417
FZUS52 KCHS 020609
CWFCHS

Coastal Waters Forecast
National Weather Service Charleston SC
209 AM EDT Sat Aug 2 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

AMZ300-021915-
209 AM EDT Sat Aug 2 2025

.Synopsis for the coastal waters of south coastal South Carolina
and north coastal Georgia...
A cold front will pass through today, before stalling to the
south late weekend, then remaining nearby into next week.

$$

AMZ330-021915-
Charleston Harbor-
209 AM EDT Sat Aug 2 2025

.TODAY...W winds 5 kt this morning, becoming N 5 to 10 kt late
morning, then NE 10 kt this afternoon. A chance of showers and
tstms until late afternoon, then showers and tstms likely late.
.TONIGHT...NE winds 10 kt. Showers with tstms likely in the
evening, then showers likely with a chance of tstms after
midnight.
.SUN...NE winds 10 to 15 kt with gusts to 20 kt. Showers likely
with a chance of tstms in the morning, then showers with tstms
likely in the afternoon.
.SUN NIGHT...NE winds 10 to 15 kt with gusts to 20 kt,
diminishing to 5 to 10 kt after midnight. Showers with tstms
likely in the evening, then showers likely with a chance of tstms
after midnight.
.MON...NE winds 5 to 10 kt. Showers likely. A chance of tstms in
the morning, then tstms likely in the afternoon.
.MON NIGHT...E winds 5 to 10 kt. Showers likely with a chance of
tstms.
.TUE...E winds 5 to 10 kt. Showers and tstms likely.
.TUE NIGHT...E winds 5 to 10 kt. A chance of showers and tstms.
.WED...NE winds 5 to 10 kt. Showers likely with a chance of
tstms.
.WED NIGHT...NE 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 88 degrees.

$$

AMZ350-021915-
Waters from South Santee River to Edisto Beach SC out 20 NM-
209 AM EDT Sat Aug 2 2025

.TODAY...N winds 10 to 15 kt, becoming NE 15 late. Seas 2 to 3
ft. Wave Detail: W 2 ft at 5 seconds and SE 1 foot at 8 seconds. A
chance of showers and tstms this morning, then showers and tstms
likely this afternoon.
.TONIGHT...NE winds 10 to 15 kt with gusts to 20 kt. Seas 2 to
3 ft, building to 3 to 4 ft after midnight. Wave Detail: E 3 ft
at 8 seconds and E 2 ft at 4 seconds, becoming E 3 ft at
8 seconds and SE 2 ft at 5 seconds. Tstms likely. Showers.
.SUN...NE winds 15 to 20 kt. Seas 3 to 4 ft. Wave Detail: NE 4 ft
at 6 seconds and S 1 foot at 4 seconds. Showers. A chance of
tstms in the morning, then tstms likely in the afternoon.
.SUN NIGHT...NE winds 10 to 15 kt. Seas 3 to 4 ft. Wave Detail:
NE 4 ft at 7 seconds. Showers with tstms likely in the evening,
then showers likely with a chance of tstms after midnight.
.MON...NE winds 10 kt. Seas 3 ft. Wave Detail: E 3 ft at
7 seconds. Showers likely with a chance of tstms.
.MON NIGHT...E winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: E
4 ft at 8 seconds. Showers likely with a chance of tstms.
.TUE...NE winds 5 to 10 kt. Seas 3 to 4 ft. Showers likely with a
chance of tstms.
.TUE NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. Showers likely
with a chance of tstms.
.WED...NE winds 5 to 10 kt. Seas 2 to 3 ft. Showers likely with a
chance of tstms.
.WED NIGHT...NE winds 5 to 10 kt. Seas 2 to 3 ft. Showers likely
with a chance of tstms.

Winds and seas higher in and near tstms.

$$

AMZ352-021915-
Waters from Edisto Beach SC to Savannah GA out 20 NM-
209 AM EDT Sat Aug 2 2025

.TODAY...N winds 5 to 10 kt, becoming NE 10 kt this afternoon.
Seas 2 ft. Wave Detail: S 2 ft at 5 seconds and SE 1 foot at 8
seconds. A chance of showers and tstms this morning, then showers
and tstms likely this afternoon.
.TONIGHT...NE winds 10 to 15 kt. Seas 2 ft. Wave Detail: E 2 ft
at 4 seconds and SE 1 foot at 8 seconds. Showers and tstms in the
evening, then showers likely with a chance of tstms after
midnight.
.SUN...NE winds 10 to 15 kt with gusts to 20 kt. Seas 2 to 3 ft.
Wave Detail: E 3 ft at 8 seconds and E 2 ft at 4 seconds. Showers
with a chance of tstms.
.SUN NIGHT...NE winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: E
3 ft at 7 seconds. Showers. Tstms likely, mainly in the evening.
.MON...NE winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E 3 ft
at 8 seconds. Showers likely. A chance of tstms in the morning,
then tstms likely in the afternoon.
.MON NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E
3 ft at 8 seconds. Showers likely with a chance of tstms.
.TUE...E winds 5 to 10 kt. Seas 2 to 3 ft. Showers likely with a
chance of tstms.
.TUE NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. Showers likely
with a chance of tstms.
.WED...NE winds 5 to 10 kt. Seas 2 to 3 ft. Showers likely with a
chance of tstms.
.WED NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. Showers likely
with a chance of tstms.

