491
FZUS52 KCHS 040412
CWFCHS

Coastal Waters Forecast
National Weather Service Charleston SC
1212 AM EDT Wed Jun 4 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

AMZ300-041715-
1212 AM EDT Wed Jun 4 2025

.Synopsis for the coastal waters of south coastal South Carolina
and north coastal Georgia...
A coastal low will result in unsettled weather across the region
late tonight through late in the week. A cold front could
approach the region over the weekend into early next week.

$$

AMZ330-041715-
Charleston Harbor-
1212 AM EDT Wed Jun 4 2025

.REST OF TONIGHT...E winds 10 to 15 kt.
.WED...E winds 10 to 15 kt, increasing to 15 to 20 kt in the
afternoon. Waves 1 to 2 ft. Showers likely with a chance of tstms
in the morning, then showers with tstms likely in the afternoon
with vsby 1 to 3 NM.
.WED NIGHT...SE winds 10 to 15 kt, becoming S after midnight.
Showers with tstms likely.
.THU...SW winds 10 to 15 kt. Showers with tstms likely.
.THU NIGHT...SW winds 10 to 15 kt with gusts to 20 kt, becoming W
after midnight. Showers and tstms likely, mainly in the evening.
.FRI...NW winds 10 kt, becoming W in the afternoon. A chance of
showers and tstms.
.FRI NIGHT...SW winds 10 kt. A chance of showers and tstms,
mainly in the evening.
.SAT...SW winds 10 to 15 kt. A chance of showers and tstms.
.SAT NIGHT...W winds 10 to 15 kt. A chance of showers and tstms.
.SUN...SW winds 10 to 15 kt. Showers and tstms likely.
.SUN NIGHT...SW winds 10 to 15 kt. Showers and tstms likely.

Winds and waves higher in and near tstms.

Unless otherwise noted, waves 1 foot or less.

Charleston Harbor water temperature 79 degrees.

$$

AMZ350-041715-
Waters from South Santee River to Edisto Beach SC out 20 NM-
1212 AM EDT Wed Jun 4 2025

.REST OF TONIGHT...E winds 15 kt with gusts to 20 kt. Seas 3 to
4 ft. Wave Detail: SE 4 ft at 6 seconds. A chance of showers and
tstms late.
.WED...E winds 15 to 20 kt with gusts to 25 kt. Seas 4 to 5 ft.
Wave Detail: SE 5 ft at 6 seconds. Showers with a chance of
tstms. Vsby 1 to 3 NM in the afternoon.
.WED NIGHT...SE winds 15 to 20 kt, becoming S 10 to 15 kt after
midnight. Seas 4 to 5 ft. Wave Detail: SE 5 ft at 7 seconds.
Showers with tstms likely. Vsby 1 to 3 NM in the evening.
.THU...SW winds 10 to 15 kt with gusts to 20 kt. Seas 4 to 5 ft.
Wave Detail: SE 5 ft at 7 seconds. Showers with tstms likely.
.THU NIGHT...SW winds 15 kt, becoming W after midnight. Seas 4 to
5 ft, subsiding to 3 to 4 ft after midnight. Wave Detail: S 4 ft
at 7 seconds. Showers and tstms likely.
.FRI...NW winds 10 to 15 kt, becoming W in the afternoon. Seas
3 to 4 ft. Wave Detail: W 4 ft at 7 seconds and SE 3 ft at
7 seconds. A chance of showers and tstms.
.FRI NIGHT...SW winds 10 to 15 kt. Seas 3 ft. A slight chance of
showers and tstms.
.SAT...SW winds 15 to 20 kt. Seas 3 ft. A chance of showers and
tstms.
.SAT NIGHT...W winds 15 to 20 kt. Seas 3 to 4 ft. A chance of
showers and tstms.
.SUN...SW winds 10 to 15 kt. Seas 2 to 3 ft. Showers and tstms
likely.
.SUN NIGHT...SW winds 15 to 20 kt. Seas 3 to 4 ft. Showers and
tstms likely.

Winds and seas higher in and near tstms.

$$

AMZ352-041715-
Waters from Edisto Beach SC to Savannah GA out 20 NM-
1212 AM EDT Wed Jun 4 2025

