353
FZUS52 KCHS 291746
CWFCHS

Coastal Waters Forecast
National Weather Service Charleston SC
146 PM EDT Sun Jun 29 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

AMZ300-300630-
146 PM EDT Sun Jun 29 2025

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

$$

AMZ330-300630-
Charleston Harbor-
146 PM EDT Sun Jun 29 2025

.THIS AFTERNOON...S winds 10 to 15 kt. A slight chance of showers
and tstms.
.TONIGHT...SW winds 5 to 10 kt. A slight chance of showers and
tstms in the evening.
.MON...S winds 5 to 10 kt, increasing to 10 to 15 kt with gusts
to 20 kt in the afternoon. A slight chance of showers and tstms
in the morning, then a chance of showers and tstms in the
afternoon.
.MON NIGHT...SW winds 10 to 15 kt with gusts to 20 kt. A chance
of showers and tstms.
.TUE...SW winds 10 to 15 kt, becoming S 15 to 20 kt in the
afternoon. Waves 1 to 2 ft. A chance of showers and tstms.
.TUE NIGHT...SW winds 15 to 20 kt, diminishing to 10 to 15 kt
after midnight. Waves 1 to 2 ft. A chance of showers and tstms.
.WED...SW winds 10 to 15 kt. Showers and tstms likely.
.WED NIGHT...SW winds 5 to 10 kt. A chance of showers and tstms.
.THU...SW winds 5 to 10 kt. A chance of showers and tstms.
.THU NIGHT...SW winds 5 to 10 kt. A slight 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 84 degrees.

$$

AMZ350-300630-
Waters from South Santee River to Edisto Beach SC out 20 NM-
146 PM EDT Sun Jun 29 2025

.THIS AFTERNOON...S winds 10 kt. Seas 2 to 3 ft. Wave Detail: S
2 ft at 5 seconds and SE 2 ft at 9 seconds.
.TONIGHT...SW winds 10 to 15 kt. Seas 3 ft. Wave Detail: S 2 ft
at 5 seconds and SE 2 ft at 9 seconds.
.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
4 seconds and SE 2 ft at 9 seconds. A chance of showers and
tstms.
.MON NIGHT...SW winds 15 to 20 kt. Seas 3 to 4 ft. Wave Detail: S
4 ft at 5 seconds and SE 2 ft at 9 seconds. A chance of showers
and tstms.
.TUE...SW winds 15 to 20 kt with gusts to 25 kt. Seas 3 to 4 ft.
Wave Detail: S 4 ft at 6 seconds and E 2 ft at 9 seconds. A
chance of showers and tstms.
.TUE NIGHT...SW winds 15 to 20 kt with gusts to 25 kt. Seas 3 to
4 ft. Wave Detail: S 4 ft at 5 seconds and E 2 ft at 8 seconds. A
chance of showers and tstms in the evening, then showers and
tstms likely after midnight.
.WED...SW winds 10 to 15 kt. Seas 3 to 4 ft. Showers and tstms
likely.
.WED NIGHT...SW winds 10 to 15 kt. Seas 3 ft. Showers and tstms
likely.
.THU...SW winds 5 to 10 kt. Seas 3 to 4 ft. A chance of showers
and tstms.
.THU NIGHT...SW winds 5 to 10 kt. Seas 3 to 4 ft. A chance of
showers and tstms.

Winds and seas higher in and near tstms.

$$

AMZ352-300630-
Waters from Edisto Beach SC to Savannah GA out 20 NM-
146 PM EDT Sun Jun 29 2025

