498
FZUS52 KCHS 281655
CWFCHS

Coastal Waters Forecast
National Weather Service Charleston SC
1255 PM EDT Sat Jun 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

AMZ300-290515-
1255 PM EDT Sat Jun 28 2025

.Synopsis for the coastal waters of south coastal South Carolina
and north coastal Georgia...
High pressure will extend across the region through early next
week. A cold front will then approach the area around the middle
of next week.

$$

AMZ330-290515-
Charleston Harbor-
1255 PM EDT Sat Jun 28 2025

.THIS AFTERNOON...S winds 10 to 15 kt.
.TONIGHT...SW winds 10 to 15 kt, diminishing to 5 kt after
midnight. A slight chance of showers and tstms in the evening.
.SUN...W winds 5 kt, becoming S in the afternoon. A slight chance
of showers in the morning, then a chance of showers and tstms in
the afternoon.
.SUN NIGHT...SW winds 5 to 10 kt. A chance of showers and tstms,
mainly in the evening.
.MON...SW winds 5 to 10 kt, becoming S 10 to 15 kt with gusts to
20 kt in the afternoon. A chance of showers. A slight chance of
tstms in the morning, then a chance of tstms in the afternoon.
.MON NIGHT...SW winds 10 to 15 kt. A chance of showers and tstms,
mainly in the evening.
.TUE...SW winds 10 to 15 kt. A chance of showers and tstms.
.TUE NIGHT...SW winds 10 to 15 kt. A chance of showers and tstms.
.WED...SW winds 10 kt. Showers and tstms likely.
.WED NIGHT...SW winds 5 to 10 kt. Showers likely with a chance of
tstms.

Winds and waves higher in and near tstms.

Unless otherwise noted, waves 1 foot or less.

Charleston Harbor water temperature 84 degrees.

$$

AMZ350-290515-
Waters from South Santee River to Edisto Beach SC out 20 NM-
1255 PM EDT Sat Jun 28 2025

.THIS AFTERNOON...S winds 10 to 15 kt. Seas 2 to 3 ft. Wave
Detail:
SE 3 ft at 9 seconds.
.TONIGHT...SW winds 5 to 10 kt. Seas 3 ft. Wave Detail: SE 3 ft
at 9 seconds.
.SUN...W winds 5 to 10 kt, becoming S in the afternoon. Seas 2 to
3 ft. Wave Detail: SE 3 ft at 9 seconds and S 2 ft at 5 seconds.
A slight chance of showers and tstms.
.SUN NIGHT...SW winds 10 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft
at 5 seconds and SE 2 ft at 9 seconds. A chance of showers and
tstms.
.MON...SW winds 5 to 10 kt, becoming S 10 to 15 kt with gusts to
20 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: S 3 ft at
5 seconds and SE 2 ft at 9 seconds. A chance of showers. A slight
chance of tstms in the morning, then a chance of tstms in the
afternoon.
.MON NIGHT...SW winds 15 kt with gusts to 20 kt. Seas 3 to 4 ft.
Wave Detail: S 3 ft at 5 seconds and SE 2 ft at 9 seconds. A
chance of showers. A slight chance of tstms in the evening, then
a chance of tstms after midnight.
.TUE...SW winds 15 to 20 kt. Seas 3 to 4 ft. A chance of showers
and tstms.
.TUE NIGHT...SW winds 15 to 20 kt. Seas 3 to 4 ft. Showers likely
with a chance of tstms.
.WED...SW winds 10 to 15 kt. Seas 3 to 4 ft. Showers likely with
a chance of tstms.
.WED NIGHT...SW winds 10 to 15 kt. Seas 3 ft. Showers likely with
a chance of tstms.

Winds and seas higher in and near tstms.

$$

AMZ352-290515-
Waters from Edisto Beach SC to Savannah GA out 20 NM-
1255 PM EDT Sat Jun 28 2025

