FZUS52 KCHS 181755
CWFCHS
Coastal Waters Forecast
National Weather Service Charleston SC
155 PM EDT Wed Jun 18 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
AMZ300-190615-
155 PM EDT Wed Jun 18 2025
.Synopsis for the coastal waters of south coastal South Carolina
and north coastal Georgia...
High pressure centered in the Atlantic will prevail across the
Southeast. A cold front could approach Friday, possibly passing
just to our north, before high pressure returns through early
next week.
$$
AMZ330-190615-
Charleston Harbor-
155 PM EDT Wed Jun 18 2025
.THIS AFTERNOON...S winds 15 kt with gusts to 20 kt. A slight
chance of showers and tstms early.
.TONIGHT...SW winds 10 to 15 kt.
.THU...SW winds 10 to 15 kt with gusts to 20 kt.
.THU NIGHT...SW winds 10 to 15 kt. A chance of tstms. A chance of
showers in the evening, then showers likely after midnight.
.FRI...SW winds 10 kt. A chance of tstms. Showers likely, mainly
in the morning.
.FRI NIGHT...SW winds 5 to 10 kt. A chance of showers and tstms.
.SAT...S winds 5 to 10 kt. A chance of showers with a slight
chance of tstms.
.SAT NIGHT...S winds 5 to 10 kt.
.SUN...S winds 5 to 10 kt.
.SUN NIGHT...S winds 5 to 10 kt.
Winds and waves higher in and near tstms.
Unless otherwise noted, waves 1 foot or less.
Charleston Harbor water temperature 82 degrees.
$$
AMZ350-190615-
Waters from South Santee River to Edisto Beach SC out 20 NM-
155 PM EDT Wed Jun 18 2025
.THIS AFTERNOON...SW winds 10 to 15 kt. Seas 3 ft. Wave Detail: S
3 ft at 5 seconds and SE 2 ft at 8 seconds.
.TONIGHT...SW winds 15 to 20 kt. Seas 3 to 4 ft. Wave Detail: S
4 ft at 5 seconds and SE 1 foot at 8 seconds.
.THU...SW winds 15 to 20 kt with gusts to 25 kt. Seas 3 to 4 ft.
Wave Detail: SW 4 ft at 5 seconds and SE 1 foot at 8 seconds.
.THU 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 SE 2 ft at 8 seconds.
A chance of tstms. A chance of showers in the evening, then
showers likely after midnight.
.FRI...SW winds 10 to 15 kt with gusts to 20 kt, diminishing to
5 to 10 kt in the afternoon. Seas 3 to 4 ft, subsiding to 2 to
3 ft in the afternoon. Wave Detail: SE 4 ft at 7 seconds,
becoming S 3 ft at 7 seconds. A chance of tstms. Showers likely,
mainly in the morning.
.FRI 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 8 seconds. Showers likely with a
chance of tstms.
.SAT...S winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers
and tstms.
.SAT NIGHT...S winds 5 to 10 kt. Seas 2 ft.
.SUN...S winds 5 to 10 kt. Seas 2 ft.
.SUN NIGHT...S winds 5 to 10 kt. Seas 2 ft.
Winds and seas higher in and near tstms.
$$
AMZ352-190615-
Waters from Edisto Beach SC to Savannah GA out 20 NM-
155 PM EDT Wed Jun 18 2025
.THIS AFTERNOON...S winds 10 to 15 kt. Seas 3 ft. Wave Detail: S
2 ft at 5 seconds and SE 2 ft at 8 seconds.
.TONIGHT...S winds 15 kt with gusts to 20 kt. Seas 3 to 4 ft.
Wave Detail: S 3 ft at 5 seconds and SE 2 ft at 8 seconds.
.THU...SW winds 10 to 15 kt with gusts to 20 kt. Seas 3 to 4 ft,
subsiding to 2 to 3 ft in the afternoon. Wave Detail: S 3 ft at
5 seconds and SE 1 foot at 8 seconds.
.THU NIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Seas 3 to
4 ft. Wave Detail: S 4 ft at 5 seconds and SE 3 ft at 8 seconds.
A chance of tstms. A chance of showers in the evening, then
showers likely after midnight.