Winds and seas higher in and near tstms.

$$

AMZ354-021915-
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including
Grays Reef National Marine Sanctuary-
209 AM EDT Sat Aug 2 2025

.TODAY...NW winds 10 kt, becoming NE this afternoon. Seas 2 ft.
Wave Detail: S 2 ft at 5 seconds and SE 1 foot at 8 seconds. A
chance of showers and tstms until late afternoon, then showers
and tstms likely late.
.TONIGHT...NE winds 5 to 10 kt. Seas 2 ft. Wave Detail: E 1 foot
at 4 seconds and SE 1 foot at 8 seconds. Showers with tstms
likely in the evening, then a chance of showers and tstms after
midnight with vsby 1 to 3 NM.
.SUN...NE winds 10 to 15 kt. Seas 2 to 3 ft. Wave Detail: NE 2 ft
at 3 seconds and SE 1 foot at 8 seconds. Showers with a chance of
tstms.
.SUN NIGHT...NE winds 10 to 15 kt with gusts to 20 kt,
diminishing to 5 to 10 kt after midnight. Seas 2 to 3 ft. Wave
Detail: E 2 ft at 4 seconds and E 2 ft at 8 seconds. Showers.
Tstms likely, mainly in the evening.
.MON...NE winds 10 kt. Seas 2 to 3 ft. Wave Detail: NE 3 ft at
8 seconds. A chance of showers and tstms in the morning, then
showers and tstms likely in the afternoon.
.MON NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: E
3 ft at 8 seconds. Showers likely. Tstms likely, mainly in the
evening.
.TUE...E winds 5 to 10 kt. Seas 2 to 3 ft. Showers and tstms
likely.
.TUE NIGHT...SE winds 5 to 10 kt. Seas 2 to 3 ft. Showers likely
with a chance of tstms.
.WED...E winds 5 to 10 kt. Seas 2 to 3 ft. Showers and tstms
likely.
.WED NIGHT...E winds 5 to 10 kt. Seas 2 to 3 ft. Showers likely
with a chance of tstms.

Winds and seas higher in and near tstms.

$$

AMZ374-021915-
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM-
209 AM EDT Sat Aug 2 2025

.TODAY...NW winds 5 to 10 kt, becoming NE 10 kt late. Seas 2 to 3
ft. Wave Detail: SW 2 ft at 5 seconds and SE 2 ft at 8 seconds. A
chance of showers and tstms this morning, then showers and tstms
likely early this afternoon. A chance of showers and tstms late.
.TONIGHT...NE winds 5 to 10 kt. Seas 2 ft. Wave Detail: E 2 ft at
8 seconds and E 1 foot at 4 seconds. Showers with tstms likely in
the evening, then showers likely with a chance of tstms after
midnight. Vsby 1 to 3 NM.
.SUN...NE winds 5 to 10 kt, increasing to 10 to 15 kt in the
afternoon. Seas 2 to 3 ft. Wave Detail: NE 2 ft at 3 seconds and
E 2 ft at 8 seconds. Showers with a chance of tstms.
.SUN NIGHT...NE winds 10 to 15 kt, diminishing to 5 to 10 kt
after midnight. Seas 2 to 3 ft. Wave Detail: NE 3 ft at 7 seconds
and S 1 foot at 4 seconds. Showers with a chance of tstms.
.MON...NE winds 5 to 10 kt. Seas 3 ft. Wave Detail: NE 3 ft at
8 seconds. Showers likely with a chance of tstms.
.MON NIGHT...E winds 5 to 10 kt. Seas 3 to 4 ft. Wave Detail: NE
4 ft at 8 seconds. Showers likely with a chance of tstms.
.TUE...E winds 5 to 10 kt. Seas 3 to 4 ft. Showers likely with a
chance of tstms.
.TUE NIGHT...SE winds 5 to 10 kt. Seas 3 to 4 ft. Showers likely
with a chance of tstms.
.WED...NE winds 5 to 10 kt. Seas 3 ft. Showers likely with a
chance of tstms.
.WED NIGHT...E winds 5 to 10 kt. Seas 3 ft. Showers likely with a
chance of tstms.

Winds and seas higher in and near tstms.

$$