I-526 Bridge, SC Coastal Forecast

FZUS52 KCHS 151806
CWFCHS

Coastal Waters Forecast
National Weather Service Charleston SC
106 PM EST Mon Dec 15 2025

South Santee River SC to Savannah GA out 20 NM and Savannah GA to
Altamaha Sound GA out 60 NM, including Charleston Harbor and
Grays Reef National Marine Sanctuary

AMZ300-160715-
106 PM EST Mon Dec 15 2025

.Synopsis for the coastal waters of south coastal South Carolina
and north coastal Georgia...
Cold conditions will continue into Tuesday. High pressure will
prevail through Thursday before a cold front pushes offshore
Friday.

$$

AMZ330-160715-
Charleston Harbor-
106 PM EST Mon Dec 15 2025

.THIS AFTERNOON...NE winds 5 to 10 kt.
.TONIGHT...N winds 5 kt.
.TUE...N winds 5 kt, becoming SW in the afternoon.
.TUE NIGHT...S winds 5 kt in the evening, becoming light and
variable.
.WED...NW winds 5 kt.
.WED NIGHT...Light and variable winds, becoming NE 5 kt after
midnight. A slight chance of rain after midnight.
.THU...SE winds 5 kt. Rain likely with a slight chance of tstms.
.THU NIGHT...SW winds 5 to 10 kt. A chance of rain.
.FRI...W winds 10 kt.
.FRI NIGHT...N winds 5 kt.

Winds and waves higher in and near tstms.

Unless otherwise noted, waves 1 foot or less.

Charleston Harbor water temperature 53 degrees.

$$

AMZ350-160715-
Waters from South Santee River to Edisto Beach SC out 20 NM-
106 PM EST Mon Dec 15 2025

.THIS AFTERNOON...NE winds 10 to 15 kt. Seas 4 to 5 ft. Wave
Detail: NE 5 ft at 9 seconds.
.TONIGHT...N winds 5 to 10 kt. Seas 4 to 5 ft, subsiding to 3 to
4 ft after midnight. Wave Detail: E 5 ft at 9 seconds, becoming E
4 ft at 10 seconds.
.TUE...N winds 5 to 10 kt, becoming NW in the afternoon. Seas
3 to 4 ft, subsiding to 2 to 3 ft in the afternoon. Wave Detail:
E 3 ft at 10 seconds, becoming E 3 ft at 9 seconds and SE 2 ft at
10 seconds.
.TUE NIGHT...SW winds 5 kt, becoming W after midnight. Seas 2 to
3 ft. Wave Detail: E 2 ft at 10 seconds.
.WED...NW winds 5 kt. Seas 2 to 3 ft. Wave Detail: E 2 ft at
8 seconds and SE 2 ft at 10 seconds.
.WED NIGHT...E winds 5 kt. Seas 2 to 3 ft. Wave Detail: SE 2 ft
at 10 seconds. A slight chance of rain after midnight.
.THU...SE winds 5 to 10 kt. Seas 2 to 3 ft. Rain likely with a
slight chance of tstms.
.THU NIGHT...SW winds 15 to 20 kt. Seas 4 to 6 ft. Rain likely
with a slight chance of tstms.
.FRI...W winds 15 to 20 kt. Seas 4 to 6 ft.
.FRI NIGHT...N winds 10 kt. Seas 4 to 5 ft.

Winds and seas higher in and near tstms.

$$

AMZ352-160715-
Waters from Edisto Beach SC to Savannah GA out 20 NM-
106 PM EST Mon Dec 15 2025

