110
FZUS52 KCHS 031748
CWFCHS

Coastal Waters Forecast
National Weather Service Charleston SC
148 PM EDT Thu Jul 3 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

AMZ300-040615-
148 PM EDT Thu Jul 3 2025

.Synopsis for the coastal waters of south coastal South Carolina
and north coastal Georgia...
A stalled front will linger in the vicinity through the weekend.
An area of low pressure could develop along the front off the
Southeast coast late this week.

$$

AMZ330-040615-
Charleston Harbor-
148 PM EDT Thu Jul 3 2025

.THIS AFTERNOON...S winds 10 to 15 kt. A chance of showers and
tstms early, then showers and tstms likely late.
.TONIGHT...SW winds 5 kt. A chance of showers and tstms in the
evening.
.FRI...NE winds 5 to 10 kt, becoming E 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.
.FRI NIGHT...E winds 10 to 15 kt with gusts to 20 kt. A chance of
showers and tstms.
.SAT...E winds 10 to 15 kt, increasing to 15 to 20 kt in the
afternoon. Waves 1 to 2 ft. Showers. A chance of tstms in the
morning, then tstms likely in the afternoon.
.SAT NIGHT...E winds 10 to 15 kt with gusts to 25 kt. Showers
likely. A chance of tstms, mainly in the evening.
.SUN...SE winds 10 to 15 kt. Showers likely with a chance of
tstms.
.SUN NIGHT...S winds 10 kt. A chance of showers and tstms.
.MON...SW winds 5 to 10 kt. A chance of showers and tstms.
.MON 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 86 degrees.

$$

AMZ350-040615-
Waters from South Santee River to Edisto Beach SC out 20 NM-
148 PM EDT Thu Jul 3 2025

.THIS AFTERNOON...SW winds 5 to 10 kt. Seas 3 ft. Wave Detail: SE
3 ft at 7 seconds. A chance of showers and tstms.
.TONIGHT...SW winds 5 to 10 kt. Seas 2 to 3 ft. Wave Detail: SE
3 ft at 7 seconds. A slight chance of showers and tstms.
.FRI...NE winds 5 to 10 kt, becoming E 10 to 15 kt with gusts to
20 kt in the afternoon. Seas 3 to 4 ft. Wave Detail: SE 4 ft at
8 seconds. A chance of showers and tstms.
.FRI NIGHT...E winds 15 to 20 kt. Seas 4 to 5 ft. Wave Detail: SE
4 ft at 7 seconds and E 3 ft at 4 seconds. A chance of tstms. A
chance of showers in the evening, then showers likely after
midnight.
.SAT...E winds 15 to 20 kt with gusts to 25 kt. Seas 4 to 5 ft,
building to 5 to 6 ft in the afternoon. Wave Detail: SE 5 ft at
7 seconds, becoming SE 6 ft at 7 seconds. Showers with a chance
of tstms.
.SAT NIGHT...E winds 15 to 20 kt with gusts to 25 kt. Seas 5 to
6 ft. Wave Detail: SE 6 ft at 8 seconds. Showers likely with a
chance of tstms.
.SUN...SE winds 10 to 15 kt. Seas 4 to 5 ft. Showers likely with
a chance of tstms.
.SUN NIGHT...S winds 10 to 15 kt. Seas 4 to 5 ft. A chance of
showers and tstms.
.MON...SW winds 10 to 15 kt. Seas 3 to 4 ft. A chance of showers
and tstms.
.MON NIGHT...SW winds 10 to 15 kt. Seas 3 ft. A chance of showers
with a slight chance of tstms.

Winds and seas higher in and near tstms.

$$

AMZ352-040615-
Waters from Edisto Beach SC to Savannah GA out 20 NM-
148 PM EDT Thu Jul 3 2025

.THIS AFTERNOON...S winds 5 kt. Seas 2 to 3 ft. Wave Detail: SE
3 ft at 8 seconds. A chance of showers and tstms.
.TONIGHT...S winds 5 kt. Seas 2 to 3 ft. Wave Detail: SE 3 ft at
7 seconds. A chance of showers and tstms, mainly in the evening.
.FRI...NE winds 5 to 10 kt, increasing to 10 to 15 kt with gusts
to 20 kt in the afternoon. Seas 2 to 3 ft, building to 3 to 4 ft
in the afternoon. Wave Detail: SE 3 ft at 8 seconds. A chance of
showers and tstms.
.FRI NIGHT...E winds 15 to 20 kt. Seas 3 to 4 ft. Wave Detail: SE
4 ft at 7 seconds and E 3 ft at 4 seconds. A chance of tstms. A
chance of showers in the evening, then showers likely after
midnight.
.SAT...E winds 15 to 20 kt with gusts to 25 kt. Seas 4 to 5 ft,
building to 5 to 6 ft in the afternoon. Wave Detail: E 4 ft at
6 seconds. Showers with a chance of tstms.
.SAT NIGHT...E winds 15 to 20 kt, becoming NE 10 to 15 kt after
midnight. Seas 4 to 6 ft, subsiding to 4 to 5 ft after midnight.
Wave Detail: E 4 ft at 6 seconds, becoming E 4 ft at 7 seconds.
Showers likely. A chance of tstms, mainly in the evening.
.SUN...SE winds 10 to 15 kt. Seas 4 to 5 ft. A chance of showers
and tstms.
.SUN NIGHT...SW winds 10 kt. Seas 3 to 4 ft. A chance of showers
and tstms.
.MON...SW winds 10 kt. Seas 2 to 3 ft. A chance of showers and
tstms.
.MON NIGHT...SW winds 10 kt. Seas 2 to 3 ft. A slight chance of
showers and tstms.

