622
FZUS52 KCHS 160019
CWFCHS

Coastal Waters Forecast
National Weather Service Charleston SC
819 PM EDT Tue Sep 15 2026

South Santee River SC to Altamaha Sound GA out 60 NM, including
Charleston Harbor and Grays Reef National Marine Sanctuary

AMZ300-161400-
819 PM EDT Tue Sep 15 2026

.Synopsis for the coastal waters of south coastal South Carolina
and north coastal Georgia...
A wedge of high pressure will prevail this week. The high will
gradually weaken through the weekend as a trough of low pressure
approaches from the Atlantic.

$$

AMZ340-161400-
Charleston Harbor-
819 PM EDT Tue Sep 15 2026

.TONIGHT...E winds 15 to 20 kt, becoming NE 10 to 15 kt late.
Waves 1 to 2 ft.
.WED...NE winds 15 kt with gusts to 20 kt.
.WED NIGHT...E winds 10 to 15 kt with gusts to 20 kt, becoming NE
5 to 10 kt after midnight.
.THU...NE winds 10 kt.
.THU NIGHT...E winds 5 to 10 kt, diminishing to 5 kt after
midnight.
.FRI...NE winds 5 kt, becoming SE in the afternoon.
.FRI NIGHT...SE winds 5 to 10 kt, diminishing to 5 kt after
midnight.
.SAT...E winds 5 to 10 kt. A slight chance of showers and tstms.
.SAT NIGHT...E winds 5 to 10 kt. A slight chance of showers and
tstms.
.SUN...E winds 5 to 10 kt. A chance of showers and tstms.
.SUN NIGHT...SE winds 5 to 10 kt. A chance of showers with a
slight chance of tstms.

Winds and waves higher in and near tstms.

Unless otherwise noted, waves 1 foot or less.

Charleston Harbor water temperature 85 degrees.

$$

AMZ360-161400-
Coastal waters from South Santee River to Edisto Beach SC out
20 NM-
819 PM EDT Tue Sep 15 2026

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY MORNING...

.TONIGHT...NE winds 15 to 20 kt with gusts to 25 kt. Seas 5 to
6 ft, subsiding to 4 to 6 ft after midnight. Wave Detail: E 6 ft
at 6 seconds, becoming E 5 ft at 7 seconds.
.WED...NE winds 15 to 20 kt with gusts to 25 kt. Seas 4 to 5 ft.
Wave Detail: E 5 ft at 7 seconds.
.WED NIGHT...NE winds 15 to 20 kt, diminishing to 10 to 15 kt
after midnight. Seas 4 to 5 ft, subsiding to 3 to 4 ft after
midnight. Wave Detail: E 5 ft at 6 seconds, becoming E 4 ft at
7 seconds.
.THU...NE winds 10 to 15 kt with gusts to 20 kt. Seas 3 to 4 ft.
Wave Detail: E 4 ft at 7 seconds.
.THU NIGHT...E winds 5 to 10 kt. Seas 3 to 4 ft, subsiding to
2 to 3 ft after midnight. Wave Detail: E 3 ft at 7 seconds.
.FRI...NE winds 5 to 10 kt, becoming E in the afternoon. Seas
2 to 3 ft. Wave Detail: E 3 ft at 7 seconds and E 1 foot at
12 seconds.
.FRI NIGHT...SE winds 5 to 10 kt, diminishing to 5 kt after
midnight. Seas 2 ft.
.SAT...E winds 10 to 15 kt. Seas 2 to 3 ft. A slight chance of
showers and tstms.
.SAT NIGHT...E winds 10 to 15 kt. Seas 2 to 3 ft. A chance of
showers with a slight chance of tstms.
.SUN...E winds 5 to 10 kt. Seas 2 ft. A chance of showers and
tstms.
.SUN NIGHT...SE winds 5 to 10 kt. Seas 2 ft. A chance of showers
with a slight chance of tstms.

Winds and seas higher in and near tstms.

$$

AMZ362-161400-
Coastal waters from Edisto Beach SC to Savannah GA out 20 NM-
819 PM EDT Tue Sep 15 2026

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY MORNING...

