346
FZUS52 KCHS 021742
CWFCHS

Coastal Waters Forecast
National Weather Service Charleston SC
142 PM EDT Tue Sep 2 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

AMZ300-030615-
142 PM EDT Tue Sep 2 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 approach from the northwest late in the weekend.

$$

AMZ330-030615-
Charleston Harbor-
142 PM EDT Tue Sep 2 2025

.THIS AFTERNOON...NE winds 10 to 15 kt with gusts to 20 kt.
.TONIGHT...NE winds 10 to 15 kt, diminishing to 5 to 10 kt after
midnight.
.WED...NE winds 10 kt.
.WED NIGHT...E winds 5 to 10 kt, diminishing to 5 kt after
midnight.
.THU...NE winds 5 kt, becoming SE in the afternoon.
.THU NIGHT...S winds 5 to 10 kt.
.FRI...S winds 5 to 10 kt.
.FRI NIGHT...S winds 5 to 10 kt.
.SAT...S winds 5 to 10 kt.
.SAT NIGHT...S winds 5 to 10 kt.

Unless otherwise noted, waves 1 foot or less.

Charleston Harbor water temperature 80 degrees.

$$

AMZ350-030615-
Waters from South Santee River to Edisto Beach SC out 20 NM-
142 PM EDT Tue Sep 2 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING...

.THIS AFTERNOON...NE winds 20 kt with gusts to 25 kt. Seas 4 to
6 ft. Wave Detail: NE 6 ft at 7 seconds.
.TONIGHT...NE winds 15 to 20 kt, diminishing to 10 to 15 kt after
midnight. Seas 4 to 5 ft. Wave Detail: E 5 ft at 7 seconds.
.WED...NE winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: E 4 ft
at 7 seconds.
.WED NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E
3 ft at 8 seconds.
.THU...E winds 5 to 10 kt. 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
3 ft at 8 seconds.
.FRI...S winds 5 to 10 kt. Seas 2 ft.
.FRI NIGHT...S winds 5 to 10 kt. Seas 2 ft.
.SAT...S winds 5 to 10 kt. Seas 2 ft.
.SAT NIGHT...S winds 5 to 10 kt. Seas 2 ft.

$$

AMZ352-030615-
Waters from Edisto Beach SC to Savannah GA out 20 NM-
142 PM EDT Tue Sep 2 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING...

.THIS AFTERNOON...NE winds 15 to 20 kt with gusts to 25 kt. Seas
4 to 6 ft. Wave Detail: E 5 ft at 7 seconds. A slight chance of
showers and tstms early.
.TONIGHT...NE winds 15 to 20 kt, diminishing to 10 to 15 kt after
midnight. Seas 4 to 5 ft. Wave Detail: E 5 ft at 7 seconds.
.WED...NE winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: E 4 ft
at 7 seconds.
.WED NIGHT...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
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.
.FRI NIGHT...S winds 5 to 10 kt. Seas 2 ft.
.SAT...E winds 5 to 10 kt. Seas 2 ft.
.SAT NIGHT...S winds 5 to 10 kt. Seas 2 ft.

Winds and seas higher in and near tstms.

$$

AMZ354-030615-
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including
Grays Reef National Marine Sanctuary-
142 PM EDT Tue Sep 2 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 PM EDT THIS EVENING...

.THIS AFTERNOON...NE winds 20 to 25 kt. Seas 4 to 6 ft. Wave
Detail: NE 6 ft at 7 seconds. A slight chance of showers and
tstms.
.TONIGHT...NE winds 15 to 20 kt with gusts to 25 kt, diminishing
to 10 to 15 kt after midnight. Seas 4 to 5 ft. Wave Detail: E 6
ft at 7 seconds, becoming E 5 ft at 7 seconds.
.WED...NE winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: E 4 ft
at 7 seconds.
.WED NIGHT...E winds 5 to 10 kt. Seas 3 to 4 ft, subsiding to
2 to 3 ft after midnight. 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
8 seconds.
.THU NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E
3 ft at 8 seconds.
.FRI...SE winds 5 to 10 kt. Seas 2 ft.
.FRI NIGHT...SE winds 5 to 10 kt. Seas 2 ft.
.SAT...NE winds 5 to 10 kt. Seas 2 ft.
.SAT NIGHT...S winds 5 to 10 kt. Seas 2 ft.

Winds and seas higher in and near tstms.

$$

AMZ374-030615-
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM-
142 PM EDT Tue Sep 2 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT...

.THIS AFTERNOON...NE winds 20 to 25 kt. Seas 5 to 7 ft. Wave
Detail: NE 6 ft at 7 seconds. A chance of showers and tstms.
.TONIGHT...NE winds 15 to 20 kt with gusts to 25 kt. Seas 5 to
7 ft, subsiding to 5 to 6 ft after midnight. Wave Detail: NE 6 ft
at 7 seconds. A slight chance of showers and tstms.
.WED...NE winds 10 to 15 kt with gusts to 20 kt. Seas 4 to 5 ft.
Wave Detail: NE 5 ft at 8 seconds. A slight chance of showers and
tstms in the morning.
.WED NIGHT...E winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: E
4 ft at 8 seconds.
.THU...E winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: E 3 ft at
8 seconds.
.THU NIGHT...SE winds 5 to 10 kt. Seas 3 ft. Wave Detail: E 3 ft
at 8 seconds.
.FRI...E winds 5 to 10 kt. Seas 2 to 3 ft. A slight chance of
showers.
.FRI NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. A slight chance
of showers and tstms.
.SAT...NE winds 5 to 10 kt. Seas 2 ft. A slight chance of
showers.
.SAT NIGHT...SE winds 5 to 10 kt. Seas 2 ft. A slight chance of
showers and tstms.

Winds and seas higher in and near tstms.

$$