Marine Weather Net

Johns Island, SC Weather Forecast




Johns Island, South Carolina

 Lat: 32.72N, Lon: 80.06W

Current Conditions Updated: 856 PM EDT WED APR 8 2026

Partly Cloudy
Temp: 57°F
  • Humidity:
  • 30%
  • Winds:
  • 13 MPH ENE
  • Gusts:
  • N/A MPH
  • Barometer:
  • 30.38 in.
  • Dewpoint:
  • 26°F
  • Heat index:
  • 57°F

  • Sunrise:
  • 6:58 AM EDT
  • Sunset:
  • 7:44 PM EDT
  • Moonrise:
  • 1:21 AM EDT
  • Moonset:
  • 10:58 AM EDT

TONIGHT

PARTLY CLOUDY
Lo: 49°F

THURSDAY

MOSTLY SUNNY
Hi: 71°F
Lo: 55°F

FRIDAY

SUNNY

Lo: 55°F

SATURDAY

MOSTLY SUNNY
Hi: 80°F
Lo: 59°F
Weather Forecast In Detail:
Forecast Issued: 537 PM EDT Wed Apr 08 2026

HIGH SURF ADVISORY IN EFFECT UNTIL 8 PM EDT THURSDAY ...HIGH RISK FOR RIP CURRENTS IN EFFECT THROUGH THURSDAY EVENING...
Tonight...Partly cloudy. Lows in the upper 40s. Northeast winds 15 to 20 mph. Gusts up to 35 mph this evening.
Thursday...Mostly sunny. Highs in the lower 70s. Northeast winds 10 to 15 mph with gusts up to 30 mph.
Thursday Night...Mostly clear. Lows in the mid 50s. Northeast winds 10 to 15 mph with gusts up to 25 mph.
Friday...Sunny. Highs in the upper 70s, except in the lower 70s near the coast. Northeast winds 5 to 10 mph with gusts up to 20 mph.
Friday Night...Mostly clear. Lows in the mid 50s. East winds 5 to 10 mph in the evening, becoming light and variable.
Saturday...Mostly sunny. Highs around 80.
Saturday Night...Clear. Lows in the upper 50s.
Sunday...Sunny. Highs in the upper 70s.
Sunday Night...Mostly clear. Lows in the lower 60s.
Monday...Mostly sunny. Highs in the upper 70s.
Monday Night...Mostly cloudy. Lows in the lower 60s.
Tuesday...Sunny. Highs in the lower 80s.
Tuesday Night...Partly cloudy. Lows in the lower 60s.
Wednesday...Sunny. Highs in the lower 80s.
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