Winds and seas higher in and near tstms.

$$

AMZ354-040615-
Waters from Savannah GA to Altamaha Sound GA out 20 NM, including
Grays Reef National Marine Sanctuary-
148 PM EDT Thu Jul 3 2025

.THIS AFTERNOON...S winds 5 to 10 kt. Seas 2 ft. Wave Detail: SE
2 ft at 8 seconds. A chance of showers and tstms early, then a
slight chance of showers and tstms late.
.TONIGHT...S winds 5 to 10 kt. Seas 2 ft. Wave Detail: SE 2 ft at
8 seconds. A chance of showers and tstms in the evening.
.FRI...NE winds 5 to 10 kt, increasing to 10 to 15 kt in the
afternoon. Seas 2 to 3 ft. Wave Detail: SE 3 ft at 7 seconds and
NE 2 ft at 3 seconds. A slight chance of showers and tstms in the
morning, then a chance of showers and tstms in the afternoon.
.FRI NIGHT...E winds 15 kt with gusts to 20 kt. Seas 3 to 4 ft.
Wave Detail: NE 3 ft at 4 seconds and SE 3 ft at 7 seconds. A
chance of tstms. A chance of showers in the evening, then showers
likely after midnight.
.SAT...NE winds 15 to 20 kt with gusts to 25 kt. Seas 4 to 5 ft.
Wave Detail: E 4 ft at 5 seconds and SE 3 ft at 8 seconds.
Showers with a chance of tstms.
.SAT NIGHT...NE winds 15 to 20 kt. Seas 4 to 5 ft, subsiding to
3 to 4 ft after midnight. Wave Detail: E 4 ft at 6 seconds,
becoming E 4 ft at 7 seconds. Showers likely with a chance of
tstms in the evening, then a chance of showers with a slight
chance of tstms after midnight.
.SUN...SW winds 10 to 15 kt. Seas 3 to 4 ft. A chance of showers
and tstms.
.SUN NIGHT...SW winds 10 kt. Seas 3 to 4 ft. A slight chance of
showers and tstms.
.MON...SW winds 10 kt. Seas 2 to 3 ft. A chance of showers and
tstms.
.MON NIGHT...SW winds 10 kt. Seas 2 to 3 ft. A slight chance of
showers and tstms.

Winds and seas higher in and near tstms.

$$

AMZ374-040615-
Waters from Savannah GA to Altamaha Sound GA from 20 to 60 NM-
148 PM EDT Thu Jul 3 2025

.THIS AFTERNOON...S winds 5 to 10 kt. Seas 2 to 3 ft. Wave
Detail: SE 3 ft at 8 seconds. A slight chance of showers and
tstms early.
.TONIGHT...S winds 5 to 10 kt. Seas 2 to 3 ft, building to 3 to
4 ft after midnight. Wave Detail: SE 3 ft at 8 seconds. A slight
chance of showers and tstms.
.FRI...NE winds 5 to 10 kt, increasing to 10 to 15 kt in the
afternoon. Seas 3 to 4 ft. Wave Detail: SE 4 ft at 8 seconds. A
chance of showers and tstms.
.FRI NIGHT...E winds 15 kt with gusts to 20 kt. Seas 3 to 4 ft,
building to 4 to 5 ft after midnight. Wave Detail: SE 4 ft at
8 seconds and NE 2 ft at 3 seconds, becoming SE 4 ft at
8 seconds. A chance of tstms. Showers.
.SAT...E winds 15 to 20 kt. Seas 4 to 5 ft. Wave Detail: SE 5 ft
at 7 seconds and NE 3 ft at 4 seconds. Showers with a chance of
tstms.
.SAT NIGHT...NE winds 15 to 20 kt, becoming E 10 to 15 kt after
midnight. Seas 4 to 5 ft. Wave Detail: E 5 ft at 7 seconds.
Showers likely with a chance of tstms.
.SUN...SW winds 10 to 15 kt. Seas 4 to 5 ft. A chance of showers
and tstms.
.SUN NIGHT...SW winds 10 kt. Seas 3 to 4 ft. A chance of showers
and tstms.
.MON...SW winds 10 kt. Seas 3 ft. A chance of showers with a
slight chance of tstms.
.MON NIGHT...SW winds 10 kt. Seas 3 ft. A chance of showers with
a slight chance of tstms.

Winds and seas higher in and near tstms.

$$