.THIS AFTERNOON...NE winds 10 to 15 kt. Seas 4 to 5 ft. Wave
Detail: NE 5 ft at 9 seconds.
.TONIGHT...NE winds 5 to 10 kt. Seas 4 to 5 ft, subsiding to 3 to
4 ft after midnight. Wave Detail: E 4 ft at 9 seconds and SE 1
foot at 9 seconds.
.TUE...N winds 5 to 10 kt. Seas 3 to 4 ft, subsiding to 2 to 3 ft
in the afternoon. Wave Detail: E 3 ft at 9 seconds and SE 2 ft at
10 seconds.
.TUE NIGHT...SE winds 5 kt, becoming NE after midnight. Seas 2 to
3 ft. Wave Detail: E 2 ft at 8 seconds and SE 2 ft at 10 seconds.
.WED...N winds 5 kt. Seas 2 to 3 ft. Wave Detail: SE 2 ft at
10 seconds.
.WED NIGHT...E winds 5 kt. Seas 2 to 3 ft. Wave Detail: SE 2 ft
at 10 seconds. A chance of rain after midnight.
.THU...SE winds 5 kt. Seas 2 to 3 ft. Rain likely with a slight
chance of tstms.
.THU NIGHT...SW winds 10 to 15 kt. Seas 4 to 5 ft. Rain likely.
.FRI...W winds 10 to 15 kt. Seas 4 to 5 ft.
.FRI NIGHT...N winds 5 to 10 kt. Seas 3 to 4 ft.

Winds and seas higher in and near tstms.

$$

AMZ354-160715-
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including
Grays Reef National Marine Sanctuary-
106 PM EST Mon Dec 15 2025

.THIS AFTERNOON...NE winds 15 to 20 kt, diminishing to 10 to
15 kt late. Seas 4 to 5 ft. Wave Detail: NE 5 ft at 9 seconds.
.TONIGHT...NE winds 10 to 15 kt, becoming N 5 to 10 kt after
midnight. Seas 4 to 5 ft, subsiding to 3 to 4 ft after midnight.
Wave Detail: E 5 ft at 9 seconds, becoming E 4 ft at 9 seconds.
.TUE...N winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: E 4 ft at
9 seconds and SE 2 ft at 10 seconds.
.TUE NIGHT...NE winds 5 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft
at 8 seconds and SE 2 ft at 10 seconds.
.WED...N winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at
10 seconds.
.WED NIGHT...E winds 5 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at
10 seconds. A chance of rain after midnight.
.THU...SE winds 5 to 10 kt. Seas 2 to 3 ft. Rain likely.
.THU NIGHT...SW winds 10 to 15 kt. Seas 3 to 4 ft. A chance of
rain.
.FRI...W winds 10 to 15 kt. Seas 3 to 4 ft.
.FRI NIGHT...N winds 10 kt. Seas 3 to 4 ft.

$$

AMZ374-160715-
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM-
106 PM EST Mon Dec 15 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 AM EST TUESDAY...

.THIS AFTERNOON...NE winds 15 to 20 kt. Seas 6 to 8 ft. Wave
Detail: NE 8 ft at 9 seconds and SE 1 foot at 10 seconds.
.TONIGHT...NE winds 10 to 15 kt. Seas 5 to 7 ft, subsiding to
4 to 5 ft after midnight. Wave Detail: NE 7 ft at 9 seconds and
SE 2 ft at 10 seconds, becoming NE 5 ft at 9 seconds and SE 2 ft
at 10 seconds.
.TUE...N winds 5 to 10 kt. Seas 4 to 5 ft. Wave Detail: NE 5 ft
at 9 seconds and SE 2 ft at 10 seconds.
.TUE NIGHT...NE winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: E
4 ft at 9 seconds and SE 2 ft at 10 seconds.
.WED...NE winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: E 3 ft
at 8 seconds and SE 3 ft at 10 seconds. A slight chance of rain.
.WED NIGHT...E winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: SE
3 ft at 10 seconds and E 2 ft at 8 seconds. A slight chance of
rain in the evening, then a chance of rain with a slight chance
of tstms after midnight.
.THU...S winds 5 to 10 kt. Seas 3 to 4 ft. Rain likely with a
slight chance of tstms.
.THU NIGHT...SW winds 15 to 20 kt. Seas 4 to 6 ft. Rain likely
with a slight chance of tstms.
.FRI...W winds 15 to 20 kt. Seas 4 to 6 ft. A slight chance of
rain.
.FRI NIGHT...N winds 10 to 15 kt. Seas 4 to 5 ft.

Winds and seas higher in and near tstms.

$$