.FRI...SW winds 5 to 10 kt. Seas 3 to 4 ft, subsiding to 2 to
3 ft in the afternoon. Wave Detail: SE 3 ft at 7 seconds,
becoming S 2 ft at 5 seconds and SE 2 ft at 8 seconds. A chance
of tstms. Showers likely, mainly in the morning.
.FRI NIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S
2 ft at 5 seconds and SE 2 ft at 8 seconds. Showers likely with a
chance of tstms.
.SAT...S winds 5 to 10 kt. Seas 2 ft. A chance of showers with a
slight chance of tstms.
.SAT NIGHT...S winds 5 to 10 kt. Seas 2 ft. A slight chance of
showers and tstms.
.SUN...S winds 5 to 10 kt. Seas 2 ft.
.SUN NIGHT...S winds 5 to 10 kt. Seas 2 ft.
Winds and seas higher in and near tstms.
$$
AMZ354-190615-
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including
Grays Reef National Marine Sanctuary-
155 PM EDT Wed Jun 18 2025
.THIS AFTERNOON...S winds 10 to 15 kt. Seas 2 to 3 ft. Wave
Detail: S 2 ft at 5 seconds and SE 2 ft at 8 seconds.
.TONIGHT...S winds 15 kt with gusts to 20 kt. Seas 3 ft. Wave
Detail: SE 3 ft at 6 seconds.
.THU...S winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft
at 5 seconds and SE 1 foot at 8 seconds. A slight chance of
showers and tstms in the afternoon.
.THU NIGHT...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 SE 3 ft at 8 seconds.
A chance of tstms. A chance of showers in the evening, then
showers likely after midnight.
.FRI...SW winds 5 to 10 kt, becoming S in the afternoon. Seas
2 to 3 ft. Wave Detail: S 3 ft at 5 seconds and SE 2 ft at
8 seconds. Showers likely with a slight chance of tstms in the
morning, then a chance of showers and tstms in the afternoon.
.FRI NIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE
2 ft at 8 seconds. A chance of showers and tstms.
.SAT...S winds 5 to 10 kt. Seas 2 ft. A chance of showers with a
slight chance of tstms.
.SAT NIGHT...S winds 5 to 10 kt. Seas 2 ft.
.SUN...SE winds 5 to 10 kt. Seas 2 ft.
.SUN NIGHT...S winds 5 to 10 kt. Seas 2 ft.
Winds and seas higher in and near tstms.
$$
AMZ374-190615-
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM-
155 PM EDT Wed Jun 18 2025
.THIS AFTERNOON...S winds 10 to 15 kt. Seas 3 ft. Wave Detail: S
2 ft at 5 seconds and SE 2 ft at 8 seconds.
.TONIGHT...S winds 15 kt with gusts to 20 kt. Seas 3 to 4 ft.
Wave Detail: S 3 ft at 4 seconds and SE 3 ft at 8 seconds.
.THU...SW winds 10 to 15 kt with gusts to 20 kt. Seas 3 to 4 ft.
Wave Detail: S 3 ft at 5 seconds and SE 3 ft at 8 seconds.
.THU NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Seas 3 to
4 ft. Wave Detail: S 3 ft at 5 seconds and SE 3 ft at 8 seconds.
A chance of tstms. A chance of showers in the evening, then
showers likely after midnight.
.FRI...SW winds 10 to 15 kt with gusts to 20 kt, diminishing to
5 to 10 kt in the afternoon. Seas 3 to 4 ft, subsiding to 2 to
3 ft in the afternoon. Wave Detail: S 3 ft at 5 seconds and SE
2 ft at 8 seconds, becoming SE 3 ft at 8 seconds and S 2 ft at
5 seconds. A chance of tstms. Showers likely, mainly in the
morning.
.FRI NIGHT...S winds 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft
at 8 seconds. A chance of tstms. A chance of showers in the
evening, then showers likely after midnight.
.SAT...S winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers
and tstms.
.SAT NIGHT...S winds 5 to 10 kt. Seas 2 ft. A slight chance of
showers and tstms.
.SUN...S winds 5 kt. Seas 2 ft. A slight chance of showers and
tstms.
.SUN NIGHT...S winds 5 to 10 kt. Seas 2 ft.
