163
FZUS52 KCHS 020949
CWFCHS

Coastal Waters Forecast
National Weather Service Charleston SC
549 AM 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

AMZ300-022230-
549 AM 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.

$$

AMZ330-022230-
Charleston Harbor-
549 AM EDT Tue Sep 2 2025

.TODAY...NE winds 10 to 15 kt with gusts to 20 kt. A slight
chance of showers this morning, then a slight chance of showers
and tstms early this afternoon.
.TONIGHT...NE winds 10 to 15 kt, diminishing to 5 to 10 kt after
midnight.
.WED...NE winds 5 to 10 kt.
.WED NIGHT...E winds 5 to 10 kt.
.THU...E 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...SW winds 10 to 15 kt.
.SAT NIGHT...S winds 5 to 10 kt.

Winds and waves higher in and near tstms.

Unless otherwise noted, waves 1 foot or less.

Charleston Harbor water temperature 80 degrees.

$$

AMZ350-022230-
Waters from South Santee River to Edisto Beach SC out 20 NM-
549 AM EDT Tue Sep 2 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL NOON EDT TODAY...

.TODAY...NE winds 15 to 20 kt with gusts to 25 kt. Seas 4 to
6 ft, subsiding to 3 to 5 ft this afternoon. Wave Detail: E 5 ft
at 7 seconds. A chance of showers with a slight chance of tstms
this morning, then a slight chance of showers and tstms early this
afternoon.
.TONIGHT...NE winds 15 to 20 kt, diminishing to 10 to 15 kt after
midnight. Seas 4 to 5 ft, subsiding to 3 to 4 ft after midnight.
Wave Detail: E 5 ft at 7 seconds, becoming E 4 ft at 7 seconds.
.WED...NE winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: E 4 ft
at 8 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...SW winds 5 to 10 kt. Seas 2 ft.
.SAT NIGHT...S winds 5 to 10 kt. Seas 2 ft. A slight chance of
showers and tstms.

Winds and seas higher in and near tstms.

$$

AMZ352-022230-
Waters from Edisto Beach SC to Savannah GA out 20 NM-
549 AM EDT Tue Sep 2 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL NOON EDT TODAY...

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

$$

AMZ354-022230-
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including
Grays Reef National Marine Sanctuary-
549 AM EDT Tue Sep 2 2025

...SMALL CRAFT ADVISORY IN EFFECT UNTIL NOON EDT TODAY...

.TODAY...NE winds 15 to 20 kt with gusts to 25 kt. Seas 4 to
6 ft, subsiding to 3 to 5 ft this afternoon. Wave Detail: NE 5 ft
at 7 seconds. A slight chance of showers and tstms this morning,
then a chance of showers and tstms this afternoon.
.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. A
slight chance of showers and tstms in the evening.
.WED...NE winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail: E 4 ft
at 7 seconds. A slight chance of showers and tstms in the
afternoon.
.WED NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E
3 ft at 8 seconds. A slight chance of showers and tstms in the
evening.
.THU...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft at
8 seconds. A slight chance of showers and tstms.
.THU NIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E
3 ft at 8 seconds. A slight chance of showers and tstms in the
evening.
.FRI...SE winds 5 to 10 kt. Seas 2 ft.
.FRI NIGHT...S 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.

$$

AMZ374-022230-
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM-
549 AM EDT Tue Sep 2 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS EVENING...

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

Winds and seas higher in and near tstms.

$$