.TONIGHT...E winds 20 to 25 kt. Seas 5 to 6 ft. Wave Detail: E
6 ft at 6 seconds.
.WED...NE winds 15 to 20 kt with gusts to 25 kt. Seas 4 to 5 ft.
Wave Detail: E 5 ft at 7 seconds.
.WED NIGHT...NE winds 15 to 20 kt, diminishing to 10 to 15 kt
after midnight. Seas 4 to 6 ft, subsiding to 4 to 5 ft after
midnight. Wave Detail: E 5 ft at 6 seconds, becoming E 5 ft at
7 seconds.
.THU...NE winds 10 to 15 kt with gusts to 20 kt. Seas 3 to 4 ft.
Wave Detail: E 4 ft at 7 seconds and SE 2 ft at 8 seconds.
.THU NIGHT...E winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: E
3 ft at 7 seconds and SE 2 ft at 8 seconds.
.FRI...NE winds 5 to 10 kt, becoming E in the afternoon. Seas
2 to 3 ft. Wave Detail: E 2 ft at 7 seconds.
.FRI NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft.
.SAT...E winds 5 to 10 kt. Seas 2 to 3 ft. A slight chance of
showers and tstms.
.SAT NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. A chance of
showers and tstms.
.SUN...E winds 10 kt. Seas 2 ft. A chance of showers and tstms.
.SUN NIGHT...E winds 5 to 10 kt. Seas 2 ft. A chance of showers
and tstms.

Winds and seas higher in and near tstms.

$$

AMZ364-161400-
Coastal waters from Savannah GA to Altamaha Sound GA out 20 nm,
including Grays Reef National Marine Sanctuary-
819 PM EDT Tue Sep 15 2026

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY MORNING...

.TONIGHT...E winds 20 to 25 kt with gusts to 30 kt. Seas 5 to
6 ft, building to 5 to 7 ft after midnight. Wave Detail: E 6 ft
at 7 seconds, becoming E 7 ft at 7 seconds. A slight chance of
showers and tstms early this evening.
.WED...NE winds 20 to 25 kt. Seas 5 to 6 ft. Wave Detail: E 6 ft
at 7 seconds.
.WED NIGHT...NE winds 20 to 25 kt, becoming E 15 to 20 kt after
midnight. Seas 5 to 6 ft, subsiding to 4 to 6 ft after midnight.
Wave Detail: E 6 ft at 7 seconds.
.THU...NE winds 15 to 20 kt. Seas 4 to 5 ft. Wave Detail: E 4 ft
at 7 seconds and E 2 ft at 8 seconds.
.THU NIGHT...E winds 10 to 15 kt, diminishing to 5 to 10 kt after
midnight. Seas 3 to 4 ft. Wave Detail: E 3 ft at 7 seconds and E
2 ft at 8 seconds.
.FRI...NE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: NE 2 ft
at 7 seconds and E 2 ft at 8 seconds.
.FRI NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft.
.SAT...NE winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers
and tstms.
.SAT NIGHT...E winds 10 to 15 kt. Seas 2 to 3 ft. A chance of
showers and tstms.
.SUN...E winds 5 to 10 kt. Seas 2 ft. A chance of showers and
tstms.
.SUN NIGHT...E winds 5 to 10 kt. Seas 2 ft. A chance of showers
and tstms.

Winds and seas higher in and near tstms.

$$

AMZ380-161400-
Waters from South Santee River SC to Edisto Beach SC extending
from 20 to 60 NM-
819 PM EDT Tue Sep 15 2026

.TONIGHT...NE winds 15 to 20 kt with gusts to 25 kt. Seas 6 to
7 ft, subsiding to 5 to 6 ft after midnight. Wave Detail: NE 7 ft
at 7 seconds, becoming NE 6 ft at 7 seconds.
.WED...NE winds 20 kt with gusts to 25 kt. Seas 5 to 6 ft. Wave
Detail: NE 6 ft at 7 seconds. A slight chance of showers in the
morning.
.WED NIGHT...NE winds 15 to 20 kt, becoming E 10 to 15 kt after
midnight. Seas 5 to 6 ft, subsiding to 4 to 5 ft after midnight.
Wave Detail: E 5 ft at 7 seconds.
.THU...NE winds 10 to 15 kt with gusts to 20 kt. Seas 4 to 5 ft.
Wave Detail: E 4 ft at 7 seconds.
.THU NIGHT...NE winds 10 to 15 kt, becoming E 5 to 10 kt after
midnight. Seas 3 to 4 ft. Wave Detail: E 4 ft at 7 seconds and E
1 foot at 13 seconds.
.FRI...NE winds 5 to 10 kt. Seas 3 ft. Wave Detail: E 3 ft at
7 seconds and E 1 foot at 12 seconds.
.FRI NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. A slight chance
of showers and tstms after midnight.
.SAT...NE winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers
with a slight chance of tstms.
.SAT NIGHT...E winds 10 to 15 kt. Seas 2 to 3 ft. A chance of
showers and tstms.
.SUN...E winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers
and tstms.
.SUN NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. A chance of
showers and tstms.

