851
FZUS52 KCHS 031005
CWFCHS

Coastal Waters Forecast
National Weather Service Charleston SC
605 AM EDT Wed Sep 3 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

AMZ300-032230-
605 AM EDT Wed Sep 3 2025

.Synopsis for the coastal waters of south coastal South Carolina
and north coastal Georgia...
High pressure will extend across the area through late week. A
cold front will move through from the northwest late Sunday,
stalling just offshore through the middle of next week.

$$

AMZ330-032230-
Charleston Harbor-
605 AM EDT Wed Sep 3 2025

.TODAY...NE winds 10 to 15 kt, becoming E this afternoon
.TONIGHT...E winds 10 to 15 kt, becoming NE 5 kt after midnight.
.THU...NE winds 5 kt, becoming SE 10 to 15 kt in the afternoon.
.THU NIGHT...S winds 5 to 10 kt.
.FRI...SW winds 5 kt, becoming SE 10 to 15 kt in the afternoon.
.FRI NIGHT...S winds 5 to 10 kt.
.SAT...SE winds 10 to 15 kt.
.SAT NIGHT...S winds 5 to 10 kt.
.SUN...NE winds 10 to 15 kt. A slight chance of showers and
tstms.
.SUN NIGHT...E winds 10 kt. A chance of showers and tstms.

Winds and waves higher in and near tstms.

Unless otherwise noted, waves 1 foot or less.

Charleston Harbor water temperature 79 degrees.

$$

AMZ350-032230-
Waters from South Santee River to Edisto Beach SC out 20 NM-
605 AM EDT Wed Sep 3 2025

.TODAY...NE winds 10 to 15 kt with gusts to 20 kt. Seas 3 to
4 ft. Wave Detail: E 4 ft at 8 seconds.
.TONIGHT...E winds 5 to 10 kt, diminishing to 5 kt after
midnight. Seas 2 to 3 ft. Wave Detail: E 3 ft at 8 seconds.
.THU...E winds 5 kt, becoming SE in the afternoon. Seas 2 to
3 ft. Wave Detail: E 3 ft at 8 seconds.
.THU NIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E
2 ft at 8 seconds.
.FRI...S winds 5 to 10 kt. Seas 2 ft. Wave Detail: E 2 ft at
8 seconds.
.FRI NIGHT...S winds 5 to 10 kt. Seas 2 ft. Wave Detail: E 2 ft
at 8 seconds and SE 1 foot at 3 seconds.
.SAT...E winds 5 to 10 kt. Seas 2 ft.
.SAT NIGHT...S winds 5 to 10 kt. Seas 2 ft.
.SUN...NE winds 5 to 10 kt. Seas 2 ft. A slight chance of showers
and tstms.
.SUN NIGHT...E winds 10 to 15 kt. Seas 2 to 3 ft. A chance of
showers and tstms.

Winds and seas higher in and near tstms.

$$

AMZ352-032230-
Waters from Edisto Beach SC to Savannah GA out 20 NM-
605 AM EDT Wed Sep 3 2025

.TODAY...NE winds 10 to 15 kt with gusts to 20 kt this morning.
Seas 3 to 4 ft. Wave Detail: E 4 ft at 7 seconds.
.TONIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E
3 ft at 7 seconds.
.THU...E winds 5 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at
7 seconds.
.THU NIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E
2 ft at 8 seconds.
.FRI...S winds 5 kt, becoming SE in the afternoon. Seas 2 ft.
Wave Detail: E 2 ft at 8 seconds.
.FRI NIGHT...SE winds 5 to 10 kt. Seas 2 ft. Wave Detail: E 2 ft
at 8 seconds.
.SAT...E winds 5 to 10 kt. Seas 2 ft.
.SAT NIGHT...S winds 5 to 10 kt. Seas 2 ft.
.SUN...NE winds 5 to 10 kt. Seas 2 ft. A slight chance of showers
and tstms.
.SUN NIGHT...E winds 10 to 15 kt. Seas 2 ft. A chance of showers
and tstms.

Winds and seas higher in and near tstms.

$$

AMZ354-032230-
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including
Grays Reef National Marine Sanctuary-
605 AM EDT Wed Sep 3 2025

.TODAY...NE winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: E
4 ft at 7 seconds.
.TONIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E
3 ft at 7 seconds.
.THU...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at
7 seconds.
.THU NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E
3 ft at 8 seconds.
.FRI...S winds 5 kt, becoming E in the afternoon. Seas 2 ft. Wave
Detail: E 2 ft at 8 seconds.
.FRI NIGHT...SE winds 5 to 10 kt. Seas 2 ft. Wave Detail: E 2 ft
at 8 seconds.
.SAT...NE winds 5 to 10 kt. Seas 2 ft.
.SAT NIGHT...S winds 5 to 10 kt. Seas 2 ft.
.SUN...NE winds 5 to 10 kt. Seas 2 ft. A slight chance of showers
and tstms.
.SUN NIGHT...E winds 10 kt. Seas 2 ft. A chance of showers and
tstms.

Winds and seas higher in and near tstms.

$$

AMZ374-032230-
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM-
605 AM EDT Wed Sep 3 2025

.TODAY...NE winds 10 to 15 kt. Seas 4 to 5 ft. Wave Detail: NE
5 ft at 8 seconds.
.TONIGHT...E winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: NE
4 ft at 8 seconds.
.THU...E winds 5 kt. Seas 3 to 4 ft. Wave Detail: E 3 ft at
8 seconds and SE 1 foot at 8 seconds.
.THU NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E
3 ft at 8 seconds.
.FRI...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at
8 seconds.
.FRI NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E
2 ft at 8 seconds. A slight chance of showers and tstms after
midnight.
.SAT...NE winds 5 to 10 kt. Seas 2 ft. A slight chance of showers
and tstms.
.SAT NIGHT...SE winds 5 to 10 kt. Seas 2 ft. A slight chance of
showers and tstms.
.SUN...NE winds 5 to 10 kt. Seas 2 ft. A slight chance of showers
and tstms.
.SUN NIGHT...E winds 10 kt. Seas 2 ft. A chance of showers and
tstms.

Winds and seas higher in and near tstms.

$$