437
FZUS52 KCHS 280646
CWFCHS

Coastal Waters Forecast
National Weather Service Charleston SC
246 AM EDT Fri Mar 28 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

AMZ300-281930-
246 AM EDT Fri Mar 28 2025

.Synopsis for the coastal waters of south coastal South Carolina
and north coastal Georgia...
Dry, high pressure will prevail through Saturday, then rain and
thunderstorm chances increase into Sunday and Monday followed by
a strong cold front Monday evening.

$$

AMZ330-281930-
Charleston Harbor-
246 AM EDT Fri Mar 28 2025

.TODAY...NE winds 5 kt, becoming E late this morning, then SE
15 kt with gusts to 20 kt this afternoon.
.TONIGHT...S winds 10 to 15 kt with gusts to 20 kt, diminishing
to 5 kt after midnight.
.SAT...SE winds 5 kt, increasing to 10 kt in the afternoon.
.SAT NIGHT...SE winds 5 kt.
.SUN...SE winds 5 kt, becoming S in the afternoon. A slight
chance of showers in the morning, then a chance of showers in the
afternoon.
.SUN NIGHT...S winds 5 to 10 kt. A chance of showers.
.MON...S winds 10 kt. A chance of showers with a slight chance of
tstms.
.MON NIGHT...SW winds 10 kt. Showers likely with a slight chance
of tstms.
.TUE...W winds 5 to 10 kt.
.TUE NIGHT...E 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 62 degrees.

$$

AMZ350-281930-
Waters from South Santee River to Edisto Beach SC out 20 NM-
246 AM EDT Fri Mar 28 2025

.TODAY...E winds 5 to 10 kt, becoming SE this afternoon. Seas 2
to 3 ft. Wave Detail: E 2 ft at 5 seconds and SE 2 ft at 8
seconds. Isolated showers late.
.TONIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft, building to 3 to
4 ft. Wave Detail: SE 3 ft at 8 seconds and NE 1 foot at 4
seconds, becoming SE 3 ft at 8 seconds.
.SAT...SE winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: SE 4 ft
at 8 seconds.
.SAT NIGHT...SE winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: SE
4 ft at 9 seconds.
.SUN...S winds 5 to 10 kt. Seas 4 to 5 ft. Wave Detail: SE 5 ft
at 9 seconds. A slight chance of showers in the morning, then a
chance of showers in the afternoon.
.SUN NIGHT...S winds 10 to 15 kt. Seas 4 to 5 ft. Wave Detail: SE
5 ft at 9 seconds. A chance of showers in the evening, then
showers likely after midnight.
.MON...SW winds 10 to 15 kt. Seas 4 to 5 ft. A chance of showers
and tstms.
.MON NIGHT...SW winds 10 to 15 kt. Seas 4 to 6 ft. Showers likely
with a slight chance of tstms.
.TUE...W winds 10 to 15 kt. Seas 4 to 5 ft.
.TUE NIGHT...E winds 10 kt. Seas 3 to 4 ft. A slight chance of
showers.

Winds and seas higher in and near tstms.

$$

AMZ352-281930-
Waters from Edisto Beach SC to Savannah GA out 20 NM-
246 AM EDT Fri Mar 28 2025

.TODAY...NE winds 10 kt, becoming SE this afternoon. Seas 2 to
3 ft. Wave Detail: E 2 ft at 5 seconds and SE 2 ft at 8 seconds.
.TONIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft, building to 3 to
4 ft. Wave Detail: SE 3 ft at 8 seconds and E 2 ft at 5 seconds,
becoming SE 3 ft at 8 seconds and NE 1 foot at 5 seconds.
.SAT...SE winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: SE 4 ft
at 8 seconds.
.SAT NIGHT...SE winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: SE
4 ft at 9 seconds.
.SUN...SE winds 10 kt. Seas 4 to 5 ft. Wave Detail: SE 5 ft at
9 seconds. A chance of showers.
.SUN NIGHT...S winds 10 kt. Seas 4 to 5 ft. Wave Detail: SE 5 ft
at 9 seconds. A chance of showers.
.MON...S winds 10 to 15 kt. Seas 4 to 5 ft. A chance of showers
and tstms.
.MON NIGHT...SW winds 10 to 15 kt. Seas 4 to 5 ft. Showers likely
with a slight chance of tstms.
.TUE...SW winds 10 kt. Seas 3 to 4 ft.
.TUE NIGHT...E winds 10 kt. Seas 3 to 4 ft. A slight chance of
showers.

