Marine Weather Net

James Island, SC Weather Forecast


Marine Forecast: Charleston Harbor


James Island, South Carolina

 Lat: 32.73N, Lon: 79.93W

Current Conditions Updated: 456 PM EST THU DEC 11 2025

Mostly Clear
Temp: 51°F
  • Humidity:
  • 45%
  • Winds:
  • 7 MPH WNW
  • Gusts:
  • N/A MPH
  • Barometer:
  • 29.99 in.
  • Dewpoint:
  • 31°F
  • Heat index:
  • 51°F

  • Sunrise:
  • 7:10 AM EST
  • Sunset:
  • 5:12 PM EST
  • Moonrise:
  • N/A EST
  • Moonset:
  • 12:23 PM EST

THIS AFTERNOON

SUNNY

Hi: 51°F

FRIDAY

SUNNY

Hi: 60°F
Lo: 45°F

SATURDAY

SUNNY

Hi: 65°F
Lo: 50°F

SUNDAY

PARTLY SUNNY
Hi: 61°F
Lo: 21°F
Precip: 40%
Weather Forecast In Detail:
Forecast Issued: 1237 PM EST Thu Dec 11 2025

This Afternoon...Sunny. Highs in the lower 50s. Northwest winds 5 to 10 mph.
Tonight...Mostly clear. Lows in the mid 30s, except in the upper 30s near the coast. West winds around 5 mph.
Friday...Sunny. Highs around 60. Southwest winds 5 to 10 mph.
Friday Night...Mostly clear. Lows in the mid 40s. Southwest winds 5 to 10 mph.
Saturday...Sunny. Highs in the mid 60s. West winds around 5 mph.
Saturday Night...Partly cloudy. Lows around 50.
Sunday...Partly sunny with a 40 percent chance of showers. Highs in the lower 60s. Temperature falling into the lower 50s in the afternoon.
Sunday Night...Mostly clear. Much cooler with lows in the lower 20s. Wind chill values as low as 10 above after midnight.
Monday...Sunny. Much cooler with highs in the lower 40s. Wind chill values as low as 10 above in the morning.
Monday Night...Mostly clear. Lows in the upper 20s.
Tuesday...Sunny. Highs in the lower 50s.
Tuesday Night...Mostly clear. Lows in the upper 30s.
Wednesday...Mostly sunny. Highs in the lower 60s.
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