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Charleston Harbor Marine Forecast

Updated 5:03am EDT Apr 16, 2026
Zone Map
Today
SW winds 5 to 10 kt, becoming S 10 to 15 kt with gusts to 20 kt this afternoon.
Tonight
SW winds 10 to 15 kt.
Fri
SW winds 5 to 10 kt.
Fri Night
SW winds 5 to 10 kt.
Sat
SW winds 5 to 10 kt.
Sat Night
S winds 10 kt.
Sun
W winds 10 to 15 kt.
Sun Night
N winds 10 to 15 kt, increasing to 15 to 20 kt. Waves building 1 to 2 ft.
Mon
NE winds 10 to 15 kt.
Mon Night
NE winds 5 to 10 kt.