Winds and seas higher in and near tstms.
$$
CWFCHS
Coastal Waters Forecast
National Weather Service Charleston SC
155 PM EDT Wed Jun 18 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
AMZ300-190615-
155 PM EDT Wed Jun 18 2025
.Synopsis for the coastal waters of south coastal South Carolina
and north coastal Georgia...
High pressure centered in the Atlantic will prevail across the
Southeast. A cold front could approach Friday, possibly passing
just to our north, before high pressure returns through early
next week.
$$
AMZ330-190615-
Charleston Harbor-
155 PM EDT Wed Jun 18 2025
.THIS AFTERNOON...S winds 15 kt with gusts to 20 kt. A slight
chance of showers and tstms early.
.TONIGHT...SW winds 10 to 15 kt.
.THU...SW winds 10 to 15 kt with gusts to 20 kt.
.THU NIGHT...SW winds 10 to 15 kt. A chance of tstms. A chance of
showers in the evening, then showers likely after midnight.
.FRI...SW winds 10 kt. A chance of tstms. Showers likely, mainly
in the morning.
.FRI NIGHT...SW winds 5 to 10 kt. A chance of showers and tstms.
.SAT...S winds 5 to 10 kt. A chance of showers with a slight
chance of tstms.
.SAT NIGHT...S winds 5 to 10 kt.
.SUN...S winds 5 to 10 kt.
.SUN NIGHT...S winds 5 to 10 kt.
Winds and waves higher in and near tstms.
Unless otherwise noted, waves 1 foot or less.
Charleston Harbor water temperature 82 degrees.
$$
AMZ350-190615-
Waters from South Santee River to Edisto Beach SC out 20 NM-
155 PM EDT Wed Jun 18 2025
.THIS AFTERNOON...SW winds 10 to 15 kt. Seas 3 ft. Wave Detail: S
3 ft at 5 seconds and SE 2 ft at 8 seconds.
.TONIGHT...SW winds 15 to 20 kt. Seas 3 to 4 ft. Wave Detail: S
4 ft at 5 seconds and SE 1 foot at 8 seconds.
.THU...SW winds 15 to 20 kt with gusts to 25 kt. Seas 3 to 4 ft.
Wave Detail: SW 4 ft at 5 seconds and SE 1 foot at 8 seconds.
.THU 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 SE 2 ft at 8 seconds.
A chance of tstms. A chance of showers in the evening, then
showers likely after midnight.
.FRI...SW winds 10 to 15 kt with gusts to 20 kt, diminishing to
5 to 10 kt in the afternoon. Seas 3 to 4 ft, subsiding to 2 to
3 ft in the afternoon. Wave Detail: SE 4 ft at 7 seconds,
becoming S 3 ft at 7 seconds. A chance of tstms. Showers likely,
mainly in the morning.
.FRI 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 8 seconds. Showers likely with a
chance of tstms.
.SAT...S winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers
and tstms.
.SAT NIGHT...S winds 5 to 10 kt. Seas 2 ft.
.SUN...S winds 5 to 10 kt. Seas 2 ft.
.SUN NIGHT...S winds 5 to 10 kt. Seas 2 ft.
Winds and seas higher in and near tstms.
$$
AMZ352-190615-
Waters from Edisto Beach SC to Savannah GA out 20 NM-
155 PM EDT Wed Jun 18 2025
.THIS AFTERNOON...S winds 10 to 15 kt. Seas 3 ft. Wave Detail: S
2 ft at 5 seconds and SE 2 ft at 8 seconds.
.TONIGHT...S winds 15 kt with gusts to 20 kt. Seas 3 to 4 ft.
Wave Detail: S 3 ft at 5 seconds and SE 2 ft at 8 seconds.
.THU...SW winds 10 to 15 kt with gusts to 20 kt. Seas 3 to 4 ft,
subsiding to 2 to 3 ft in the afternoon. Wave Detail: S 3 ft at
5 seconds and SE 1 foot at 8 seconds.
.THU NIGHT...SW winds 10 to 15 kt with gusts to 20 kt. Seas 3 to
4 ft. Wave Detail: S 4 ft at 5 seconds and SE 3 ft at 8 seconds.
A chance of tstms. A chance of showers in the evening, then
showers likely after midnight.
