Marine Weather Net

Sullivans Island, SC Weather Forecast




Sullivans Island, South Carolina

 Lat: 32.76N, Lon: 79.84W

Current Conditions Updated: 1156 PM EST WED DEC 31 2025

Mostly Clear
Temp: 41°F
  • Humidity:
  • 48%
  • Winds:
  • 8 MPH WSW
  • Gusts:
  • N/A MPH
  • Barometer:
  • 30.02 in.
  • Dewpoint:
  • 23°F
  • Heat index:
  • 41°F

  • Sunrise:
  • 7:20 AM EST
  • Sunset:
  • 5:22 PM EST
  • Moonrise:
  • 3:27 PM EST
  • Moonset:
  • 5:38 AM EST

TONIGHT

MOSTLY CLEAR
Lo: 39°F

NEW YEARS DAY

SUNNY

Hi: 60°F
Lo: 41°F

FRIDAY

PARTLY SUNNY
Hi: 61°F
Lo: 50°F

SATURDAY

CHANCE OF T-STORM
Hi: 65°F
Lo: 45°F
Precip: 90%
Weather Forecast In Detail:
Forecast Issued: 437 PM EST Wed Dec 31 2025

Tonight...Mostly clear. Lows in the upper 30s. West winds 5 to 10 mph with gusts up to 30 mph.
New Years Day...Sunny. Highs around 60. West winds 5 to 10 mph. Gusts up to 30 mph in the morning.
Thursday Night...Mostly clear in the evening, then becoming partly cloudy. Lows in the lower 40s. West winds around 5 mph.
Friday...Partly sunny in the morning, then becoming mostly cloudy. Highs in the lower 60s. Southwest winds 5 to 10 mph.
Friday Night...Mostly cloudy. A chance of showers after midnight. Lows around 50. Southwest winds around 5 mph. Chance of rain 30 percent.
Saturday...Showers with a slight chance of thunderstorms. Highs in the mid 60s. Chance of rain 90 percent.
Saturday Night...Showers with a slight chance of thunderstorms. Lows in the mid 40s. Chance of rain 90 percent.
Sunday...Mostly sunny. Highs in the upper 50s.
Sunday Night...Partly cloudy. Lows around 40.
Monday...Mostly sunny. Highs in the upper 50s.
Monday Night...Partly cloudy. Lows in the lower 40s.
Tuesday...Mostly sunny. Highs in the lower 60s.
Tuesday Night...Partly cloudy. Lows in the upper 40s.
Wednesday...Partly sunny. Highs in the mid 60s.
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