Marine Weather Net

Charleston, SC Weather Forecast


Marine Forecast: Charleston Harbor


Charleston, South Carolina

 Lat: 32.78N, Lon: 79.94W

Current Conditions Updated: 1256 PM EST MON DEC 15 2025

Clear


Temp: 35°F
  • Humidity:
  • 23%
  • Winds:
  • N/A MPH N/A
  • Gusts:
  • N/A MPH
  • Barometer:
  • 30.46 in.
  • Dewpoint:
  • 1°F
  • Heat index:
  • N/A

  • Sunrise:
  • 7:13 AM EST
  • Sunset:
  • 5:13 PM EST
  • Moonrise:
  • 3:20 AM EST
  • Moonset:
  • 2:07 PM EST

TODAY

SUNNY

Hi: 40°F
Lo: 21°F

TUESDAY

SUNNY

Hi: 55°F
Lo: 31°F

WEDNESDAY

PARTLY SUNNY
Hi: 61°F
Lo: 41°F

THURSDAY

PARTLY SUNNY
Hi: 69°F
Lo: 51°F
Precip: 20%
Weather Forecast In Detail:
Forecast Issued: 648 AM EST Mon Dec 15 2025

COLD WEATHER ADVISORY IN EFFECT UNTIL 10 AM EST THIS MORNING
Today...Sunny. Much cooler with highs around 40. Wind chill values as low as 10 above this morning. Northeast winds 5 to 10 mph.
Tonight...Mostly clear. Lows in the lower 20s. Light and variable winds.
Tuesday...Sunny. Highs in the mid 50s. West winds around 5 mph.
Tuesday Night...Mostly clear. Lows in the lower 30s. Light and variable winds.
Wednesday...Partly sunny in the morning, then becoming mostly cloudy. Highs in the lower 60s. West winds around 5 mph.
Wednesday Night...Mostly cloudy. Lows in the lower 40s.
Thursday...Partly sunny with a 20 percent chance of showers. Highs in the upper 60s.
Thursday Night...Mostly cloudy with a 40 percent chance of showers. Lows in the lower 50s.
Friday...Sunny. Highs in the lower 60s.
Friday Night...Mostly clear. Cooler with lows in the mid 30s.
Saturday...Sunny. Highs in the lower 60s.
Saturday Night...Partly cloudy. Lows in the mid 40s.
Sunday...Mostly sunny. Highs in the lower 70s.
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