.FRI...SW winds 5 to 10 kt. Seas 3 to 4 ft, subsiding to 2 to
3 ft in the afternoon. Wave Detail: SE 3 ft at 7 seconds,
becoming S 2 ft at 5 seconds and SE 2 ft at 8 seconds. A chance
of tstms. Showers likely, mainly in the morning.
.FRI NIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: S
2 ft at 5 seconds and SE 2 ft at 8 seconds. Showers likely with a
chance of tstms.
.SAT...S winds 5 to 10 kt. Seas 2 ft. A chance of showers with a
slight chance of tstms.
.SAT NIGHT...S winds 5 to 10 kt. Seas 2 ft. A slight chance of
showers and tstms.
.SUN...S winds 5 to 10 kt. Seas 2 ft.
.SUN NIGHT...S winds 5 to 10 kt. Seas 2 ft.
Winds and seas higher in and near tstms.
$$
AMZ354-190615-
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including
Grays Reef National Marine Sanctuary-
155 PM EDT Wed Jun 18 2025
.THIS AFTERNOON...S winds 10 to 15 kt. Seas 2 to 3 ft. Wave
Detail: S 2 ft at 5 seconds and SE 2 ft at 8 seconds.
.TONIGHT...S winds 15 kt with gusts to 20 kt. Seas 3 ft. Wave
Detail: SE 3 ft at 6 seconds.
.THU...S winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: S 3 ft
at 5 seconds and SE 1 foot at 8 seconds. A slight chance of
showers and tstms in the afternoon.
.THU NIGHT...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 SE 3 ft at 8 seconds.
A chance of tstms. A chance of showers in the evening, then
showers likely after midnight.
.FRI...SW winds 5 to 10 kt, becoming S in the afternoon. Seas
2 to 3 ft. Wave Detail: S 3 ft at 5 seconds and SE 2 ft at
8 seconds. Showers likely with a slight chance of tstms in the
morning, then a chance of showers and tstms in the afternoon.
.FRI NIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE
2 ft at 8 seconds. A chance of showers and tstms.
.SAT...S winds 5 to 10 kt. Seas 2 ft. A chance of showers with a
slight chance of tstms.
.SAT NIGHT...S winds 5 to 10 kt. Seas 2 ft.
.SUN...SE winds 5 to 10 kt. Seas 2 ft.
.SUN NIGHT...S winds 5 to 10 kt. Seas 2 ft.
Winds and seas higher in and near tstms.
$$
AMZ374-190615-
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM-
155 PM EDT Wed Jun 18 2025
.THIS AFTERNOON...S winds 10 to 15 kt. Seas 3 ft. Wave Detail: S
2 ft at 5 seconds and SE 2 ft at 8 seconds.
.TONIGHT...S winds 15 kt with gusts to 20 kt. Seas 3 to 4 ft.
Wave Detail: S 3 ft at 4 seconds and SE 3 ft at 8 seconds.
.THU...SW winds 10 to 15 kt with gusts to 20 kt. Seas 3 to 4 ft.
Wave Detail: S 3 ft at 5 seconds and SE 3 ft at 8 seconds.
.THU NIGHT...S winds 10 to 15 kt with gusts to 20 kt. Seas 3 to
4 ft. Wave Detail: S 3 ft at 5 seconds and SE 3 ft at 8 seconds.
A chance of tstms. A chance of showers in the evening, then
showers likely after midnight.
.FRI...SW winds 10 to 15 kt with gusts to 20 kt, diminishing to
5 to 10 kt in the afternoon. Seas 3 to 4 ft, subsiding to 2 to
3 ft in the afternoon. Wave Detail: S 3 ft at 5 seconds and SE
2 ft at 8 seconds, becoming SE 3 ft at 8 seconds and S 2 ft at
5 seconds. A chance of tstms. Showers likely, mainly in the
morning.
.FRI NIGHT...S winds 10 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft
at 8 seconds. A chance of tstms. A chance of showers in the
evening, then showers likely after midnight.
.SAT...S winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers
and tstms.
.SAT NIGHT...S winds 5 to 10 kt. Seas 2 ft. A slight chance of
showers and tstms.
.SUN...S winds 5 kt. Seas 2 ft. A slight chance of showers and
tstms.
.SUN NIGHT...S winds 5 to 10 kt. Seas 2 ft.
Winds and seas higher in and near tstms.
$$