Marine Weather Net

Charleston, SC Weather Forecast


Marine Forecast: Charleston Harbor


Charleston, South Carolina

 Lat: 32.78N, Lon: 79.94W

Current Conditions Updated: 356 PM EDT TUE MAY 26 2026

Mostly Cloudy
Temp: 86°F
  • Humidity:
  • 63%
  • Winds:
  • 17 MPH S
  • Gusts:
  • 28 MPH
  • Barometer:
  • 30.07 in.
  • Dewpoint:
  • 72°F
  • Heat index:
  • 92°F

  • Sunrise:
  • 6:13 AM EDT
  • Sunset:
  • 8:17 PM EDT
  • Moonrise:
  • 4:18 PM EDT
  • Moonset:
  • 3:16 AM EDT

THIS AFTERNOON

PARTLY SUNNY
Hi: 90°F
Lo: 71°F
Precip: 50%

WEDNESDAY

PARTLY SUNNY
Hi: 89°F
Lo: 69°F
Precip: 50%

THURSDAY

MOSTLY SUNNY
Hi: 91°F
Lo: 69°F
Precip: 50%

FRIDAY

CHANCE OF T-STORM
Hi: 85°F
Lo: 65°F
Precip: 70%
Weather Forecast In Detail:
Forecast Issued: 217 PM EDT Tue May 26 2026

This Afternoon...Partly sunny with a chance of showers and thunderstorms. Highs around 90. South winds 5 to 10 mph with gusts up to 20 mph. Chance of rain 50 percent.
Tonight...Mostly cloudy. A slight chance of showers and thunderstorms in the evening. Lows in the lower 70s. South winds 5 to 10 mph. Chance of rain 20 percent.
Wednesday...Partly sunny in the morning, then mostly cloudy with a chance of showers and thunderstorms in the afternoon. Highs in the upper 80s. Southwest winds 5 to 10 mph. Chance of rain 50 percent.
Wednesday Night...Mostly cloudy. A slight chance of showers and thunderstorms in the evening. Lows in the upper 60s. Southwest winds around 5 mph. Chance of rain 20 percent.
Thursday...Mostly sunny. A chance of showers and thunderstorms in the afternoon. Highs in the lower 90s. West winds 5 to 10 mph. Chance of rain 50 percent.
Thursday Night...Showers with a chance of thunderstorms. Lows in the upper 60s. Chance of rain 80 percent.
Friday...Showers likely with a chance of thunderstorms. Highs in the mid 80s. Chance of rain 70 percent.
Friday Night...Showers likely with a chance of thunderstorms. Lows in the mid 60s. Chance of rain 70 percent.
Saturday...Showers with a chance of thunderstorms. Highs in the lower 80s. Chance of rain 80 percent.
Saturday Night...Showers likely with a slight chance of thunderstorms. Lows in the lower 60s. Chance of rain 70 percent.
Sunday...Showers likely with a slight chance of thunderstorms. Highs in the lower 80s. Chance of rain 70 percent.
Sunday Night...Mostly cloudy with a 50 percent chance of showers. Lows in the lower 60s.
Monday...Partly sunny with a chance of showers and thunderstorms. Highs in the lower 80s. Chance of rain 50 percent.
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