Marine Weather Net

Sullivans Island, SC Weather Forecast




Sullivans Island, South Carolina

 Lat: 32.76N, Lon: 79.84W

Current Conditions Updated: 956 PM EDT THU JUL 10 2025

Overcast
Temp: 74°F
  • Humidity:
  • 87%
  • Winds:
  • 3 MPH WSW
  • Gusts:
  • N/A MPH
  • Barometer:
  • 30.03 in.
  • Dewpoint:
  • 70°F
  • Heat index:
  • 74°F

  • Sunrise:
  • 6:17 AM EDT
  • Sunset:
  • 8:28 PM EDT
  • Moonrise:
  • 8:51 PM EDT
  • Moonset:
  • 5:45 AM EDT

TONIGHT

CHANCE OF SHOWERS
Lo: 75°F
Precip: 50%

FRIDAY

MOSTLY SUNNY
Hi: 91°F
Lo: 75°F
Precip: 50%

SATURDAY

MOSTLY SUNNY
Hi: 91°F
Lo: 75°F
Precip: 50%

SUNDAY

MOSTLY SUNNY
Hi: 91°F
Lo: 79°F
Precip: 50%
Weather Forecast In Detail:
Forecast Issued: 955 PM EDT Thu Jul 10 2025

Tonight...Mostly cloudy. A chance of showers and thunderstorms this evening, then a chance of showers with a slight chance of thunderstorms after midnight. Lows in the mid 70s. Southwest winds 10 to 15 mph. Chance of rain 50 percent.
Friday...Mostly sunny. A slight chance of showers and thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon. Highs in the lower 90s. Southwest winds 10 to 15 mph. Chance of rain 50 percent.
Friday Night...Mostly cloudy with a chance of showers and thunderstorms. Lows in the mid 70s. Southwest winds 5 to 10 mph. Chance of rain 50 percent.
Saturday...Mostly sunny. A slight chance of showers and thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon. Highs in the lower 90s. Southwest winds 5 to 10 mph. Chance of rain 50 percent. Heat index values up to 105.
Saturday Night...Mostly cloudy in the evening, then becoming partly cloudy. A chance of showers and thunderstorms. Lows in the mid 70s. Southwest winds 5 to 10 mph. Chance of rain 50 percent.
Sunday...Mostly sunny with a chance of showers and thunderstorms. Highs in the lower 90s. Chance of rain 50 percent. Heat index values up to 105.
Sunday Night...Partly cloudy with a slight chance of showers and thunderstorms. Lows in the upper 70s. Chance of rain 20 percent.
Monday...Mostly sunny with a chance of showers and thunderstorms. Highs in the lower 90s. Chance of rain 50 percent. Heat index values up to 105.
Monday Night...Mostly cloudy with a chance of showers and thunderstorms. Lows in the mid 70s. Chance of rain 50 percent.
Tuesday...Showers and thunderstorms likely. Highs in the upper 80s. Chance of rain 70 percent.
Tuesday Night...Mostly cloudy with a chance of showers and thunderstorms. Lows in the mid 70s. Chance of rain 50 percent.
Wednesday...Showers and thunderstorms likely. Highs in the mid 80s. Chance of rain 70 percent.
Wednesday Night...Mostly cloudy with a chance of showers and thunderstorms. Lows in the mid 70s. Chance of rain 50 percent.
Thursday...Showers likely with a chance of thunderstorms. Highs in the upper 80s. Chance of rain 70 percent.
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