Winds and seas higher in and near tstms.

$$

AMZ382-161400-
Waters from Edisto Beach SC to Savannah GA extending from 20 to
60 NM-
819 PM EDT Tue Sep 15 2026

.TONIGHT...NE winds 20 to 25 kt with gusts to 30 kt. Seas 6 to
7 ft. Wave Detail: E 7 ft at 7 seconds.
.WED...NE winds 20 kt with gusts to 25 kt. Seas 5 to 6 ft. Wave
Detail: NE 6 ft at 7 seconds and SE 2 ft at 8 seconds. A slight
chance of showers in the morning.
.WED NIGHT...NE winds 15 to 20 kt with gusts to 25 kt. Seas 5 to
6 ft, subsiding to 4 to 6 ft after midnight. Wave Detail: NE 6 ft
at 7 seconds, becoming NE 5 ft at 7 seconds and SE 2 ft at
8 seconds.
.THU...NE winds 15 to 20 kt. Seas 4 to 5 ft. Wave Detail: NE 4 ft
at 7 seconds and SE 2 ft at 8 seconds.
.THU NIGHT...NE winds 10 to 15 kt, becoming E 5 to 10 kt after
midnight. Seas 4 to 5 ft, subsiding to 3 to 4 ft after midnight.
Wave Detail: NE 4 ft at 7 seconds and SE 2 ft at 8 seconds,
becoming E 3 ft at 7 seconds and SE 2 ft at 8 seconds.
.FRI...NE winds 5 to 10 kt. Seas 3 ft. Wave Detail: NE 3 ft at
7 seconds and SE 2 ft at 8 seconds.
.FRI NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. A slight chance
of showers and tstms after midnight.
.SAT...E winds 10 to 15 kt. Seas 2 to 3 ft. A chance of showers
with a slight chance of tstms.
.SAT NIGHT...E winds 10 to 15 kt. Seas 3 ft. A chance of showers
and tstms.
.SUN...E winds 10 kt. Seas 3 ft. A chance of showers and tstms.
.SUN NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. A chance of
showers and tstms.

Winds and seas higher in and near tstms.

$$

AMZ384-161400-
Waters from Savannah GA to Altamaha Sound GA extending from 20 to
60 NM-
819 PM EDT Tue Sep 15 2026

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THURSDAY MORNING...

.TONIGHT...NE winds 20 to 25 kt. Seas 6 to 7 ft. Wave Detail: E
7 ft at 7 seconds and E 1 foot at 10 seconds. A slight chance of
showers and tstms early this evening.
.WED...NE winds 20 to 25 kt. Seas 5 to 6 ft. Wave Detail: NE 6 ft
at 7 seconds. A slight chance of showers in the afternoon.
.WED NIGHT...NE winds 20 to 25 kt, becoming E 15 to 20 kt after
midnight. Seas 6 to 7 ft, subsiding to 5 to 6 ft after midnight.
Wave Detail: NE 6 ft at 7 seconds.
.THU...NE winds 15 to 20 kt. Seas 4 to 5 ft. Wave Detail: NE 5 ft
at 8 seconds.
.THU NIGHT...NE winds 10 to 15 kt, diminishing to 5 to 10 kt
after midnight. Seas 4 to 5 ft. Wave Detail: E 5 ft at 8 seconds.
.FRI...NE winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: E 4 ft
at 8 seconds.
.FRI NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. A slight chance
of showers and tstms after midnight.
.SAT...NE winds 5 to 10 kt. Seas 2 to 3 ft. A chance of showers
and tstms.
.SAT NIGHT...E winds 10 to 15 kt. Seas 3 ft. A chance of showers
and tstms.
.SUN...E winds 10 kt. Seas 2 to 3 ft. Showers likely with a
chance of tstms.
.SUN NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. A chance of
showers and tstms.

Winds and seas higher in and near tstms.

$$