.THIS AFTERNOON...S winds 10 to 15 kt. Seas 2 ft. Wave Detail: SE
2 ft at 9 seconds and S 1 foot at 4 seconds.
.TONIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S
2 ft at 4 seconds and SE 2 ft at 9 seconds.
.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
4 seconds and SE 2 ft at 9 seconds. A chance of showers and
tstms, mainly in the morning.
.MON NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Seas 3 to
4 ft. Wave Detail: S 3 ft at 5 seconds and E 2 ft at 9 seconds. A
chance of showers and tstms.
.TUE...SW winds 10 to 15 kt, becoming S 15 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 and tstms.
.TUE NIGHT...S winds 15 to 20 kt, becoming SW 10 to 15 kt after
midnight. Seas 3 to 4 ft. Wave Detail: S 4 ft at 5 seconds and E
1 foot at 8 seconds. Showers and tstms likely.
.WED...SW winds 10 kt. Seas 2 to 3 ft. Showers and tstms likely.
.WED NIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Showers and
tstms likely.
.THU...SW winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers
and tstms.
.THU NIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. A chance of
showers and tstms.

Winds and seas higher in and near tstms.

$$

AMZ354-300630-
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including
Grays Reef National Marine Sanctuary-
146 PM EDT Sun Jun 29 2025

.THIS AFTERNOON...S winds 10 kt, increasing to 10 to 15 kt late.
Seas 2 ft. Wave Detail: SE 2 ft at 9 seconds and S 1 foot at 4
seconds. A slight chance of showers and tstms late.
.TONIGHT...S winds 10 to 15 kt, becoming SW 5 to 10 kt after
midnight. Seas 2 to 3 ft. Wave Detail: S 2 ft at 4 seconds and SE
2 ft at 9 seconds.
.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 and tstms.
.MON NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft, building to
3 to 4 ft after midnight. Wave Detail: S 3 ft at 5 seconds and E
1 foot at 9 seconds. A chance of showers and tstms.
.TUE...SW winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft
at 5 seconds and E 1 foot at 9 seconds. A chance of showers and
tstms.
.TUE NIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Seas 3 to
4 ft, subsiding to 2 to 3 ft after midnight. Wave Detail: S 3 ft
at 5 seconds and E 1 foot at 8 seconds. A chance of showers and
tstms.
.WED...SW winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers
and tstms.
.WED NIGHT...SW winds 10 kt. Seas 2 to 3 ft. A chance of showers
and tstms.
.THU...SW winds 5 to 10 kt. Seas 2 to 3 ft. Showers and tstms
likely.
.THU NIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. A chance of
showers and tstms.

Winds and seas higher in and near tstms.

$$

AMZ374-300630-
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM-
146 PM EDT Sun Jun 29 2025

.THIS AFTERNOON...SW winds 10 kt, becoming S 10 to 15 kt late.
Seas 2 to 3 ft. Wave Detail: SE 2 ft at 9 seconds and SW 1 foot at
4 seconds.
.TONIGHT...S winds 10 to 15 kt, becoming SW 5 to 10 kt after
midnight. Seas 2 to 3 ft. Wave Detail: S 2 ft at 4 seconds and SE
2 ft at 9 seconds. A slight chance of showers and tstms after
midnight.
.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 and tstms.
.MON NIGHT...S winds 15 kt with gusts to 20 kt. Seas 3 to 4 ft.
Wave Detail: S 4 ft at 5 seconds and E 2 ft at 9 seconds. Showers
and tstms likely.
.TUE...SW winds 10 to 15 kt with gusts to 20 kt. Seas 3 to 4 ft.
Wave Detail: S 3 ft at 5 seconds and E 2 ft at 9 seconds. A
chance of showers and tstms.
.TUE NIGHT...S winds 15 to 20 kt, becoming SW 10 to 15 kt after
midnight. Seas 3 to 4 ft. Wave Detail: S 4 ft at 5 seconds and E
2 ft at 8 seconds. Showers and tstms likely.
.WED...SW winds 10 to 15 kt. Seas 3 to 4 ft. Showers and tstms
likely.
.WED NIGHT...SW winds 10 to 15 kt. Seas 3 to 4 ft. Showers and
tstms likely.
.THU...SW winds 5 to 10 kt. Seas 3 to 4 ft. Showers and tstms
likely.
.THU NIGHT...SW winds 5 to 10 kt. Seas 3 to 4 ft. A chance of
showers and tstms.

Winds and seas higher in and near tstms.

$$