.THIS AFTERNOON...S winds 10 to 15 kt. Seas 2 to 3 ft. Wave
Detail: SE 2 ft at 9 seconds.
.TONIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE
2 ft at 9 seconds. A slight chance of showers and tstms.
.SUN...W winds 5 to 10 kt, becoming S in the afternoon. Seas 2 to
3 ft. Wave Detail: SE 2 ft at 9 seconds and S 1 foot at
5 seconds. A chance of showers. A slight chance of tstms in the
morning, then a chance of tstms in the afternoon.
.SUN NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S
2 ft at 5 seconds and SE 2 ft at 9 seconds. A chance of showers
and tstms.
.MON...SW winds 5 to 10 kt, becoming S 10 to 15 kt with gusts to
20 kt in the afternoon. Seas 2 to 3 ft. Wave Detail: S 2 ft at
5 seconds and SE 2 ft at 9 seconds. A chance of showers with a
slight chance of tstms.
.MON NIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Seas 3 to
4 ft. Wave Detail: S 3 ft at 4 seconds and SE 2 ft at 9 seconds.
A chance of showers. A chance of tstms, mainly in the evening.
.TUE...SW winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers
and tstms.
.TUE NIGHT...SW winds 10 to 15 kt. Seas 3 to 4 ft. Showers likely
with a chance of tstms.
.WED...SW winds 10 kt. Seas 2 to 3 ft. Showers likely with a
chance of tstms.
.WED NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Showers likely
with a chance of tstms.

Winds and seas higher in and near tstms.

$$

AMZ354-290515-
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including
Grays Reef National Marine Sanctuary-
1255 PM EDT Sat Jun 28 2025

.THIS AFTERNOON...S winds 10 to 15 kt. Seas 2 ft. Wave Detail: SE
2 ft at 9 seconds. A slight chance of showers and tstms late.
.TONIGHT...S winds 10 kt, becoming SW after midnight. Seas 2 to
3 ft. Wave Detail: SE 2 ft at 9 seconds. A chance of showers and
tstms, mainly in the evening.
.SUN...W winds 5 to 10 kt, becoming S in the afternoon. Seas 2 to
3 ft. Wave Detail: S 2 ft at 5 seconds and SE 2 ft at 9 seconds.
A chance of showers. A slight chance of tstms in the morning,
then a chance of tstms in the afternoon.
.SUN NIGHT...SW winds 10 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft
at 4 seconds and SE 2 ft at 9 seconds. A chance of showers. A
chance of tstms, mainly in the evening.
.MON...SW winds 5 to 10 kt, becoming S 10 to 15 kt in the
afternoon. Seas 2 to 3 ft. Wave Detail: S 2 ft at 4 seconds and
SE 2 ft at 9 seconds. A chance of showers. A slight chance of
tstms in the morning, then a chance of tstms in the afternoon.
.MON NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: S
3 ft at 4 seconds and E 2 ft at 9 seconds. A chance of showers. A
chance of tstms, mainly in the evening.
.TUE...SW winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers
and tstms.
.TUE NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Showers likely
with a chance of tstms.
.WED...SW winds 10 kt. Seas 2 to 3 ft. Showers likely with a
chance of tstms.
.WED NIGHT...SW winds 10 kt. Seas 2 to 3 ft. Showers likely with
a chance of tstms.

Winds and seas higher in and near tstms.

$$

AMZ374-290515-
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM-
1255 PM EDT Sat Jun 28 2025

.THIS AFTERNOON...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave
Detail: SE 3 ft at 9 seconds.
.TONIGHT...S winds 5 to 10 kt, becoming SW after midnight. Seas
3 ft. Wave Detail: SE 3 ft at 9 seconds. A chance of showers and
tstms.
.SUN...W winds 5 to 10 kt, becoming SW in the afternoon. Seas
2 to 3 ft. Wave Detail: SW 2 ft at 5 seconds and SE 2 ft at
9 seconds. A chance of showers. A chance of tstms, mainly in the
morning.
.SUN NIGHT...SW winds 10 kt. Seas 2 to 3 ft. Wave Detail: S 2 ft
at 4 seconds and SE 2 ft at 9 seconds. A chance of showers and
tstms.
.MON...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: SW 2 ft
at 4 seconds and SE 2 ft at 9 seconds. A chance of showers with a
slight chance of tstms.
.MON NIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Seas 3 to
4 ft. Wave Detail: S 3 ft at 4 seconds and E 2 ft at 9 seconds. A
chance of showers and tstms.
.TUE...SW winds 10 to 15 kt. Seas 3 ft. A chance of showers and
tstms.
.TUE NIGHT...SW winds 10 to 15 kt. Seas 3 to 4 ft. Showers likely
with a chance of tstms.
.WED...SW winds 10 to 15 kt. Seas 3 ft. Showers likely with a
chance of tstms.
.WED NIGHT...SW winds 10 to 15 kt. Seas 3 to 4 ft. Showers with a
chance of tstms.

Winds and seas higher in and near tstms.

$$