evening.
Friday...Sunny with a slight chance of showers and thunderstorms. Highs in the upper 90s. Chance of rain 20 percent. Heat index values up to 105.
Friday Night...Partly cloudy with a slight chance of showers and thunderstorms. Lows in the upper 70s. Chance of rain 20 percent.
Saturday...Sunny with a chance of showers and thunderstorms. Highs in the upper 90s. Chance of rain 30 percent. Heat index values up to 105.
Saturday Night...Partly cloudy with a chance of showers and thunderstorms. Lows in the upper 70s. Chance of rain 30 percent. Heat index values up to 105 early in the evening.
Sunday...Mostly sunny with a chance of showers and thunderstorms. Highs in the mid 90s. Chance of rain 50 percent.
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