.REST OF TONIGHT...E winds 15 kt with gusts to 20 kt. Seas 3 to
4 ft. Wave Detail: SE 3 ft at 6 seconds. A chance of tstms. A
chance of showers, then showers likely late.
.WED...E winds 15 to 20 kt with gusts to 25 kt. Seas 4 to 5 ft.
Wave Detail: SE 5 ft at 6 seconds. Showers with a chance of tstms
in the morning, then showers with tstms likely in the afternoon
with vsby 1 to 3 NM.
.WED NIGHT...SE winds 10 to 15 kt, becoming S after midnight.
Seas 4 to 5 ft. Wave Detail: SE 5 ft at 7 seconds. Showers with
tstms likely. Vsby 1 to 3 NM in the evening.
.THU...SW winds 10 to 15 kt. Seas 4 to 5 ft, subsiding to 3 to
4 ft in the afternoon. Wave Detail: SE 5 ft at 7 seconds,
becoming SE 4 ft at 7 seconds. Showers with tstms likely.
.THU NIGHT...SW winds 10 to 15 kt with gusts to 20 kt, becoming W
after midnight. Seas 3 to 4 ft. Wave Detail: SE 4 ft at
7 seconds. Showers and tstms likely.
.FRI...NW winds 10 to 15 kt, becoming SW 5 to 10 kt in the
afternoon. Seas 3 to 4 ft, subsiding to 2 to 3 ft in the
afternoon. Wave Detail: SE 3 ft at 7 seconds, becoming SE 3 ft at
7 seconds and W 1 foot at 4 seconds. A chance of showers and
tstms.
.FRI NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. A chance of
showers and tstms.
.SAT...SW winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers
and tstms.
.SAT NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. A chance of
showers and tstms.
.SUN...SW winds 10 to 15 kt. Seas 2 to 3 ft. Showers and tstms
likely.
.SUN NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Showers and
tstms likely.

Winds and seas higher in and near tstms.

$$

AMZ354-041715-
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including
Grays Reef National Marine Sanctuary-
1212 AM EDT Wed Jun 4 2025

.REST OF TONIGHT...E winds 15 to 20 kt. Seas 3 to 4 ft. Wave
Detail: E 3 ft at 5 seconds. A chance of tstms. A chance of
showers, then showers likely late.
.WED...SE winds 10 to 15 kt with gusts to 20 kt. Seas 3 to 4 ft,
building to 4 to 5 ft in the afternoon. Wave Detail: E 4 ft at
6 seconds, becoming SE 4 ft at 6 seconds. Showers with tstms
likely. Vsby 1 to 3 NM in the afternoon.
.WED NIGHT...SE winds 10 to 15 kt, becoming SW after midnight.
Seas 4 to 5 ft. Wave Detail: SE 4 ft at 7 seconds. Showers with
tstms likely. Vsby 1 to 3 NM in the evening.
.THU...SW winds 10 to 15 kt with gusts to 20 kt. Seas 3 to 4 ft.
Wave Detail: SE 4 ft at 7 seconds. Showers with tstms likely.
.THU NIGHT...SW winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail:
SE 4 ft at 7 seconds. Showers and tstms likely.
.FRI...W winds 10 to 15 kt, becoming SW 5 to 10 kt in the
afternoon. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 7 seconds. A
chance of showers and tstms.
.FRI NIGHT...S winds 5 to 10 kt, becoming SW 10 to 15 kt after
midnight. Seas 2 to 3 ft. A chance of showers and tstms.
.SAT...SW winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers
and tstms.
.SAT NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. A chance of
showers and tstms.
.SUN...SW winds 10 to 15 kt. Seas 2 to 3 ft. Showers with tstms
likely.
.SUN NIGHT...SW winds 10 to 15 kt. Seas 2 to 3 ft. Showers and
tstms likely.

Winds and seas higher in and near tstms.

$$

AMZ374-041715-
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM-
1212 AM EDT Wed Jun 4 2025

.REST OF TONIGHT...E winds 15 to 20 kt. Seas 4 to 5 ft. Wave
Detail: E 4 ft at 6 seconds. Showers likely with a chance of
tstms.
.WED...SE winds 15 kt with gusts to 25 kt. Seas 4 to 5 ft. Wave
Detail: E 5 ft at 6 seconds. Showers with tstms likely. Vsby 1 to
3 NM in the afternoon.
.WED NIGHT...S winds 15 to 20 kt with gusts to 25 kt. Seas 5 to
6 ft. Wave Detail: S 6 ft at 7 seconds. Showers with tstms
likely. Vsby 1 to 3 NM in the evening.
.THU...SW winds 15 kt with gusts to 20 kt. Seas 4 to 5 ft. Wave
Detail: SE 5 ft at 7 seconds. Showers with tstms likely.
.THU NIGHT...SW winds 15 to 20 kt. Seas 3 to 4 ft. Wave Detail:
SE 4 ft at 7 seconds and SW 3 ft at 4 seconds. Showers with tstms
likely.
.FRI...W winds 10 to 15 kt with gusts to 20 kt, diminishing to
5 to 10 kt in the afternoon. Seas 3 to 4 ft. Wave Detail: SE 3 ft
at 7 seconds and W 2 ft at 4 seconds. A chance of showers. Tstms
likely, mainly in the morning.
.FRI NIGHT...SW winds 10 to 15 kt. Seas 3 ft. A chance of showers
and tstms.
.SAT...SW winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers
and tstms.
.SAT NIGHT...SW winds 15 kt. Seas 2 to 3 ft. A chance of showers
and tstms.
.SUN...SW winds 10 to 15 kt. Seas 3 ft. Showers and tstms likely.
.SUN NIGHT...SW winds 10 to 15 kt. Seas 3 ft. Showers with tstms
likely.

Winds and seas higher in and near tstms.

$$