Winds and seas higher in and near tstms.

$$

AMZ354-281930-
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including
Grays Reef National Marine Sanctuary-
246 AM EDT Fri Mar 28 2025

.TODAY...NE winds 10 kt, becoming SE this afternoon. Seas 2 to
3 ft. Wave Detail: E 2 ft at 7 seconds.
.TONIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft, building to 3 to
4 ft. Wave Detail: E 2 ft at 5 seconds and SE 2 ft at 8 seconds,
becoming SE 3 ft at 8 seconds and E 2 ft at 5 seconds.
.SAT...SE winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: SE 4 ft
at 8 seconds and NE 1 foot at 4 seconds.
.SAT NIGHT...SE winds 10 kt. Seas 3 to 4 ft. Wave Detail: SE 4 ft
at 8 seconds. A slight chance of showers after midnight.
.SUN...SE winds 10 kt. Seas 3 to 4 ft. Wave Detail: SE 4 ft at
9 seconds. A chance of showers. A slight chance of tstms in the
afternoon.
.SUN NIGHT...S winds 10 kt. Seas 3 to 4 ft. Wave Detail: SE 4 ft
at 9 seconds. A slight chance of tstms in the evening. A chance
of showers.
.MON...S winds 10 to 15 kt. Seas 3 to 4 ft. A chance of showers
and tstms.
.MON NIGHT...SW winds 10 to 15 kt. Seas 3 to 4 ft. A chance of
showers and tstms.
.TUE...SW winds 10 kt. Seas 3 to 4 ft. A slight chance of
showers.
.TUE NIGHT...SE winds 10 kt. Seas 3 ft. A slight chance of
showers.

Winds and seas higher in and near tstms.

$$

AMZ374-281930-
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM-
246 AM EDT Fri Mar 28 2025

.TODAY...E winds 5 to 10 kt, becoming SE this afternoon. Seas
2 to 3 ft, building to 3 to 4 ft. Wave Detail: E 3 ft at 7
seconds, becoming SE 3 ft at 8 seconds and NE 2 ft at 5 seconds.
.TONIGHT...SE winds 10 to 15 kt. Seas 4 to 5 ft. Wave Detail: E
4 ft at 7 seconds.
.SAT...SE winds 10 to 15 kt. Seas 4 to 5 ft. Wave Detail: SE 5 ft
at 8 seconds.
.SAT NIGHT...SE winds 10 to 15 kt. Seas 4 to 5 ft, building to
4 to 6 ft. Wave Detail: SE 5 ft at 9 seconds. A slight chance of
showers after midnight.
.SUN...SE winds 10 kt. Seas 4 to 6 ft, subsiding to 4 to 5 ft.
Wave Detail: SE 5 ft at 9 seconds. A chance of showers.
.SUN NIGHT...S winds 10 to 15 kt. Seas 5 to 6 ft. Wave Detail: SE
6 ft at 10 seconds. A chance of showers with a slight chance of
tstms.
.MON...S winds 10 to 15 kt. Seas 5 to 6 ft. A chance of showers
and tstms.
.MON NIGHT...SW winds 10 to 15 kt. Seas 4 to 6 ft. A chance of
showers and tstms.
.TUE...W winds 10 to 15 kt. Seas 4 to 5 ft. A slight chance of
showers and tstms.
.TUE NIGHT...E winds 10 kt. Seas 3 to 4 ft. A slight chance of
showers.

Winds and seas higher in and near tstms.

$$